CN212102366U - Zero-discharge recycling treatment device for wastewater and waste liquid on surface chemical treatment process line - Google Patents
Zero-discharge recycling treatment device for wastewater and waste liquid on surface chemical treatment process line Download PDFInfo
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- CN212102366U CN212102366U CN202020783539.XU CN202020783539U CN212102366U CN 212102366 U CN212102366 U CN 212102366U CN 202020783539 U CN202020783539 U CN 202020783539U CN 212102366 U CN212102366 U CN 212102366U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 177
- 239000007788 liquid Substances 0.000 title claims abstract description 139
- 238000000034 method Methods 0.000 title claims abstract description 64
- 239000002699 waste material Substances 0.000 title claims abstract description 55
- 239000000126 substance Substances 0.000 title claims abstract description 40
- 238000004064 recycling Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 160
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 113
- 208000028659 discharge Diseases 0.000 claims abstract description 68
- 239000002253 acid Substances 0.000 claims abstract description 48
- 239000003513 alkali Substances 0.000 claims abstract description 40
- 239000002585 base Substances 0.000 claims abstract description 24
- 230000008929 regeneration Effects 0.000 claims abstract description 24
- 238000011069 regeneration method Methods 0.000 claims abstract description 24
- 239000010814 metallic waste Substances 0.000 claims abstract description 13
- 238000005406 washing Methods 0.000 claims description 50
- 239000003456 ion exchange resin Substances 0.000 claims description 42
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 42
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 41
- 230000002378 acidificating effect Effects 0.000 claims description 40
- 238000011045 prefiltration Methods 0.000 claims description 29
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 239000000498 cooling water Substances 0.000 claims description 16
- 238000001179 sorption measurement Methods 0.000 claims description 15
- 238000011144 upstream manufacturing Methods 0.000 claims description 14
- 238000010306 acid treatment Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 7
- 238000001471 micro-filtration Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 238000002791 soaking Methods 0.000 description 14
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- 150000002500 ions Chemical class 0.000 description 12
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- 238000009713 electroplating Methods 0.000 description 7
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- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses a zero discharge recycling treatment device of waste water and waste liquid on the surface chemical treatment process line, the device comprises a plurality of groups of acid-base waste water zero discharge treatment devices, a plurality of groups of heavy metal waste water zero discharge devices, high concentration waste water zero discharge treatment device and a plurality of groups of regeneration liquid treatment devices, the device sets up corresponding treatment device to the online matching of each section of the process according to the type and content of harmful substances in the waste water and waste liquid generated in each stage of the process, the device utilizes the acid-base waste water zero discharge treatment device to realize the online recycling of the waste water and waste liquid after treating the waste water and waste liquid generated in an acid solution treatment tank, an alkali solution treatment tank, an acid solution rinsing tank and an alkali solution rinsing tank, and realizes the zero discharge after treating; the waste water and waste liquid produced by the acid rinsing tank, the alkaline rinsing tank and the heavy metal rinsing tank are treated by the heavy metal waste water zero discharge device to realize the online recycling of the waste water and waste liquid, and the discharge amount of the waste water and waste liquid is greatly reduced after the waste water and waste liquid is treated by the regenerated liquid treatment device.
Description
Technical Field
The utility model relates to a waste water waste liquid circulation retrieval and utilization processing apparatus especially relates to a zero release circulation retrieval and utilization processing apparatus of waste water waste liquid on surface chemical treatment process line, belongs to the online circulation of industrial waste water and recycles equipment technical field.
Background
The surface chemical treatment process line comprises a treatment tank for carrying out treatment of process steps and a rinsing tank for cleaning treated workpieces, wherein various treatment liquids for carrying out surface chemical treatment on the workpieces are generally contained in the treatment tanks respectively, and the treatment tank of each step can be one or multiple independent treatment tanks; the rinsing bath mainly has the advantages that the treating fluid on the surface of the processed part processed by the processing bath is cleaned by the effluent of the rinsing device arranged in the rinsing bath, the rinsing bath after each step can be one or a plurality of rinsing baths communicated with each other, each rinsing bath or each group of rinsing baths can evaporate and replenish the liquid in the bath in an external pure water replenishing mode, and when the rinsing baths are a group of rinsing baths communicated with each other, the rinsing baths are usually evaporated and replenished in the last rinsing bath (in the downstream direction according to the upstream of the processing procedure). In a conventional apparatus for chemical surface treatment, one or a group of corresponding rinsing baths are disposed behind the treatment bath for each step of the treatment process, and the chemical surface treatment process line (e.g. electroplating process line) in the prior art is described with reference to fig. 1.
The treatment tank containing the treatment solution is generally divided into three types according to harmful substances contained in the waste liquid after the processing, wherein the first type is an acid solution treatment tank and/or an alkali solution treatment tank, and after the surface chemical treatment process of the workpiece is performed by the liquid contained in the treatment tank, the produced wastewater contains grease and conventional acidic components or alkaline components, so that acidic wastewater and alkaline wastewater are formed, such as an alkali solution tank, a pickling tank for neutralization, an alkaline hydrolysis tank, an acidic activation tank and the like for removing grease on the surface of the workpiece in the electroplating process; the second type is an acid treatment tank and/or an alkaline treatment tank, after the surface chemical treatment process of the step is performed on the workpiece by using the liquid contained in the treatment tank, the generated wastewater not only contains conventional acid components or alkaline components, but also contains heavy metal ions with low content, so that acid wastewater and alkaline wastewater are formed, such as an alkaline immersion tank, an acidic light-emitting tank and the like in an electroplating process; the third type is a heavy metal treatment tank, which contains a liquid to perform the surface chemical treatment on the workpiece, and the generated wastewater contains a large amount of heavy metal ions, such as a tricolor tank in an electroplating process. Thus, after the water washing step is carried out in the water washing tank behind the treatment tank of each process step, the wastewater produced by the water washing tank contains corresponding grease, acidic components, alkaline components or heavy metal ion components and the like.
In the prior art, the waste water and liquid generated by the treatment tank and the rinsing tank are generally collected together by an additional collecting device, and the waste liquid is discharged after centralized treatment or applied to other devices for recycling. The treatment mode can not realize zero discharge or be matched with other devices and equipment which need to be reused in a production site, and can not realize real-time online classification treatment of waste water and waste liquid containing different pollutants.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a zero release recycling treatment device of waste water waste liquid on the surface chemical treatment process line, the device can realize the real-time online circulation retrieval and utilization of waste water waste liquid of the in-process of processing procedure, realizes the zero release of waste water waste liquid.
The technical scheme of the utility model is that:
the utility model provides a waste water waste liquid zero release circulation retrieval and utilization processing apparatus on surface chemical treatment process line sets up in surface chemical treatment process line side, surface chemical treatment process line includes the acidizing fluid treatment tank, is located the acidizing fluid wash bowl at acidizing fluid treatment tank rear, alkali lye treatment tank, the alkali lye wash bowl at alkali lye treatment tank rear, acid treatment tank, is located the acid wash bowl at acid treatment tank rear, alkaline treatment tank, is located the alkaline wash bowl at alkaline treatment tank rear, heavy metal treatment tank and the heavy metal wash bowl that is located heavy metal treatment tank rear, its characterized in that: comprises a plurality of groups of acid-base wastewater zero-discharge treatment devices, a plurality of groups of heavy metal wastewater zero-discharge treatment devices, a high-concentration wastewater zero-discharge treatment device and a plurality of groups of regeneration liquid treatment devices, wherein
The water outlet of the acid liquor rinsing bath positioned at the downstream of the manufacturing process is communicated with the water inlet of the acid liquor rinsing bath positioned at the upstream of the manufacturing process through an acid-base wastewater zero-discharge treatment device by a pipeline, and the water outlet of the acid liquor rinsing bath positioned at the upstream of the manufacturing process is communicated with the water inlet of the acid liquor rinsing bath positioned at the downstream of the manufacturing process through another acid-base wastewater zero-discharge treatment device by a pipeline to form an acid wastewater zero-discharge circulation loop; the water outlet of the alkali liquor rinsing bath positioned at the downstream of the manufacturing process is communicated with the water inlet of the alkali liquor rinsing bath positioned at the upstream of the manufacturing process through an acid-alkali wastewater zero-discharge treatment device by a pipeline; the water outlet of the acid liquor treatment tank, the water outlet of the alkali liquor treatment tank and the water outlet of the alkali liquor rinsing tank positioned at the upstream of the process are communicated with the liquid inlet of a high-concentration wastewater zero-discharge treatment device after being gathered and communicated through pipelines;
the water outlet of the alkaline rinsing bath is communicated with the water inlet of the same alkaline rinsing bath after passing through a heavy metal wastewater zero discharge device through a pipeline; the water outlet of the acidic rinsing bath is communicated with the water inlet of the same acidic rinsing bath after passing through a heavy metal wastewater zero discharge device through a pipeline; the regenerated wastewater outlet of the ion exchange resin tank of the heavy metal wastewater zero-discharge device is communicated with the liquid inlet of a regenerated liquid treatment device after being gathered and communicated through a pipeline;
every the delivery port of heavy metal wash bowl is equallyd divide and is communicate with the water inlet of same heavy metal wash bowl behind a heavy metal waste water zero discharge apparatus through the pipeline respectively, and all heavy metal wash bowls correspond the heavy metal waste water zero discharge apparatus's that the ion exchange resin jar regeneration waste water export is through gathering the intercommunication with a regeneration liquid processing apparatus's inlet after the pipeline.
The further technical scheme is as follows:
the acid-base wastewater zero-discharge treatment device comprises a pump, a first prefilter, an oil remover and a microfiltration membrane filter which are sequentially communicated in series according to the flowing direction of the waste liquid.
The further technical scheme is as follows:
the heavy metal wastewater zero discharge device comprises a second prefilter and an ion exchange resin tank which is communicated with the second prefilter in series according to the flow direction of waste liquid.
The further technical scheme is as follows:
the heavy metal wastewater zero discharge device is a serial heavy metal wastewater zero discharge device, the serial heavy metal wastewater zero discharge device comprises two second prefilters which are arranged in parallel, liquid outlets of the two second prefilters are connected with a plurality of ion exchange resin tanks in series after being gathered through pipelines, wherein one of the two second prefilters is an in-use prefilter, and the other one of the two second prefilters is a standby prefilter.
More preferably, the serial heavy metal wastewater zero-discharge device is communicated with the heavy metal rinsing bath.
The further technical scheme is as follows:
the heavy metal wastewater zero discharge device is a parallel heavy metal wastewater zero discharge device, the parallel heavy metal wastewater zero discharge device comprises a plurality of treatment routes which are arranged in parallel, each treatment route comprises a second prefilter and at least one ion exchange resin tank which are sequentially arranged in series, one treatment route is an in-use treatment route, and the rest treatment routes are standby treatment routes.
Preferably, the parallel heavy metal wastewater zero discharge device is communicated with the alkaline rinsing bath and/or the acidic rinsing bath.
The further technical scheme is as follows:
the regenerated liquid treatment device comprises a collecting water tank, a low-temperature vacuum evaporator, an adsorption water tank and a pressure filter which are sequentially arranged according to the flowing direction of wastewater, wherein a liquid inlet of the collecting water tank is communicated with a pipeline for feeding liquid, a liquid outlet of the collecting water tank is communicated with a liquid inlet of the low-temperature vacuum evaporator through a pump and a pipeline, an evaporative cooling water outlet of the low-temperature vacuum evaporator is communicated with a liquid inlet of the adsorption water tank, and a liquid outlet of the adsorption water tank is communicated with a liquid inlet of the pressure filter through the pump and the pipeline; the structure of the high-concentration wastewater zero-discharge treatment device is consistent with that of the regenerated liquid treatment device.
The further technical scheme is as follows:
the low-temperature vacuum evaporator comprises a cooling water tower and an evaporator body, wherein a liquid inlet of the cooling water tower is communicated with a steam outlet of the evaporator body, and a liquid outlet of the cooling water tower is communicated with a condensate water inlet of the evaporator body.
The further technical scheme is as follows:
and a feeding pipeline for feeding activated carbon powder is arranged above the adsorption water tank.
The utility model has the beneficial technical effects that: the on-line wastewater and waste liquid zero-discharge recycling treatment device is provided with corresponding treatment devices in an on-line matching manner for each stage in the manufacturing process according to the types and contents of harmful substances in the wastewater and waste liquid generated in each stage of the manufacturing process, and comprises an acid-base wastewater and waste liquid zero-discharge treatment device, a heavy metal wastewater and waste liquid zero-discharge treatment device, a high-concentration wastewater and waste liquid zero-discharge treatment device and a regenerated liquid treatment device, wherein the device can realize the on-line recycling of the wastewater and waste liquid after treating the wastewater and waste liquid generated by an acid liquid treatment tank, an alkali liquid treatment tank, an acid liquid rinsing tank and an alkali liquid rinsing tank by using the acid-base wastewater and waste liquid zero-discharge treatment; the on-line recycling of the waste water and the waste liquid can be realized after the waste water and the waste liquid generated by the acid rinsing tank, the alkaline rinsing tank and the heavy metal rinsing tank are treated by the heavy metal waste water zero discharge device, and the discharge amount of the waste water and the waste liquid is greatly reduced after the waste water and the waste liquid are treated by the regenerated liquid treatment device.
Drawings
FIG. 1 is a schematic structural view of a surface chemical treatment process line in the prior art, in which arrows indicate positions of water replenishment by evaporation, and in which reference numerals "1", "2" and "3" are assigned to single or multiple grooves;
FIG. 2 is a schematic view of the structure of the present invention used in conjunction with a conventional surface chemical treatment process line, wherein the corresponding arrows on the surface chemical treatment process line are evaporation water replenishment positions, wherein the numbers of the single-groove or multi-groove marks "1", "2", and "3";
FIG. 3 is a schematic view of the connection structure of the acid-base wastewater zero discharge treatment device of the utility model;
FIG. 4 is a schematic view of one of the connection structures (series-type heavy metal wastewater zero discharge device) of the heavy metal wastewater zero discharge device of the present invention;
FIG. 5 is a schematic view of a second connection structure (parallel heavy metal wastewater zero discharge device) of the heavy metal wastewater zero discharge device of the present invention;
FIG. 6 is a schematic structural view of the high-concentration wastewater zero-discharge treatment device and the regenerated liquid treatment device of the present invention;
wherein:
10-surface chemical treatment process line;
101-acid liquor treatment tank; 101 a-a pickling tank; 101 b-an acidic activation tank;
102-acid liquor rinsing bath; 102 a-a pickling and rinsing bath; 102 b-acidic activated water wash tank;
103-alkali liquor treatment tank; 103 a-an alkaline washing tank; 103 b-an alkaline hydrolysis tank;
104-an alkali liquor rinsing bath; 104 a-an alkaline washing water tank; 104 b-alkaline hydrolysis wash tank;
105-acid treatment tank (acid light-emitting tank);
106-acidic water washing tank (acidic light-emitting water washing tank);
107-alkaline treatment tank (alkaline immersion tank);
108-alkaline rinsing bath (alkaline soaking rinsing bath);
109-heavy metal treatment tank; 109 a-a first tristimulus slot; 109 b-a second tristimulus slot;
110-heavy metal rinsing bath; 110 a-first three color wash tank; 110 b-a second three color wash tank;
20-acid-base wastewater zero-discharge treatment device;
201-a pump; 202-a first pre-filter; 203-oil remover; 204-microfiltration membrane filters;
30-a heavy metal wastewater zero discharge device;
30 a-a serial heavy metal wastewater zero discharge device;
30 b-a parallel heavy metal wastewater zero discharge device;
301-a second pre-filter; 302-ion exchange resin tank;
40-a regenerated liquid treatment device;
401-collecting water tank; 402-low temperature vacuum evaporator; 403-adsorption water tank; 404-a filter press;
402 a-a cooling water tower; 402a 1-an inlet port of a cooling water tower; 402a 2-outlet of cooling tower
402 b-an evaporator body; 402b 1-vapor outlet of evaporator body; 402b2 — condensate inlet of evaporator body;
402 c-a liquid inlet of a low-temperature vacuum evaporator;
402 d-evaporative cooling water outlet of low temperature vacuum evaporator.
Detailed Description
In order to make the technical means of the present invention clearer and to implement the present invention according to the content of the specification, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples, which are used for illustrating the present invention and are not intended to limit the scope of the present invention.
The following describes a zero-discharge recycling treatment device for wastewater and waste liquid on a surface chemical treatment process line in detail, wherein the surface chemical treatment process line 10 comprises an acid solution treatment tank 101, an acid solution rinsing tank 102 positioned behind the acid solution treatment tank, an alkali solution treatment tank 103, an alkali solution rinsing tank 104 positioned behind the alkali solution treatment tank, an acid treatment tank 105, an acid rinsing tank 106 positioned behind the acid treatment tank, an alkaline treatment tank 107, an alkaline rinsing tank 108 positioned behind the alkaline treatment tank, a heavy metal treatment tank 109 and a heavy metal rinsing tank 110 positioned behind the heavy metal treatment tank, and the arrangement sequence of the tanks is arranged according to the process requirements. The surface chemical treatment process line used in the present embodiment is an electroplating process line, in which the acid treatment tank 101 includes an acid washing tank 101a and an acid activation tank 101b, both of which are single tanks; the alkali liquor treatment tank 103 comprises an alkali washing tank 103a and an alkali hydrolysis tank 103b, and both of the alkali washing tank and the alkali hydrolysis tank are single tanks; wherein the acid treatment tank 105 is an acid light-emitting tank which is a single tank; wherein the alkaline treatment tank 107 is an alkaline soaking tank which is a tank group consisting of four single tanks; wherein the heavy metal treatment tank 109 comprises a first three-color tank 109a and a second three-color tank 109b, both of which are single tanks; the acid liquor rinsing bath 102 comprises an acid liquor rinsing bath 102a and an acid activated rinsing bath 102b, wherein the acid liquor rinsing bath 102a is a double bath which is communicated with each other, evaporation and water supplement are carried out from the two baths positioned at the rear end, the acid activated rinsing bath 102b is a single bath, and evaporation and water supplement are carried out on the single bath; the alkali liquor rinsing bath 104 comprises an alkali washing rinsing bath 104a and an alkaline hydrolysis rinsing bath 104b, wherein the alkali washing rinsing bath and the alkaline hydrolysis rinsing bath both comprise double baths which are communicated with each other and evaporate and replenish water from the double baths positioned at the rear end; wherein the acidic water washing tank 106 is an acidic bright water washing tank which is a single tank, and evaporation and water supplement are carried out on the single tank; wherein the alkaline rinsing bath 108 is an alkaline soaking rinsing bath, the bath is a bath group formed by three single baths which are communicated with each other, evaporation and water supplement are carried out from the three baths positioned at the rear ends, and the water flow direction flows from the three baths to the first bath through the two baths; the heavy metal rinsing bath 110 includes a first three-color bath 110a and a second three-color bath 110b, which both include two mutually communicated baths and are both evaporated for water replenishment from the two baths located at the rear end. The surface chemical treatment process line 10 is arranged in the following manner from the upstream to the downstream of the process for each tank: the electroplating solution processing device comprises an alkaline washing tank 103a, an alkaline washing water tank 104a, a pickling tank 101a, a pickling water washing tank 102a, an alkaline hydrolysis tank 103b, an alkaline hydrolysis water washing tank 104b, an acidic activation tank 101b, an acidic activation water washing tank 102b, an alkaline soaking tank (acidic treatment tank) 107, an alkaline soaking water washing tank (alkaline water washing tank) 108, an acidic light emitting tank (acidic treatment tank) 105, an acidic light emitting water washing tank (acidic water washing tank) 106, a first three-color tank 109a, a first three-color water washing tank 110a, a second three-color tank 109b and a second three-color water washing tank 110b, and the subsequent processes are arranged according to conventional electroplating process line equipment, such as a cutting process, a drying process and the like, and are not repeated in the specific embodiment.
This application online waste water waste liquid zero release circulation retrieval and utilization processing apparatus sets up in above-mentioned surface chemical treatment process line side, and it mainly includes acid-base waste water zero release processing apparatus 20 of a plurality of groups, heavy metal waste water zero release processing apparatus 30 of a plurality of groups, high concentration waste water zero release processing apparatus and a plurality of groups regeneration liquid processing apparatus 40.
The water outlet of the acid water washing tank 102 positioned at the downstream of the manufacturing process is communicated with the water inlet of the acid water washing tank 102 positioned at the upstream of the manufacturing process through an acid-base wastewater zero-emission treatment device 20 by a pipeline, and the water outlet of the acid water washing tank positioned at the upstream of the manufacturing process is communicated with the water inlet of the acid water washing tank positioned at the downstream of the manufacturing process through another acid-base wastewater zero-emission treatment device by a pipeline, so that an acid wastewater zero-emission circulation loop is formed. The water outlet of the alkali liquor rinsing bath 104 positioned at the downstream of the process is communicated with the water inlet of the alkali liquor rinsing bath 104 positioned at the upstream of the process through an acid-alkali wastewater zero-discharge treatment device 20 by a pipeline; the water outlet of the acid solution treatment tank 101, the water outlet of the alkali solution treatment tank 103 and the water outlet of the alkali solution rinsing tank 104 positioned at the upstream of the process are communicated with the liquid inlet of a high-concentration wastewater zero-discharge treatment device 40 after being communicated in a gathering way through pipelines.
In this embodiment, the water outlet of the acidic activated water washing tank 102b is communicated with the water inlet (located on the two tanks at the rear end) of the acidic activated water washing tank 102a through a pipeline via an acid-base wastewater zero-discharge treatment device, and the water outlet (located on the one tank at the front end) of the acidic activated water washing tank 102a is communicated with the water inlet of the acidic activated water washing tank 102b through another acid-base wastewater zero-discharge treatment device via a pipeline, so that the wastewater generated by the acidic activated water washing tank 102b flows out and is treated by the acid-base wastewater zero-discharge treatment device, enters the two tanks of the acidic activated water washing tank 102a, flows out from the one tank of the acidic activated water washing tank 102a after passing through the one tank, and then enters the acidic activated water washing tank 102b after being treated by the other acid-base wastewater zero-discharge treatment device, thereby forming an acidic wastewater zero-discharge circulation loop.
In this embodiment, a water outlet of the alkaline-hydrolysis rinsing bath 104b (located in the first bath at the front end) is communicated with a water inlet of the alkaline-hydrolysis rinsing bath 104a (located in the second bath at the rear end) through an acid-base wastewater zero-emission treatment device via a pipeline, so that wastewater generated in the second bath of the alkaline-hydrolysis rinsing bath enters the first bath, then flows out of the first bath, is treated by the acid-base wastewater zero-emission treatment device, enters the second bath of the alkaline-hydrolysis rinsing bath 104a, flows into the first bath from the second bath, and flows out of the water outlet located in the first bath, thereby forming high-concentration wastewater. The water outlet of the 101a pickling tank 101a, the water outlet of the acidic activation tank 101b, the water outlet of the alkaline washing tank 103a, the water outlet of the alkaline hydrolysis tank 103b and the water outlet of the alkaline washing tank 104a are communicated with the liquid inlet of a high-concentration wastewater zero-emission treatment device 40 after being gathered and communicated through pipelines, so that waste liquid generated by the pickling tank, the acidic activation tank, the alkaline washing tank and wastewater generated by the washing tanks corresponding to the four tanks are gathered and concentrated and then flow into the high-concentration wastewater zero-emission treatment device for treatment.
The water outlet of the alkaline rinsing bath 108 is communicated with the water inlet of the same alkaline rinsing bath 108 after passing through a heavy metal wastewater zero discharge device 30 through a pipeline; the water outlet of the acid rinsing bath 106 is communicated with the water inlet of the same acid rinsing bath 106 after passing through a heavy metal wastewater zero discharge device 30 through a pipeline; the regenerated wastewater outlet of the ion exchange resin tank of the heavy metal wastewater zero discharge device 30 is communicated with the liquid inlet of a regenerated liquid treatment device 40 after being gathered and communicated by a pipeline.
In this embodiment, the water outlet of the alkaline soaking and rinsing bath 108 (located in a front tank) is communicated with the water inlet of the alkaline soaking and rinsing bath 108 (located in a rear tank) through a heavy metal wastewater zero discharge device via a pipeline, so as to form a circulation at the alkaline soaking and rinsing bath; the water outlet of the acid bright-dipping rinsing bath 106 is communicated with the water inlet of the acid bright-dipping rinsing bath 106 after passing through a heavy metal wastewater zero discharge device through a pipeline, so that circulation is formed at the acid bright-dipping rinsing bath. The regenerated wastewater outlets of the ion exchange resin tanks of the two heavy metal wastewater zero discharge devices are communicated with a liquid inlet of a regenerated liquid treatment device after being gathered and communicated through pipelines. Therefore, after the wastewater generated by the alkaline soaking rinsing tank is treated, the generated backflow water without heavy metal components flows back to the alkaline soaking rinsing tank, the generated backflow water without heavy metal components flows back to the acidic light-emitting rinsing tank after the wastewater generated by the acidic light-emitting rinsing tank is treated, and the generated ion exchange resin tank regeneration wastewater containing heavy metal ion components after the resin regeneration is carried out on the ion exchange resin tank in the heavy metal wastewater zero discharge device corresponding to the two backflow water without heavy metal components flows into the regeneration liquid treatment device for treatment after the regeneration wastewater is collected.
The water outlet of each heavy metal rinsing bath 110 is communicated with the water inlet of the same heavy metal rinsing bath 110 after passing through a heavy metal wastewater zero discharge device 30 through a pipeline, and the regenerated wastewater outlets of the ion exchange resin tanks of the heavy metal wastewater zero discharge devices 30 corresponding to all the heavy metal rinsing baths are communicated with the liquid inlet of a regenerated liquid treatment device 40 after being gathered and communicated through pipelines.
In this embodiment, the water outlet (located in the first groove at the front end) of the first tricolor water washing tank 110a is communicated with the water inlet (located in the second groove at the front end) of the first tricolor water washing tank 110a after passing through a heavy metal wastewater zero discharge device through a pipeline, and a circulation loop is formed at the first tricolor water washing tank because the first groove and the second groove are communicated. The second three-color washing tank 110b is provided as the first three-color washing tank, and details thereof are not repeated in this embodiment. Therefore, each three-color rinsing bath is provided with a set of heavy metal wastewater zero discharge device matched with the three-color rinsing bath for treatment. The regenerated wastewater outlets of the ion exchange resin tanks of the heavy metal wastewater zero-discharge devices corresponding to all the heavy metal rinsing tanks are communicated with a liquid inlet of a regenerated liquid treatment device after being gathered and communicated through pipelines. Like this, the waste water that first three-color wash bowl and second three-color wash bowl produced is handled the back through heavy metal waste water zero discharge apparatus respectively, and the backward flow water that does not contain heavy metal composition that produces flows back to in the first three-color wash bowl or the second three-color wash bowl that correspond, and the ion exchange resin jar among the heavy metal waste water zero discharge apparatus carries out the ion exchange resin jar regeneration waste water that contains heavy metal composition that produces behind the resin regeneration and gets into regeneration liquid processing apparatus.
Acid-base waste water zero release processing apparatus 20 in this applicationComprises a pump 201, a first pre-filter 202, an oil remover 203 and a microfiltration membrane filter 204 which are sequentially communicated in series according to the flowing direction of waste liquid. When the device is used, wastewater generated in the manufacturing process is firstly conveyed into a first prefilter through a pump and a pipeline to filter and remove large-particle impurities and the like, then conveyed into an oil remover through the pipeline to remove grease components contained in the wastewater and waste liquid, and finally conveyed into a microfiltration membrane filter to be subjected to further microfiltration to remove smaller impurities, and then the treated wastewater flows back to a manufacturing process line through the pipeline.
Heavy metal wastewater zero discharge device 30 in this applicationComprising a second pre-filter 301 and an ion exchange resin tank 302 in serial communication with the second pre-filter in the direction of waste flow. This heavy metal waste water zero discharge apparatus handles the kind and the content size of harmful substance in the waste water as required, and its inner member structure has arranged two kinds of modes:
the first is serial-type heavy metal waste water zero discharge apparatus 30a, and this serial-type heavy metal waste water zero discharge apparatus sets up two second prefilters 301 of arranging in parallel at the end of intaking, and one of these two second prefilters is for using the prefilter and another is reserve prefilter, only uses one of them to filter when normally operating promptly, and waste water waste liquid does not get into another prefilter, and reserve prefilter only uses when using the prefilter to break down. The liquid outlets of the two second prefilters are collected by a pipeline and then connected with a plurality of ion exchange resin tanks 302 in series, that is, the prefilters and the ion exchange resin tanks are connected in series, wherein the number of the ion exchange resin tanks is set according to the generation amount of the process wastewater, and is set to be three in this embodiment. Preferably, the serial heavy metal wastewater zero discharge device is communicated with the heavy metal rinsing bath, and in this embodiment, a set of serial heavy metal wastewater zero discharge device is respectively disposed at the first tricolor rinsing bath and the second tricolor rinsing bath. When using, the produced waste water of first three-color rinsing bath or the three-color rinsing bath of second passes through the pipeline at first and gets into after carrying out the prefilter with the prefilter and detach large particle impurity, reentrant ion exchange resin jar in proper order, the ion exchange resin who utilizes in the jar carries out the replacement of heavy metal ion, the produced backward flow water reflux that does not contain heavy metal ion of this ion exchange resin jar flows back to first three-color rinsing bath or the three-color rinsing bath of second in, produced ion exchange resin jar regeneration waste water that contains heavy metal ion composition after this ion exchange resin jar carries out resin regeneration gets into regeneration liquid processing apparatus after gathering through the pipeline. The types of the resin filled in the ion exchange resin tanks are selected according to different heavy metal ions to be treated, in the specific embodiment, the models of the ZGC151 and the ZGC351 are selected, and the models of the resin filled in the three ion exchange resin tanks are the ZGC151, the ZGC351 and the ZGC151 from the treatment front end to the treatment rear end in sequence.
The second is a parallel heavy metal wastewater zero discharge device 30b, which comprises a plurality of treatment routes arranged in parallel, and each treatment route comprises a second pre-filter 301 and at least one ion exchange resin tank 302 which are sequentially arranged in series. In the application, two processing routes which are arranged in parallel are arranged, and one ion exchange resin tank is arranged in each processing route. Only one of the two treatment routes arranged in parallel is an active route in the treatment process, and the other parallel route is a standby route, namely, the waste water and the waste liquid only enter the prefilter of one of the two treatment routes in the treatment process. Preferably, in this embodiment, the alkaline rinsing bath (alkaline soaking rinsing bath) is communicated with a set of parallel heavy metal wastewater zero discharge devices, and the acidic rinsing bath (acidic light-emitting rinsing bath) is communicated with a set of parallel heavy metal wastewater zero discharge devices. When the ion exchange resin regeneration wastewater treatment device is used, wastewater flowing out of the alkaline soaking rinsing bath or the acidic light-emitting rinsing bath enters a second prefilter in one of two parallel lines through a pipeline, is preliminarily prefiltered to remove large-particle impurities and the like, then enters the ion exchange resin tank connected with the second prefilter in series in the line, the ion exchange resin in the tank is utilized to carry out heavy metal ion replacement, the ion exchange resin tank in the treatment line generates ion exchange resin regeneration wastewater containing heavy metal ion components in the ion exchange resin regeneration process and enters the regeneration liquid treatment device after being converged through the pipeline, and backflow water containing no heavy metal ion components generated by the ion exchange resin tank flows back into the alkaline soaking rinsing bath or the acidic light-emitting rinsing bath. The type of the resin filled in the ion exchange resin tank is selected according to different heavy metal ions to be treated, in the embodiment, the ZGC151 type is selected as the ion exchange resin used in the parallel heavy metal wastewater zero discharge device communicated with the alkaline soaking rinsing bath, and the D890 type is selected as the ion exchange resin used in the parallel heavy metal wastewater zero discharge device communicated with the acidic light-emitting rinsing bath.
High concentration waste water zero release processing apparatus's in this application structure set up with regeneration liquid processing apparatus's knot The structure is consistent, and only the treated liquid is different. The following describes the regeneration liquid treatment apparatus 40 in detail as an example.The regenerated liquid treatment device 40 comprises a collecting water tank 401, a low-temperature vacuum evaporator 402, an adsorption water tank 403 and a filter press 404 which are sequentially arranged according to the flow direction of wastewater, wherein the low-temperature vacuum evaporator 402 comprises a cooling water tower 402a and an evaporator body 402b, a liquid inlet 402a1 of the cooling water tower is communicated with a steam outlet 402b1 of the evaporator body, and a liquid outlet 402a2 of the cooling water tower is communicated with a condensed water inlet 402b2 of the evaporator body. The collecting water tank 401 is located at the front end of the regenerated liquid treatment device, and a liquid inlet of the collecting water tank is communicated with a pipeline for feeding liquid. The liquid outlet of the collection water tank 401 is communicated with the liquid inlet 402c of the low-temperature vacuum evaporator through a pump and a pipeline, the evaporative cooling water outlet 402d of the low-temperature vacuum evaporator is communicated with the liquid inlet of the adsorption water tank 403, and the waste solid discharge port 402c of the low-temperature vacuum evaporator is communicated with an external collection device. The liquid outlet of the adsorption water tank 403 is communicated with the liquid inlet of the filter press 404 through a pump and a pipeline, wherein a charging pipeline for charging activated carbon powder is arranged above the adsorption water tank. When the device is used, liquid to be treated is collected by the collecting water tank and then enters the evaporator body of the low-temperature vacuum evaporator through the pump and the pipeline for solid-liquid separation, evaporated water is cooled by the cooling water tower and then enters the adsorption water tank, and generated solid waste is collected and then is subjected to centralized treatment. Adding activated carbon powder into the adsorption water tank, adsorbing residual impurities in water by using the activated carbon powder, conveying mixed liquid in the water tank to a filter press through a pump and a pipeline for solid-liquid separation, collecting solids generated by the filter press, and collecting generated liquid through another collection water tank, wherein the amount of water in the final collection water tank is greatly reduced compared with the total waste water and waste liquid amount generated by a process line.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a waste water waste liquid zero release circulation retrieval and utilization processing apparatus on surface chemical treatment process line sets up in surface chemical treatment process line side, surface chemical treatment process line includes the acidizing fluid treatment tank, is located the acidizing fluid wash bowl at acidizing fluid treatment tank rear, alkali lye treatment tank, the alkali lye wash bowl at alkali lye treatment tank rear, acid treatment tank, is located the acid wash bowl at acid treatment tank rear, alkaline treatment tank, is located the alkaline wash bowl at alkaline treatment tank rear, heavy metal treatment tank and the heavy metal wash bowl that is located heavy metal treatment tank rear, its characterized in that: the device comprises a plurality of groups of acid-base wastewater zero-discharge treatment devices, a plurality of groups of heavy metal wastewater zero-discharge devices, a high-concentration wastewater zero-discharge treatment device and a plurality of groups of regeneration liquid treatment devices, wherein a water outlet of an acid washing tank positioned at the downstream of a process is communicated with a water inlet of an acid washing tank positioned at the upstream of the process through an acid-base wastewater zero-discharge treatment device by a pipeline, and a water outlet of the acid washing tank positioned at the upstream of the process is communicated with a water inlet of the acid washing tank positioned at the downstream of the process through another acid-base wastewater zero-discharge treatment device by a pipeline to form; the water outlet of the alkali liquor rinsing bath positioned at the downstream of the manufacturing process is communicated with the water inlet of the alkali liquor rinsing bath positioned at the upstream of the manufacturing process through an acid-alkali wastewater zero-discharge treatment device by a pipeline; the water outlet of the acid liquor treatment tank, the water outlet of the alkali liquor treatment tank and the water outlet of the alkali liquor rinsing tank positioned at the upstream of the process are communicated with the liquid inlet of a high-concentration wastewater zero-discharge treatment device after being gathered and communicated through pipelines;
the water outlet of the alkaline rinsing bath is communicated with the water inlet of the same alkaline rinsing bath after passing through a heavy metal wastewater zero discharge device through a pipeline; the water outlet of the acidic rinsing bath is communicated with the water inlet of the same acidic rinsing bath after passing through a heavy metal wastewater zero discharge device through a pipeline; the regenerated wastewater outlet of the ion exchange resin tank of the heavy metal wastewater zero-discharge device is communicated with the liquid inlet of a regenerated liquid treatment device after being gathered and communicated through a pipeline; every the delivery port of heavy metal wash bowl is equallyd divide and is communicate with the water inlet of same heavy metal wash bowl behind a heavy metal waste water zero discharge apparatus through the pipeline respectively, and all heavy metal wash bowls correspond the heavy metal waste water zero discharge apparatus's that the ion exchange resin jar regeneration waste water export is through gathering the intercommunication with a regeneration liquid processing apparatus's inlet after the pipeline.
2. The surface chemical treatment process line wastewater and waste liquid zero-discharge recycling treatment device according to claim 1, characterized in that: the acid-base wastewater zero-discharge treatment device comprises a pump, a first prefilter, an oil remover and a microfiltration membrane filter which are sequentially communicated in series according to the flowing direction of the waste liquid.
3. The surface chemical treatment process line wastewater and waste liquid zero-discharge recycling treatment device according to claim 1, characterized in that: the heavy metal wastewater zero discharge device comprises a second prefilter and an ion exchange resin tank which is communicated with the second prefilter in series according to the flow direction of waste liquid.
4. The surface chemical treatment process line wastewater and waste liquid zero-discharge recycling treatment device according to claim 3, characterized in that: the heavy metal wastewater zero discharge device is a serial heavy metal wastewater zero discharge device, the serial heavy metal wastewater zero discharge device comprises two second prefilters which are arranged in parallel, liquid outlets of the two second prefilters are connected with a plurality of ion exchange resin tanks in series after being gathered through pipelines, wherein one of the two second prefilters is an in-use prefilter, and the other one of the two second prefilters is a standby prefilter.
5. The surface chemical treatment process line wastewater and waste liquid zero-discharge recycling treatment device according to claim 4, characterized in that: the serial heavy metal wastewater zero-discharge device is communicated with the heavy metal rinsing bath.
6. The surface chemical treatment process line wastewater and waste liquid zero-discharge recycling treatment device according to claim 3, characterized in that: the heavy metal wastewater zero discharge device is a parallel heavy metal wastewater zero discharge device, the parallel heavy metal wastewater zero discharge device comprises a plurality of treatment routes which are arranged in parallel, each treatment route comprises a second prefilter and at least one ion exchange resin tank which are sequentially arranged in series, one treatment route is an in-use treatment route, and the rest treatment routes are standby treatment routes.
7. The surface chemical treatment process line wastewater and waste liquid zero-discharge recycling treatment device according to claim 6, characterized in that: the parallel heavy metal wastewater zero discharge device is communicated with the alkaline rinsing bath and/or the acidic rinsing bath.
8. The surface chemical treatment process line wastewater and waste liquid zero-discharge recycling treatment device according to claim 1, characterized in that: the regenerated liquid treatment device comprises a collecting water tank, a low-temperature vacuum evaporator, an adsorption water tank and a pressure filter which are sequentially arranged according to the flowing direction of wastewater, wherein a liquid inlet of the collecting water tank is communicated with a pipeline for feeding liquid, a liquid outlet of the collecting water tank is communicated with a liquid inlet of the low-temperature vacuum evaporator through a pump and a pipeline, an evaporative cooling water outlet of the low-temperature vacuum evaporator is communicated with a liquid inlet of the adsorption water tank, and a liquid outlet of the adsorption water tank is communicated with a liquid inlet of the pressure filter through the pump and the pipeline; the structure of the high-concentration wastewater zero-discharge treatment device is consistent with that of the regenerated liquid treatment device.
9. The surface chemical treatment process line wastewater and waste liquid zero-discharge recycling treatment device according to claim 8, characterized in that: the low-temperature vacuum evaporator comprises a cooling water tower and an evaporator body, wherein a liquid inlet of the cooling water tower is communicated with a steam outlet of the evaporator body, and a liquid outlet of the cooling water tower is communicated with a condensate water inlet of the evaporator body.
10. The surface chemical treatment process line wastewater and waste liquid zero-discharge recycling treatment device according to claim 8, characterized in that: and a feeding pipeline for feeding activated carbon powder is arranged above the adsorption water tank.
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