CN102616915B - Device and method for comprehensively treating water body - Google Patents

Abstract

The invention discloses a water body comprehensive treatment device and method. The water body comprehensive treatment device includes: a water inlet pipe; a preprocessor, which performs multi-stage fine filtration pretreatment on the water flowing in from the water inlet pipe; at least one catalytic oxidation reactor, which performs catalytic oxidation on the water pretreated by the preprocessor. Purification; the outlet pipe discharges the water treated by the catalytic oxidation reactor. The comprehensive water body treatment device of the present invention can control the size of the treated water by adjusting the volume of the preprocessor, increasing the number of catalytic oxidation reactors and the unit processing capacity of the reactor, and at the same time, the overall device can also be used in multi-stage parallel connection of building blocks, Therefore, the efficient and comprehensive treatment of large-capacity water bodies is realized. The device has the advantages of simple structure, long service life and good comprehensive treatment effect.

Description

A kind of comprehensive water treatment device and method

technical field

The present invention relates to a water body comprehensive treatment device and method, in particular to a water body comprehensive treatment device and method suitable for organic waste water purification and sterilizing algae, the water body comprehensive treatment device and method can be widely used in industrial sewage, domestic sewage, Comprehensive treatment of garbage permeate, landscape water, tap water, differentiated water supply for household quarters, and drinking water for rural towns.

Background technique

As we all know, for sewage purification, the removal of organic matter in water and the sterilization of algae are always a technical problem in the industry, and the sterilization of algae depends largely on the use of a large number of chemicals to achieve. In the process of drinking water purification, the use of chlorine gas as an oxidant to disinfect and sterilize tap water has its fatal weakness, that is, various chlorine-containing organic compounds such as intermediate products such as chloroform, chloroethane, and carbon tetrachloride will be generated, which bring Most of the secondary polluting organic substances are priority pollutants, which will endanger human health after drinking. Using ozone to disinfect tap water is safer than chlorine, but it will also form some toxic intermediate products, and the maintenance time of ozone is short, the water quality tastes bad, and the cost is high. Advanced treatment with activated carbon adsorption, polymer filter element filtration, etc. can only remove large suspended particles, inorganic ions and some organic substances in water, and has low removal efficiency for small molecular organic substances such as chloroform, ethyl chloride, and carbon tetrachloride. , and the filter element needs to be replaced frequently. Therefore, the effect of the advanced treatment of the above-mentioned water bodies is not ideal, and the quality of the treated water basically cannot meet the standard for direct drinking. The RO reverse osmosis method is used for advanced treatment of tap water. Although it can meet the standard of direct drinking water, it also has low removal efficiency of chloroform, and the trace elements needed by the human body are filtered out. The water quality after treatment is weakly acidic, and the water loss is large. large size and high operating costs. Catalytic oxidation water treatment technology can effectively solve the above problems, but due to the unsatisfactory reactor structure design and process, the small amount of treated water and low efficiency restrict the rapid development of scale.

At present, the advanced treatment of catalytic oxidation water at home and abroad can be roughly divided into suspension system and fixed structure according to the structure of the reactor. Catalyst recovery in suspension system reactors is difficult and difficult to be applied on a large scale. The fixed structure mostly adopts carrier coating or smearing, which has the problems of small contact surface area and low efficiency. Japanese Laid-Open Patent No. 4-141294 uses porous sintered material or optical fiber as a catalyst carrier to increase the surface area, but a large part of the light cannot be irradiated, and the price is expensive and impractical. Chinese utility model patent 95244568 discloses a fixed-film photocatalytic oxidation water quality deep purifier, Chinese utility model patent 96251030 discloses a photocatalytic water quality processor, and invention patent CN1257838 discloses continuous photocatalytic purification of wastewater containing organic pollutants and A method and equipment for drinking water. The method adopts a suspension system to realize continuous treatment, but it is difficult to realize high-capacity and high-efficiency treatment. The water treatment equipment in the prior art has the following common disadvantages: (1) an additional stirrer is required to increase the pollution source, noise, and failure rate; (2) the reaction time is long, and it is difficult to achieve continuous treatment; (3) the catalyst carrier, It is difficult to seal the lamp protection tube and the upper and lower ends; (4) the processing capacity is small and the expansion is difficult; (5) the main consideration is to increase the overall efficiency by increasing the catalyst carrier area and improving the activity of the catalyst, which restricts the large-scale development of large capacity (6) complex structure, inconvenient installation and maintenance.

Contents of the invention

The present invention is proposed in order to solve the above-mentioned problems, and its purpose is to provide a kind of can control the size of the treated water by adjusting the volume of the preconditioner, increasing the number of catalytic oxidation reactors and reactor unit processing capacity, meanwhile, can also The whole device is used in multi-stage parallel connection of building blocks, so as to obtain a water body comprehensive treatment device which can enlarge the capacity of the treated water body and has a simple and feasible device structure.

For this reason, the present invention provides a kind of comprehensive treatment device of water body, and described comprehensive treatment device of water body comprises: water inlet pipe; Preprocessor, carry out multi-stage fine filtration pretreatment to the water flowing in from water inlet pipe; At least one catalytic oxidation reactor , to perform catalytic oxidation deep purification on the water pretreated by the preprocessor; the outlet pipe discharges the water treated by the catalytic oxidation reactor.

According to the present invention, the lower end of the at least one catalytic oxidation reactor is connected to the lower end of the preconditioner through the lower connection pipe, and the upper end of the at least one catalytic oxidation reactor is connected to the preconditioner through the upper connection pipe. upper end. The inside of the preprocessor is provided with interlayers and multi-stage filter layers formed of various filter materials from top to bottom.

Optionally, the catalytic oxidation reactor includes: a reactor shell; a catalyst carrier disposed on the inner surface of the reactor shell; a catalyst coating disposed on the surface of the catalyst carrier; a light source assembly, one end of which is fixed on One end of the reactor shell is disposed inside the reactor shell for providing trigger energy to the catalyst coating.

Optionally, the catalytic oxidation reactor includes: a reactor shell; a light source assembly, one end of which is fixed to one end of the reactor shell and arranged inside the reactor shell; a catalyst coating coated on the light emitting the outer surface of the unit.

Preferably, the catalyst of the catalyst coating is a titanium-based composite catalyst or a platinum catalyst. The material of the catalyst carrier is glass, ceramics, stainless steel, metal, plastic or resin material. The light emitted by the light source assembly is ultraviolet light or visible light, or the light source assembly is a charged body or a heat radiation substance that generates catalyst trigger energy. The water inlet pipe activates dissolved oxygen in the water.

In addition, the present invention provides a comprehensive water body treatment method, the water body comprehensive treatment method uses a water body comprehensive treatment device to carry out water body comprehensive treatment, and the water body comprehensive treatment device includes a water inlet pipe, a preprocessor, at least one catalytic oxidation reactor and The water outlet pipe, the comprehensive water treatment method includes the following steps: using the water inlet pipe to activate dissolved oxygen for the water to be treated; using a preprocessor to perform multi-stage fine filtration pretreatment on the water after dissolved oxygen activation; using a catalytic oxidation reactor to The water pretreated by the preprocessor is subjected to catalytic oxidation for deep purification; the water that has been catalytically oxidized is discharged through the outlet pipe.

The comprehensive water body treatment device and method of the present invention have the following advantages:

(1) This treatment method itself is non-toxic and does not produce secondary pollution;

(2) There is no need to add other chemicals, that is, the water body is fully in contact with the catalyst coating (film), the catalyst obtains trigger energy, and produces an active factor with strong oxidative properties, which can efficiently decompose and remove organic matter in the water body, killing Kill algae and flora;

(3) Guaranteed to kill bacteria and algae under the double action of ultraviolet light and free radicals;

(4) The water body comprehensive treatment device of the present invention is an integral structure, as long as the water is fed from the water inlet pipe with a lower water pressure, the water to be purified can flow according to the weight of the water itself, thereby being purified, so No need to provide greater water pressure;

(5) Catalytic oxidation can be used to treat a large amount of water. On the one hand, while maintaining the unit processing capacity of the reactor, the requirement of enlarging the capacity of the water body can be achieved by enlarging the preprocessor and increasing the number of catalytic oxidation reactors. On the other hand, the The overall device is used in multi-stage parallel building blocks to achieve the purpose of amplifying the capacity of the water body; and the reactor or the overall device can be used alone or combined to expand capacity;

(6) The device has a scientific and reasonable structure, good effect, small footprint, wide application, no noise in static operation, energy saving and environmental protection, safe, simple and feasible, low manufacturing and operating costs, and the purified water is pure and fresh;

(7) The device is suitable for advanced treatment of organic wastewater, industrial wastewater, garbage wastewater, and drinking water.

Description of drawings

Fig. 1 is the perspective view showing the integrated water treatment device of the present invention;

Fig. 2 is the top view showing the integrated water treatment device of the present invention;

Fig. 3 is the cross-sectional view of the comprehensive water treatment device of the present invention taken based on the A-A line of Fig. 2;

Fig. 4 is a cross-sectional view of main parts of the catalytic oxidation reactor of the comprehensive water body treatment device of the present invention.

Explanation of main symbols: 100 is the water inlet pipe, 200 is the preprocessor, 220 is the interlayer, 230 is the multi-stage filter layer, 240 is the filter material, 300 is the catalytic oxidation reactor, 310 is the catalyst carrier, 320 is the catalyst membrane, 330 340 is an upper connecting pipe, 350 is a lower connecting pipe, 400 is a water outlet pipe, and 500 is water.

Detailed ways

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a perspective view showing the comprehensive water treatment device of the present invention, and Fig. 2 is a top view showing the comprehensive water treatment device of the present invention.

As shown in FIG. 1 and FIG. 2 , the comprehensive water treatment device of the present invention includes a water inlet pipe 100 , a preprocessor 200 , a catalytic oxidation reactor 300 and a water outlet pipe 400 .

Hereinafter, each component of the comprehensive water body treatment device of the present invention will be described in detail with reference to FIG. 3 and FIG. 4 .

Fig. 3 is a cross-sectional view of the comprehensive water treatment device of the present invention taken along line A-A of Fig. 2 .

As shown in Figure 3, the comprehensive water body treatment device of the present invention includes: a water inlet pipe 100. Preferably, in order to increase the oxygen content in the water, the water to be treated can be added to the water inlet pipe 100 by increasing the The contact area of air is carried out dissolved oxygen activation to water, wherein, can adopt any method in this field to increase the contact area of water and air; Preprocessor 200, carry out pretreatment to the water flowing in from water inlet pipe 100; At least one Catalytic oxidation reactor 300, the lower end of catalytic oxidation reactor 300 is connected to the lower end connection port 250 positioned at the lower end side of preprocessor 200 through lower connecting pipe 350, so as to flow out from the lower end of preprocessor 200, pass through preconditioner 200, the pretreated water is further purified by catalytic oxidation; the water outlet pipe 400 discharges the water that flows out from the upper end of the catalytic oxidation reactor 300 and has been treated by catalytic oxidation advanced purification after passing through the catalytic oxidation reactor 300.

In this embodiment, the lower ends of the plurality of catalytic oxidation reactors 300 are respectively connected to the plurality of lower end connection ports 250 on the side of the lower end of the preprocessor 200 through a plurality of lower connecting pipes 350 . Also, the plurality of lower end connection ports 250 may be formed at any position of the lower end of the pre-processor 200 , and are not limited to being formed on the side of the lower end of the pre-processor 200 .

In addition, in this embodiment, the inner upper end of the pre-conditioner 200 has a partition 220 , and the partition 220 has an insertion port 221 for inserting one end of the water inlet pipe 100 . The upper ends of the plurality of catalytic oxidation reactors 300 are respectively connected to a plurality of upper end connection ports 260 located above the compartment 220 and formed on the side of the upper end of the preprocessor 200 through a plurality of upper connecting pipes 340 . The water outlet pipe 400 is connected to the water outlet pipe connection port 270 above the partition 220 and formed on the side of the upper end of the preprocessor 200 . Thus, the water deeply purified by the plurality of catalytic oxidation reactors 300 flows into the cavity 280 formed at the upper end of the preprocessor 200 . In addition, when the water level reaches the height of the water outlet pipe 400 , the highly treated water will flow out through the water outlet pipe 400 .

In addition, there is no particular limitation on the size of the preprocessor 200 , and various sizes can be designed according to the application (such as organic wastewater, industrial wastewater, garbage wastewater, advanced treatment of drinking water, etc.). For example, when the preprocessor 200 is cylindrical, its diameter can be designed to be 500 mm to 1000 mm (the height can be arbitrary), thus, multiple catalytic oxidation reactors 300 can be arranged around the preprocessor 200 . Those skilled in the art should know that although the catalytic oxidation water purification device of the present invention has three catalytic oxidation reactors shown in the figure, one or more catalytic oxidation reactors can be provided as required.

In addition, the processing capacity of one catalytic oxidation reactor is limited, but the present invention can increase the processing capacity by arranging multiple catalytic oxidation reactors, thereby solving the technical problem that catalytic oxidation cannot be processed in large quantities. Moreover, the present invention can be used simultaneously by connecting a plurality of catalytic oxidation water purification devices of the present invention in parallel, thereby increasing the processing capacity.

Although not shown in the figure, in order to isolate the cavity 280 from the outside and maintain the purified state of the water, an upper part for covering the preprocessor 200 may be provided on the upper part of the preprocessor 200 (that is, for covering The upper part of the cavity 280) is opened with a cover (not shown), and the cover should be formed with an opening (not shown) for inserting one end of the water inlet pipe 100 .

In addition, those skilled in the art should know that the present invention does not form the cavity 280 as described above, but directly connects one end of a plurality of upper connection pipes 340 connected to a plurality of catalytic oxidation reactors 300 to the outlet pipe 400. One end, so that the water after advanced treatment flows out directly through the water outlet pipe 400 .

In addition, the appearance shapes of the preprocessor 200 and the catalytic oxidation reactor 300 can be any shape of round tube or square tube.

Hereinafter, the internal configuration of the preprocessor 200 and the internal configuration of the catalytic oxidation reactor 300 will be described in detail.

As shown in Figure 3, inside the preprocessor 200, in the region from the bottom of the interlayer 220 to the top of a plurality of lower end connection ports 250, a multi-stage filter layer 230 formed by a variety of filter materials 240 is set, thus for The water flowing in from the water inlet pipe 100 is pretreated. The type of filter material 240 can be selected according to the needs of users.

Fig. 4 is a cross-sectional view of main parts of the catalytic oxidation reactor of the comprehensive water body treatment device of the present invention.

Here, first, the principle on which the catalytic oxidation reactor 300 of the present invention is based is described: that is, the semiconductor catalyst generates a strong oxidizing agent OH ^- under the condition of obtaining trigger energy, and OH ^- and _H2O molecules are oxidized into OH free radicals , and the oxidizing ability of OH free radical is the strongest among the oxidizing agents existing in water except fluorine, which can oxidize most organic pollutants and some inorganic pollutants and eventually mineralize them into CO ₂ , H ₂ O, etc. Harmless substances, and effectively kill bacteria, so that the water quality can be deeply purified, almost non-selective. The basic reaction formula of catalytic oxidation is shown below taking methanol and nitrite as examples:

TiO ₂ +hγ→e ^- +h ⁺

H ₂ O+h ⁺ →OH·+H ⁺

H ⁺ +e ^- → H ·

HCOH+OH→HCOOH+H·

HCOOH+OH→CO ₂ +H ₂ O+H·

H·+H·→H ₂

NO ₂ ^- +OH → NO ₃ ^- +H

As shown in Figure 4, the catalytic oxidation reactor 300 includes: a reactor shell 360; a catalyst carrier 310, which is arranged on the inner surface of the reactor shell 360; a catalyst coating 320, which is arranged on the surface of the catalyst carrier 310; a light emitting unit 330, One end is fixed to the reactor shell 360 and the other end is disposed inside the reactor shell 360 for providing a light source to the catalyst coating 320 .

There can be many ways for the light emitting unit 330 to be arranged inside the reactor shell 360. For example, one end of the light emitting unit 330 is installed on a fixing plug (not shown) that is arranged on the upper end of the reactor shell 360, so that the light emitting unit 330 is located in the center of the reactor shell 360 . In the present invention, it is only necessary to install the light-emitting unit 330 inside the reactor casing 360, and any known arrangement method can be adopted for this. In addition, the light emitting unit 330 can be connected to a power source through one end of the light emitting unit 330 to emit light, which is a well-known setting method for those skilled in the art, and will not be described in detail here.

In addition, as another embodiment of the catalytic oxidation reactor, the catalytic oxidation reactor may include: a reactor shell; a light-emitting unit, one end of which is fixed to one end of the reactor shell and arranged inside the reactor shell; a catalyst coating for coating on the outer surface of the light emitting unit. Here, the light-emitting unit not only functions as a light source, but also as a catalyst carrier. Compared with the above-mentioned catalytic oxidation reactor 300, the catalyst coating of this catalytic oxidation reactor is closer to the light source, and receives more heat energy, so the efficiency is better.

In addition, the light-emitting unit of the catalytic oxidation reactor in another embodiment can be formed into a ribbon shape or a sheet shape, thereby increasing the area of the catalyst coating and improving the water purification efficiency of the device.

In addition, the catalyst of the catalyst coating can be various catalyst materials triggered by energy such as light, electricity or heat, such as titanium-based composite catalyst and platinum catalyst. Moreover, the shape of the catalyst carrier can be tubular, flake, ribbon (film) particles or mesh, and the carrier material can be glass, stainless steel, ceramics, metal, plastic, resin material and the like.

The trigger energy of the catalyst can be light energy, electric energy or thermal energy. The light emitted by the light emitting unit may be ultraviolet light or visible light.

Hereinafter, the water body flow process will be described.

As shown in Figures 1 to 4, the water to be treated flows from the water inlet pipe 100 into the preprocessor 200 for pre-treatment, and the pretreated water passes through the bottom of the catalytic oxidation reactor 300 at a set unit volume flow rate and flow rate. The catalytic oxidation reactor 300 rises slowly, so that the water 500 is deeply purified by catalytic oxidation, and the purified high-quality water after time t (predetermined time period) flows into the water storage tank or pool through the outlet pipe 400 at the upper end of the catalytic oxidation reactor 300 .

The advantages of the water body comprehensive treatment device and method of the present invention are:

(1) This treatment method itself is non-toxic and does not produce secondary pollution;

(2) There is no need to add other chemicals, that is, the water body is fully in contact with the catalyst coating (film), the catalyst obtains trigger energy, and produces an active factor with strong oxidative properties, which can efficiently decompose and remove organic matter in the water body, killing Kill algae and flora;

(3) Guaranteed to kill bacteria and algae under the double action of ultraviolet light and free radicals;

(4) The water body comprehensive treatment device of the present invention is an integral structure, as long as the water is fed from the water inlet pipe with a lower water pressure, the water to be purified can flow according to the weight of the water itself, thereby being purified, so No need to provide greater water pressure;

(5) Catalytic oxidation can be used to treat a large amount of water. On the one hand, while maintaining the unit processing capacity of the reactor, the requirement of enlarging the capacity of the water body can be achieved by enlarging the preprocessor and increasing the number of catalytic oxidation reactors. On the other hand, the The overall device is used in multi-stage parallel building blocks to achieve the purpose of amplifying the capacity of the water body; and the reactor or the overall device can be used alone or combined to expand capacity;

(6) The device has a scientific and reasonable structure, good effect, small footprint, wide application, no noise in static operation, energy saving and environmental protection, safe, simple and feasible, low manufacturing and operating costs, and the purified water is pure and fresh;

(7) The device is suitable for advanced treatment of organic wastewater, industrial wastewater, garbage wastewater, and drinking water.

Claims (8)

1. a comprehensive water-body treatment unit is characterized in that described comprehensive water-body treatment unit comprises:

Water inlet pipe;

Pretreater, carry out the multiple fine filteration pre-treatment to the water flowed into from water inlet pipe;

A plurality of catalyst oxidation reactors, to carrying out the catalyzed oxidation deep purifying through the pretreated water of pretreater;

Rising pipe, the water that will process through catalyst oxidation reactor is discharged,

The upper end of the inside of described pretreater has interlayer, and the top that is positioned at described interlayer is formed with the cavity that the side by the upper end of described interlayer and described pretreater forms, and the side of this cavity is formed with the upper end Link Port,

The lower end of described a plurality of catalyst oxidation reactors is connected to the lower end of described pretreater by the bottom pipe connecting, the upper end of described a plurality of catalyst oxidation reactors is connected to described upper end Link Port by the top pipe connecting, so that flow in described cavity through the water of described a plurality of catalyst oxidation reactor deep purifyings

Described rising pipe is connected in the rising pipe Link Port of the side that is formed on described cavity.

2. comprehensive water-body treatment unit according to claim 1, is characterized in that the cascade filtration layer that the inside of described pretreater is provided with from top to bottom interlayer and is formed by multiple filtrate.

3. comprehensive water-body treatment unit according to claim 1, is characterized in that described catalyst oxidation reactor comprises: shell of reactor; Support of the catalyst, be arranged on the inner surface of described shell of reactor; Catalyst coat, be arranged on the surface of described support of the catalyst; Light source assembly, an end is fixed in an end of described shell of reactor and is arranged at the inside of described shell of reactor, with for to described catalyst coat, providing trigger energy.

4. comprehensive water-body treatment unit according to claim 1, is characterized in that described catalyst oxidation reactor comprises: shell of reactor; Light source assembly, an end is fixed in an end of described shell of reactor and is arranged on the inside of described shell of reactor; Catalyst coat, coat the outside surface of luminescence unit.

5. according to the described comprehensive water-body treatment unit of claim 3 or 4, the catalyzer that it is characterized in that described catalyst coat is titanium based composite catalyst or platinum catalyst.

6. according to the described comprehensive water-body treatment unit of claim 3 or 4, the material that it is characterized in that described support of the catalyst is glass, pottery, metal or resin material.

7. according to the described comprehensive water-body treatment unit of claim 3 or 4, it is characterized in that the light that described light source assembly sends is UV-light or visible ray, or described light source assembly is for producing electrified body, the thermal radiation material of catalyzer trigger energy.

8. comprehensive water-body treatment unit according to claim 1, is characterized in that described water inlet pipe carries out the dissolved oxygen activation to water.

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