CN210085228U - A mobile sludge plate and frame filter press dehydration and cleaning integrated device - Google Patents

Abstract

The utility model discloses a portable mud sheet frame filter-pressing dehydration and washing integrated device belongs to environmental engineering technical field. The device of the utility model mainly comprises a conditioning tank 1, a plate and frame filter press 2, a pH adjusting tank 4, an active coke adsorption tank 5, an aeration tank 6, a coagulation tank 7, a sedimentation tank 8, a first-level reverse osmosis device 9 and a second-level reverse osmosis device 10. The utility model integrates the sludge treatment system, is suitable for the conditions of small sludge yield, emergency sludge treatment and the like, and the treated filter pressing liquid can reach the B-level standard of the wastewater discharge town sewer water quality standard (CJ 343-2010); furthermore, the utility model discloses focus on retrieving phosphorus, embodied the theory of resource recycling.

Description

A mobile sludge plate and frame filter press dehydration and cleaning integrated device

technical field

The utility model relates to a mobile sludge plate and frame filter-pressing dehydration and cleaning integrated device, which belongs to the technical field of environmental engineering.

Background technique

With the development of water treatment projects in China, the amount of sludge produced by sewage treatment plants is increasing. The excess sludge has a high moisture content, the organic matter is easily corrupted, the odor is foul and contains a large amount of heavy metals, bacteria and other toxic and harmful substances. The state strictly limits the sludge moisture content standards for the treatment and disposal of sludge. After treatment, the moisture content is less than 60% before it can be mixed with garbage for landfill disposal. However, at present, some small sewage treatment plants and domestic sewage treatment systems in rural areas in my country generally do not have a special sludge treatment system due to their small treatment capacity; the sludge produced in artificial lakes and landscape water bodies also contains a large amount of organic matter. In addition, the N and P in the sludge are easily released by agitation, resulting in eutrophication of the water body; a large amount of sludge will also be deposited at the bottom of rainwater pipes and river channels. If it is not cleaned in time, the rainy season may lead to poor drainage and cause flooding. The sludge treatment in these places should be regularly, timely and fast, and the treatment scale should not be too large. However, the existing sludge treatment equipment is large and difficult to move, making it impossible to flexibly apply the above scenarios.

Utility model content

In view of the above problems, the utility model provides a mobile sludge plate and frame filter press dehydration and cleaning integrated device, which is aimed at treating sludge with small output and requiring regular or emergency treatment, avoiding the secondary pollution to the environment. At the same time, the by-products produced in the operation process can be recycled and reused, which relieves the pressure on the environment.

The utility model relates to a mobile sludge plate and frame filter press dehydration and cleaning integrated device, the device comprises a sludge deep dewatering system, a cleaning system, a resource recovery system and a transportation device,

The sludge dewatering system comprises a conditioning tank (1), a plate and frame filter press (2), a pH adjustment tank (4), an activated coke adsorption tank (5), an aeration tank (6), and a coagulation tank (7) , a sedimentation tank (8), a primary reverse osmosis device (9), and a secondary reverse osmosis device (10);

The resource recovery system comprises a sludge collection device (3), a phosphorus precipitation collection device (11) and a concentrated water collection device (12);

The transport device is a transport vehicle (29);

Specifically, the sludge discharge end of the conditioning tank (1) is connected to the plate and frame filter press (2) through a screw pump (16), and the plate and frame filter press (2) is connected to a sludge collection device (3), and the plate and frame filter press (2) is connected to a sludge collection device (3). The outlet pipe of the machine (2) is connected with the pH adjustment tank (4), the outlet pipe of the pH adjustment tank (4) is connected with the activated coke adsorption tank (5), and the upper water outlet pipe of the activated coke adsorption tank (5) is connected to the activated coke adsorption tank (5) through a conveying pump (23). The aeration tank (6) is connected, the aeration tank (6), the coagulation tank (7), and the sedimentation tank (8) are separated by baffles in sequence, and the phosphorus precipitation collection device (11) is connected to the bottom of the sedimentation tank (8). connection, the water outlet of the sedimentation tank (8) is connected with the primary reverse osmosis device (9), the primary reverse osmosis device (9) is connected with the secondary reverse osmosis device (10), the primary reverse osmosis device (9) and the secondary reverse osmosis device (10) are connected. The reverse osmosis devices (10) are all connected to the concentrated water collection device (12), one of the water outlets of the secondary reverse osmosis device (10) is connected to the outside, and the other water outlet is connected to the plate and frame filter press (2).

In one embodiment of the present invention, the cleaning system is: the water outlet of the secondary reverse osmosis device 10 is connected to the plate and frame filter press 2 through the conveying pump 28 for cleaning the plate and frame filter press 2 .

In an embodiment of the present invention, specifically, the mud discharge end of the conditioning tank 1 is connected to the plate and frame filter press 2 through a screw pump 16, and the plate and frame filter press 2 is connected to an external sludge collection device 3. The outlet pipe of the filter 2 is connected with the pH adjustment tank 4 through the delivery pump 17. The pH adjustment tank 4 is equipped with a No. 2 pharmaceutical storage tank 19 for adjusting the pH. The pH adjustment tank 4 outlet pipe and the active coke adsorption tank 5 pass through the delivery pump 20. The upper water outlet pipe of the activated coke adsorption tank 5 is connected to the aeration tank 6 through the conveying pump 23. The aeration tank 6, the coagulation tank 7 and the sedimentation tank 8 are separated by baffles in turn. The phosphorus-containing precipitation collection device 11 and the The bottom of the sedimentation tank 8 is connected, the water outlet of the sedimentation tank 8 is connected with the primary reverse osmosis device 9 through the delivery pump 27, the primary reverse osmosis device 9 is connected with the secondary reverse osmosis device 10, and the primary reverse osmosis device 9 and the secondary reverse osmosis device are connected. The devices 10 are all connected to the concentrated water collection device 12 , one of the water outlets of the secondary reverse osmosis device 10 is connected to the outside, and the other water outlet is connected to the plate and frame filter press 2 through a transfer pump 28 .

In an embodiment of the present invention, the No. 1 medicine storage tank (13) and the conditioning pool (1) are connected through a medicine delivery control box (14).

In an embodiment of the present invention, the No. 1 chemical storage tank 13 controls the dosage of the chemical through the chemical conveying control box 14 for conditioning the sludge.

In an embodiment of the present invention, a stirrer 18 is provided inside the pH adjustment tank 4 .

In an embodiment of the present invention, the activated coke adsorption tank 5 has a built-in activated coke filler 21 and a rock support layer 22.

In an embodiment of the present invention, the pH adjustment tank 4 is connected to the bottom of the activated coke adsorption tank 5 .

In an embodiment of the present invention, the height of the baffle plate enables the mixed liquid to pass through the aeration tank 6 , the coagulation tank 7 and the sedimentation tank 8 in sequence by the action of gravity.

In an embodiment of the present invention, an aeration system 24 is provided at the bottom of the aeration tank 6, a No. 3 chemical storage tank 26 is provided outside the coagulation tank 7, and a built-in agitator 25; the sedimentation tank 8. A phosphorus-containing precipitation collection device 11 is externally connected to the bottom for collecting precipitation for phosphorus resource recovery.

In an embodiment of the present invention, the conditioning agents in the No. 1 agent storage tank 13 are FeCl ₃ , lime, and polyacrylamide (PAM), and the mass ratio of the three is 3:15:0.7. Among them, FeCl ₃ and lime can change the binding force between particles and water in the sludge and improve the dewatering performance of the sludge; PAM can flocculate suspended particles through electric neutralization and adsorption bridging.

In an embodiment of the present invention, the pH in the pH adjustment tank 4 is 7.0-8.0.

In an embodiment of the present invention, the agent added in the coagulation tank 7 is polyaluminum chloride (PAC), for the purpose of chemical phosphorus removal.

The beneficial effects obtained by the utility model:

(1) First, add conditioning agents FeCl ₃ , lime, PAM to the conditioning tank in the deep dewatering system. FeCl ₃ and lime can change the binding force between particles and water in the sludge and improve the dewatering performance of the sludge; PAM can pass through the electricity. And, adsorption bridging effect, so that suspended particles flocculation.

(2) The surface of the activated coke in the activated coke adsorption pool is rich in functional groups such as hydroxyl and carbonyl, which can adsorb refractory organic matter and nitrogen and phosphorus pollutants in water through van der Waals force, electrostatic interaction, complexation reaction, etc. After treatment, the chromaticity of the press filtrate is reduced, the refractory COD becomes easily degradable COD, and the biodegradability of the press filtrate is improved.

(3) The organic phosphorus in the filtrate is converted into inorganic phosphorus by aeration, and a certain amount of polyaluminum chloride (PAC) is added for chemical phosphorus removal; the mixed solution finally enters the sedimentation tank for precipitation and stratification, and the formed precipitation is concentrated Treatment is used for resource recovery, and the effluent is transported to the next level of treatment.

(4) The effluent after phosphorus removal passes through the two-stage reverse osmosis device in turn, which can remove impurities in the water, such as ions, organics, bacteria, viruses, etc., and the concentrated water generated enters the collection device, which contains a higher concentration of COD. After anaerobic fermentation, its products can produce methane as a resource gas or as a supplementary carbon source for sewage treatment plants; the produced effluent can be used as cleaning water for itself and the plate and frame filter press.

(5) The utility model integrates the sludge treatment system, integrates the sludge deep dewatering system, the cleaning system and the resource recovery system, and is suitable for sewage treatment plants, river courses and artificial water bodies with low sludge output. As a necessary supplement to the sludge treatment and disposal facilities of the sewage treatment plant, the above-mentioned device can be transported by a carrier device including a flatbed truck, a semi-trailer, a trailer, or a truck, so as to facilitate small sludge volume, emergency sludge treatment, etc. Under certain circumstances, the treated press filtrate can reach the B-level standard of "Water Quality Standard for Sewage Discharged into Urban Sewers" (CJ343-2010); in addition, the utility model pays attention to the recovery of phosphorus, which reflects the concept of resource reuse.

Description of drawings

1 is a schematic structural diagram of an embodiment of the present utility model; wherein, 1, conditioning tank; 2, plate and frame filter press; 4, pH adjustment tank; 5, activated coke adsorption tank; 6, aeration tank; 7, Coagulation tank; 8, sedimentation tank; 9, primary reverse osmosis device; 10, secondary reverse osmosis device; 13, No. 1 chemical storage tank; 26, No. 3 chemical storage tank; 29, transport vehicle.

Fig. 2 is the process flow diagram of the device provided by the utility model; wherein 1, conditioning tank; 2, plate and frame filter press; 3, sludge collection device; 4, pH adjustment tank; 5, activated coke adsorption tank; 6, Aeration tank; 7, coagulation tank; 8, sedimentation tank; 9, primary reverse osmosis device; 10, secondary reverse osmosis device; 11, phosphorus-containing sedimentation collection device; 12, concentrated water collection device; 13, No. 1 Medicine storage tank; 14, medicine delivery control box; 15, agitator; 16, screw pump; 17, delivery pump; 18, agitator; 19, No. 2 medicine storage tank; 20, delivery pump; 21, activated coke filler; 22, stone supporting layer; 23, delivery pump; 24, aeration system; 25, agitator; 26, No. 3 pharmaceutical storage tank; 27, delivery pump; 28, delivery pump.

Detailed ways

In order to make the present utility model achieve the above-mentioned objects, features and advantages and make it more obvious and easy to understand, the present utility model will be described in further detail below with reference to the specific embodiments.

Example 1

As shown in Figure 2, the device of the present invention includes the device including a sludge deep dewatering system, a cleaning system, a resource recovery system and a transportation device, and the sludge dewatering system includes a conditioning tank 1, a plate and frame filter press 2, pH adjustment tank 4, activated coke adsorption tank 5, aeration tank 6, coagulation tank 7, sedimentation tank 8, primary reverse osmosis device 9, secondary reverse osmosis device 10; the resource recovery system includes a sludge collection device 3 , a phosphorus precipitation collection device 11 and a concentrated water collection device 12; the transportation device is a transportation vehicle 29 (see Figure 1). Specifically, conditioning tank 1, plate and frame filter press 2, pH adjustment tank 4, activated coke adsorption tank 5, aeration tank 6, coagulation tank 7, sedimentation tank 8, primary reverse osmosis device 9, secondary reverse osmosis The device 10 is connected by pipelines and/or pumps in sequence: the conditioning tank 1 is provided with a stirrer 15 inside, and the externally equipped No. 1 pharmaceutical storage tank 13 controls the dosage of the pharmaceutical through the pharmaceutical delivery control box 14 for conditioning the sludge. , the mud discharge end is connected with the plate and frame filter press 2 through the screw pump 16, the plate and frame filter press 2 is connected to the external sludge collection device 3, the water outlet pipe is connected with the pH adjustment tank 4 through the conveying pump 17, and the pH adjustment tank 4 is provided with The stirrer 18 is equipped with a No. 2 pharmaceutical storage tank 19 on the outside for adjusting pH. The water outlet pipe is connected to the activated coke adsorption tank 5 through a transfer pump 20. The activated coke adsorption tank 5 has a built-in activated coke filler 21 and a stone support layer 22. The water outlet pipe is connected with the aeration tank 6 through the conveying pump 23. The aeration system 24 is provided at the bottom of the aeration tank 6, and the mixed liquid flows into the coagulation tank 7 to be mixed with the chemical. The outside of the coagulation tank 7 is equipped with a No. 3 chemical storage tank 26. The built-in agitator 25, the upper layer mixed liquid flows into the sedimentation tank 8 for precipitation, the effluent enters the primary reverse osmosis device 9 through the transfer pump 27, and the phosphorus-containing precipitation collection device 11 is externally connected to the bottom to collect the sediment for phosphorus resource recovery. The primary reverse osmosis The effluent of the device 9 flows into the secondary reverse osmosis device 10, the concentrated water formed by the primary reverse osmosis device 9 and the secondary reverse osmosis device 10 flows into the external concentrated water collection device 12, and part of the effluent of the secondary reverse osmosis device 10 is directly discharged, A part enters the plate and frame filter press 2 through the transfer pump 28 for cleaning the plate and frame filter press 2 .

The operation process of the device of the utility model is as follows: the No. 1 pharmaceutical storage tank 13 is filled with FeCl ₃ solution, PAM solution and lime, and the pharmaceutical is controlled to enter the conditioning tank 1 through the pharmaceutical delivery control box 14 on the conveying pipe; after the sludge enters the conditioning tank 1 Under the action of the agitator 15, it is fully mixed with the agent; the sludge conditioned by the agent enters from the feed port of the plate and frame filter press 2 through the screw pump 16, and the sludge after the plate and frame press enters the sludge collection device 3 For incineration, the filtrate produced by the plate and frame filter press 2 press filtration enters the pH adjustment tank 4 through the delivery pump 17; the hydrochloric acid solution in the No. 2 pharmaceutical storage tank 19 is controlled by the valve into the pH adjustment tank 4, and the mixer The medicament and the press filtrate are mixed evenly; the pH-adjusted press filtrate enters from the bottom of the active coke adsorption tank 5 through the transfer pump 20, and the effluent after being adsorbed by the built-in active coke filler 21 (the stone support layer 22 plays a role in supporting the active coke filler 21). function), enter the aeration tank 6 through the delivery pump 23; after the aeration system 24 at the bottom of the aeration tank 6 is opened, the pressure filtrate and the sludge are mixed evenly, and the effluent flows into the coagulation tank 7; the No. 3 pharmaceutical storage tank is controlled by a valve The polyaluminum chloride (PAC) in 26 enters the coagulation tank 7, and the agitator 25 is used to mix the medicament and the pressure filtrate evenly, and the upper layer mixed liquid flows into the sedimentation tank 8 for precipitation; the supernatant enters the first-stage reverse osmosis through the transfer pump 27 In device 9, the formed precipitate can enter the phosphorus-containing sediment collection device 11 for recovery, and realize the purpose of resource utilization simultaneously; the effluent filtered by the primary reverse osmosis device 9 flows into the secondary reverse osmosis device 10, and the primary reverse osmosis device 9 The concentrated water formed with the secondary reverse osmosis device 10 flows into the external concentrated water collection device 12. Due to the high concentration of COD in the concentrated water, the product of anaerobic fermentation can produce methane as a resource gas or as a supplementary carbon source for the sewage treatment plant. Etc.; part of the effluent of the secondary reverse osmosis device 10 is directly discharged, and a part enters the plate and frame filter press 2 through the transfer pump 28 to clean the plate and frame filter press 2 and realize recycling.

Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Anyone who is familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present invention should be defined by the claims.

Claims (10)

1. A movable integrated device for filter-pressing, dewatering and cleaning of a sludge plate frame is characterized by comprising a sludge deep dewatering system, a cleaning system, a resource recovery system and a transportation device,

the sludge deep dehydration system comprises a conditioning tank (1), a plate-and-frame filter press (2), a pH adjusting tank (4), an active coke adsorption tank (5), an aeration tank (6), a coagulation tank (7), a sedimentation tank (8), a primary reverse osmosis device (9) and a secondary reverse osmosis device (10);

the resource recovery system comprises a sludge collection device (3), a phosphorus precipitation collection device (11) and a concentrated water collection device (12);

the transportation device is a transportation vehicle (29);

specifically, the sludge outlet end of a conditioning tank (1) is connected with a plate-and-frame filter press (2) through a screw pump (16), the plate-and-frame filter press (2) is externally connected with a sludge collection device (3), the water outlet pipe of the plate-and-frame filter press (2) is connected with a pH adjusting tank (4), the water outlet pipe of the pH adjusting tank (4) is connected with an active coke adsorption tank (5), the water outlet pipe at the upper part of the active coke adsorption tank (5) is connected with an aeration tank (6) through a delivery pump (23), the aeration tank (6), a coagulation tank (7) and a sedimentation tank (8) are sequentially separated by a baffle plate, a phosphorus precipitation collection device (11) is connected with the bottom of the sedimentation tank (8), the water outlet of the sedimentation tank (8) is connected with a primary reverse osmosis device (9), the primary reverse osmosis device (9) is connected with a secondary reverse osmosis device (10), the primary reverse osmosis device (9) and the secondary, one of the water outlets of the secondary reverse osmosis device (10) is connected with the outside, and the other water outlet is connected with the plate-and-frame filter press (2).

2. The movable integrated filter-pressing, dewatering and cleaning device for sludge plates and frames as claimed in claim 1, wherein the conditioning tank (1) is internally provided with a stirrer (15) and externally provided with a No. 1 medicament storage tank (13).

3. The movable integrated filter-pressing, dewatering and cleaning device for the sludge plate and frame according to claim 2, wherein the No. 1 medicament storage tank (13) is connected with the conditioning tank (1) through a medicament conveying control box (14).

4. The integrated filter-press dewatering and cleaning device for the movable sludge plate frame according to claim 1, wherein the activated coke adsorption tank (5) is internally provided with activated coke fillers (21) and a stone supporting layer (22), and the stone supporting layer (22) is positioned at the bottom layer.

5. The integrated device for filter-pressing, dewatering and cleaning of the movable sludge plate frame according to claim 1, characterized in that a No. 2 medicament storage tank (19) is arranged outside the pH adjusting tank (4) for adjusting pH.

6. The integrated filter-press dewatering and cleaning device for the movable sludge plate and frame according to claim 1, wherein the height of the baffle is such that the mixed liquor can pass through the aeration tank (6), the coagulation tank (7) and the sedimentation tank (8) in sequence by gravity.

7. The integrated device for filter-press dewatering and cleaning of mobile sludge plate and frame according to claim 1, characterized in that an aeration system (24) is arranged at the bottom of the aeration tank (6).

8. The integrated device for filter-pressing, dewatering and cleaning of mobile sludge plate and frame according to claim 1, characterized in that a No. 3 medicament storage tank (26) is arranged outside the coagulation tank (7) and a stirrer (25) is arranged inside.

9. The movable integrated filter-press dewatering and cleaning device for sludge with plate and frame filter-press according to claim 1, wherein the secondary reverse osmosis device (10) is connected with the plate and frame filter-press (2) for cleaning the plate and frame filter-press (2).

10. The movable integrated filter-pressing, dewatering and cleaning device for sludge plates and frames as claimed in claim 1, wherein the bottom of the sedimentation tank (8) is externally connected with a phosphorus-containing sediment collecting device (11) for collecting sediment for phosphorus resource recovery.

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