CN216584625U

CN216584625U - Phosphoric acid method active carbon production effluent disposal system

Info

Publication number: CN216584625U
Application number: CN202122460166.XU
Authority: CN
Inventors: 叶舟; 董菲菲; 李金页; 曾淼
Original assignee: Shangyi Environmental Protection Technology Hangzhou Co ltd
Current assignee: Shangyi Environmental Protection Technology Hangzhou Co ltd
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-05-24
Anticipated expiration: 2031-10-13

Abstract

The utility model discloses a phosphoric acid method activated carbon production wastewater treatment system which comprises a grid well, a cleaning and regulating tank, a first coagulating sedimentation tank, a distribution tank, a grid oil separation tank, a spraying and regulating tank, an oxidation reaction tank, a second coagulating sedimentation tank, an intermediate water tank, a UASB system, a water distribution tank, an A/O system, an MBR system, an AOP system, an external discharge tank, a biochemical sludge tank, a physicochemical sludge tank, a sludge dewatering system and a tail gas processor which are sequentially communicated according to the wastewater treatment direction. After pretreatment of the carbon flushing wastewater by the cleaning adjusting tank and the first coagulating sedimentation tank, part of the carbon flushing wastewater is recycled to the spraying production line, and the other part of the carbon flushing wastewater is recycled to the biochemical system. The spraying adjusting tank, the oxidation reaction tank and the second coagulating sedimentation tank pretreat the spraying wastewater and then enter a subsequent biochemical system. The UASB system is used for improving the biochemical property of the spraying wastewater and is beneficial to the treatment efficiency of the subsequent process. A/O, MBR, AOP systems are used to reduce wastewater pollutants. The utility model not only enables the wastewater to stably reach the standard, but also recycles part of the wastewater to the production line, thereby improving the utilization rate of the water.

Description

Phosphoric acid method active carbon production effluent disposal system

Technical Field

The utility model relates to an active carbon production wastewater treatment system, in particular to a phosphoric acid method active carbon production wastewater treatment system.

Background

1 ton of activated carbon produced by the phosphoric acid method can generate a large amount of wastewater, and the wastewater contains a large amount of phosphorus elements, acid, organic matters and the like, and is discharged into a water body to cause great harm to the water environment; the method mainly comprises carbon flushing wastewater and spraying wastewater, and the treatment mode of mixing two kinds of wastewater mainly comprises physicochemical methods such as primary sedimentation, filtration, flocculation and the like, but the effluent water treated by the existing sewage treatment process cannot reach the emission standard of industrial pollutants for activated carbon (a proposal for comments), so the prior art has the problem of poor sewage treatment effect.

Disclosure of Invention

The utility model aims to provide a phosphoric acid method activated carbon production wastewater treatment system which has the characteristic of greatly improving the effluent quality of wastewater.

The technical purpose of the utility model is realized by the following technical scheme: the utility model provides a phosphoric acid method active carbon waste water processing system, includes the grid well, washs the equalizing basin, and first coagulating sedimentation pond, distribution tank, grid oil interceptor, sprays the equalizing basin, and oxidation reaction tank, second coagulating sedimentation pond, middle pond, UASB system, distribution tank, the A/O system, the MBR system, the AOP system is arranged the pond outward, biochemical sludge impoundment, materialization sludge impoundment, sludge dewatering system, tail gas treater communicate according to the waste water treatment direction in proper order.

The cleaning and adjusting tank and the first coagulating sedimentation tank pretreat the carbon flushing wastewater, and part of the effluent is recycled to the spraying production line and part of the effluent is recycled to the biochemical process system. The spraying adjusting tank, the oxidation reaction tank and the second coagulating sedimentation tank are used for pretreating the spraying wastewater, and the effluent enters a subsequent biochemical process system. The UASB system is used for improving the biochemical property of the spraying wastewater and is beneficial to the treatment efficiency of a subsequent biochemical process system; the A/O system, the MBR system and the AOP system are all used for reducing pollutants in the wastewater.

By adopting the structure, the carbon flushing wastewater sequentially passes through the grid well and the cleaning and regulating tank through pipeline connection, so that oil stains in the wastewater are removed and the water quality and water quantity are regulated; the effluent water is pumped to a first coagulation sedimentation tank to mainly remove the total phosphorus in the wastewater, the effluent water enters a distribution tank, one part of the effluent water is recycled to a spraying production line, the water resource is saved, the utilization rate of the water is improved, and the other part of the effluent water is sent to a biochemical process system for retreatment; the sprayed wastewater passes through a grid oil separation tank and a spraying adjusting tank, oil stains in the wastewater are removed, the water quality and the water quantity are adjusted, and the effluent is delivered to an oxidation reaction tank and a second coagulation sedimentation tank to reduce the concentration of total phosphorus and partial organic matters in the wastewater; the effluent enters a UASB system to degrade COD in the wastewater and improve the biodegradability of the wastewater, so as to prepare for a subsequent biochemical treatment system; after pretreatment, the carbon flushing wastewater and the spraying wastewater sequentially enter an A/O system, an MBR system and an AOP system, organic matters, ammonia nitrogen and chromaticity in the wastewater are degraded, and the obtained purified water is discharged through an external discharge tank and a nano pipe. The utility model not only enables the wastewater to be stably discharged up to the standard, but also recycles part of the wastewater to the production line, improves the utilization rate of water, reduces the treatment cost of the wastewater produced by the activated carbon, and has obvious economic benefit and environmental benefit.

The method is further optimized as follows: the first coagulating sedimentation tank is provided with four reaction areas which are used for adjusting pH, removing phosphorus, assisting coagulation and flocculating respectively, and is realized by adding proper medicaments.

By adopting the structure, the concentration of total phosphorus and suspended matters in the carbon flushing wastewater is removed.

The method is further optimized as follows: the second coagulating sedimentation is provided with four reaction areas which respectively have the functions of increasing the oxidation property of the wastewater, adjusting the pH value, assisting coagulation and flocculation and are realized by adding a proper reagent; the sedimentation zone can adopt a vertical flow sedimentation structure, the spraying adjusting tank is provided with a perforated aeration pipe, and the oxidation reaction tank is additionally provided with a concrete bracket for placing iron-carbon combined filler.

By adopting the structure, the concentration of total phosphorus and organic matters in the spraying wastewater can be effectively reduced.

The method is further optimized as follows: the A/O system and the MBR system are arranged in parallel and used in parallel, and the A/O system is additionally provided with combined fillers.

By adopting the structure, the two wastewater after pretreatment enter the A/O system to mainly degrade COD concentration in the wastewater.

The method is further optimized as follows: the MBR system sets up the suspension type membrane group, and the MBR bottom sets up the aeration dish, and every group membrane group sets up a product water pump and is used for going out water.

By adopting the structure, the microorganism concentration can be improved, and a certain interception effect is realized on colloid and macromolecules, so that the removal rate of the refractory organic matters is improved.

The method is further optimized as follows: the AOP system is cylindrical, using stainless steel 304, with a catalyst layer for placement of the catalyst.

By adopting the structure, the chroma and ammonia nitrogen in the wastewater are reduced, and the wastewater can be disinfected without secondary pollution.

To sum up, the beneficial effect of this patent is: a phosphoric acid method activated carbon production wastewater treatment system adopts a physicochemical-biochemical-advanced treatment combined process to remove pollutants such as organic matters, total phosphorus and the like. The combined process has the total removal rate of over 99 percent of total phosphorus, over 95 percent of total removal rate of COD, over 85 percent of removal rate of suspended matters, stable effluent quality, capability of recycling reclaimed water and saving water consumption, and can provide reference significance for the treatment of similar wastewater in the future.

Drawings

FIG. 1 is a schematic structural diagram of a wastewater treatment process in the production of activated carbon by a phosphoric acid method.

In the drawings are labeled: 1-grid well, 2-cleaning adjusting tank, 3-first coagulating sedimentation tank, 4-distribution tank, 5-grid oil separation tank, 6-spraying adjusting tank, 7-oxidation reaction tank, 8-second coagulating sedimentation tank, 9-intermediate water tank, 10-UASB system, 11-distribution water tank, 12-A/O system, 13-MBR system, 14-AOP system, 15-discharge tank, 16-biochemical sludge tank, 17-materialized sludge tank, 18-sludge dewatering system, 19-tail gas treater, 20-perforated aerator pipe, 21-iron-carbon combined filler, 22-combined filler, 23-suspended membrane group, 24-aerator disc, 25-water producing pump and 26-catalyst.

Detailed Description

The utility model is further described below with reference to the figures and examples.

Example (b): a phosphoric acid method activated carbon production wastewater treatment system is shown in figure 1 and comprises a grid well 1, a cleaning and adjusting tank 2, a first coagulation sedimentation tank 3, a distribution tank 4, a grid oil separation tank 5, a spraying and adjusting tank 6, an oxidation reaction tank 7, a second coagulation sedimentation tank 8, an intermediate water tank 9, a UASB system 10, a distribution water tank 11, an A/O system 12, an MBR system 13, an AOP system 14, an external discharge tank 15, a biochemical sludge tank 16, a materialized sludge tank 17, a sludge dewatering system 18, a tail gas processor 19, a perforated aeration pipe 20, an iron-carbon combined filler 21, a combined filler 22, a suspended membrane group 23, an aeration disc 24, a water production pump 25 and a catalyst 26.

According to the water treatment direction, the carbon flushing wastewater sequentially passes through a grid well 1 and a cleaning and regulating tank 2 through pipeline connection; then pumping to a first coagulation sedimentation tank 3, and enabling the upper effluent to enter a distribution tank 4; and a part of the water discharged from the distribution tank 4 is recycled to the spraying production line, and a part of the water is discharged to the biochemical process system, and the first coagulating sedimentation tank is used for removing total phosphorus and SS in the wastewater. The spraying wastewater sequentially passes through a grid oil separation tank 5 and a spraying adjusting tank 6 through pipeline connection; then pumping the effluent to an oxidation reaction tank 7, and enabling the effluent to automatically flow to a second coagulation sedimentation tank 8 and an intermediate water tank 9 through water passing holes; the intermediate water tank 9 is pumped to a tank UASB system 10, and a water outlet pipeline is connected with a subsequent biochemical process system which automatically flows; the oxidation reaction tank 7 and the second coagulation sedimentation tank are used for reducing the concentration of total phosphorus and partial organic matters in the wastewater, and the UASB system 10 is used for degrading COD in the wastewater and improving the biodegradability of the wastewater so as to prepare for a subsequent biochemical treatment system; mixing pretreated effluent of carbon flushing wastewater and spraying wastewater in a distribution tank 4, and then sequentially passing through an A/O system 12, an MBR system 13 and an AOP system 14, wherein the A/O system 12 is used for degrading COD concentration in the wastewater, and the MBR system 13 is used for improving the removal rate of refractory organic matters; the AOP system 14 is used for reducing the chroma and ammonia nitrogen in the wastewater, and can also disinfect the wastewater without generating secondary pollution; and the outward discharging tank 15 is used for discharging the treated purified water.

The first coagulating sedimentation tank 3 is provided with four reaction areas, NaOH and CaCl are respectively added_2、PAC, PAM; the sedimentation area adopts a vertical flow sedimentation structure; the flushing adjusting tank and the distribution tank are provided with perforated aeration pipes 20, and the openings of the perforated pipes are phi 6 mm.

The second coagulating sedimentation 8 is provided with four reaction areas, and H is respectively added₂O₂、NaOH_、PAC, PAM; the sedimentation area adopts a vertical flow sedimentation structure; the spraying adjusting tank is provided with a perforated aeration pipe 20, and the opening diameter of the perforated pipe is 6 mm; the oxidation reaction tank 7 is additionally provided with a concrete bracket for placing iron-carbon combined filler 21.

The UASB system 10 is provided with two sets, and is made of carbon steel anticorrosive material with the diameter of 4 multiplied by 14 m.

The A/O system 12 and the MBR system 13 are arranged in parallel and used in parallel, and a combined filler 22 is additionally arranged in the A tank and the O tank.

The MBR system 13 adopts a hollow fiber membrane 23, 6 groups of suspended membrane groups are arranged, an aeration disc 24 is arranged at the bottom of the MBR, and a water producing pump 25 is arranged in each group.

The AOP system 14 described above is cylindrically configured with two units, used in parallel, using stainless steel 304, phi 4X 8.0m, and disposed with the catalyst 26.

Claims

1. The utility model provides a phosphoric acid method active carbon waste water treatment system which characterized by: the device comprises a grid well (1), a cleaning adjusting tank (2), a first coagulating sedimentation tank (3), a distribution tank (4), a grid oil separation tank (5), a spraying adjusting tank (6), an oxidation reaction tank (7), a second coagulating sedimentation tank (8), an intermediate water tank (9), a UASB system (10), a water distribution tank (11), an A/O system (12), an MBR system (13), an AOP system (14), an outer discharge tank (15), a biochemical sludge tank (16), a physicochemical sludge tank (17), a sludge dewatering system (18) and a tail gas processor (19), which are sequentially communicated according to the wastewater treatment direction; the cleaning and adjusting tank (2) and the first coagulating sedimentation tank (3) pretreat the carbon flushing wastewater, part of the effluent is connected and recycled to the spraying production line through a pipeline, and part of the effluent is connected to a biochemical process system; the utility model discloses a sewage treatment system, including spraying equalizing basin (6), oxidation reaction tank (7) and second coagulating sedimentation pond (8) connect gradually and carry out the preliminary treatment to spraying waste water, go out water and get into subsequent facility through the pipe connection, UASB system (10), AO system (12), MBR system (13), AOP system (14) connect gradually and reduce the pollutant in the end waste water.

2. The system for treating wastewater generated in the production of activated carbon by a phosphoric acid method according to claim 1, wherein the first coagulation sedimentation tank (3) is provided with four reaction zones.

3. The system for treating wastewater produced by phosphoric acid method activated carbon according to claim 1, which is characterized in that: the spraying adjusting tank (6) is provided with a perforated aeration pipe (20).

4. The system for treating wastewater produced by phosphoric acid method activated carbon according to claim 1, which is characterized in that: the A/O system (12) is additionally provided with a combined filler (22).

5. The system for treating wastewater generated in the production of activated carbon by a phosphoric acid method according to claim 1, wherein the MBR system (13) is provided with a suspended membrane group (23), the bottom of the MBR is provided with an aeration disc (24), and each membrane group is provided with a water generating pump (25).

6. The system for treating wastewater generated in activated carbon production by phosphoric acid method as claimed in claim 1, wherein the AOP system (14) is cylindrical, and is made of stainless steel 304, and the catalyst (26) is arranged.