CN212713182U - Multistage combined type chemical industry high difficulty waste water zero release processing system - Google Patents
Multistage combined type chemical industry high difficulty waste water zero release processing system Download PDFInfo
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- CN212713182U CN212713182U CN202022027703.7U CN202022027703U CN212713182U CN 212713182 U CN212713182 U CN 212713182U CN 202022027703 U CN202022027703 U CN 202022027703U CN 212713182 U CN212713182 U CN 212713182U
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Abstract
The utility model discloses a multistage combined type chemical industry high difficulty waste water zero release processing system, waste water in the pond promotes advanced catalytic oxidation system through the sewage elevator pump in, with the difficult degradation organic matter oxidation of part macromolecule to the easy degradation organic matter behind the catalytic oxidation reaction, carry out coagulating sedimentation through the callback pH and with the flocculating agent, it together flows to biochemical regulating reservoir with factory area domestic sewage to go out the water, later promote to UASB anaerobic tower by the anaerobism intake pump, get rid of partly organic matter through anaerobic microbial treatment, later get into AO biochemical system, through the oxygen deficiency, the surplus most organic matter of aerobic microbial degradation, it further gets rid of the difficult degradation organic matter of part microorganism to enter into the fragrant oxidation system through the sediment, it continues retrieval and utilization production chemical industry system to handle the back product water through ultrafiltration system and reverse osmosis system at last. The utility model has the advantages of simple structure and reasonable design and low cost, can realize chemical industry advanced waste treatment and zero release.
Description
Technical Field
The utility model belongs to the technical field of chemical industry effluent disposal system, concretely relates to multistage combined type chemical industry high difficult waste water zero release processing system.
Background
In recent years, with the rapid development of chemical industry in China, a large amount of organic pollutants enter water bodies through various ways, and a part of the organic pollutants are difficult to biodegrade and remove, so that the organic pollutants pose serious threats to both human beings and the environment. The wastewater discharged by coal chemical enterprises is generated in the coal processing process and comprises gasification wastewater, liquefied wastewater and coking wastewater, and the high-concentration coal gas washing wastewater is mainly used. The wastewater has complex water quality and contains a large amount of phenols, polycyclic aromatic compounds, heterocyclic compounds, cyanogen, oil, ammonia nitrogen and other toxic and harmful substances.
With the gradual improvement of the national environmental protection law, the effluent quality of the secondary biochemical treatment process in the conventional coal chemical industry treatment process cannot meet the national standard, wherein COD is generally 150-200mg/L, the total phenol concentration is 80-120mg/L, and ammonia nitrogen is 35-50mg/L, and the discharge requirement can be met only by deep treatment.
Disclosure of Invention
The utility model provides a technical problem provide a simple structure, reasonable in design and low cost's multistage combined type chemical industry high difficult waste water zero release processing system.
The utility model adopts the following technical scheme for solving the technical problem, a multistage combined type chemical industry high difficulty waste water zero release processing system, its characterized in that includes pretreatment systems, biochemical treatment system, fenton oxidation system, reuse of reclaimed water system and sludge treatment system, among the pretreatment systems the catch basin passes through the sewage pipeline and communicates with senior catalytic oxidation reactor and oxidation reaction tank in proper order, and the oxidation reaction tank communicates with medicine mixing tank I and neutralization sedimentation tank overflow in proper order, and the oxidation reaction tank bottom is equipped with aeration pipe I, and acidizing fluid storage tank I, hydrogen peroxide solution storage tank I and ferrous sulfate solution storage tank I communicate with senior catalytic oxidation reactor through adding the medicine pipeline respectively, and sodium hydroxide solution storage tank I and polyacrylamide solution storage tank I communicate with medicine mixing tank I through adding the medicine pipeline respectively; a biochemical regulating tank in the biochemical treatment system is communicated with a neutralization sedimentation tank through a sewage pipeline, the biochemical regulating tank is sequentially communicated with an anaerobic tower, an anoxic tank, a contact oxidation tank and a secondary sedimentation tank through the sewage pipeline, a nutrient salt solution storage tank is communicated with the biochemical regulating tank through a dosing pipeline, and a microporous aerator is arranged at the bottom of the contact oxidation tank; a Fenton catalytic reaction tank in the Fenton oxidation system is communicated with a secondary sedimentation tank through a sewage pipeline, the Fenton catalytic reaction tank is sequentially communicated with a dosing mixing tank II, a final sedimentation tank and a middle water tank in an overflowing manner, an acid liquid storage tank II, a hydrogen peroxide solution storage tank II and a ferrous sulfate solution storage tank II are respectively communicated with the Fenton catalytic reaction tank through dosing pipelines, a sodium hydroxide solution storage tank II and a polyacrylamide solution storage tank II are respectively communicated with the dosing mixing tank II through dosing pipelines, and an aeration pipe II is arranged at the bottom of the Fenton catalytic reaction tank; the quartz sand filter in the reclaimed water recycling system is communicated with the intermediate water tank through a sewage pipeline, the quartz sand filter is sequentially communicated with the activated carbon filter, the ultrafiltration system, the water production tank I, the reverse osmosis system and the water production tank II through the sewage pipeline, and the outlet water of the water production tank II is conveyed to a workshop through a recycling water pump for recycling production; the aeration pipe I at the bottom of the oxidation reaction tank, the micro-motion aerator at the bottom of the contact oxidation tank and the aeration pipe II at the bottom of the Fenton catalytic reaction tank are respectively connected with the Roots blower through air pipelines; sludge concentration jar among the sludge treatment system is through mud pipeline and neutralization sedimentation tank, two heavy ponds and final sedimentation tank bottom mud export intercommunication respectively, and this sludge concentration jar passes through mud pipeline and polyacrylamide solution storage tank III and passes through medicine pipeline and plate and frame sludge dewaterer mud access connection.
Further limiting, an ultrasonic liquid level meter and an online pH meter are arranged in the water collecting tank, and the water collecting tank is connected with a water inlet at the upper part of the advanced catalytic oxidation reactor through a sewage pipeline and a sewage lifting pump; the upper water outlet of the advanced catalytic oxidation reactor is connected with the water inlet at the bottom of the oxidation reaction tank through a sewage pipeline, the bottom of the oxidation reaction tank is provided with an aeration pipe I, an acid liquid storage tank I, a hydrogen peroxide solution storage tank I and a ferrous sulfate solution storage tank I are respectively connected with the advanced catalytic oxidation reactor through a dosing pipeline and a metering pump, and a medicine dissolving stirrer is arranged in the ferrous sulfate solution storage tank I; the device comprises a sodium hydroxide solution storage tank I and a polyacrylamide solution storage tank I, wherein the sodium hydroxide solution storage tank I and the polyacrylamide solution storage tank I are respectively connected with a dosing mixing tank I through dosing pipelines and metering pumps, a medicine dissolving stirrer is respectively arranged in the sodium hydroxide solution storage tank I and the polyacrylamide solution storage tank I, a mixing stirrer is arranged in the dosing mixing tank I, an online pH meter and a central guide cylinder are arranged in a neutralization sedimentation tank, and a sludge outlet at the bottom of the neutralization sedimentation tank is connected with a sludge concentration tank through a sludge pipeline and a sludge pump.
The system is further limited, the nutrient solution storage tank is connected with a biochemical regulating tank through a dosing pipeline and a metering pump, a medicine dissolving stirrer is arranged in the nutrient solution storage tank, an upper water inlet of the biochemical regulating tank is connected with an upper water outlet of the neutralization sedimentation tank through a sewage pipeline, a lower water outlet of the biochemical regulating tank is connected with a bottom water inlet of the anaerobic tower through a sewage pipeline and an anaerobic water inlet pump, and a submersible stirrer and a floating ball liquid level meter are arranged in the biochemical regulating tank; a water distribution system and a three-phase separator are arranged in the anaerobic tower, and a water outlet at the upper part of the anaerobic tower is connected with a water inlet at the bottom of the anoxic tank through a sewage pipeline; the upper water outlet of the anoxic tank is connected with the bottom water inlet of the contact oxidation tank through a sewage pipeline, combined fillers are arranged in the anoxic tank and the contact oxidation tank, a microporous aerator is arranged at the bottom of the contact oxidation tank, and a portable dissolved oxygen instrument is arranged in the contact oxidation tank; the liquid inlet at the bottom of the secondary sedimentation tank is connected with the liquid outlet at the upper part of the contact oxidation tank through a sewage pipeline, the inclined tube packing is arranged in the secondary sedimentation tank, and the sludge outlet at the bottom of the secondary sedimentation tank is connected with a sludge concentration tank through a sludge pipeline and a sludge pump.
Further inject, the water inlet bottom the fenton catalytic reaction pond is connected with two heavy pond upper portion delivery ports through sewage line, be equipped with online pH meter in the fenton catalytic reaction pond, the fenton catalytic reaction pond bottom is equipped with aeration pipe II, acidizing fluid storage tank II, hydrogen peroxide solution storage tank II and ferrous sulfate solution storage tank II are connected with the fenton catalytic reaction pond through adding medicine pipeline and measuring pump respectively, wherein be equipped with the medicine dissolving mixer in the ferrous sulfate solution storage tank II, two heavy ponds go out water and reach standard direct discharge or get into the fenton catalytic reaction pond.
Further inject, sodium hydroxide solution storage tank II and polyacrylamide solution storage tank II are connected with medicine mixing tank II through adding medicine pipeline and measuring pump respectively, are equipped with the medicine dissolving mixer respectively in this sodium hydroxide solution storage tank II and the polyacrylamide solution storage tank II, add and are equipped with mixed mixer in the medicine mixing tank II, are equipped with online pH meter and central draft tube in the final sedimentation tank, and the bottom sludge outlet of this final sedimentation tank passes through sludge pipeline and sludge pump and is connected with the sludge concentration jar.
Further inject, middle pond lower part delivery port passes through sewage line and elevator pump and is connected with quartzy sand filter water inlet, quartzy sand filter water outlet passes through sewage line and is connected with the active carbon filter water inlet, the active carbon filter water outlet passes through sewage line and security filter and intake pump and is connected with the ultrafiltration system water inlet, the ultrafiltration system delivery port passes through sewage line and is connected with water tank I upper portion water inlet, water tank I lower part delivery port passes through sewage line and security filter and intake pump and is connected with reverse osmosis system water inlet, the reverse osmosis system delivery port passes through sewage line and is connected with water tank II upper portion water inlet, water tank II lower part delivery port passes through sewage line and reuse water pump and delivers to workshop retrieval and utilization production.
Further inject, sludge thickening jar passes through the mud pipeline and sludge screw pump and plate and frame sludge dewaterer's mud access connection, and polyacrylamide solution storage tank III is equipped with the medicine dissolving mixer in this polyacrylamide solution storage tank III through adding the mud access connection of medicine pipeline and measuring pump and plate and frame sludge dewaterer.
Compared with the prior art, the utility model following beneficial effect has:
(1) the utility model discloses a sewage treatment system can satisfy normal operating under 50% -110% load, guarantees that system operation is stable, safe and reliable, energy-conserving, continuous, long period operation.
(2) The utility model discloses a sewage treatment device selection type is ripe, reliable, advanced, simple structure, easy maintenance, and is anticorrosive, and the manufacturing material can satisfy the medium requirement.
(3) The sewage treatment control system adopts automatic program control, thereby reducing the labor intensity.
(4) The dosing device considers the concentrated arrangement of subsystems, a dosing room is independently arranged for the dosing device with irritation and corrosivity, and the volume of the medicament storage tank meets the standard requirement.
(5) The system is reasonable and beautiful in arrangement, convenient to operate and easy to maintain.
(6) The sewage treatment system is reasonably designed to exceed a pipeline, a backflow pipeline and communication pipelines among various series, so that the accident state device can be conveniently overhauled and split, and the culture and domestication of microorganisms are realized during starting.
(7) The sewage treatment system is provided with reasonable flow, temperature, pressure and instrument design.
(8) And the high-efficiency and energy-saving treatment process is adopted, so that the engineering operation cost is greatly reduced.
(9) Advanced process technology is adopted to reduce the sludge yield, and the final disposal of the sludge is considered.
(10) The deodorization and noise prevention measures are strengthened, and the secondary pollution is avoided.
(11) Reasonable layout and reduced influence of the processing stations on the surrounding environment.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a process flow diagram of the present invention.
In the figure: 1-a water collecting tank, 2-a high-grade catalytic oxidation reactor, 3-an oxidation reaction tank, 4-a neutralization sedimentation tank, 5-a biochemical regulating tank, 6-an anaerobic tower, 7-an anoxic tank, 8-a contact oxidation tank, 9-a secondary sedimentation tank, 10-a Fenton catalytic reaction tank, 11-a final sedimentation tank, 12-an intermediate water tank, 13-a quartz sand filter, 14-an activated carbon filter, 15-an ultrafiltration system, 16-a water production tank I, 17-a reverse osmosis system, 18-a water production tank II, 19-a sludge concentration tank, 20-a plate-and-frame type sludge dewatering machine, 21-a Roots blower, 22-an acid liquid storage tank I, 23-a hydrogen peroxide storage tank I, 24-a ferrous sulfate solution storage tank I, 25-a sodium hydroxide solution storage tank I, 26-a polyacrylamide solution storage tank I, 27-nutrient salt solution storage tank, 28-polyacrylamide solution storage tank II, 29-sodium hydroxide solution storage tank II, 30-ferrous sulfate solution storage tank II, 31-hydrogen peroxide solution storage tank II, 32-acid liquor storage tank II, 33-polyacrylamide solution storage tank III.
Detailed Description
The technical scheme of the utility model is described in detail with the attached drawing, a multistage combined type chemical industry high difficulty waste water zero release processing system, including pretreatment systems, biochemical treatment system, fenton oxidation system, reuse of reclaimed water system and sludge treatment system, pretreatment systems middle water catch basin 1 is through sewage line communicate with senior catalytic oxidation reactor 2 and oxidation reaction tank 3 in proper order, oxidation reaction tank 3 is in proper order with add medicine mixing tank I and the overflow of neutralization sedimentation tank 4 communicates, oxidation reaction tank 3 bottom is equipped with aeration pipe I, acidizing fluid storage tank I22, hydrogen peroxide solution storage tank I23 and ferrous sulfate solution storage tank I24 communicate with senior catalytic oxidation reactor 2 through adding the medicine pipeline respectively, sodium hydroxide solution storage tank I25 and polyacrylamide solution storage tank I26 communicate with adding medicine mixing tank I through adding the medicine pipeline respectively; a biochemical regulating tank 5 in the biochemical treatment system is communicated with a neutralization sedimentation tank 4 through a sewage pipeline, the biochemical regulating tank 5 is sequentially communicated with an anaerobic tower 6, an anoxic tank 7, a contact oxidation tank 8 and a secondary sedimentation tank 9 through the sewage pipeline, a nutrient salt solution storage tank 27 is communicated with the biochemical regulating tank 5 through a dosing pipeline, and the bottom of the contact oxidation tank 8 is provided with a microporous aerator; a Fenton catalytic reaction tank 10 in the Fenton oxidation system is communicated with a secondary sedimentation tank 9 through a sewage pipeline, the Fenton catalytic reaction tank 10 is sequentially communicated with a dosing mixing tank II, a final sedimentation tank 11 and a middle water tank 12 in an overflowing manner, an acid liquid storage tank II 32, a hydrogen peroxide solution storage tank II 31 and an iron sulfate solution storage tank II 30 are respectively communicated with the Fenton catalytic reaction tank 10 through dosing pipelines, a sodium hydroxide solution storage tank II 29 and a polyacrylamide solution storage tank II 28 are respectively communicated with the dosing mixing tank II through dosing pipelines, and an aeration pipe II is arranged at the bottom of the Fenton catalytic reaction tank 10; the quartz sand filter 13 in the reclaimed water recycling system is communicated with the intermediate water tank 12 through a sewage pipeline, the quartz sand filter 13 is sequentially communicated with the activated carbon filter 14, the ultrafiltration system 15, the water production tank I16, the reverse osmosis system 17 and the water production tank II 18 through the sewage pipeline, and the outlet water of the water production tank II 18 is conveyed to a workshop through a recycling water pump for recycling production; the aeration pipe I at the bottom of the oxidation reaction tank 3, the micro-motion aerator at the bottom of the contact oxidation tank 8 and the aeration pipe II at the bottom of the Fenton catalytic reaction tank 10 are respectively connected with a Roots blower 21 through air pipelines; sludge concentration tank 19 among the sludge treatment system is respectively through mud pipeline and neutralization sedimentation tank 4, two heavy pond 9 and the sludge outlet intercommunication in 11 bottoms of final sedimentation tank, and this sludge concentration tank 19 is connected with plate and frame sludge dewaterer mud import 20 through mud pipeline and polyacrylamide solution storage tank III through adding the medicine pipeline.
The utility model is characterized in that an ultrasonic liquid level meter and an online pH meter are arranged in a water collecting tank 1, and the water collecting tank 1 is connected with the upper water inlet of an advanced catalytic oxidation reactor 2 through a sewage pipeline and a sewage lifting pump; the upper water outlet of the advanced catalytic oxidation reactor 2 is connected with the bottom water inlet of the oxidation reaction tank 3 through a sewage pipeline, the bottom of the oxidation reaction tank 3 is provided with an aeration pipe I, an acid liquor storage tank I22, a hydrogen peroxide solution storage tank I23 and a ferrous sulfate solution storage tank I24 are respectively connected with the advanced catalytic oxidation reactor 2 through a dosing pipeline and a metering pump, and a medicine dissolving stirrer is arranged in the ferrous sulfate solution storage tank I24; the sodium hydroxide solution storage tank I25 and the polyacrylamide solution storage tank I26 are respectively connected with a dosing mixing tank I through dosing pipelines and metering pumps, the sodium hydroxide solution storage tank I25 and the polyacrylamide solution storage tank I26 are respectively internally provided with a drug dissolving stirrer, the dosing mixing tank I is internally provided with a mixing stirrer, the neutralization sedimentation tank 4 is internally provided with an online pH meter and a central guide cylinder, and the bottom sludge outlet of the neutralization sedimentation tank 4 is connected with the sludge concentration tank 19 through a sludge pipeline and a sludge pump.
The nutrient solution storage tank 27 of the utility model is connected with the biochemical regulating tank 5 through a dosing pipeline and a metering pump, a medicine dissolving stirrer is arranged in the nutrient solution storage tank 27, the upper water inlet of the biochemical regulating tank 5 is connected with the upper water outlet of the neutralization sedimentation tank 4 through a sewage pipeline, the lower water outlet of the biochemical regulating tank 5 is connected with the bottom water inlet of the anaerobic tower 6 through a sewage pipeline and an anaerobic water inlet pump, and a diving stirrer and a floating ball liquid level meter are arranged in the biochemical regulating tank 5; a water distribution system and a three-phase separator are arranged in the anaerobic tower 6, and a water outlet at the upper part of the anaerobic tower 6 is connected with a water inlet at the bottom of the anoxic tank 7 through a sewage pipeline; a water outlet at the upper part of the anoxic tank 7 is connected with a water inlet at the bottom of the contact oxidation tank 8 through a sewage pipeline, combined fillers are arranged in the anoxic tank 7 and the contact oxidation tank 8, a microporous aerator is arranged at the bottom of the contact oxidation tank 8, and a portable dissolved oxygen instrument is arranged in the contact oxidation tank 8; a liquid inlet at the bottom of the secondary sedimentation tank 9 is connected with a liquid outlet at the upper part of the contact oxidation tank 8 through a sewage pipeline, an inclined tube filler is arranged in the secondary sedimentation tank 9, and a sludge outlet at the bottom of the secondary sedimentation tank 9 is connected with a sludge concentration tank 19 through a sludge pipeline and a sludge pump.
The water inlet of fenton catalytic reaction pond 10 bottom is passed through the sewage line and is connected with the 9 upper portions delivery ports of two heavy ponds, be equipped with online pH meter in the fenton catalytic reaction pond 10, fenton catalytic reaction pond 10 bottom is equipped with aeration pipe II, acidizing fluid storage tank II 32, hydrogen peroxide solution storage tank II 31 and ferrous sulfate solution storage tank II 30 are connected with fenton catalytic reaction pond 10 through adding medicine pipeline and measuring pump respectively, wherein be equipped with in the ferrous sulfate solution storage tank II 30 and dissolve the medicine mixer, 9 play waters of two heavy ponds are up to standard and are directly discharged or get into fenton catalytic reaction pond 10.
Sodium hydroxide solution storage tank II 29 and polyacrylamide solution storage tank II 28 are connected with medicine mixing tank II through adding medicine pipeline and measuring pump respectively, are equipped with the medicine dissolving mixer in this sodium hydroxide solution storage tank II 29 and the polyacrylamide solution storage tank II 28 respectively, add the medicine and are equipped with mixed mixer in the mixing tank II, are equipped with online pH meter and central draft tube in the final sedimentation tank 11, and the bottom sludge outlet of this final sedimentation tank 11 passes through mud pipeline and sludge pump and is connected with sludge thickening tank 19.
The utility model discloses a design requirement:
(1) the design scheme strictly executes all regulations related to environmental protection, and ensures that all effluent quality indexes meet the requirements after sewage treatment.
(2) According to the change conditions of water quantity and water quality, the special conditions of the sewage are combined, and a simple, mature, advanced, stable, practical, economical and reasonable treatment process is adopted, so that the treatment effect is ensured, and the investment and the operation management cost are saved.
(3) The treatment system has certain flexibility and adjusting scope to adapt to the change of water quality and water quantity.
(4) The equipment model selection has the advantages of universality and advancement, stable and reliable operation, high efficiency, convenient management, less maintenance workload and moderate price.
(5) The system is flexible in operation, convenient to manage and simple to maintain, operation automation is fully considered, and operation labor intensity is reduced.
(6) By utilizing the elevation of the field, sewage mainly flows by gravity, and the power consumption is reduced.
(7) Necessary monitoring instruments are arranged, and the automation degree of control operation is improved.
(8) Measures are taken as far as possible to reduce the influence on the surrounding environment, the smell and the noise are reasonably controlled, and the building structure adopts a closed form as far as possible.
The utility model discloses a concrete operation process does: the chemical production wastewater automatically flows into a water collecting tank, is lifted into an advanced catalytic oxidation system by a sewage lifting pump, is oxidized into easily degradable organic matters by part of macromolecular difficultly degradable organic matters after catalytic oxidation reaction, is subjected to pH adjustment and coagulation sedimentation by adding a flocculating agent, the effluent and the domestic sewage of a plant area automatically flow to a biochemical regulating tank, is lifted to a UASB anaerobic tower by an anaerobic water inlet pump, is treated by anaerobic microorganisms to remove part of the organic matters, then enters an A/O biochemical system, is mainly subjected to anoxic and aerobic microorganisms to degrade most of the rest organic matters, is precipitated to enter a Fenton oxidation system to further remove part of the microorganism difficultly degradable organic matters, is treated by an ultrafiltration system and a reverse osmosis system to produce water, is continuously recycled to the chemical production system, is subjected to a concentrated water evaporation system, and is discharged to a sludge concentration tank to carry out sludge concentration, and (5) transporting the concentrated mud cakes outwards.
The utility model discloses a processing procedure is to the anticipated analysis of the index of getting rid of the pollutant:
the utility model discloses a main technological parameter:
1 pretreatment System
1.1 catch basin
The functions are as follows: the amount of wastewater varies due to production fluctuations. The comprehensive adjusting tank collects the production-related waste water, homogenizes the water quality and the water quantity, and promotes the waste water to enter the pretreatment system.
Designing parameters: q =10m3H; effective volume: 1200m3。
1.2 advanced catalytic Oxidation System
The functions are as follows: and decomposing the organic matter with high molecular weight and difficult degradation into small molecular weight organic matter through catalytic oxidation.
Designing parameters: q =10m3/h。
1.3 neutralizing and settling tank
The functions are as follows: adding flocculant and coagulating deposition.
Designing parameters: q =10m3/h。
2. Biochemical treatment system
After pretreatment, the production wastewater is collected with domestic wastewater, mixed and then enters a biochemical treatment system. The main decarbonization and denitrification are completed in a biochemical system.
2.1 Biochemical regulating reservoir
The functions are as follows: the biochemical regulating tank has the main function similar to that of the regulating tank, and is also used for regulating the water quality and the water quantity and ensuring the stability of biochemical influent water.
Designing parameters: q =200m3/d。
2.2UASB anaerobic reaction tank
Designing parameters: q =200m3/d。
2.3 anoxic Biochemical tanks
The nitrified liquid flows back to be mixed with the inlet water, and denitrification is carried out through denitrifying bacteria.
Designing parameters: q =200m3/d。
2.4 contact oxidation tank
Wastewater automatically flows into an aerobic biochemical tank
Designing parameters: q =200m3/d。
2.5 Secondary sedimentation tank
Designing parameters: q =200m3/d。
3 fenton oxidation system
The functions are as follows: the biologically refractory organic matter is further removed by fenton oxidation.
Designing parameters: q =10m3/h。
4 Final settling tank
Designing parameters: q =10m3/h。
5 reclaimed water recycling system
5.1 intermediate Water tank
The treated water is temporarily stored.
Designing parameters: q =200m3/d。
5.2 Quartz Sand/activated carbon Filter
Further removing suspended matters in the water.
Designing parameters: q =200m3/d。
5.3 Ultrafiltration System + reverse osmosis System
And further removing pollutants and ions in the water through an RO membrane.
Designing parameters: q =200m3/d。
The foregoing shows and describes the general principles of the present invention, with its principal features and advantages, and further, various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A multistage and multistage combined chemical high-difficulty wastewater zero-discharge treatment system is characterized by comprising a pretreatment system, a biochemical treatment system, a Fenton oxidation system, a reclaimed water reuse system and a sludge treatment system, wherein a water collecting tank in the pretreatment system is sequentially communicated with a high-grade catalytic oxidation reactor and an oxidation reaction tank through sewage pipelines, the oxidation reaction tank is sequentially communicated with a dosing mixing tank I and a neutralization sedimentation tank in an overflow manner, the bottom of the oxidation reaction tank is provided with an aerator pipe I, an acid liquid storage tank I, a hydrogen peroxide solution storage tank I and a ferrous sulfate solution storage tank I are respectively communicated with the high-grade catalytic oxidation reactor through dosing pipelines, and a sodium hydroxide solution storage tank I and a polyacrylamide solution storage tank I are respectively communicated with the dosing mixing tank I through dosing pipelines; a biochemical regulating tank in the biochemical treatment system is communicated with a neutralization sedimentation tank through a sewage pipeline, the biochemical regulating tank is sequentially communicated with an anaerobic tower, an anoxic tank, a contact oxidation tank and a secondary sedimentation tank through the sewage pipeline, a nutrient salt solution storage tank is communicated with the biochemical regulating tank through a dosing pipeline, and a microporous aerator is arranged at the bottom of the contact oxidation tank; a Fenton catalytic reaction tank in the Fenton oxidation system is communicated with a secondary sedimentation tank through a sewage pipeline, the Fenton catalytic reaction tank is sequentially communicated with a dosing mixing tank II, a final sedimentation tank and a middle water tank in an overflowing manner, an acid liquid storage tank II, a hydrogen peroxide solution storage tank II and a ferrous sulfate solution storage tank II are respectively communicated with the Fenton catalytic reaction tank through dosing pipelines, a sodium hydroxide solution storage tank II and a polyacrylamide solution storage tank II are respectively communicated with the dosing mixing tank II through dosing pipelines, and an aeration pipe II is arranged at the bottom of the Fenton catalytic reaction tank; the quartz sand filter in the reclaimed water recycling system is communicated with the intermediate water tank through a sewage pipeline, the quartz sand filter is sequentially communicated with the activated carbon filter, the ultrafiltration system, the water production tank I, the reverse osmosis system and the water production tank II through the sewage pipeline, and the outlet water of the water production tank II is conveyed to a workshop through a recycling water pump for recycling production; the aeration pipe I at the bottom of the oxidation reaction tank, the micro-motion aerator at the bottom of the contact oxidation tank and the aeration pipe II at the bottom of the Fenton catalytic reaction tank are respectively connected with the Roots blower through air pipelines; sludge concentration jar among the sludge treatment system is through mud pipeline and neutralization sedimentation tank, two heavy ponds and final sedimentation tank bottom mud export intercommunication respectively, and this sludge concentration jar passes through mud pipeline and polyacrylamide solution storage tank III and passes through medicine pipeline and plate and frame sludge dewaterer mud access connection.
2. The multi-stage multi-section combined type chemical high-difficulty wastewater zero-discharge treatment system according to claim 1, which is characterized in that: an ultrasonic liquid level meter and an online pH meter are arranged in the water collecting tank, and the water collecting tank is connected with a water inlet at the upper part of the advanced catalytic oxidation reactor through a sewage pipeline and a sewage lifting pump; the upper water outlet of the advanced catalytic oxidation reactor is connected with the water inlet at the bottom of the oxidation reaction tank through a sewage pipeline, the bottom of the oxidation reaction tank is provided with an aeration pipe I, an acid liquid storage tank I, a hydrogen peroxide solution storage tank I and a ferrous sulfate solution storage tank I are respectively connected with the advanced catalytic oxidation reactor through a dosing pipeline and a metering pump, and a medicine dissolving stirrer is arranged in the ferrous sulfate solution storage tank I; the device comprises a sodium hydroxide solution storage tank I and a polyacrylamide solution storage tank I, wherein the sodium hydroxide solution storage tank I and the polyacrylamide solution storage tank I are respectively connected with a dosing mixing tank I through dosing pipelines and metering pumps, a medicine dissolving stirrer is respectively arranged in the sodium hydroxide solution storage tank I and the polyacrylamide solution storage tank I, a mixing stirrer is arranged in the dosing mixing tank I, an online pH meter and a central guide cylinder are arranged in a neutralization sedimentation tank, and a sludge outlet at the bottom of the neutralization sedimentation tank is connected with a sludge concentration tank through a sludge pipeline and a sludge pump.
3. The multi-stage multi-section combined type chemical high-difficulty wastewater zero-discharge treatment system according to claim 1, which is characterized in that: the nutrient solution storage tank is connected with the biochemical regulating tank through a dosing pipeline and a metering pump, a dissolved medicine stirrer is arranged in the nutrient solution storage tank, an upper water inlet of the biochemical regulating tank is connected with an upper water outlet of the neutralization sedimentation tank through a sewage pipeline, a lower water outlet of the biochemical regulating tank is connected with a bottom water inlet of the anaerobic tower through a sewage pipeline and an anaerobic water inlet pump, and a submersible stirrer and a floating ball liquid level meter are arranged in the biochemical regulating tank; a water distribution system and a three-phase separator are arranged in the anaerobic tower, and a water outlet at the upper part of the anaerobic tower is connected with a water inlet at the bottom of the anoxic tank through a sewage pipeline; the upper water outlet of the anoxic tank is connected with the bottom water inlet of the contact oxidation tank through a sewage pipeline, combined fillers are arranged in the anoxic tank and the contact oxidation tank, a microporous aerator is arranged at the bottom of the contact oxidation tank, and a portable dissolved oxygen instrument is arranged in the contact oxidation tank; the liquid inlet at the bottom of the secondary sedimentation tank is connected with the liquid outlet at the upper part of the contact oxidation tank through a sewage pipeline, the inclined tube packing is arranged in the secondary sedimentation tank, and the sludge outlet at the bottom of the secondary sedimentation tank is connected with a sludge concentration tank through a sludge pipeline and a sludge pump.
4. The multi-stage multi-section combined type chemical high-difficulty wastewater zero-discharge treatment system according to claim 1, which is characterized in that: the bottom water inlet of the Fenton catalytic reaction tank is connected with the upper water outlet of the secondary sedimentation tank through a sewage pipeline, an online pH meter is arranged in the Fenton catalytic reaction tank, the bottom of the Fenton catalytic reaction tank is provided with an aerator pipe II, an acid liquid storage tank II, a hydrogen peroxide solution storage tank II and a ferrous sulfate solution storage tank II are respectively connected with the Fenton catalytic reaction tank through a dosing pipeline and a metering pump, wherein a medicine dissolving stirrer is arranged in the ferrous sulfate solution storage tank II, and the effluent of the secondary sedimentation tank is directly discharged or enters the Fenton catalytic reaction tank after reaching the standard.
5. The multi-stage multi-section combined type chemical high-difficulty wastewater zero-discharge treatment system according to claim 1, which is characterized in that: the device is characterized in that a sodium hydroxide solution storage tank II and a polyacrylamide solution storage tank II are respectively connected with a dosing mixing tank II through dosing pipelines and metering pumps, a medicine dissolving stirrer is respectively arranged in the sodium hydroxide solution storage tank II and the polyacrylamide solution storage tank II, a mixing stirrer is arranged in the dosing mixing tank II, an online pH meter and a central guide cylinder are arranged in a final sedimentation tank, and a bottom sludge outlet of the final sedimentation tank is connected with a sludge concentration tank through a sludge pipeline and a sludge pump.
6. The multi-stage multi-section combined type chemical high-difficulty wastewater zero-discharge treatment system according to claim 1, which is characterized in that: the middle water pool lower part delivery port passes through sewage line and elevator pump and is connected with quartzy sand filter water inlet, quartzy sand filter delivery port passes through sewage line and is connected with the active carbon filter water inlet, the active carbon filter delivery port passes through sewage line and security filter and intake pump and is connected with the ultrafiltration system water inlet, the ultrafiltration system delivery port passes through sewage line and is connected with water tank I upper portion water inlet, water tank I lower part delivery port passes through sewage line and security filter and intake pump and is connected with reverse osmosis system water inlet, the reverse osmosis system delivery port passes through sewage line and is connected with water tank II upper portion water inlet, water tank II lower part delivery port passes through sewage line and reuse water pump and delivers to workshop retrieval and utilization production.
7. The multi-stage multi-section combined type chemical high-difficulty wastewater zero-discharge treatment system according to claim 1, which is characterized in that: the sludge concentration tank is connected with a sludge inlet of the plate-and-frame type sludge dewatering machine through a sludge pipeline and a sludge screw pump, the polyacrylamide solution storage tank III is connected with the sludge inlet of the plate-and-frame type sludge dewatering machine through a dosing pipeline and a metering pump, and a drug dissolving stirrer is arranged in the polyacrylamide solution storage tank III.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111892258A (en) * | 2020-09-16 | 2020-11-06 | 乾坤环保股份有限公司 | Multistage combined type chemical industry high difficulty waste water zero release processing system |
| CN119912109A (en) * | 2025-02-28 | 2025-05-02 | 中国天辰工程有限公司 | A biomass methanol wastewater treatment process and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892258A (en) * | 2020-09-16 | 2020-11-06 | 乾坤环保股份有限公司 | Multistage combined type chemical industry high difficulty waste water zero release processing system |
| CN119912109A (en) * | 2025-02-28 | 2025-05-02 | 中国天辰工程有限公司 | A biomass methanol wastewater treatment process and device |
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