CN108128968A - The pesticide wastewater resource processing system and method for a kind of sodium chloride-containing - Google Patents
The pesticide wastewater resource processing system and method for a kind of sodium chloride-containing Download PDFInfo
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- CN108128968A CN108128968A CN201711248667.3A CN201711248667A CN108128968A CN 108128968 A CN108128968 A CN 108128968A CN 201711248667 A CN201711248667 A CN 201711248667A CN 108128968 A CN108128968 A CN 108128968A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/343—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the pharmaceutical industry, e.g. containing antibiotics
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/284—Anaerobic digestion processes using anaerobic baffled reactors
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The invention discloses the pesticide wastewater resource processing systems and method of a kind of sodium chloride-containing, belong to sewage water treatment method field, which includes Facultative Halophiles biochemical system, nano filter membrance device, electrodialysis plant, electrocatalysis oxidation apparatus；Facultative Halophiles biochemical system includes the aerobic device of the first Facultative Halophiles, Facultative Halophiles anaerobic device, the aerobic device of the second Facultative Halophiles；The aerobic device of second Facultative Halophiles includes Facultative Halophiles MBR devices；The processing system further includes reverse osmosis unit；The invention also discloses the processing methods of waste water, using the method flow of Facultative Halophiles biochemistry+MBR+ NF membranes+electrodialysis+electro-catalysis, pesticide wastewater is after processing, producing water water quality is good, in being produced applied to enterprise, the water resource in waste water is recycled, total content of organic carbon is low in obtained sodium chloride salt waste water, chlor-alkali production is may be used as, has recycled the sodium chloride salt in waste water.
Description
Technical field
The invention belongs to a kind of processing of the pesticide wastewater resource of field of industrial waste water treatment, in particular to sodium chloride-containing
System and method.
Background technology
Mostly using soda acids and relevant sodium sulphate, chlorine such as hydrochloric acid, sulfuric acid, sodium hydroxide, nitric acid during pesticide producing
Change the salt such as sodium, sodium nitrate, therefore, pesticide wastewater is mainly characterized by：It is with high salt（Mass fraction is 3% ~ 30%）, high organic matter
（COD>10000mg/L）, wherein salt ingredient be mainly sodium chloride salt.It reduces and gives up often through dilution during the processing of this kind of waste water
The salt content of water, treated, and waste water is discharged into environment the deterioration for not only resulting in environment, also results in soil and the salt in basin
Alkalize phenomenon.In addition for the organic matter in waste water often containing phenyl ring type organic and halogenated hydrocarbon organic matter, biodegradability is poor, tool
There is higher bio-toxicity, it is daily even to influence people’s lives there are larger Environmental security hidden danger.
The method of traditional this kind of pesticide wastewater of chemical wastewater treatment is：1）It is concentrated by evaporation desalination, this method processing
Needed for energy consumption it is higher, the salt generated after concentration belongs to dangerous waste, it is difficult to handle；2）Conventional process is carried out after dilution, this
Kind method processing waste water increases the total release of enterprise wastewater, is carried out at the same time Fenton oxidation, iron-carbon micro-electrolysis, catalysis oxidation etc.
Technology, these technologies are limited by the factors such as the influencing of waste water kind organic matter, method condition, processing cost, cause to handle out
Harmful effect still is caused to environment containing part hardly degraded organic substance in water.These treatment technologies, have on the one hand aggravated environment
On the other hand the discharge capacity of middle pollutant is also extremely limited the development of many chemical enterprises.
The extracting method of inorganic salts and the recycling of industrial wastewater profit in a kind of industrial wastewater are disclosed in existing technology
Use method（CN103224261 B), including industrial wastewater is concentrated by evaporation, obtain solid inorganic salt, by solid inorganic salt less than
Or equal to 1000 DEG C at a temperature of contacted with oxygen-containing gas, be carbonized to obtain high purity inorganic salt.The patent is conducive to the resource of salt
Change, but obtained salt still belongs to salt-mixture, can not directly carry out recycling, and is not referred in the technology to useless
Water is not carried out recycling, while energy consumption is higher when applying generally to use.
At present for the recycling of chemical wastewater treatment during, be part resource mostly, the recycling of water or salt
Recycling is not carried out the complete resource to this kind of waste water, makes salt or water resource waste in waste water, and utilizes suitable work
Skill and equipment realize pesticide wastewater the recycling of salt and water, and there is far-reaching influence and society to imitate for an enterprise
Benefit.Therefore, the processing system and processing method for how designing a kind of recycling of water and/or the recycling of salt become Industry Waste
Water treatment field strategic point technical barrier to be solved.
Invention content
The present invention is not carried out complete recycling, traditional wastewater treatment method for waste water in the prior art
The problem of still containing hard-degraded substance in waste water after high energy consumption and conventional process, harmful effect caused to environment, this
A kind of disclosure of the invention pesticide wastewater resource processing system and method for sodium chloride-containing, using Facultative Halophiles biochemistry, MBR, receives
Filter membrane, electrodialysis, electro-catalysis method flow, after the processing method, producing water water quality is good, can be applied to enterprise production
In, the water resource in waste water is recycled, total content of organic carbon is low in obtained sodium chloride salt waste water, may be used as chlor-alkali plant progress
Chlor-alkali production has recycled the sodium chloride salt in waste water.
The invention is realized in this way：
The invention discloses the pesticide wastewater resource processing system and method for a kind of sodium chloride-containing, the processing systems
Include Facultative Halophiles biochemical system, nano filter membrance device, electrodialysis plant, electrocatalysis oxidation apparatus successively；The processing system is also
Including reverse osmosis unit, two branches are divided into after the nano filter membrance device, a branch is connect with electrodialysis plant, another branch
It is connect with reverse osmosis unit；Two branches are also classified into after the electrodialysis plant, a branch is connect with electrocatalysis oxidation apparatus,
Another branch is connect with reverse osmosis unit.
The water outlet of Facultative Halophiles aerobic device is pumped into nano filter membrance device, and nanofiltration separation processing is carried out to waste water, is divided into and receives filtration membrane
Water outlet and nanofiltration retention water outlet, according to different water outlets, be pumped into two different branches respectively, wherein receive filtration membrane water outlet be pumped into
Electrodialysis plant, nanofiltration retention water outlet are pumped into reverse osmosis unit.
Filtration membrane of receiving water outlet is pumped into electrodialysis plant, and electrodialysis plant carries out salt concentration to the salt in waste water, is divided into
Electrodialysis condensed water and electrodialysis desalination water according to different condensed water and desalted water, are pumped into two different branches respectively,
Wherein electrodialysis condensed water is pumped into electrocatalysis oxidation apparatus and carries out electrocatalytic oxidation processing, and water outlet is sent to chlor-alkali plant and carries out reuse,
Realize the recycling of sodium chloride；Electrodialysis desalination water is pumped into reverse osmosis unit.
The Facultative Halophiles biochemical system includes the aerobic device of the first Facultative Halophiles, Facultative Halophiles anaerobic device, the second Facultative Halophiles
Aerobic device, the present invention adjust the TDS of waste water using biochemical matching water installation（Total dissolved solidss）, waste water is carried out using Facultative Halophiles
Aerobic+anaerobism+aerobic+MBR devices are handled；Separation is filtered bio-chemical effluent using NF membrane, to the chlorine in waste water
Change sodium and other divalent salts are detached；Concentration transfer is carried out to the sodium chloride salt in waste water using electrodialysis and forms desalination water outlet
And Halite water, desalination water outlet merges with NF membrane trap water carries out reverse-osmosis treated, and concentrate carries out the electrocatalytic oxidation stage
Processing removes nitrogenous anion and the organic matters therein such as nitrate anion therein, nitrite anions.
Further, the Facultative Halophiles anaerobic device is the ABR for being inoculated with anaerobism Facultative Halophiles（Anaerobic baffled reactor）, it is described
Facultative Halophiles be immobilized on grain size be 1 ~ 10mm biological activated carbon on.
Further, the aerobic device of first, second Facultative Halophiles is aerobic resistance to be inoculated in biological activated carbon reactor
Salt bacterium, the aerobic Facultative Halophiles are immobilized on the biological activated carbon that grain size is 30 ~ 120 mesh.
Further, the Facultative Halophiles MBR device mediums are volcano fitros and/or bioactivity high-area carbon；The load
Body grain size is 3 ~ 6mm；0 .1 ~ 0.2um is in the aperture of MBR films used；The membrane material is Kynoar or polytetrafluoro
Ethylene；The form of the MBR films is plate membrane or hollow-fibre membrane.
Further, the membrane module material of the nano filter membrance device for polyamide, Kynoar or polypropylene it is fine in
It is a kind of：The membrane aperture is 0.001-0.0001um, and the membrane module of the nano filter membrance device is board-like, rolling or dish-style.
Further, the membrane module of the electrodialysis plant is homogeneous membrane or heterogeneous membrane.
Further, the electrocatalytic oxidation pole plate in the electrocatalysis oxidation apparatus analyses oxygen pole plate for titanium-based or titanium-based analyses chlorine
Pole plate or graphite electrode plate；The pole plate is constructed as one group or a variety of serial or parallel connections.
Further, the membrane module material of the reverse osmosis unit for polyamide, Kynoar or polypropylene it is fine in
It is a kind of：The membrane aperture is 0.1nm ~ 1nm, and the membrane module of the reverse osmosis unit is board-like, rolling or dish-style.
The invention also discloses the processing method that the sodium chloride and water resource of a kind of pesticide wastewater are handled, including following
Step：
1）The pH to 6 ~ 9, TDS that biochemical matching water installation adjusts waste water is 2% ~ 8%；Since the Facultative Halophiles of the present invention are to the resistance to of TDS
It is 0.5% ~ 10% by limit, therefore water distribution will be changed and adjusted within the salinity that is resistant to Facultative Halophiles is divided into；
2）Biochemical water distribution waste water is pumped into the aerobic device of the first Facultative Halophiles, and Facultative Halophiles carry out aerobic biochemical reaction under aerobic condition；
The aerobic device water outlet of first Facultative Halophiles is pumped into Facultative Halophiles anaerobic device, and Facultative Halophiles carry out anaerobic biochemical reaction under aerobic condition；
3）The gravity flow of Facultative Halophiles anaerobic effluent enters in the aerobic device of the second Facultative Halophiles, and Facultative Halophiles carry out aerobic life under aerobic condition
Change reaction；
4）The aerobic device water outlet of Facultative Halophiles carries out aerobic biochemical reaction, is discharged through the Facultative Halophiles in the aerobic device of the second Facultative Halophiles
MBR devices are filtered waste water；By a series of Facultative Halophiles biochemical treatment, can be removed in waste water under certain salinity
Organic matter：The microorganism of MBR film effectively catching biochemical stages keeps the microbial biomass in biochemical device, increases biochemical device
Middle sludge concentration and sludge retention time strengthen the removal to hardly degraded organic substance, and ensure effluent SS（Solid suspension）
Content concn is relatively low, convenient for the processing of subsequent nano-filtration film；
5）The water outlet of Facultative Halophiles aerobic device is pumped into nano filter membrance device, and nanofiltration separation processing is carried out to waste water, is divided into and receives filtration membrane and go out
Water and nanofiltration retention water outlet；Other divalent salts waste water of NF membrane retention carry out reverse osmosis concentration, and fresh water realizes Treated sewage reusing；It is dense
Water carries out MVR（Mechanical steam recompression technology）Concentrating and desalinating, crystal salt are sent to fixed-end forces, and distillate is back to reverse osmosis
Film；
6）By step 5）Middle nanofiltration separation treated receive filtration membrane water outlet be pumped into electrodialysis plant, electrodialysis plant is in waste water
Salt carry out salt concentration, be divided into electrodialysis condensed water and electrodialysis desalination water；Electrodialytic process is by the TDS in waste water from useless
It is transferred in haline water in water, reduces the treating capacity in electrocatalytic oxidation stage, reduced energy consumption, reduce operating cost；
7）By above-mentioned steps 6）Middle electrodialysis condensed water is pumped into electrocatalysis oxidation apparatus and carries out electrocatalytic oxidation processing, and water outlet is sent to
Chlor-alkali plant carries out reuse, realizes the recycling of sodium chloride；It is handled by electrocatalytic oxidation, reduces organic concentration and nitrogenous nothing
The content of machine object；Specially remove the organic matter and nitrogen substance in effluent part（Organic nitrogen, ammonia nitrogen, nitrate nitrogen, nitrous acid
Salt nitrogen etc.）, the content of useless Organic substance in water is reduced, reaches the requirement as chlor-alkali plant raw materials for production；
8）By above-mentioned steps 5）And step 6）In NF membrane trap water and electrodialysis desalination be hydrated and be pumped into reverse osmosis unit,
Reverse-osmosis treated is carried out, water outlet is divided into reverse osmosis concentrated shrink and reverse osmosis through film water, and reverse osmosis is sent to workshop through film water, real
The recycling of existing water；Feed water by reverse osmosis is discharged the waste water after nanofiltration concentrates for MBR, is mainly larger molecular organics and divalent
The carnallites such as salt, trivalent salt, complicated component；
9）By above-mentioned steps 8）In reverse osmosis concentrated shrink carry out MVR evaporative desalinations, distillate is back to reverse osmosis unit, evaporates
It crystallizes obtained salt and is sent to solid waste center processing；By being concentrated by evaporation, the larger molecular organics and two in reverse osmosis concentration waste water
The carnallites such as valency salt, trivalent salt form solid waste, are removed from waste water, prevent this moieties from being adversely affected to environment.
Compared with prior art, the present invention advantageous effect is：
（1）The present invention for the first time using Facultative Halophiles it is aerobic+aerobic+MBR devices+nanofiltration+electrodialysis+electricity of Facultative Halophiles anaerobism+Facultative Halophiles
Catalysis oxidation+reverse osmosis technology processing pesticide wastewater；
（2）The processing method of the present invention is easy to operate, easy to operate；Wastewater treatment process reduces compared with common biochemical treatment
Extension rate reduces dilution water consumption, reduces operating cost；Wastewater treatment process reduces fortune compared with directly evaporating
Row cost realizes the recycling of sodium chloride；
（3）The present invention efficiently solves the problems, such as the resource utilization rate height of the recycling treatment of pesticide wastewater, water and salt, base
This non-wastewater discharge, solid waste yield is few, and producing water water quality is preferable, and sodium chloride realizes recycling；
（4）The present invention carries out recycling treatment to pesticide wastewater, has recycled the water in pesticide wastewater to the greatest extent
Resource and sodium chloride salt；The recycling of the zero-emission of waste water and sodium chloride in enterprise production process is realized, is had important
Environmental benefit.
Description of the drawings
Fig. 1 is a kind of process flow diagram of the pesticide wastewater method for processing resource of sodium chloride-containing of the present invention.
Specific embodiment
The present invention provides a kind of the pesticide wastewater resource processing system and method for sodium chloride-containing, to make the mesh of the present invention
, technical solution and effect it is clearer, clearly and with reference to attached drawing and give an actual example that the present invention is described in more detail.It should
When point out it is described herein specific implementation only to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, the pH that pesticide wastewater is adjusted to waste water in biochemical matching water installation first is 6 ~ 9, TDS is
2% ~ 8%, within the salinity being resistant to reaching Facultative Halophiles is divided into；Biochemical water distribution waste water is pumped into the aerobic device of the first Facultative Halophiles
Aerobic biochemical reaction is carried out, biological activated carbon reaction is wherein inoculated with aerobic Facultative Halophiles, and Facultative Halophiles are immobilized on grain size as 30 ~ 120 mesh
Biological activated carbon on；The gravity flow of Facultative Halophiles outputted aerobic water enters Facultative Halophiles anaerobic device and carries out anaerobic biochemical reaction, and Facultative Halophiles are detested
Oxygen device is the ABR anaerobic baffled reactors for being inoculated with anaerobism Facultative Halophiles, and Facultative Halophiles are immobilized on the biological activated carbon that grain size is 3 ~ 6mm
On；The gravity flow of Facultative Halophiles anaerobic effluent, which enters, carries out aerobic biochemical reaction in the aerobic device of the second Facultative Halophiles, biological activated carbon reaction
Aerobic Facultative Halophiles are wherein inoculated with, Facultative Halophiles are immobilized on the biological activated carbon that grain size is 30 ~ 120 mesh；The aerobic dress of second Facultative Halophiles
It puts water outlet gravity flow and enters the progress aerobic biochemical reaction of Facultative Halophiles MBR devices, Facultative Halophiles aeration and biological filter device（Facultative Halophiles MBR is filled
It puts）In carrier be volcano fitros or bioactivity high-area carbon or the mixing of volcano fitros and bioactivity high-area carbon, diameter of carrier
For 3 ~ 6mm, the aperture of the MBR films in MBR devices is 0.1 ~ 0.2um, and MBR devices are filtered waste water, will be in waste water it is outstanding
Float and larger molecular organics are trapped in MBR device devices；In MBR devices device water outlet be pumped into nano filter membrance device to waste water into
Row nanofiltration separation processing, be divided into receive filtration membrane water outlet and nanofiltration retention water outlet；Filtration membrane of receiving water outlet is pumped into electrodialysis plant, electric osmose
Analysis apparatus carries out salt concentration to the salt in waste water, is divided into electrodialysis condensed water and electrodialysis desalination water：Electrodialysis condensed water
It is pumped into electrocatalysis oxidation apparatus and carries out electrocatalytic oxidation processing, water outlet is sent to chlor-alkali plant and carries out reuse, realizes the money of sodium chloride
Source；Electrodialysis desalination water merges with NF membrane trap water is pumped into reverse osmosis unit, carries out reverse-osmosis treated, and water outlet is divided into reverse osmosis
Through film water, reverse osmosis is sent to workshop through film water, realizes the recycling of water for saturating condensed water and reverse osmosis；Feed water by reverse osmosis is
MBR is discharged waste water after nanofiltration concentrates, is mainly the carnallites such as larger molecular organics and divalent salts, trivalent salt, complicated component；
Reverse osmosis concentrated shrink carries out MVR evaporative desalinations, and distillate is back to reverse osmosis unit, and the salt that evaporative crystallization obtains is sent in solid waste
Heart processing.Specific embodiment is as follows：
Embodiment 1
The water quality characteristic of pesticide wastewater to be treated is：Wastewater pH is 8.4, conductance 32ms/cm, CODcr 7730mg/
L, Na 33000 mg/L, NH4 +- N 500mg/L, Cl 53000mg/L, SO4 2- 4000mg/L。
MBR films used are plate membrane, and membrane aperture is 0.1 ~ 0.2um；The membrane module rolled film of nano filter membrance device used, fenestra
Diameter is 0.001-0.0001um；Reverse osmosis membrane used is acetate fiber rolled membrane module；Electrodialytic membranes used is heterogeneous membrane；It is used
Electrocatalytic oxidation pole plate, cathode use titanium plate, and anode analyses chlorine pole plate using titanium-based；
Concrete operation step is as follows：
1）Biochemical water distribution：TDS a concentration of 7.6% in waste water, the TDS for adjusting waste water are 2% ~ 8%, are carried out at biochemistry
Reason, water dispensing apparatus water inlet are originated from RO film filtration effluents or electrodialysis desalination water.
2）First Facultative Halophiles are aerobic+aerobic+MBR devices of the+the second Facultative Halophiles of Facultative Halophiles anaerobism：Biochemical matching water installation water outlet according to
Secondary first Facultative Halophiles are aerobic+aerobic+MBR devices processing of the+the second Facultative Halophiles of Facultative Halophiles anaerobism, water outlet carries out nanofiltration membrane treatment.
3）Nanofiltration membrane treatment：Nano filter membrance device is discharged MBR devices and carries out nanofiltration separation processing, is divided into and receives filtration membrane and go out
Water and nanofiltration retention water outlet, the film filtration effluent of sodium chloride-containing carry out step 4 hereafter）Processing, nanofiltration retention water outlet carry out down
The step 6 of text）Processing.
4）Electrodialysis：Filtration membrane of receiving water outlet carries out electrodialysis process, the salt transfer in waste water is separated from water, waste water is divided into
Two parts：A part of waste water TDS contents are less than 0.5%, and another part waste water TDS is 15% or so.The low waste water of TDS contents：
Desalination is discharged, and carries out step 6 hereafter）Processing；The high waste water of TDS contents：Brackish water is concentrated, carries out step 5 hereafter）Place
Reason.
5）Electrocatalytic oxidation：Electrodialysis concentration brackish water is pumped into electrocatalytic oxidation water inlet end, carries out electrocatalytic oxidation processing,
Chlor-alkali plant is sent in water outlet, is used as chlor-alkali production raw material, is realized the recycling of sodium chloride.
6）It is reverse osmosis：To above-mentioned steps 3）Nanofiltration trap water, above-mentioned steps 4）Electrodialysis desalination water outlet, step 7）Production
Raw distillate carries out reverse-osmosis treated, retains the pollutant in waste water, obtains the water outlet for meeting enterprise's industrial water standard, into
The recycling of water is realized in row reuse；The waste water of retention carries out step 7）Processing.
7）MVR evaporators：To above-mentioned steps 6）The reverse osmosis retention waste water generated carries out condensing crystallizing, the solid waste fortune of generation
Toward solid waste center processing, distillate carries out step 6）, step 7）Circular treatment.
In operational process, the TDS that biochemical matching water installation adjusts waste water is 2%；MBR films water flow is 400L/m-2d-1；
NF membrane water flow is 400L/m-2d-1；10 ~ 20V of voltage when electrodialysis is run；Reverse osmosis membrane water flow is 30 L/m-2h-1；The operating condition of electrocatalysis oxidation apparatus is：Influent waste water pH makes the pH of waste water for 7.8 by adding in hydrochloric acid or sodium hydroxide
Between maintaining 7 ~ 8, current density is 30mA/ cm2, hydraulic detention time 2h：
Under the operating conditions described above, reverse osmosis water outlet water quality characteristic is：CODcr is less than 10mg/L, CIOneIt is small less than 30mg/L, TDS
In 50us/cm, producing water water quality is better than tap water, can be back to production technology；Sodium chloride solution purity is 99.9%, TOC contents
Less than 10mg/L, it can be used for the raw materials for production of chlor-alkali plant chlor-alkali.
Pesticide wastewater handles the water rate of recovery 99% by above-mentioned steps, and the sodium chloride salt rate of recovery is more than 90%.
Embodiment 2
The water quality characteristic of pesticide wastewater to be treated is：Wastewater pH is 2.2, conductance 42ms/cm, CODcr 8340mg/
L, Na+39000 mg/L, NH4 +- N 300mg/L, Cl-55000mg/L, SO4 2- 5000mg/L。
MBR films used are plate membrane, and membrane aperture is 0.1 ~ 0.2um；The membrane module rolled film of nano filter membrance device used, fenestra
Diameter is 0.001-0.0001um；Reverse osmosis membrane used is acetate fiber rolled membrane module；Electrodialytic membranes used is heterogeneous membrane；It is used
Electrocatalytic oxidation pole plate, cathode use titanium plate, and anode analyses chlorine pole plate using titanium-based；
Specific operating procedure is same as Example 1.
In operational process, the TDS that biochemical matching water installation adjusts waste water is 1.5%；MBR devices water flow is 350L/m- 2d-1；NF membrane water flow is 450L/m-2d-1；10 ~ 25V of voltage when electrodialysis is run；Reverse osmosis membrane water flow is 40 L/
m-2h-1；The operating condition of electrocatalysis oxidation apparatus is：Influent waste water pH makes waste water for 7.8 by adding in hydrochloric acid or sodium hydroxide
PH maintain 7 ~ 8 between, current density be 20mA/ cm2, hydraulic detention time 2h：
Under the operating conditions described above, reverse osmosis water outlet water quality characteristic is：CODcr is less than 10mg/L, CI mono- and is less than 30mg/L, TDS
Less than 50us/cm, producing water water quality is better than tap water, can be back to production technology；Sodium chloride solution purity contains for 99.9%, TOC
Amount is less than 10mg/L, can be used for the raw materials for production of chlor-alkali plant chlor-alkali.
Pesticide wastewater handles the water rate of recovery 99% by above-mentioned steps, and the sodium chloride salt rate of recovery is more than 90%.
Embodiment 3
The water quality characteristic of pesticide wastewater to be treated is：Wastewater pH is 10.1, conductance 53ms/cm, CODcr
5840mg/L, Na+25000 mg/L, NH4 +- N 200mg/L, Cl-23000mg/L, SO4 2- 3000mg/L。
MBR films used are plate membrane, and membrane aperture is 0.1 ~ 0.2um；The membrane module rolled film of nano filter membrance device used, fenestra
Diameter is 0.001-0.0001um；Reverse osmosis membrane used is acetate fiber rolled membrane module；Electrodialytic membranes used is heterogeneous membrane；It is used
Electrocatalytic oxidation pole plate, cathode use titanium plate, and anode analyses chlorine pole plate using titanium-based；
Specific operating procedure is same as Example 1.
In operational process, the TDS that biochemical matching water installation adjusts waste water is 2.5%；MBR devices water flow is 250L/m- 2d-1；NF membrane water flow is 350L/m-2d-1；15 ~ 25V of voltage when electrodialysis is run；RO films water flow is 50L/m-2h-1；
The operating condition of electrocatalysis oxidation apparatus is：Influent waste water pH ties up the pH of waste water for 6.7 by adding in hydrochloric acid or sodium hydroxide
It holds between 7 ~ 8, current density is 15mA/ cm2, hydraulic detention time 2h：
Under the operating conditions described above, reverse osmosis water outlet water quality characteristic is：CODcr is less than 10mg/L, CIOneIt is small less than 30mg/L, TDS
In 50us/cm, producing water water quality is better than tap water, can be back to production technology；Sodium chloride solution purity is 99.9%, TOC contents
Less than 10mg/L, it can be used for the raw materials for production of chlor-alkali plant chlor-alkali.
Pesticide wastewater handles the water rate of recovery 99% by above-mentioned steps, and the sodium chloride salt rate of recovery is more than 90%.
The foregoing is merely the preferable possible embodiments of the present invention, not thereby limit to the scope of the claims of the present invention, therefore all
It is the equivalence changes made with description of the invention and accompanying drawing content, includes and protection scope of the present invention.
Claims (9)
1. the pesticide wastewater resource processing system of a kind of sodium chloride-containing, which is characterized in that the processing system includes resistance to
Salt bacterium biochemical system, nano filter membrance device, electrodialysis plant, electrocatalysis oxidation apparatus；
It is aerobic that the Facultative Halophiles biochemical system includes the aerobic device of the first Facultative Halophiles, Facultative Halophiles anaerobic device, the second Facultative Halophiles
Device；
The aerobic device of second Facultative Halophiles includes Facultative Halophiles MBR devices；
The processing system further includes reverse osmosis unit；
It is divided into two branches after the nano filter membrance device, a branch is connect with electrodialysis plant, another branch and reverse osmosis dress
Put connection；
Two branches are also classified into after the electrodialysis plant, a branch is connect with electrocatalysis oxidation apparatus, another branch with it is anti-
Permeability apparatus connects.
A kind of 2. pesticide wastewater resource processing system of sodium chloride-containing according to claim 1, which is characterized in that institute
The Facultative Halophiles anaerobic device stated is the ABR anaerobic baffled reactors for being inoculated with anaerobism Facultative Halophiles, and the Facultative Halophiles are immobilized on grain size
For on the biological activated carbon of 1 ~ 10mm.
A kind of 3. pesticide wastewater resource processing system of sodium chloride-containing according to claim 1, which is characterized in that institute
The aerobic device of the first Facultative Halophiles, the aerobic device of the second Facultative Halophiles stated are that aerobic salt tolerant is inoculated in biological activated carbon reactor
Bacterium, the aerobic Facultative Halophiles are immobilized on the biological activated carbon that grain size is 30 ~ 120 mesh.
A kind of 4. pesticide wastewater resource processing system of sodium chloride-containing according to claim 1, which is characterized in that institute
The Facultative Halophiles MBR device mediums stated are volcano fitros and/or bioactivity high-area carbon；The diameter of carrier is 3 ~ 6mm；Using
MBR films aperture be 0 .1 ~ 0.2um；The membrane material is Kynoar or polytetrafluoroethylene (PTFE)；The shape of the MBR films
Formula is plate membrane or hollow-fibre membrane.
A kind of 5. pesticide wastewater resource processing system of sodium chloride-containing according to claim 1, which is characterized in that institute
The membrane module material for the nano filter membrance device stated for polyamide, Kynoar or polypropylene it is fine in one kind：The membrane aperture
For 0.001-0.0001um, the membrane module of the nano filter membrance device is board-like, rolling or dish-style.
A kind of 6. pesticide wastewater resource processing system of sodium chloride-containing according to claim 1, which is characterized in that institute
The membrane module for the electrodialysis plant stated is homogeneous membrane or heterogeneous membrane.
A kind of 7. pesticide wastewater resource processing system of sodium chloride-containing according to claim 1, which is characterized in that institute
Electrocatalytic oxidation pole plate in the electrocatalysis oxidation apparatus stated analyses oxygen pole plate for titanium-based or titanium-based analyses chlorine pole plate or graphite electrode plate；Institute
The pole plate stated is constructed as one group or a variety of serial or parallel connections.
A kind of 8. pesticide wastewater resource processing system of sodium chloride-containing according to claim 1, which is characterized in that institute
The membrane module material for the reverse osmosis unit stated for polyamide, Kynoar or polypropylene it is fine in one kind：The membrane aperture
For 0.1nm ~ 1nm, the membrane module of the reverse osmosis unit is board-like, rolling or dish-style.
9. the pesticide wastewater method for processing resource of a kind of sodium chloride-containing, which is characterized in that the method includes following step
Suddenly：
1）The pH to 6 ~ 9, TDS that biochemical matching water installation adjusts waste water is 2% ~ 8%；
2）Biochemical water distribution waste water is pumped into the aerobic device of the first Facultative Halophiles, and Facultative Halophiles carry out aerobic biochemical reaction under aerobic condition；
The aerobic device water outlet of first Facultative Halophiles is pumped into Facultative Halophiles anaerobic device, and it is anti-to carry out anaerobic biological for Facultative Halophiles under aerobic condition
It should；
3）The gravity flow of Facultative Halophiles anaerobic effluent enters in the aerobic device of the second Facultative Halophiles, and Facultative Halophiles carry out aerobic life under aerobic condition
Change reaction；
4）After aerobic biochemical reaction, water outlet is filtered waste water through the MBR films in the aerobic device of Facultative Halophiles；
5）The water outlet of Facultative Halophiles aerobic device is pumped into nano filter membrance device, and nanofiltration separation processing is carried out to waste water, is divided into and receives filtration membrane and go out
Water and nanofiltration retention water outlet；
6）By step 5）Middle nanofiltration separation treated receive filtration membrane water outlet be pumped into electrodialysis plant, electrodialysis plant is in waste water
Salt carry out salt concentration, be divided into electrodialysis condensed water and electrodialysis desalination water：
7）By above-mentioned steps 6）Middle electrodialysis condensed water is pumped into electrocatalysis oxidation apparatus and carries out electrocatalytic oxidation processing, realizes chlorination
The recycling of sodium；
8）By above-mentioned steps 5）And step 6）In NF membrane trap water and electrodialysis desalination be hydrated and be pumped into reverse osmosis unit,
Reverse-osmosis treated is carried out, water outlet is divided into reverse osmosis concentrated shrink and reverse osmosis through film water, and reverse osmosis realizes the recycling of water through film water；
9）By above-mentioned steps 8）In reverse osmosis concentrated shrink carry out MVR evaporative desalinations, distillate is back to reverse osmosis unit, evaporates
Crystallization.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109694166A (en) * | 2019-03-04 | 2019-04-30 | 重庆尚泽源环保科技有限公司 | A kind of bis- membrane process integrated equipment for sewage treatment of MBR |
| CN110510827A (en) * | 2019-09-12 | 2019-11-29 | 江苏蓝必盛化工环保股份有限公司 | The recycling treatment system and processing method of sodium carboxymethylcellulose production waste water |
| CN110564617A (en) * | 2019-09-17 | 2019-12-13 | 芜湖青弋环保科技有限责任公司 | Preparation method and adding method of salt-tolerant biological agent |
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Application publication date: 20180608 |