CN107311379A - A kind of diaphragm produces the handling process of waste water - Google Patents
A kind of diaphragm produces the handling process of waste water Download PDFInfo
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- CN107311379A CN107311379A CN201710707448.0A CN201710707448A CN107311379A CN 107311379 A CN107311379 A CN 107311379A CN 201710707448 A CN201710707448 A CN 201710707448A CN 107311379 A CN107311379 A CN 107311379A
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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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
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/22—Separation; Purification; Stabilisation; Use of additives
- C07C231/24—Separation; Purification
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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
- C02F1/22—Treatment of water, waste water, or sewage by freezing
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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
- C02F1/46104—Devices therefor; Their operating or servicing
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
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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
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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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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Abstract
The invention discloses the handling process that a kind of diaphragm produces waste water, including the technique handled respectively DMF waste water, high-concentration waste water and high-salt wastewater.The recycling that the present invention realizes diaphragm production waste water is recycled, and recovery has obtained DMF solvent, recycle-water and disinfection by chlorine dioxide water, turns waste into wealth.
Description
Technical field
The present invention relates to field of waste water treatment, the handling process of waste water is produced more particularly, to a kind of diaphragm.
Background technology
Membrane process is widely used in waste water treatment engineering, and the waste water that film factory produces is a kind of high concentration organic waste
Water, mainly organic solvent, including DMA, polyvinylpyrrolidone, polyethylene glycol, glycerine, ethanol etc., gather
The biochemical poor-performing of vinylpyrrolidone, polyethylene glycol, also containing the higher sulfurous acid waste water of concentration, composition is answered in waste water
It is miscellaneous, it is divided into DMF waste water, high-concentration waste water and high-salt wastewater, at present, also no one kind can carry out effective to diaphragm production waste water
The system of processing.
The content of the invention
In view of the above-mentioned problems, the invention provides the handling process that a kind of diaphragm produces waste water, effectively solving background technology
In the problem of point out.
The technical solution adopted by the present invention is：
A kind of diaphragm produces the handling process of waste water, comprises the following steps：
1) DMF waste water, high-concentration waste water and high-salt wastewater, are collected into DMF wastewater collection ponds, high-concentration waste water respectively to receive
In Ji Chi and high-salt wastewater collecting pit；
2), by the DMF waste water in DMF wastewater collection ponds, high-concentration waste water collecting pit and high-salt wastewater collecting pit, high concentration
Regulating water quality in waste water and high-salt wastewater distribution feeding 1# regulating reservoirs, 2# regulating reservoirs and 3# regulating reservoirs, 2# regulating reservoirs are by adding
Hydrochloric acid, regulation ph to 3~5,2# regulating reservoirs adjusts ph to 3~5 by adding sulfuric acid；
3), step 2) in the water outlet of 1# regulating reservoirs enter rectifying column carry out rectifying, obtain DMF solvent and rectifying column raffinate, DMF
Solvent is directly reclaimed, rectifying column raffinate enter step 2) in 2# regulating reservoir regulating water qualities；
4), step 2) in the water outlet of 2# regulating reservoirs enter 2# micro-electrolysis reactions pond, waste water COD is degraded, 2# is entered back into
Catalytic oxidation pond is handled, by adding hydrogen peroxide and iron ammonium sulfate, is reacted through aeration agitation, and further reduction is useless
Water COD, makes in waste water hardly degraded organic substance be degraded to small organic molecule, the pond water outlet of 2# catalytic oxidations through alkali adjust ph to
The pond water outlet of 8~10,2# catalytic oxidation is precipitated into 2# sedimentation basins, and the water outlet of 2# sedimentation basins enters at biochemical reaction tank
Reason, reduces content of organics；
5), step 4) in biochemical reaction tank water outlet enter BWRO systems, for being purified to biochemical reaction tank water outlet,
And send into reuse pool；
6), step 2) in the water outlet of 3# regulating reservoirs enter 3# micro-electrolysis reactions pond, waste water COD is degraded, 3# is entered back into
Catalytic oxidation pond is handled, by adding hydrogen peroxide and iron ammonium sulfate, is reacted through aeration agitation, and further reduction is useless
The pond water outlet of water COD, 3# catalytic oxidation adjusts ph to 8~10 through alkali, the pond water outlet of 3# catalytic oxidations enters 3# sedimentation basins
Precipitated；
7), step 6) in the water outlet of 3# sedimentation basins enter nanofiltration system carry out a divalent salts separation and sodium sulphate concentration, control
The sodium sulphate content of the nanofiltration concentrated water of nanofiltration system processed is 40000~60000mg/l；
8), step 7) in the nanofiltration concentrated water of nanofiltration system concentrated into counter-infiltration system A,
The concentrated water sodium sulphate content for controlling counter-infiltration system A is 120000~150000mg/l, and fresh water enters reuse pool；
9), step 8) in counter-infiltration system A concentrated water enter freezing and crystallizing device carry out freezing and crystallizing；
10), step 7) in the obtained nanofiltration fresh water of nanofiltration system processing concentrated into counter-infiltration system B, control instead
Osmosis system B concentrated water sodium chloride content is 20000~50000mg/l, and counter-infiltration system B concentrated water enters electric drive membranous system
Carry out salt and be concentrated into 150000~200000mg/l, obtain electric drive membranous system concentrated water and electric drive membranous system fresh water, electric drive
Membranous system fresh water is back to the front end of nanofiltration system；
11), step 10) in the obtained electric drive membranous system concentrated water of electric drive membranous system processing enter chlorine dioxide generator
Handled, disinfection by chlorine dioxide water is made.
Preferably, the step 4) in 2# micro-electrolysis reactions pond and step 6) in 3# micro-electrolysis reactions pond use
Fe-C micro electrolysis technology is degraded to waste water COD.
Preferably, the step 4) in biochemical reaction tank include successively front and rear connected hydrolysis acidification pool, anaerobic pond,
Aerobic Pond and MBR reaction tanks, for carrying out biochemical reaction to the water outlet of 2# sedimentation basins, reduce content of organics.
Present invention also offers the processing system that a kind of diaphragm produces waste water, including：
DMF wastewater collection ponds, for collecting DMF waste water；
1# regulating reservoirs, the water quality for adjusting DMF waste water；
Rectifying column, for carrying out rectifying to the water outlet of 1# regulating reservoirs, obtains DMF solvent and rectifying column raffinate；
High-concentration waste water collecting pit, for collecting high-concentration waste water；
2# regulating reservoirs, the water quality for adjusting high-concentration waste water；
2# micro-electrolysis reactions pond, degrades to waste water COD；
2# catalytic oxidations pond, is handled the pond water outlet of 2# micro-electrolysis reactions, sub- by adding hydrogen peroxide and sulfuric acid
Iron ammonium, reacts through aeration agitation, further reduces waste water COD, hardly degraded organic substance in waste water is degraded to small organic molecule,
The pond water outlet of 2# catalytic oxidations adjusts ph to 8~10 through alkali；
2# sedimentation basins, are precipitated to the pond water outlet of 2# catalytic oxidations；
Biochemical reaction tank, including front and rear connected hydrolysis acidification pool, anaerobic pond, Aerobic Pond and MBR reaction tanks successively, are used for
Biochemical reaction is carried out to the water outlet of 2# sedimentation basins, content of organics is reduced；
BWRO systems, for being purified to biochemical reaction tank water outlet, and send into reuse pool；
High-salt wastewater collecting pit, for collecting high-salt wastewater；
3# regulating reservoirs, the water quality for adjusting high-salt wastewater, by adding sulfuric acid, adjusts ph to 3~5；
3# micro-electrolysis reactions pond, degrades to waste water COD；
3# catalytic oxidations pond, is handled the pond water outlet of 3# micro-electrolysis reactions, sub- by adding hydrogen peroxide and sulfuric acid
Iron ammonium, reacts through aeration agitation, further reduces waste water COD, and the pond water outlet of 3# catalytic oxidations adjusts ph to 8~10 through alkali；
3# sedimentation basins, are precipitated to the pond water outlet of 3# catalytic oxidations；
Nanofiltration system, a divalent salts separation and the concentration of sodium sulphate are carried out to the water outlet of 3# sedimentation basins, control nanofiltration system
The sodium sulphate content of nanofiltration concentrated water is 40000~60000mg/l；
Counter-infiltration system A, is concentrated for the nanofiltration concentrated water to nanofiltration system, control counter-infiltration system A concentrated water sulphur
Sour sodium content is 120000~150000mg/l, and fresh water enters reuse pool；
Freezing and crystallizing device, freezing and crystallizing is carried out for the concentrated water to counter-infiltration system A；
Counter-infiltration system B, is concentrated for the fresh water to nanofiltration system, control counter-infiltration system B concentrated water sodium chloride
Content is 20000~50000mg/l；
Electric drive membranous system, carries out salt for the concentrated water to counter-infiltration system B and is concentrated into 150000~200000mg/l, obtain
To electric drive membranous system concentrated water and electric drive membranous system fresh water, electric drive membranous system fresh water is back to the front end of nanofiltration system；
Chlorine dioxide generator, for handling electric drive membranous system concentrated water, is made disinfection by chlorine dioxide water.
Preferably, described 2# micro-electrolysis reactions pond and 3# micro-electrolysis reactions pond use Fe-C micro electrolysis technology to useless
Water COD is degraded.
The recycling that the present invention realizes diaphragm production waste water is recycled, and recovery has obtained DMF solvent, recycle-water and two
Chlorine monoxid disinfectant, turns waste into wealth.
Brief description of the drawings
Fig. 1 is flowage structure schematic diagram of the invention.
Embodiment
The present invention is described in further detail below by specific embodiment and with reference to accompanying drawing.
Embodiment 1
A kind of diaphragm produces the handling process of waste water, comprises the following steps：
1) DMF waste water, high-concentration waste water and high-salt wastewater, are collected into DMF wastewater collection ponds, high-concentration waste water respectively to receive
In Ji Chi and high-salt wastewater collecting pit；
2), by the DMF waste water in DMF wastewater collection ponds, high-concentration waste water collecting pit and high-salt wastewater collecting pit, high concentration
Regulating water quality in waste water and high-salt wastewater distribution feeding 1# regulating reservoirs, 2# regulating reservoirs and 3# regulating reservoirs, 2# regulating reservoirs are by adding
Hydrochloric acid, regulation ph to 3~5,2# regulating reservoirs adjusts ph to 3~5 by adding sulfuric acid；
3), step 2) in the water outlet of 1# regulating reservoirs enter rectifying column carry out rectifying, obtain DMF solvent and rectifying column raffinate, DMF
Solvent is directly reclaimed, rectifying column raffinate enter step 2) in 2# regulating reservoir regulating water qualities；
4), step 2) in the water outlet of 2# regulating reservoirs enter 2# micro-electrolysis reactions pond, waste water COD is degraded, described 2#
Micro-electrolysis reaction pond is degraded using Fe-C micro electrolysis technology to waste water COD, is entered back at 2# catalytic oxidations pond
Reason, by adding hydrogen peroxide and iron ammonium sulfate, reacts through aeration agitation, further reduces waste water COD, make difficult degradation in waste water
Organic matter degradation is small organic molecule, and the pond water outlet of 2# catalytic oxidations adjusts ph to 8~10,2# catalytic oxidations through alkali
Pond water outlet is precipitated into 2# sedimentation basins, and the water outlet of 2# sedimentation basins includes successively into biochemical reaction tank processing, biochemical reaction tank
Front and rear connected hydrolysis acidification pool, anaerobic pond, Aerobic Pond and MBR reaction tanks, for carrying out biochemical reaction to the water outlet of 2# sedimentation basins,
Reduce content of organics；
5), step 4) in biochemical reaction tank water outlet enter BWRO systems, for being purified to biochemical reaction tank water outlet,
And send into reuse pool；
6), step 2) in the water outlet of 3# regulating reservoirs enter 3# micro-electrolysis reactions pond, waste water COD is degraded, described 3#
Micro-electrolysis reaction pond is degraded using Fe-C micro electrolysis technology to waste water COD, is entered back at 3# catalytic oxidations pond
Reason, by adding hydrogen peroxide and iron ammonium sulfate, reacts through aeration agitation, further reduces waste water COD, 3# catalytic oxidations
Pond water outlet adjusts ph to 8~10 through alkali, the pond water outlet of 3# catalytic oxidations is precipitated into 3# sedimentation basins；
7), step 6) in the water outlet of 3# sedimentation basins enter nanofiltration system carry out a divalent salts separation and sodium sulphate concentration, control
The sodium sulphate content of the nanofiltration concentrated water of nanofiltration system processed is 40000~60000mg/l；
8), step 7) in the nanofiltration concentrated water of nanofiltration system concentrated into counter-infiltration system A,
The concentrated water sodium sulphate content for controlling counter-infiltration system A is 120000~150000mg/l, and fresh water enters reuse pool；
9), step 8) in counter-infiltration system A concentrated water enter freezing and crystallizing device carry out freezing and crystallizing；
10), step 7) in the obtained nanofiltration fresh water of nanofiltration system processing concentrated into counter-infiltration system B, control instead
Osmosis system B concentrated water sodium chloride content is 20000~50000mg/l, and counter-infiltration system B concentrated water enters electric drive membranous system
Carry out salt and be concentrated into 150000~200000mg/l, obtain electric drive membranous system concentrated water and electric drive membranous system fresh water, electric drive
Membranous system fresh water is back to the front end of nanofiltration system；
11), step 10) in the obtained electric drive membranous system concentrated water of electric drive membranous system processing enter chlorine dioxide generator
Handled, disinfection by chlorine dioxide water is made.
Embodiment 2
As shown in figure 1, a kind of diaphragm produces the processing system of waste water, it is characterised in that including：
DMF wastewater collection ponds, for collecting DMF waste water；
1# regulating reservoirs, the water quality for adjusting DMF waste water；
Rectifying column, for carrying out rectifying to the water outlet of 1# regulating reservoirs, obtains DMF solvent and rectifying column raffinate；
High-concentration waste water collecting pit, for collecting high-concentration waste water；
2# regulating reservoirs, the water quality for adjusting high-concentration waste water；
2# micro-electrolysis reactions pond, is degraded using Fe-C micro electrolysis technology to waste water COD；
2# catalytic oxidations pond, is handled the pond water outlet of 2# micro-electrolysis reactions, sub- by adding hydrogen peroxide and sulfuric acid
Iron ammonium, reacts through aeration agitation, further reduces waste water COD, hardly degraded organic substance in waste water is degraded to small organic molecule,
The pond water outlet of 2# catalytic oxidations adjusts ph to 8~10 through alkali；
2# sedimentation basins, are precipitated to the pond water outlet of 2# catalytic oxidations；
Biochemical reaction tank, including front and rear connected hydrolysis acidification pool, anaerobic pond, Aerobic Pond and MBR reaction tanks successively, are used for
Biochemical reaction is carried out to the water outlet of 2# sedimentation basins, content of organics is reduced；
BWRO systems, for being purified to biochemical reaction tank water outlet, and send into reuse pool；
High-salt wastewater collecting pit, for collecting high-salt wastewater；
3# regulating reservoirs, the water quality for adjusting high-salt wastewater, by adding sulfuric acid, adjusts ph to 3~5；
3# micro-electrolysis reactions pond, is degraded using Fe-C micro electrolysis technology to waste water COD；
3# catalytic oxidations pond, is handled the pond water outlet of 3# micro-electrolysis reactions, sub- by adding hydrogen peroxide and sulfuric acid
Iron ammonium, reacts through aeration agitation, further reduces waste water COD, and the pond water outlet of 3# catalytic oxidations adjusts ph to 8~10 through alkali；
3# sedimentation basins, are precipitated to the pond water outlet of 3# catalytic oxidations；
Nanofiltration system, a divalent salts separation and the concentration of sodium sulphate are carried out to the water outlet of 3# sedimentation basins, control nanofiltration system
The sodium sulphate content of nanofiltration concentrated water is 40000~60000mg/l；
Counter-infiltration system A, is concentrated for the nanofiltration concentrated water to nanofiltration system, control counter-infiltration system A concentrated water sulphur
Sour sodium content is 120000~150000mg/l, and fresh water enters reuse pool；
Freezing and crystallizing device, freezing and crystallizing is carried out for the concentrated water to counter-infiltration system A；
Counter-infiltration system B, is concentrated for the fresh water to nanofiltration system, control counter-infiltration system B concentrated water sodium chloride
Content is 20000~50000mg/l；
Electric drive membranous system, carries out salt for the concentrated water to counter-infiltration system B and is concentrated into 150000~200000mg/l, obtain
To electric drive membranous system concentrated water and electric drive membranous system fresh water, electric drive membranous system fresh water is back to the front end of nanofiltration system；
Chlorine dioxide generator, for handling electric drive membranous system concentrated water, is made disinfection by chlorine dioxide water.
Claims (3)
1. a kind of diaphragm produces the handling process of waste water, it is characterised in that comprise the following steps：
1) DMF waste water, high-concentration waste water and high-salt wastewater, are collected into DMF wastewater collection ponds, high-concentration waste water collecting pit respectively
In high-salt wastewater collecting pit；
2), by the DMF waste water in DMF wastewater collection ponds, high-concentration waste water collecting pit and high-salt wastewater collecting pit, high-concentration waste water
With regulating water quality in high-salt wastewater distribution feeding 1# regulating reservoirs, 2# regulating reservoirs and 3# regulating reservoirs, 2# regulating reservoirs by adding hydrochloric acid,
Regulation ph, by adding sulfuric acid, adjusts ph to 3~5 to 3~5,2# regulating reservoirs；
3), step 2) in the water outlet of 1# regulating reservoirs enter rectifying column carry out rectifying, obtain DMF solvent and rectifying column raffinate, DMF solvent
Directly reclaimed, rectifying column raffinate enter step 2) in 2# regulating reservoir regulating water qualities；
4), step 2) in the water outlet of 2# regulating reservoirs enter 2# micro-electrolysis reactions pond, waste water COD is degraded, enter back into 2# be catalyzed
Oxidation reaction pond is handled, by adding hydrogen peroxide and iron ammonium sulfate, is reacted through aeration agitation, further reduces waste water
COD, makes hardly degraded organic substance in waste water be degraded to small organic molecule, the pond water outlet of 2# catalytic oxidations adjusts ph to 8 through alkali
The pond water outlet of~10,2# catalytic oxidation is precipitated into 2# sedimentation basins, and the water outlet of 2# sedimentation basins is handled into biochemical reaction tank,
Reduce content of organics；
5), step 4) in biochemical reaction tank water outlet enter BWRO systems, for being purified to biochemical reaction tank water outlet, and send
Enter reuse pool；
6), step 2) in the water outlet of 3# regulating reservoirs enter 3# micro-electrolysis reactions pond, waste water COD is degraded, enter back into 3# be catalyzed
Oxidation reaction pond is handled, by adding hydrogen peroxide and iron ammonium sulfate, is reacted through aeration agitation, further reduces waste water
The pond water outlet of COD, 3# catalytic oxidation adjusts ph to 8~10 through alkali, the pond water outlet of 3# catalytic oxidations is entered into 3# sedimentation basins
Row precipitation；
7), step 6) in the water outlet of 3# sedimentation basins enter nanofiltration system and carry out divalent salts separation and the concentration of sodium sulphate, control receives
The sodium sulphate content of the nanofiltration concentrated water of filter system is 40000~60000mg/l；
8), step 7) in the nanofiltration concentrated water of nanofiltration system concentrated into counter-infiltration system A, control counter-infiltration system A's is dense
Aqueous sodium persulfate content is 120000~150000mg/l, and fresh water enters reuse pool；
9), step 8) in counter-infiltration system A concentrated water enter freezing and crystallizing device carry out freezing and crystallizing；
10), step 7) in the obtained nanofiltration fresh water of nanofiltration system processing concentrated into counter-infiltration system B, control counter-infiltration
System B concentrated water sodium chloride content is 20000~50000mg/l, and counter-infiltration system B concentrated water is carried out into electric drive membranous system
Salt is concentrated into 150000~200000mg/l, obtains electric drive membranous system concentrated water and electric drive membranous system fresh water, electric drive membrane system
System fresh water is back to the front end of nanofiltration system；
11), step 10) in the obtained electric drive membranous system concentrated water of electric drive membranous system processing enter chlorine dioxide generator progress
Processing, is made disinfection by chlorine dioxide water.
2. a kind of diaphragm according to claim 1 produces the handling process of waste water, it is characterised in that the step 4) in
2# micro-electrolysis reactions pond and step 6) in 3# micro-electrolysis reactions pond waste water COD is dropped using Fe-C micro electrolysis technology
Solution.
3. a kind of diaphragm according to claim 1 or 2 produces the handling process of waste water, it is characterised in that the step 4)
In biochemical reaction tank include front and rear connected hydrolysis acidification pool, anaerobic pond, Aerobic Pond and MBR reaction tanks successively, for 2#
Sedimentation basin water outlet carries out biochemical reaction, reduces content of organics.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710707448.0A CN107311379A (en) | 2017-08-17 | 2017-08-17 | A kind of diaphragm produces the handling process of waste water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710707448.0A CN107311379A (en) | 2017-08-17 | 2017-08-17 | A kind of diaphragm produces the handling process of waste water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183023A (en) * | 2019-06-21 | 2019-08-30 | 无锡中天固废处置有限公司 | A method of recycling sodium chloride from the waste water containing DMAC, polyurethane |
| CN113562894A (en) * | 2021-08-20 | 2021-10-29 | 桂林南药股份有限公司 | Treatment method and treatment system for DMF (dimethyl formamide) wastewater and DMSO (dimethyl sulfoxide) wastewater |
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