CN107381885A - Zero-discharge process and equipment for treating high-salt-content wastewater - Google Patents
Zero-discharge process and equipment for treating high-salt-content wastewater Download PDFInfo
- Publication number
- CN107381885A CN107381885A CN201710529414.7A CN201710529414A CN107381885A CN 107381885 A CN107381885 A CN 107381885A CN 201710529414 A CN201710529414 A CN 201710529414A CN 107381885 A CN107381885 A CN 107381885A
- Authority
- CN
- China
- Prior art keywords
- water
- tmf
- bipolar membrane
- tank
- light electrolysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 120
- 239000012528 membrane Substances 0.000 claims abstract description 60
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 50
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 47
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 28
- 238000005352 clarification Methods 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 239000002253 acid Substances 0.000 claims abstract description 16
- 239000007787 solid Substances 0.000 claims abstract description 15
- 239000012267 brine Substances 0.000 claims abstract description 13
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 13
- 150000003839 salts Chemical class 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 20
- 238000005342 ion exchange Methods 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 14
- 239000006228 supernatant Substances 0.000 claims description 11
- 239000000243 solution Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 239000010802 sludge Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910001424 calcium ion Inorganic materials 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000012467 final product Substances 0.000 claims description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000005189 flocculation Methods 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000010612 desalination reaction Methods 0.000 abstract description 7
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003456 ion exchange resin Substances 0.000 abstract description 5
- 229920003303 ion-exchange polymer Polymers 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- 238000011033 desalting Methods 0.000 abstract 2
- 208000028659 discharge Diseases 0.000 description 17
- 239000012266 salt solution Substances 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000012958 reprocessing Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000628997 Flos Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000007516 brønsted-lowry acids Chemical class 0.000 description 1
- 150000007528 brønsted-lowry bases Chemical class 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/14—Alkali metal compounds
- C25B1/16—Hydroxides
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- 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
-
- 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
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Electrochemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention discloses a zero-emission process for treating high-salt-content wastewater, which sequentially comprises the steps of removing suspended matters, reducing the hardness of the wastewater, performing solid-liquid separation by using a tubular membrane, removing residual hardness by using ion exchange resin, desalting strong brine by using a micro-electrolysis bipolar membrane device, desalting salt by using a reverse osmosis device, and finally obtaining desalted water, acid and sodium hydroxide commodities; the device comprises a wastewater collecting tank, a quick clarification separation device, a primary softening device, a secondary softening device, a TMF concentrated water tank, a TMF lift pump, a TMF system, a TMF production water tank, an exchange lift pump, an ion exchange resin device, a middle production water tank, an electrolysis water feeding pump, a micro-electrolysis bipolar membrane device and a product water tank; the suspended solid in the high salt waste water that contains can be got rid of fast, the hardness in getting rid of the waste water utilizes the bipolar membrane device of microelectrolysis to desalinate strong brine waste water, and the in-process of desalination waste water produces acid and sodium hydroxide commodity, and the working costs is low, and not only the high salt waste water that contains reaches the zero release, still produces extra economic value.
Description
Technical field
The invention belongs to wastewater zero discharge and resource treatment technique field, and in particular to a kind of high slat-containing wastewater processing
Technique of zero discharge and its equipment, for the material for belonging to pollutant in high slat-containing wastewater to be become useful resources.
Background technology
High slat-containing wastewater refers to the waste water of total saliferous mass fraction at least 1%.It is essentially from chemical plant and oil and naturally
Collection processing of gas etc., this waste water contains many kinds of substance (including salt, oil, organic heavy metal and radioactive substance).
The way of production of brine waste is extensive, and water also increases year by year, if the direct discharging of waste water, the material in waste water
Very big influence is caused to environment, in face of today of water resource worsening shortages, how reusing synthesized high slat-containing wastewater, reach
Wastewater zero discharge is simultaneously allowed to a kind of trend that reuse is high slat-containing wastewater processing, while is also a technical barrier.
At present, it is mostly final using distillation desalination process processing, such as patent to make high slat-containing wastewater reach the purpose of zero-emission
For CN200810225841.X《A kind of processing method of high slat-containing wastewater》、CN201521087718.5《A kind of high slat-containing wastewater
Zero-discharge treatment system》、CN201610328533.1《A kind of method of high slat-containing wastewater recycling treatment》.It is big for handling
The high slat-containing wastewater of amount, in order to reduce the amount that high slat-containing wastewater enters crystallizing evaporator, it is required for dense to high slat-containing wastewater progress
Contracting, but because waste water contains very big salinity, directly concentration has the problem of a lot, so need to pre-process waste water,
With ensure film condensing device can stable operation, even if having sufficient pretreatment to high saliferous, film concentration concentrated water side
The danger of fouling be present, in addition film concentration during easily pollution and easily block, it is necessary to frequently to film carry out Chemical cleaning, this
Reduce the service life of film.
This processing method to high slat-containing wastewater, not only cost of investment is high, and operating cost is also high, finally can also produce solid
It is useless --- carnallite.
The content of the invention
The shortcomings that an object of the present invention is to overcome prior art, according to the characteristics of high slat-containing wastewater, there is provided a kind of
High slat-containing wastewater microelectrolysis processing is to reach wastewater zero discharge and the technique of changing waste into resources, operating cost are significantly less than into other
Technique of zero discharge.
The technical solution adopted for the present invention to solve the technical problems is：The technique of zero discharge of high slat-containing wastewater processing, bag
Include following steps
A, waste water quality is adjusted：High slat-containing wastewater is discharged into wastewater collection pond, the waste water for making variation water quality big is adjusted to uniformly
Water quality；
B, suspension in waste water is separated：The suspension flocculation in high slat-containing wastewater is formed a team simultaneously soon by High-speed clarification separator
Speed separation, and suspension is compressed into by mud cake by sludge dehydration device；
C, soften：Supernatant in step B is put into softening plant, by agent-feeding treatment, by the magnesium in water body and calcium from ion
State is converted into solid particles, until calcium ion is reduced to below 40mg/l, magnesium ion is reduced to below 24mg/l；
D, separation of solid and liquid：By tubular membrane filter device to step C processing after supernatant filter, by solid suspension from
Separated in water, the concentrated water after filtering returns to softening plant, and solid particle is after natural subsidence, dewater treatment；
E, hardness is removed：Handled, removed in waste water by production water of the Di to tubular membrane filter device
Remaining hardness；
F, desalinate：The strong brine for eliminating hardness for being obtained step E by light electrolysis bipolar membrane device is treated as light salt brine,
Acid and sodium hydroxide solution are produced in addition；
G, desalination：Concentrated by production water of the reverse osmosis unit to light electrolysis bipolar membrane device, obtain the demineralized water of high-quality,
Concentrated water returns to light electrolysis bipolar membrane device, so as to reach the zero-emission of high slat-containing wastewater.
The technique of zero discharge of described high slat-containing wastewater processing, its step C remove the hardness of waste water, hydrogen-oxygen using Dual alkali
Change sodium chemical feeding quantity to be controlled by pH, the chemical feeding quantity of sodium carbonate determines according to the content of calcium ion in waste water.
The second object of the present invention is to provide a kind of zero-emission equipment of high slat-containing wastewater processing, by water (flow) direction order
The device and part of installation include wastewater collection pond, High-speed clarification separator, softening plant, TMF elevator pumps, TMF systems,
TMF water producing tanks, ion exchange feed pump, Di, ion exchange water producing tank, light electrolysis feed pump, light electrolysis
Bipolar membrane device, middle water producing tank, RO elevator pumps, cartridge filter, high-pressure pump, RO devices and final product water tank；It is described
Wastewater collection pond be made up of collecting pit and the immersible pump in collecting pit, submersible pump outlet separates dress with High-speed clarification simultaneously
Put and be connected with the entrance of softening plant；The supernatant outlet of the High-speed clarification separator is connected with the entrance of softening plant,
Described softening plant has at least two chemicals dosing plants, and the bottom drain of High-speed clarification separator and softening plant is simultaneously
Connect sludge pump；The entrance of described sludge pump connection plate and frame filter press, the outlet connection wastewater collection pond of plate and frame filter press；It is soft
Makeup is put outlet and is connected with TMF elevator pumps, and TMF elevator pumps are connected with the water inlet of TMF systems, and the concentrated waters of TMF systems returns to soft
Disguise the precipitating phase put, the production mouth of a river of TMF systems is connected with TMF water producing tanks；Fed water by ion exchange the outlet of TMF water producing tanks
Pump is connected with the water inlet of Di, the delivery port connection ion exchange production water of the Di
Case, the outlet of the water producing tank are connected by light electrolysis feed pump with the water inlet of light electrolysis bipolar membrane device；Described micro- electricity
Solve bipolar membrane device by neutral delivery port connect among water producing tank, light electrolysis bipolar membrane device respectively by acidic effluent mouth and
Alkaline delivery port is connected with acid solution case and lye tank；Described middle water producing tank is connected by RO elevator pump cartridge filters, is protected
Peace filter be connected by RO high-pressure pumps with RO devices, the production water of RO devices is connected with final product water tank, RO devices it is dense
Water returns to ion exchange water producing tank, is finally reached wastewater zero discharge.
A kind of zero-emission equipment of described high slat-containing wastewater Treatment and recovery, its High-speed clarification separator supernatant
Two reaction tanks and a filtering ponds are also sequentially connected between outlet and the entrance of softening plant.
The beneficial effects of the invention are as follows：
1, the technique of high slat-containing wastewater zero-emission of the present invention, it is to remove suspension in high slat-containing wastewater, is filled subsequently into softening
Put, add sodium hydroxide, adjust pH to 10.0~11.5, add sodium carbonate, by the magnesium in water body and calcium ion from ionic state
Solid particles are converted into, the suspensions such as various solid particles are removed by tubular membrane；The production water of tubular membrane is again through ion exchange
Resin is made a return journey remaining hardness in water removal, and the waste water finally softened enters light electrolysis bipolar membrane device, highly concentrated containing in waste water
Into the salt solution of low concentration, the salt solution of low concentration obtains the demineralized water of high-quality again through reverse osmosis membrane processing for the saline-water reclamation of degree, and
Reverse osmosis concentrated water returns to light electrolysis bipolar membrane device reprocessing, so as to reach wastewater zero discharge；Other light electrolysis bipolar membrane device
During desalinating waste water, caused acid and sodium hydroxide solution, the purpose of recycling is realized.
2, double alkali are added in softening plant in the present invention；Magnesium ion and calcium ion can be so removed, for follow-up dress
Put stable operation and provide guarantee；
3, light electrolysis bipolar membrane device in the present invention can be the saline-water reclamation containing high concentration in waste water into the salt of low concentration
Water, and obtain acid and sodium hydroxide product；
4, the salt solution of low concentration is handled using reverse osmosis membrane in the present invention, obtain the demineralized water of high-quality, and counter-infiltration
Concentrated water returns to light electrolysis bipolar membrane device reprocessing, so as to reach wastewater zero discharge.
In summary, principle of the invention is first to remove magnesium and calcium ion that fouling can be produced in light electrolysis Bipolar Membrane, so
Afterwards pass through light electrolysis bipolar membrane device, the salt solution the saline-water reclamation containing high concentration in waste water into low concentration, low concentration
Salt solution through reverse osmosis membrane processing, obtains the demineralized water of high-quality again, and reverse osmosis concentrated water returns to light electrolysis bipolar membrane device and located again
Reason, so as to reach wastewater zero discharge；During other light electrolysis bipolar membrane device desalination waste water, caused acid and sodium hydroxide
Solution, realize the purpose of recycling.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of present invention process；
Fig. 2 is the structural representation of present device.
Each reference is entitled in figure：1-wastewater collection pond, 2-High-speed clarification separator, 3-softening plant,
4-sludge pump, 5-plate and frame filter press, 6-TMF elevator pumps, 7-TMF systems, 8-TMF water producing tanks, the feedwater of 9-ion exchange
Pump, 10-Di, 11-ion exchange water producing tank, 12-light electrolysis feed pump, 13-light electrolysis Bipolar Membrane
Device, 14-middle water producing tank, 15-lye tank, 16-acid solution case, 17-RO elevator pumps, 18-cartridge filter, 19-RO
High-pressure pump, 20-RO devices, 21-product water tank.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Inventive principle
Zero-emission is reached to high slat-containing wastewater using crystallizing evaporator at present, is because high slat-containing wastewater or the concentrated water of counter-infiltration
Salinity is too high, this bad processing of part water, is directed to this, we are handled high saliferous using light electrolysis bipolar membrane device and given up
Water, the salt of waste water can be converted into corresponding bronsted lowry acids and bases bronsted lowry by it in the case where not introducing new component, i.e. high slat-containing wastewater passes through
Light electrolysis bipolar membrane device, light salt brine changing into, the most anion in high slat-containing wastewater changes into corresponding acid in addition,
It is and most cation ic-converted into corresponding alkali.
Light salt brine can be concentrated further through reverse osmosis membrane, produce the demineralized water of high-quality, meet various reuses, and reverse osmosis
Saturating concentrated water can be handled through light electrolysis bipolar membrane device again, to reach the zero-emission of waste water.In order that light electrolysis Bipolar Membrane fills
Stable operation is put, first needs to remove the calcium ion of high slat-containing wastewater and magnesium ion, to ensure in light electrolysis bipolar membrane device not
Have fouling presence.
The method and step of the present invention includes：Oil removal, the hardness for reducing waste water, tubular membrane separation of solid and liquid, ion is gone to hand over
Resin is changed except residual harness, light electrolysis bipolar membrane device desalination strong brine, reverse osmosis unit desalination, finally obtains demineralized water and acid
With sodium hydroxide commodity.
The equipment of the present invention includes：Wastewater collection pond 1, High-speed clarification separator 2, softening plant 3, elevator pump, TMF
（Tubular type membrane filtration）System 7, Di 10, light electrolysis bipolar membrane device 13, RO high-pressure pumps 19, RO（Counter-infiltration
Concentration）Device 20 etc..
The present invention outstanding advantages be：First, the suspension in high slat-containing wastewater is quickly removed, second, removing in waste water
Hardness, third, being desalinated using light electrolysis bipolar membrane device strong brine waste water, fourth, the desalination of light electrolysis bipolar membrane device is useless
Acid and sodium hydroxide commodity are produced during water, fifth, operating cost is low, not only high slat-containing wastewater reaches zero-emission, also produces
Raw extra economic value（Acid and sodium hydroxide commodity commodity）.
A kind of technique of zero discharge of high slat-containing wastewater microelectrolysis processing of the present invention is made with equipment in conjunction with the accompanying drawings and embodiments
It is further described below：
Embodiment 1：
As shown in figure 1, it is a kind of 1 embodiment of the technique of zero discharge of high slat-containing wastewater microelectrolysis processing of the present invention.Including such as
Lower step：
A, wastewater collection pond：Waste water is interim draining, and variation water quality is big, adjusts uniform water quality herein.
B, High-speed clarification separator：Suspension flocculation in high slat-containing wastewater is formed a team, and quickly separated from waste water, and
Suspension is compressed into mud cake.
C, softening plant：Supernatant in High-speed clarification separator enters the device, by agent-feeding treatment, by water body
Magnesium and calcium be converted into solid particles from ionic state.
D, tubular membrane filter device：Solid suspension in softening plant is separated from the water out, the concentrated water of tubular membrane
Softening plant is returned to, solid particle is after natural subsidence, dewater treatment.
E, Di：The production water of tubular membrane enters the device, by ion exchange resin, removes in waste water
Remaining hardness.
F, light electrolysis bipolar membrane device：The strong brine of hardness is eliminated, passes through being treated as light electrolysis bipolar membrane device
Light salt brine, acid and sodium hydroxide solution are produced in addition.
G, reverse osmosis unit：The production water of light electrolysis bipolar membrane device is concentrated, obtains the demineralized water of high-quality, concentrated water
Light electrolysis bipolar membrane device is returned to, so as to reach the zero-emission of high slat-containing wastewater.
Embodiment 2：
As shown in Fig. 2 implemented for a kind of special equipment of the technique of zero discharge of high slat-containing wastewater microelectrolysis processing of the present invention
Example.
Include by the device and part of the installation of water (flow) direction order：The wastewater collection pond 1 that is connected with high slat-containing wastewater water,
High-speed clarification separator 2, softening plant 3, TMF elevator pumps 6, TMF systems 7, TMF water producing tanks 8, ion exchange feed pump 9, from
Sub-exchange resin device 10, ion exchange water producing tank 11, light electrolysis feed pump 12, light electrolysis bipolar membrane device 13, middle production water
Case 14, reverse osmosis (RO) elevator pump 17, cartridge filter 18, high-pressure pump 19, reverse osmosis (RO) device 20 and final product water tank 21；
Described wastewater collection pond 1 is made up of collecting pit and the immersible pump in collecting pit, submersible pump outlet while and High-speed clarification
Separator 2 is connected with the entrance of softening plant 3；The supernatant outlet of the High-speed clarification separator 2 and softening plant 3
Entrance is connected, and described softening plant 3 has the bottom of at least two chemicals dosing plants, High-speed clarification separator 2 and softening plant 3
Portion's floss hole connects sludge pump 4 simultaneously；Described sludge pump 6 connects the entrance of plate and frame filter press 5, caused by plate and frame filter press 5
Arranged outside mud cake, its pressing filtering liquid returns to wastewater collection pond 1；Softening plant 3 outlet is connected with TMF elevator pumps 6, TMF elevator pumps 6 and
The water inlet of TMF systems 7 is connected, and the concentrated water of TMF systems 7 returns to the precipitating phase of softening plant 3, the production mouth of a river of TMF systems 7 with
TMF water producing tanks 8 are connected；The water inlet that the outlet of TMF water producing tanks 8 passes through ion exchange feed pump 9 and Di 10
Mouth is connected, the delivery port connection ion exchange water producing tank 11 of the Di 10, the outlet of the water producing tank 11
It is connected by light electrolysis feed pump 12 with the water inlet of light electrolysis bipolar membrane device 13；Described light electrolysis bipolar membrane device 13 is logical
Water producing tank 14 among neutral delivery port connection is crossed, light electrolysis bipolar membrane device 13 passes through acidic effluent mouth and alkaline delivery port respectively
With acid solution case 16 and lye tank 17）It is connected；Described middle water producing tank 14 is connected by the cartridge filter 18 of RO elevator pumps 17, is protected
Peace filter 18 is connected by RO high-pressure pumps 19 with RO devices 20, and the production water of RO devices 20 is connected with final product water tank 21,
The concentrated water of RO devices 20 returns to the exchange water producing tank of ion exchange resin, is finally reached wastewater zero discharge.Wherein High-speed clarification separation dress
Put and be also sequentially connected two reaction tanks and a filtering ponds between the entrance of 2 supernatant outlets and softening plant 3.
TMF systems 7 are tubular membrane filter device, and No. CN201410561118.1 of applicant affiliated company application can be selected
Equipment disclosed in patent " a kind of tube type filter membrance production equipment ".
Above equipment makes waste water meet that reuse reaches the purpose of zero-emission.
The claims in the present invention protection domain is not limited to above-described embodiment.
Claims (4)
1. the technique of zero discharge of high slat-containing wastewater processing, it is characterised in that：Comprise the following steps
A, waste water quality is adjusted
High slat-containing wastewater is discharged into wastewater collection pond, the waste water for making variation water quality big is adjusted to uniform water quality；
B, suspension in waste water is separated
The suspension flocculation in high slat-containing wastewater is formed a team and quick separating by High-speed clarification separator, and taken off by sludge
Suspension is compressed into mud cake by water installations；
C, soften
Supernatant in step B is put into softening plant, the magnesium in water body and calcium are converted into solid particles from ionic state, directly
Below 40mg/l is reduced to calcium ion, magnesium ion is reduced to below 24mg/l；
D, filter
The supernatant after step C processing is filtered by tubular membrane filter device, solid suspension is separated from the water out
Come, the concentrated water after filtering returns to softening plant, and solid particle is after natural subsidence, dewater treatment；
E, hardness is removed
Handled by production water of the Di to tubular membrane filter device, remove hardness remaining in waste water；
F, handle
The strong brine for eliminating hardness for being obtained step E by light electrolysis bipolar membrane device is treated as light salt brine, produces in addition
Raw acid and sodium hydroxide solution；
G, concentrate
Concentrated by production water of the reverse osmosis unit to light electrolysis bipolar membrane device, obtain the demineralized water of high-quality, concentrated water is returned
Light electrolysis bipolar membrane device is returned to, so as to reach the zero-emission of high slat-containing wastewater.
2. the technique of zero discharge of high slat-containing wastewater processing according to claim 1, it is characterised in that described step C is adopted
The hardness of waste water is removed with Dual alkali, sodium hydroxide chemical feeding quantity controls by pH, the chemical feeding quantity of sodium carbonate according to calcium in waste water from
The content of son determines.
3. a kind of zero-emission equipment for being used for high slat-containing wastewater described in claim 1 and handling, it is characterised in that suitable by water (flow) direction
The device and part of sequence installation include water collecting pit（1）, High-speed clarification separator（2）, softening plant（3）, TMF elevator pumps
（6）, TMF systems（7）, TMF water producing tanks（8）, ion exchange feed pump（9）, Di（10）, ion exchange production
Water tank（11）, light electrolysis feed pump（12）, light electrolysis bipolar membrane device（13）, middle water producing tank（14）, RO elevator pumps（17）, protect
Pacify filter（18）, high-pressure pump（19）, RO devices（20）With final product water tank（21）；Described wastewater collection pond（1）By
Collecting pit and in collecting pit immersible pump composition, submersible pump outlet simultaneously with High-speed clarification separator（2）Filled with softening
Put（3）Entrance be connected；The High-speed clarification separator（2）Supernatant outlet and softening plant（3）Entrance be connected, institute
The softening plant stated（3）With at least two chemicals dosing plants, High-speed clarification separator（2）And softening plant（3）Bottom row
Put mouth while connect sludge pump（4）；Described sludge pump（6）Connect plate and frame filter press（5）Entrance, plate and frame filter press（5）'s
Outlet connection wastewater collection pond（1）；Softening plant（3）Outlet and TMF elevator pumps（6）It is connected, TMF elevator pumps（6）With TMF systems
（7）Water inlet be connected, TMF systems（7）Concentrated water return to softening plant（3）Precipitating phase, TMF systems（7）The production mouth of a river with
TMF water producing tanks（8）It is connected；TMF water producing tanks（8）Outlet pass through ion exchange feed pump（9）With Di
（10）Water inlet be connected, the Di（10）Delivery port connection ion exchange water producing tank（11）, it is described
Water producing tank（11）Outlet pass through light electrolysis feed pump（12）With light electrolysis bipolar membrane device（13）Water inlet be connected；Described
Light electrolysis bipolar membrane device（13）Middle water producing tank is connected by neutral delivery port（14）, light electrolysis bipolar membrane device（13）Respectively
Pass through acidic effluent mouth and alkaline delivery port and acid solution case（16）And lye tank（17）It is connected；Described middle water producing tank（14）It is logical
Cross RO elevator pumps（17）Cartridge filter（18）It is connected, cartridge filter（18）Pass through RO high-pressure pumps（19）With RO devices（20）Phase
Even, RO devices（20）Production water and final product water tank（21）It is connected, RO devices（20）Concentrated water return to ion exchange production water
Case（11）, it is finally reached wastewater zero discharge.
4. the zero-emission equipment of a kind of high slat-containing wastewater processing according to claim 3, it is characterised in that described is quick
Clarified separation device（2）Supernatant outlet and softening plant（3）Entrance between be also sequentially connected two reaction tanks and a mistake
Filter tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710529414.7A CN107381885A (en) | 2017-07-01 | 2017-07-01 | Zero-discharge process and equipment for treating high-salt-content wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710529414.7A CN107381885A (en) | 2017-07-01 | 2017-07-01 | Zero-discharge process and equipment for treating high-salt-content wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107381885A true CN107381885A (en) | 2017-11-24 |
Family
ID=60334097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710529414.7A Pending CN107381885A (en) | 2017-07-01 | 2017-07-01 | Zero-discharge process and equipment for treating high-salt-content wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107381885A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108640377A (en) * | 2018-05-15 | 2018-10-12 | 苏州洋紫瑞信息科技有限公司 | A kind of safe and efficient environment protection treating equipment of sewage |
| CN108704335A (en) * | 2018-07-03 | 2018-10-26 | 中国科学院青岛生物能源与过程研究所 | A kind of ion chromatographic separation device of pseudo moving bed type |
| CN108751523A (en) * | 2018-08-02 | 2018-11-06 | 北京沃特尔水技术股份有限公司 | High-salt wastewater is except firmly except silicon and concentration method and system |
| CN109851104A (en) * | 2019-02-21 | 2019-06-07 | 北京伟创力科技股份有限公司 | A kind of oil gas field high slat-containing wastewater processing method and equipment |
| CN113060885A (en) * | 2021-03-29 | 2021-07-02 | 大唐环境产业集团股份有限公司 | Resourceful treatment system and method for high-salinity wastewater |
| CN114000163A (en) * | 2021-11-30 | 2022-02-01 | 中国华能集团清洁能源技术研究院有限公司 | Salt-containing wastewater electrolytic hydrogen production system and working method thereof |
| CN114163038A (en) * | 2021-12-22 | 2022-03-11 | 新华制药（寿光）有限公司 | Treatment process and treatment equipment for zero discharge of high-salt-content wastewater |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013075259A (en) * | 2011-09-30 | 2013-04-25 | Kurita Water Ind Ltd | Water recovery apparatus for closed system space |
| CN104370394A (en) * | 2013-08-15 | 2015-02-25 | 北京紫光益天环境工程技术有限公司 | Surface water desalting apparatus by-producing saline waste water treatment method |
| CN105110521A (en) * | 2015-08-25 | 2015-12-02 | 杭州蓝然环境技术有限公司 | Cyclic utilization method of desulphurization waste water |
| CN205603387U (en) * | 2016-02-22 | 2016-09-28 | 麦王环境技术股份有限公司 | Strong brine zero release divides membrane concentrator of matter crystallization |
| CN205773847U (en) * | 2016-05-23 | 2016-12-07 | 海博伦（苏州）环境科技股份有限公司 | A kind of desulfurization wastewater reuse and Zero discharging system |
| CN106517605A (en) * | 2016-11-25 | 2017-03-22 | 武汉尚源新能环境有限公司 | Zero-discharge process and equipment for desulfurization wastewater |
-
2017
- 2017-07-01 CN CN201710529414.7A patent/CN107381885A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013075259A (en) * | 2011-09-30 | 2013-04-25 | Kurita Water Ind Ltd | Water recovery apparatus for closed system space |
| CN104370394A (en) * | 2013-08-15 | 2015-02-25 | 北京紫光益天环境工程技术有限公司 | Surface water desalting apparatus by-producing saline waste water treatment method |
| CN105110521A (en) * | 2015-08-25 | 2015-12-02 | 杭州蓝然环境技术有限公司 | Cyclic utilization method of desulphurization waste water |
| CN205603387U (en) * | 2016-02-22 | 2016-09-28 | 麦王环境技术股份有限公司 | Strong brine zero release divides membrane concentrator of matter crystallization |
| CN205773847U (en) * | 2016-05-23 | 2016-12-07 | 海博伦（苏州）环境科技股份有限公司 | A kind of desulfurization wastewater reuse and Zero discharging system |
| CN106517605A (en) * | 2016-11-25 | 2017-03-22 | 武汉尚源新能环境有限公司 | Zero-discharge process and equipment for desulfurization wastewater |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108640377A (en) * | 2018-05-15 | 2018-10-12 | 苏州洋紫瑞信息科技有限公司 | A kind of safe and efficient environment protection treating equipment of sewage |
| CN108704335A (en) * | 2018-07-03 | 2018-10-26 | 中国科学院青岛生物能源与过程研究所 | A kind of ion chromatographic separation device of pseudo moving bed type |
| CN108704335B (en) * | 2018-07-03 | 2021-02-26 | 中国科学院青岛生物能源与过程研究所 | Simulated moving bed type ion chromatographic separation device |
| CN108751523A (en) * | 2018-08-02 | 2018-11-06 | 北京沃特尔水技术股份有限公司 | High-salt wastewater is except firmly except silicon and concentration method and system |
| CN109851104A (en) * | 2019-02-21 | 2019-06-07 | 北京伟创力科技股份有限公司 | A kind of oil gas field high slat-containing wastewater processing method and equipment |
| CN113060885A (en) * | 2021-03-29 | 2021-07-02 | 大唐环境产业集团股份有限公司 | Resourceful treatment system and method for high-salinity wastewater |
| CN114000163A (en) * | 2021-11-30 | 2022-02-01 | 中国华能集团清洁能源技术研究院有限公司 | Salt-containing wastewater electrolytic hydrogen production system and working method thereof |
| CN114000163B (en) * | 2021-11-30 | 2024-05-28 | 中国华能集团清洁能源技术研究院有限公司 | Salt-containing wastewater electrolytic hydrogen production system and working method thereof |
| CN114163038A (en) * | 2021-12-22 | 2022-03-11 | 新华制药（寿光）有限公司 | Treatment process and treatment equipment for zero discharge of high-salt-content wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107381885A (en) | Zero-discharge process and equipment for treating high-salt-content wastewater | |
| CN105384300B (en) | A kind of method of multistage electrically-driven ion film process high slat-containing wastewater | |
| CN105000737B (en) | A kind of Industrial sewage treatment system and sewage water treatment method | |
| CN108203197B (en) | Processing system who contains salt waste water | |
| CN206570143U (en) | A kind of desulfurization wastewater is recycled and Zero discharging system | |
| CN101928089B (en) | Method for disposing antiosmosis thick water out of purified terephthalic acid refined waste water | |
| CN103979729A (en) | Desulfurization waste water recycling and zero discharge system and method | |
| CN108275820A (en) | Method for treating water | |
| WO2010122336A2 (en) | Water treatment | |
| CN103539288A (en) | Industrial wastewater recovery method and wastewater recovery system | |
| CN105439341A (en) | Salt-containing wastewater treatment system and treatment method | |
| CN109678280A (en) | A kind of thermal power plant's high-recovery recirculating water blowdown water desalting processing reclaiming system | |
| CN210528679U (en) | Mine water resourceful treatment recycling system | |
| CN107244773A (en) | Zero-discharge process and equipment for desulfurization wastewater treatment and recycling | |
| CN101857321A (en) | Method and equipment for treating and recycling reverse osmosis concentrated water and complex wastewater with high salt content | |
| CN205442916U (en) | Contain salt effluent disposal system | |
| RU2426699C1 (en) | Method of treating recycled water from metallurgical production | |
| CN102190393A (en) | Purified water production process with high recovery rate | |
| CN101863570B (en) | Heavy metal-containing wastewater treatment and reuse method and device | |
| CN206915894U (en) | High zero release equipment who contains salt waste water treatment | |
| CN102656122A (en) | Enhanced high water recovery membrane process | |
| CN107098526A (en) | The film concentrator and handling process of strong brine zero-emission sub-prime crystallization | |
| CN108793568A (en) | A kind of stainless steel cleaning containing acid wastewater zero discharge waste water unit equipment | |
| CN109095691A (en) | A kind of recycling processing method of brine waste | |
| CN107381889A (en) | A kind of circulating water treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171124 |