CN107777821A - CO is added in a kind of membrane filtration2Improve the method and device of production Water Sproading rate - Google Patents
CO is added in a kind of membrane filtration2Improve the method and device of production Water Sproading rate Download PDFInfo
- Publication number
- CN107777821A CN107777821A CN201711157310.4A CN201711157310A CN107777821A CN 107777821 A CN107777821 A CN 107777821A CN 201711157310 A CN201711157310 A CN 201711157310A CN 107777821 A CN107777821 A CN 107777821A
- Authority
- CN
- China
- Prior art keywords
- membrane
- water
- add
- solution
- sedimentation basin
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 131
- 239000012528 membrane Substances 0.000 title claims abstract description 80
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004062 sedimentation Methods 0.000 claims abstract description 48
- 239000000243 solution Substances 0.000 claims abstract description 40
- 238000005374 membrane filtration Methods 0.000 claims abstract description 23
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000001556 precipitation Methods 0.000 claims abstract description 14
- 239000006228 supernatant Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 8
- 239000007864 aqueous solution Substances 0.000 claims abstract description 5
- 238000005352 clarification Methods 0.000 claims abstract description 5
- 238000007781 pre-processing Methods 0.000 claims abstract description 5
- 238000001471 micro-filtration Methods 0.000 claims description 11
- 238000005189 flocculation Methods 0.000 claims description 10
- 230000016615 flocculation Effects 0.000 claims description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 7
- 239000000084 colloidal system Substances 0.000 claims description 7
- 229910052925 anhydrite Inorganic materials 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 6
- 239000005416 organic matter Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- 229920002125 Sokalan® Polymers 0.000 claims description 5
- 239000012267 brine Substances 0.000 claims description 5
- 239000003153 chemical reaction reagent Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 244000005700 microbiome Species 0.000 claims description 5
- 239000004584 polyacrylic acid Substances 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 5
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 4
- 230000001580 bacterial effect Effects 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- 239000012510 hollow fiber Substances 0.000 claims description 4
- 229920002521 macromolecule Polymers 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 3
- 238000005904 alkaline hydrolysis reaction Methods 0.000 claims description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 239000011976 maleic acid Substances 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 2
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims 1
- -1 polypropylene Polymers 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- 230000011218 segmentation Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000008676 import Effects 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 238000004064 recycling Methods 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 239000003643 water by type Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920006322 acrylamide copolymer Polymers 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical group [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000003831 deregulation Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M sodium bicarbonate Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003911 water pollution Methods 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
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- 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
- C02F1/44—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
-
- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
-
- 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses add CO in a kind of membrane filtration2The method and device of production Water Sproading rate is improved, the aqueous solution is entered in the presence of booster pump and enters pretreatment filtration system, the preprocessing solution of preprocessed filtration system generation enters intermediate water tank；Pass through CO2Closed add-on system injects CO to intermediate water tank2To adjust the pH value of solution in intermediate water tank, pH value is reduced to less than 8.32, and add antisludging agent formation condition solution；Condition solution is passed through NF/RO membrane components, production water after being handled by NF/RO membrane components is collected processing, concentrated water after being handled by NF/RO membrane components is reacted in the sedimentation basin of built-in heater, supernatant and precipitation solution are produced after standing clarification, circulating and recovering supernatant is mixed into pretreatment filtration system, precipitated liquid discharge system with booster pump water outlet.Present invention process main body and corollary equipment are compact-sized, multiple functional, and easily operated maintenance, arrangement mode can be with flexible combination.
Description
Technical field
The invention belongs to water-saving and emission-reducing technical field, and in particular to add CO in a kind of membrane filtration2Improve production Water Sproading rate
Method and device.
Background technology
Nanofiltration（NF）Film and counter-infiltration（RO）Film can have in water treatment procedure according to its pore size and stalling characteristic
Effect ground removes organic matter, algae, bacterium, pathogenic microorganism, inorganic colloid particle, heavy metal ion, nitric acid and Asia in feedwater
The pollutants such as nitrate, but exist during being somebody's turn to do such as fouling membrane and the production low important bottleneck problem of Water Sproading rate.NF film conducts
One new membrane separation technique, its pore diameter range between RO films and milipore filter, and NF films itself have it is charge（It is logical
Often show as bear electricity）, it has higher removing between 200-1000kDa organic matter to divalence and multivalent ion and molecular weight
Effect.At present, main NF separation mechanism of membrane has Screening theory, adsorption theory, dissolving-diffusion theory and electrical charge rejection theoretical
Deng.RO films can stop that all dissolubility salt and molecular weight are more than 100Da organic matter, but allow hydrone to pass through, and extensively should
For in brackish water desalination and desalinization, main separating mechanism include dissolving-diffusion, Preferential adsorption-pore stream it is theoretical and
Hydrogen bond theory etc..NF films and RO films are all pressure drive membranes, and concentrated water and production water are separated under the effect of outer add operation pressure.
In NF films and RO membrane separating process, the recycling efficiency of producing water be often it is relatively low and limited, this mainly by
It is formed on the durometer compound inorganic scale to be formed, such as Ca2+、Si2+、Ba2+、Mg2+Deng bivalent cation and CO3 2-、SO4 2-It is cloudy etc. divalence
Inorganic pollution caused by ion forms precipitation due to reasons such as concentration polarizations on film surface；The microorganisms such as bacterium, algae are in film table
Face forms group, while their secretion can also promote other organic matters to be adhered to film surface and then form film, finally lead
Cause more serious fouling membrane；Organic pollution, so as in film adsorption and block fenestra, enters one by the interaction with film
Step makes NF flux depressions, and operating cost rises.During NF films and RO film purified waters, the rate of recovery for producing water is typically in the range of
Between 40%-75%, the rate of recovery is depended primarily on into water physical property and NF concentrated water reuse amount.At the same time, substantial amounts of concentrated water is discharged into environment
Terminal can be caused to make sharply increasing for water cost.
Therefore, selection rationally effective pretreating process and optimize technique design, can effectively prevent or mitigate fouling membrane, prolong
The service life of long film, improve production Water Sproading rate.Before NF films and RO membrane filtrations, series of preprocessing technique include micro-filtration,
Ultrafiltration, ion exchange, degassing and adjustment pH value etc.；Or carry out the side such as advanced treating for the concentrated water after NF films and RO membrane filtrations
Method, it can effectively improve the production Water Sproading rate of NF films and RO films.So exist at present during NF films and RO water treatment by membrane
Concentrated water yield is big, production Water Sproading rate is low, does not meet the puzzlement of the industries such as clean manufacturing, in order to ensure the sustainable development of industry, grinds
For hair on the basis of ensureing to produce water quality, it is extremely important to effectively improve NF concentrated water reuse technology while mitigate the method for fouling membrane
's.Using pretreatment before NF films and RO membrane filtrations and concentrated water precipitation reuse after filtering（By adding CO2And NaHCO3Adjust solution
PH value, and then remove the hardness number of solution in sedimentation basin）Hydridization coupling operation process, can greatly improve production Water Sproading rate,
Reduce environmental pollution and increase economic efficiency.In NF films and the processing of RO film waters or field of water pollution control, related data-searching
Less than relevant addition CO2Improve the patent report of production Water Sproading rate.Publication number CN 101774731A patent discloses one kind and subtracted
Enhanced coagulation-air lift-film the integral method and device of light fouling membrane, add coagulant, flocculation aid and gas stripping type in raw water
Aerator, fouling membrane is not only alleviated, saves membrane module operation energy consumption, extend the membrane module cycle of operation, reduce cost of investment,
It is easy to implement flexibly.But the stripping step of this patented technology only relates to the aerating step of processing unit, it is intended to drives current to exist
Circulated and disturbed in membrane module, formed shear flow on film surface, the blocking of fenestra is reduced, so as to alleviate fouling membrane；Film
Concentrated water caused by separation is not handled further, so as to cause water resource waste, inadequate economical and effective.Publication number CN
106186550A patent discloses a kind of sewage recycling Zero emission device and method, realizes dominant cation, the moon in feedwater
Whole recovery of ion and the recycling of sludge, but by adding substantial amounts of highly acid during the patent technology implementation
Medicament adjusts the pH value of solution, and then causes the corrosion of subsequent pipeline, causes operating cost to improve, at the same exist device it is complicated and
The shortcomings of floor space is big.
The content of the invention
It is low and reduce simultaneously it is an object of the invention to solve the production Water Sproading rate in existing NF films and RO membrane separating process
Or the problem of decelerating membrane pollution, there is provided add CO in a kind of membrane filtration2The method and device of production Water Sproading rate is improved, was both improved
Water resource is enough reduced using horizontal and can makes water cost, and the hydridization being combined using pretreatment+membrane filtration+sedimentation basin couples work
Skill technology, system production Water Sproading rate is set to be up to more than 90%, so that the effectively amount of conserving water, realizes the regeneration of concentrated water, this work
Skill main body and corollary equipment are compact-sized, multiple functional, and easily operated maintenance, arrangement mode can be with flexible combination.
The present invention is adopted the following technical scheme that to solve above-mentioned technical problem, and CO is added in a kind of membrane filtration2Put forward high yield water
The method of the rate of recovery, it is characterised in that concretely comprise the following steps：
（1）Pending brine waste is sucked and is stored in intake pool as water inlet solution for later use；
（2）Enter the aqueous solution in the presence of booster pump and enter pretreatment filtration system, preprocessed filtration system is removed into water-soluble
The preprocessing solution generated after colloid, suspended particulate substance, bacterial micro-organism and macromolecule organic matter in liquid enters middle water
Case；
（3）Pass through CO2Closed add-on system injects CO to intermediate water tank2To adjust the pH value of solution in intermediate water tank, make pH value
Less than 8.32 are reduced to, and adds antisludging agent generation under bicarbonate breadth coefficient dramatically increases, carbonate breadth coefficient is notable
The condition solution of drop；
（4）Condition solution is sunk into NF/RO membrane components, the production water after being handled by NF/RO membrane components is collected processing, passes through
Concentrated water after NF/RO membrane components are handled is reacted in the sedimentation basin of built-in heater, is produced supernatant after standing clarification and is sunk
Shallow lake liquid, circulating and recovering supernatant are mixed into pretreatment filtration system, precipitated liquid discharge system, membrane filtration production with booster pump water outlet
Water Sproading rate reaches 80%-95%.
Further preferably, the pretreatment filtration system is micro-filtration filter, ultrafilter or more medium filter, is somebody's turn to do
Pretreatment filtration system is used to effectively remove to have into the colloid in the aqueous solution, suspended particulate substance, bacterial micro-organism and macromolecule
Machine thing.
Further preferably, in the intermediate water tank solution by adding CO2The pH value of adjusting film water inlet is reduced to 4.55-
8.32, carbonate breadth coefficient is remarkably decreased to less than 1.15%, is prevented by adding antisludging agent in NF films or RO film Surface Creations
For precipitation with decelerating membrane pollution, wherein antisludging agent is polyacrylic acid, EDTA, acrylic acid or acid/maleic acid copolymers.
Further preferably, the NF/RO membrane components water inlet pH value control is 4.55-8.32, wherein RO films water inlet pH value
In 7.50-8.50, salt rejection rate reaches highest, and according to producing water water quality needs, NF/RO membrane components are in one or more levels formula series connection row
Row are arranged in parallel in one or more snippets formula, and the NF films or RO films use rolling or hollow fiber composite membrane.
Further preferably, the concentrated water after NF/RO membrane components processing enters after sedimentation basin by successively into sedimentation basin
Addition precipitating reagent, flocculation aid and flocculant are reacted, and wherein precipitating reagent is CaCO3And CaSO4Powder, flocculation aid are aluminum sulfate
Or iron chloride, flocculant are polyacrylic acid and the alkaline hydrolysis thing or acrylic acid of polyacrylamide and the copolymer of acrylamide.
Add a small amount of precipitating reagent such as CaCO3And CaSO4Powder can quickly generating with role's induced precipitation of nucleus；Flocculation aid and
The addition of flocculant can act on the grain size for dramatically increasing depositing particles by chemical bonding, so as to accelerate sedimentation basin liquid to consolidate
The separation of two-phase；Inorganic or organic polymer flocculation aid can be formed by electric double layer pinch effect and Electrostatic Absorption effect
Precipitation flco of big particle diameter etc.；And on this basis, flocculant further functions as physical bind-mechanism effect.Due to inorganic
There is certain compatibility between cation and Flokal B, anionic flocculant is generally more desirable, such as polyacrylic acid
And the copolymer such as the alkaline hydrolysis thing or acrylic acid of polyacrylamide and acrylamide.
Further preferably, the solution in the sedimentation basin adjusts pH value to 10.0-11.5 by adding aqueous slkali, so that
It is co-precipitated in sedimentation basin, wherein Ba2+、Fe3+、Mn2+And Al3+Removed in corresponding low-level, Ca2+With CaCO3And CaSO4
Form remove, SiO2Or silicate is removed in the form of Si-Ca-Mg compound precipitations.
CO is added in membrane filtration of the present invention2Improve the device of production Water Sproading rate, it is characterised in that along water inlet direction
It is sequentially provided with intake pool, booster pump, pretreatment filtration system, intermediate water tank, NF/RO membrane components and the precipitation being connected by pipeline
Pond is formed, and wherein pretreatment filtration system is micro-filtration filter, ultrafilter or more medium filter, intermediate water tank top
Air inlet and CO2The escape pipe of closed add-on system is tightly connected, and NF/RO membrane components are in one or more levels formula arranged in series or are in
One or more snippets formula is arranged in parallel, and NF films or RO films use rolling or hollow fiber composite membrane, and heater is provided with sedimentation basin,
Supernatant in sedimentation basin is mixed into pretreatment filtration system by pipeline backflow and booster pump water outlet, the precipitation in sedimentation basin
Liquid passes through discharge of pipes.
Further preferably, the NF/RO membrane components are the NF membrane elements being arranged in parallel in two-stage type arranged in series or two-part
Part or RO membrane components.
Pass through CO in the present invention2Filling can reduce in NF/RO membrane component surface scales, compared to using H2SO4Or HCl
Adjust pH value, CO2Usual not corrosion pipeline and equipment, it need not be used as acid solution to store.CO2It is mainly used to adjust pH value of solution
It is worth and generation bicarbonate is provided in sedimentation basin, for next effective removal of hardness is prepared in sedimentation basin.Compared to use
Other sour de-regulation solution ph, add CO2Show more effectively low cost and environment friendly.
The present invention is by filling CO2Regulation solution ph is reduced to less than 8.32, if filled in open system, CO2Can
Air, inadequate economical and efficient can be escaped into, so CO will be completed in closed system2Add and correspondingly increase system simultaneously
Pressure, pressure increase will drive reaction equation（1）Move to the right, it is allowed to which pH value drops to required level.CO2It can also inject
In closed conduct between sedimentation basin and membrane filter unit, by reducing solution ph and also providing sufficient concentrations of heavy carbon simultaneously
Hydrochlorate () and carbonate (), prepared for sufficient precipitation reaction occurs in sedimentation basin.
| （1） |
Heater in the sedimentation basin can increase CO2Removal effect, NF films and RO films concentrated water enter sedimentation basin
Remove hardness and CO2, heating or decompression or both while the mode of operation carried out, principle such as reaction equation can be used（2）It is shown,
Above-mentioned condition will be more effectively HCO3 -It is changed into CO3 2-And CO2, and CO2It can volatilize and be collected after escaping for recycling profit
With, while the demand for increasing pH value in sedimentation basin to adding alkali number can also be reduced.
| （2） |
Described raising system production Water Sproading rate, refer to that for example NF/RO membrane components production Water Sproading rate is 80%, if used
CO is added in membrane filtration2Device, in pond to be precipitated after solid-liquid separation, then supernatant fluid reuse rate is 10%, then NF/RO membrane elements
The system production Water Sproading rate of part can further be promoted to 90%.The increase of system production Water Sproading rate in the device, it is heavy to depend on
Effective removal degree of hardness in the pond of shallow lake.
It is of the invention that there is following obvious advantageous characteristic compared with traditional brine waste handling process and device：
1st, compared with traditional handicraft and device, system production Water Sproading rate can be made to increase to 80%-95%, same phase from 40%-75%
Should the dense salt wastewater treatment capacity of ground reduction and processing cost；Add CO2To film filter, can significantly reduce solution ph and
Bicarbonate is provided in sedimentation basin, is effectively to remove hardness subsequently in sedimentation basin to prepare；
2nd, CO is completed in closed system2Add and correspondingly increase system pressure simultaneously, the CO that pressure increase will drive automatically2
Dissolving and the generation of bicarbonate, it is allowed to which pH value drops to required level automatically；
3、CO2Then recycling and secondary use can be collected by heating and depressurizing, so as to reduce the pollution to environment, compared
Use H2SO4Or HCl regulation pH value, CO2Filling can not only reduce fouling on film surface, and the technology does not corrode pipe
Road and equipment, it is not required that acid solution stores；
4th, present device is simple in construction, and the rate of recovery of system production water is high, and floor space is small, extend the Membrane cleaning cycle mitigate into
This, this technology has considerable economic benefit and environmental benefit.
Brief description of the drawings
Fig. 1 is that NF/RO membrane components are arranged in parallel in membrane filtration processes in two-part and add CO2Raising system produces Water Sproading rate
Process chart；
Fig. 2 is that NF/RO membrane components are in add CO in two-stage type arranged in series membrane filtration processes2Raising system produces the work of Water Sproading rate
Skill flow chart.
In figure：1st, intake pool, 2, booster pump, 3, ultrafilter, 31, micro-filtration filter, 4, intermediate water tank, 5, CO2It is close
Close add-on system, 6, one sections of NF/RO membrane components, 61, one-level NF/RO membrane components, 7, two sections of NF/RO membrane components, 71, two level NF/
RO membrane components, 8, sedimentation basin, 9, heater.
Embodiment
The above of the present invention is described in further detail by the following examples, but this should not be interpreted as to this
The scope for inventing above-mentioned theme is only limitted to following embodiment, and all technologies realized based on the above of the present invention belong to this hair
Bright scope.The present invention is described in detail by way of example and in conjunction with the accompanying drawings.
Referring to the drawings 1-2, CO is added in membrane filtration processes of the invention2Raising system produces the device of Water Sproading rate, in Fig. 1
Including intake pool 1, booster pump 2, ultrafilter 3, intermediate water tank 4, CO2Closed 5, one sections of NF/RO membrane modules 6 of add-on system,
Two sections of NF/RO membrane modules 7, sedimentation basin 8 and heater 9, the outlet of intake pool 1 are connected with the import of booster pump 2, booster pump 2
Outlet be connected with the import of ultrafilter 3, the outlet of ultrafilter 3 is connected with the import of intermediate water tank 4, CO2It is closed
The escape pipe of add-on system 5 is tightly connected with the air inlet of intermediate water tank 4, the outlet of intermediate water tank 4 and one section of NF/RO membrane component
6 import connection, one section of NF/RO membrane component 6 generate one section of NF/RO films production water, one section of NF/RO films production water and two sections of NF/RO films
The import connection of element 7, two sections of NF/RO membrane components 7 generate two sections of NF/RO films production water, and two sections of NF/RO films concentrated waters export and one section
Import of the NF/RO films concentrated water outlet respectively with sedimentation basin 8 is connected, and after the heated device 9 of the solution in sedimentation basin 8 heats, is stood
For a period of time, a part of supernatant in sedimentation basin 8 is back to ultrafilter 3 by pipeline, and a part of precipitated liquid is led to for clarification
Piping is discharged.
Fig. 2 includes intake pool 1, booster pump 2, micro-filtration filter 31, intermediate water tank 4, CO2Closed add-on system 5, one-level
NF/RO membrane components 61, two level NF/RO membrane components 71, sedimentation basin 8 and heater 9, the outlet of intake pool 1 and entering for booster pump 2
Mouth connection, the outlet of booster pump 2 are connected with the import of micro-filtration filter 31, outlet and the intermediate water tank 4 of micro-filtration filter 31
Import connects, CO2The escape pipe of closed add-on system 5 is tightly connected with the air inlet of intermediate water tank 4, the outlet of intermediate water tank 4
Import with one-level NF/RO membrane components 61 is connected, and one-level NF/RO membrane components 61 generate one-level NF/RO films production water, one-level NF/RO
Film production water is connected with the import of two level NF/RO membrane components 71, and two level NF/RO membrane components 71 generate two level NF/RO films production water, two level
The concentrated water of NF/RO membrane components 61 exports the import exported with the concentrated water of one-level NF/RO membrane components 71 respectively with sedimentation basin 8 and is connected, and precipitates
After the heated device 9 of solution heats in pond 8, clarification a period of time is stood, a part of supernatant in sedimentation basin 8 is back to micro-filtration
Filter 31, a part of precipitated liquid are discharged by pipeline.
Embodiment 1
As shown in figure 1, the higher brine waste of concentration in intake pool is directly sunk into ultrafilter by booster pump, by super
Filter technology removes suspended solid, colloid and some larger molecular organicses, and pretreated production water enters intermediate water tank, closed addition
CO2PH value is reduced to 7.55, while adds antisludging agent acid/maleic acid copolymers, prevents film surface fouling, the condition solution passes through
The RO films production water of one section of RO membrane components generation enters two sections of RO membrane components, carries out the production water of the two level RO films after advanced treating and is received
Collection, wherein the production Water Sproading rate of two sections of RO membrane components reaches 60%；It is heavy that two sections of RO films concentrated waters enter after being mixed with one section of RO film concentrated water
Shallow lake pond, flocculation aid and flocculant aluminum sulfate, polyacrylic acid are added in sedimentation basin, for increasing the particle size of sediment and adding
Fast separation of solid and liquid process, it is 11.0 to add alkali regulation sedimentation basin solution ph, is co-precipitated, some ions such as Ba2+、Fe3+、Mn2 +、Al3+Dozens of or tens ppm, the CO of addition can be reduced to Deng the concentration in sedimentation basin solution2Ca can be made2+Ion with
CaCO3And CaSO4Form remove, SiO2, can by heating or silicate is removed in the form of Si-Ca-Mg compound precipitations
More effectively by HCO3 -It is changed into CO3 2-And CO2, therefore CO2Can be volatilized effusion, escape the CO of system2It is used to follow again after collection
Ring and secondary use, while sedimentation basin solution adds alkali to increasing amount needed for pH value can also be reduced.Generated in sedimentation basin
Supernatant carries out circular treatment after being combined with water inlet, so as to which additionally increase production Water Sproading rate is 24% so that system produces Water Sproading rate
Up to 84% and without film surface scaling fouling risk.
Embodiment 2
As shown in Fig. 2 the relatively low brine waste of concentration in intake pool is intake sinks micro-filtration filter by booster pump, by micro-
Filter technology or multimedium sand coarse aggregate ratio etc. remove suspended solid, colloid and some larger molecular organicses, are injected in pretreated solution
CO2PH is adjusted to 6.58, while adds antiscale HEDP to prevent film surface fouling, the condition solution is generated by one-level NF membrane components
One-level NF films produce water, and one-level NF films concentrated water enters two level NF membrane components generation second segment NF film production water, the production of two-stage NF membrane components
Water Sproading rate is 75%, and two level NF films concentrated water enters sedimentation basin, and flocculation aid and flocculant are added in sedimentation basin（Ferric trichloride and
Acrylamide copolymer）Increase sediment particle size and accelerate separation of solid and liquid, add alkali regulation sedimentation basin in solution ph be
11.5, it is co-precipitated, some ions such as Ba2+、Fe3+、Mn2+、Al3+Concentration of the plasma in sedimentation basin solution can be reduced to
Dozens of or tens ppm, the CO of addition2Ca can be made2+With CaCO3And CaSO4Form remove, SiO2Or silicate is with Si-
The form of Ca-Mg compound precipitations removes, can be more effectively by HCO by decompression3 -It is changed into CO3 2-And CO2, therefore CO2Can be with
Volatilization effusion, escape the CO of system2Then recycling can be collected, while can also be reduced in sedimentation basin solution to increase
PH value is to the required required amount for adding alkali.The supernatant generated in sedimentation basin carries out circular treatment after being combined with water inlet, so as to volume
Outer increase production Water Sproading rate is 16.8% so that system production Water Sproading rate be up to 91.7% and without film surface scaling fouling risk.
Have been shown and described above the general principle of the present invention, principal character and advantage, do not depart from spirit of the invention and
On the premise of scope, the present invention also has various changes and modifications, and these changes and improvements both fall within claimed invention
Scope.
Claims (8)
1. add CO in a kind of membrane filtration2The method for improving production Water Sproading rate, it is characterised in that concretely comprise the following steps：
（1）Pending brine waste is sucked and is stored in intake pool as water inlet solution for later use；
（2）Enter the aqueous solution in the presence of booster pump and enter pretreatment filtration system, preprocessed filtration system is removed into water-soluble
The preprocessing solution generated after colloid, suspended particulate substance, bacterial micro-organism and macromolecule organic matter in liquid enters middle water
Case；
（3）Pass through CO2Closed add-on system injects CO to intermediate water tank2To adjust the pH value of solution in intermediate water tank, drop pH value
As little as less than 8.32, and add antisludging agent generation bicarbonate breadth coefficient is dramatically increased, carbonate breadth coefficient is remarkably decreased
Condition solution；
（4）Condition solution is sunk into NF/RO membrane components, the production water after being handled by NF/RO membrane components is collected processing, passes through
Concentrated water after NF/RO membrane components are handled is reacted in the sedimentation basin of built-in heater, is produced supernatant after standing clarification and is sunk
Shallow lake liquid, circulating and recovering supernatant are mixed into pretreatment filtration system, precipitated liquid discharge system, membrane filtration production with booster pump water outlet
Water Sproading rate reaches 80%-95%.
2. add CO in membrane filtration according to claim 12The method for improving production Water Sproading rate, it is characterised in that：It is described pre-
Processing filtration system is micro-filtration filter, ultrafilter or more medium filter, and the pretreatment filtration system is used to effectively go
Remove into the colloid in the aqueous solution, suspended particulate substance, bacterial micro-organism and macromolecule organic matter.
3. add CO in membrane filtration according to claim 12The method for improving production Water Sproading rate, it is characterised in that：In described
Between in water tank solution by adding CO2The pH value of adjusting film water inlet is reduced to 4.55-8.32, and carbonate breadth coefficient is remarkably decreased
To less than 1.15%, prevented by adding antisludging agent in NF films or RO films Surface Creation precipitation with decelerating membrane pollution, wherein antisludging agent
For polyacrylic acid, EDTA, acrylic acid or acid/maleic acid copolymers.
4. add CO in membrane filtration according to claim 12The method for improving production Water Sproading rate, it is characterised in that：It is described
The water inlet pH value control of NF/RO membrane components is 4.55-8.32, and the wherein water inlet pH value of RO films salt rejection rate in 7.50-8.50 reaches
Highest, according to producing water water quality needs, NF/RO membrane components are in parallel in one or more levels formula arranged in series or in one or more snippets formula
Arrangement, the NF films or RO films use rolling or hollow fiber composite membrane.
5. add CO in membrane filtration according to claim 12The method for improving production Water Sproading rate, it is characterised in that：It is described
Concentrated water after the processing of NF/RO membrane components enters after sedimentation basin by adding precipitating reagent, flocculation aid and flocculation into sedimentation basin successively
Agent is reacted, and wherein precipitating reagent is CaCO3And CaSO4Powder, flocculation aid are aluminum sulfate or iron chloride, and flocculant is polypropylene
Acid and the alkaline hydrolysis thing or acrylic acid of polyacrylamide and the copolymer of acrylamide.
6. add CO in membrane filtration according to claim 12The method for improving production Water Sproading rate, it is characterised in that：It is described heavy
Solution in the pond of shallow lake adjusts pH value to 10.0-11.5 by adding aqueous slkali, so that be co-precipitated in sedimentation basin, wherein
Ba2+、Fe3+、Mn2+And Al3+Removed in corresponding low-level, Ca2+With CaCO3And CaSO4Form remove, SiO2Or silicate
Removed in the form of Si-Ca-Mg compound precipitations.
7. add CO in a kind of membrane filtration2Improve the device of production Water Sproading rate, it is characterised in that：It is sequentially provided with along water inlet direction logical
The connected intake pool of piping, booster pump, pretreatment filtration system, intermediate water tank, NF/RO membrane components and sedimentation basin are formed, its
Middle pretreatment filtration system is micro-filtration filter, ultrafilter or more medium filter, the air inlet on intermediate water tank top with
CO2The escape pipe of closed add-on system is tightly connected, and NF/RO membrane components are in one or more levels formula arranged in series or in one section or more
Segmentation is arranged in parallel, and NF films or RO films use rolling or hollow fiber composite membrane, is provided with heater in sedimentation basin, in sedimentation basin
Supernatant pretreatment filtration system is mixed into booster pump water outlet by pipeline backflow, the precipitated liquid in sedimentation basin passes through pipe
Discharge in road.
8. add CO in membrane filtration according to claim 72Improve the device of production Water Sproading rate, it is characterised in that：It is described
NF/RO membrane components are the NF membrane components or RO membrane components being arranged in parallel in two-stage type arranged in series or two-part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711157310.4A CN107777821A (en) | 2017-11-20 | 2017-11-20 | CO is added in a kind of membrane filtration2Improve the method and device of production Water Sproading rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711157310.4A CN107777821A (en) | 2017-11-20 | 2017-11-20 | CO is added in a kind of membrane filtration2Improve the method and device of production Water Sproading rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107777821A true CN107777821A (en) | 2018-03-09 |
Family
ID=61429908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711157310.4A Pending CN107777821A (en) | 2017-11-20 | 2017-11-20 | CO is added in a kind of membrane filtration2Improve the method and device of production Water Sproading rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107777821A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013091129A1 (en) * | 2011-12-19 | 2013-06-27 | General Electric Company | Membrane filtration process for industrial process water treatment and recovery |
| US20130248445A1 (en) * | 2010-09-30 | 2013-09-26 | Sijing Wang | Membrane filtration process with high water recovery |
| CN106745981A (en) * | 2016-12-15 | 2017-05-31 | 青岛锦龙弘业环保有限公司 | A kind of system and method for high-salt wastewater treatment for reuse |
| CN207552098U (en) * | 2017-11-20 | 2018-06-29 | 河南师范大学 | The device that CO2 puies forward the high yield water rate of recovery is added in a kind of membrane filtration |
-
2017
- 2017-11-20 CN CN201711157310.4A patent/CN107777821A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130248445A1 (en) * | 2010-09-30 | 2013-09-26 | Sijing Wang | Membrane filtration process with high water recovery |
| WO2013091129A1 (en) * | 2011-12-19 | 2013-06-27 | General Electric Company | Membrane filtration process for industrial process water treatment and recovery |
| TW201331131A (en) * | 2011-12-19 | 2013-08-01 | Gen Electric | A membrane filtration process for industrial process water treatment and recovery |
| CN106745981A (en) * | 2016-12-15 | 2017-05-31 | 青岛锦龙弘业环保有限公司 | A kind of system and method for high-salt wastewater treatment for reuse |
| CN207552098U (en) * | 2017-11-20 | 2018-06-29 | 河南师范大学 | The device that CO2 puies forward the high yield water rate of recovery is added in a kind of membrane filtration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kavitha et al. | Pretreatment processes for seawater reverse osmosis desalination systems—A review | |
| CN102826686B (en) | Double-membrane treatment method of iron and steel industrial wastewater | |
| CN102417253B (en) | In-depth treatment zero-discharge recovery equipment for heavy metal waste water | |
| CN103408193B (en) | Process for preparing desalted water for iron and steel plants with slightly polluted surface water as water source | |
| CN102838227A (en) | System and method for treating industrial park recycled water to form power plant boiler supplemental water | |
| CN100513334C (en) | Deep treatment process of metallurgical sewage | |
| CN107253798A (en) | A kind of advanced treatment and reclamation group technology of wastewater of steel industry | |
| CN111285531A (en) | Method and system for concentrating high-salinity mine water | |
| CN109678280A (en) | A kind of thermal power plant's high-recovery recirculating water blowdown water desalting processing reclaiming system | |
| CN104445706A (en) | Method for concentrating high-concentration brine | |
| CN104118956A (en) | Method for treating sewage | |
| CN109455849A (en) | Bi-membrane method recycled water advanced treatment based on control membrane fouling improves technique and device | |
| CN108328836B (en) | Water inlet control system based on high-salt-content wastewater reduction process | |
| CN105399249B (en) | A kind of device and method of municipal wastewater advanced treating | |
| CN106746057A (en) | The boiler feedwater processing method and its device of a kind of high yield water rate | |
| CN202729926U (en) | System for treating recycled water of industrial park into make-up water for boiler of power plant | |
| CN206529357U (en) | A kind of boiler feed water processing unit of high yield water rate | |
| CN206437968U (en) | A kind of system of high-salt wastewater treatment for reuse | |
| CN103566762A (en) | Immersion type ultra-filtration system | |
| CN207552098U (en) | The device that CO2 puies forward the high yield water rate of recovery is added in a kind of membrane filtration | |
| CN202576135U (en) | Device for producing drinking water through coal mine water | |
| CN109422383A (en) | A kind of Treated sewage reusing treatment process | |
| CN112028273A (en) | High-recovery-rate reclaimed water recycling advanced treatment system and treatment method | |
| CN202265468U (en) | Equipment for deeply treating and recovering heavy metal waste water with zero discharge | |
| CN105948291A (en) | Titanium-dioxide low-salt-waste-water recycling device and recycling method for low-salt waste water |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |
|
| WD01 | Invention patent application deemed withdrawn after publication |