CN108423907A - Haline water Zero discharge treatment method and its device - Google Patents
Haline water Zero discharge treatment method and its device Download PDFInfo
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- CN108423907A CN108423907A CN201810239565.3A CN201810239565A CN108423907A CN 108423907 A CN108423907 A CN 108423907A CN 201810239565 A CN201810239565 A CN 201810239565A CN 108423907 A CN108423907 A CN 108423907A
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- water
- film
- nanofiltration
- discharge treatment
- haline
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 192
- 229910001868 water Inorganic materials 0.000 title claims abstract description 192
- 208000028659 discharge Diseases 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 63
- 238000001728 nano-filtration Methods 0.000 claims abstract description 53
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 50
- 239000002253 acid Substances 0.000 claims abstract description 41
- 239000012528 membrane Substances 0.000 claims abstract description 29
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 24
- 239000011780 sodium chloride Substances 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 150000003839 salts Chemical class 0.000 claims abstract description 20
- 239000003513 alkali Substances 0.000 claims abstract description 16
- 238000010612 desalination reaction Methods 0.000 claims abstract description 14
- 239000013078 crystal Substances 0.000 claims abstract description 13
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 12
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims abstract description 12
- 230000008014 freezing Effects 0.000 claims abstract description 9
- 238000007710 freezing Methods 0.000 claims abstract description 9
- 239000000347 magnesium hydroxide Substances 0.000 claims abstract description 9
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims abstract description 9
- 238000011033 desalting Methods 0.000 claims abstract description 6
- WBZKQQHYRPRKNJ-UHFFFAOYSA-L disulfite Chemical group [O-]S(=O)S([O-])(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-L 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 37
- 238000001223 reverse osmosis Methods 0.000 claims description 37
- 238000004062 sedimentation Methods 0.000 claims description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 16
- 150000001768 cations Chemical class 0.000 claims description 14
- 238000000909 electrodialysis Methods 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000012452 mother liquor Substances 0.000 claims description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 11
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- 238000005262 decarbonization Methods 0.000 claims description 7
- 238000007872 degassing Methods 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 238000002425 crystallisation Methods 0.000 claims description 5
- 230000008025 crystallization Effects 0.000 claims description 5
- 239000013505 freshwater Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000009834 vaporization Methods 0.000 claims description 4
- 230000008016 vaporization Effects 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 229920002301 cellulose acetate Polymers 0.000 claims description 2
- 229910052878 cordierite Inorganic materials 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 2
- 235000012489 doughnuts Nutrition 0.000 claims description 2
- 239000012510 hollow fiber Substances 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 claims 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims 1
- 238000000502 dialysis Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- 230000008595 infiltration Effects 0.000 claims 1
- 238000001764 infiltration Methods 0.000 claims 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims 1
- 238000000746 purification Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 11
- 239000012141 concentrate Substances 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- 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 7
- 238000001704 evaporation Methods 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- 229910052708 sodium Inorganic materials 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 229960004424 carbon dioxide Drugs 0.000 description 5
- 238000005188 flotation Methods 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 238000009776 industrial production Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 229920000554 ionomer Polymers 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 239000012492 regenerant Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OXIKLRTYAYRAOE-CMDGGOBGSA-N (e)-3-(1-benzyl-3-pyridin-3-ylpyrazol-4-yl)prop-2-enoic acid Chemical compound N1=C(C=2C=NC=CC=2)C(/C=C/C(=O)O)=CN1CC1=CC=CC=C1 OXIKLRTYAYRAOE-CMDGGOBGSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- -1 basicity Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002699 waste material Substances 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
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
- C01D3/06—Preparation by working up brines; seawater or spent lyes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/041—Treatment of water, waste water, or sewage by heating by distillation or evaporation by means of vapour compression
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- 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
-
- 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)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to water treatment field, specifically a kind of haline water Zero discharge treatment method and its device, method include the following steps：1）Add alkali into haline water, calcium carbonate and magnesium hydroxide are formed, partly precipitated object or suspended matter are removed, then passes through first order ceramics film device and filters, first order ceramics film device, which produces after water acid adding adjusts PH, enters film desalter progress desalting processing, the production water reuse after desalination；2）Ceramic membrane filter is carried out for the second time plus after alkali, and production water enters nanofiltration device after acid adding adjusts PH；3）The production water of nanofiltration device is mainly sodium chloride solution, and sodium chloride solution forms sodium chloride crystal salt, used as Nacl after treatment；4）The concentrated water main component of nanofiltration device is metabisulfite solution, is crystallized after freezing and forms saltcake.The present invention not only makes the water of purification obtain reuse, also achieves sodium chloride and saltcake that the salt in water is prepared into technical grade.
Description
Technical field
The present invention relates to water treatment field, specifically a kind of haline water Zero discharge treatment method and its device.
Background technology
Haline water is that surface water, underground water or other all kinds of water pass through film concentration, ion exchange regenerant, cleaning equipment or steaming
Send out formed high saliferous, high rigidity water, be mainly derived from circulating sewage, reverse osmosis concentrated water, ion exchange regenerant water and its
The condensed water of its desalter, not only saliferous is high, hardness is high for such waste water, also contains partial organic substances, algae and microorganism,
Also containing part fungicide, corrosion inhibiting and descaling agent and the oil pollution of leakage in circulating sewage.
As national environmental protection policy requirements are increasingly stringenter, the final processing mode of such waste water not only wants reuse, and
It realizes zero-emission, to realize that zero-emission will high power concentration and evaporation process.
Existing processing mode is first to concentrate 10 times or more with embrane method, processing is then evaporated, in existing zero-emission
There are following problems in technique：1. when using embrane method concentration, the water after adding alkali reaction is directly entered ceramic membrane by part company
It is filtered, because of the part, water contains a large amount of calcium carbonate and magnesium hydroxide suspended particulate, is liable to stick to ceramic membrane surface, pipe
The inner surface of road valve and water pump influences the normal operation of ceramic membranous system, reduces the flux of ceramic membrane, increases equipment throwing
Money and operating cost.2. haline water is after high power concentrates, the COD in water, the impurity such as silica, basicity, hardness all can be same
Step concentration, part company remove hardness in the concentrated water after reverse osmosis or electrodialysis concentrates with the mode that sodium ionomer resin softens,
Sodium ionomer resin softening can only remove hardness and cannot remove the impurity such as basicity, silica, COD, through subsequent concentration equipment
These impurity can be all entrained in crystal salt after concentration and evaporation process, so that crystal salt is become solid waste, or even become dangerous waste, made water
Pollution becomes solid pollution, becomes environmentally friendly difficult point.3. after dividing salt using nanofiltration, nanofiltration concentrated water is back to system by part company
Starting point, this will make partial impurities form endless loop in system, and the pollutants such as COD the more will recycle the more more, influence system just
Often operation and subsequent product quality.
Invention content
The technical problem to be solved by the present invention is to overcome the defects of the prior art, provide a kind of haline water zero discharge treatment side
Method and its device.
In order to solve the above technical problem, the present invention provides the following technical solutions：
A kind of haline water Zero discharge treatment method, includes the following steps：
1）Into haline water plus alkali generates chemical reaction, forms calcium carbonate and magnesium hydroxide, removes partly precipitated object or suspended matter,
Then pass through first order ceramics film device filter, first order ceramics film device produce water acid adding adjust PH after enter film desalter into
Row desalting processing, the production water reuse after desalination.Most hardness, alkali can be removed after the filtering of first order ceramics film device
Degree, silica and COD, but certain impurity is still remained in water, after subsequent film desalter concentrates 5-10 times, firmly
The impurity such as degree, basicity, COD and silica have different degrees of concentration again.
2）Enter reaction tank again plus after alkali into the concentrated water of film desalter, form calcium carbonate and magnesium hydrate precipitate,
Partly precipitated object or suspended matter are removed, is then filtered by second level ceramics film device, most hardness, alkali can be removed
Degree, COD and silica.Second level ceramics film device production water enters nanofiltration device after acid adding adjusts PH.
3）The production water of nanofiltration device is mainly sodium chloride solution, and sodium chloride solution, which enters film condensing device, to carry out at concentration
Reason, film condensing device fresh water reuse, concentrated water enter weak acid cation bed and further remove hardness, and the water outlet of weak acid cation bed enters decarbonization device
Carbon removal treatment is carried out, the production water after deviating from carbon dioxide enters evaporator, and sodium chloride crystal salt, chlorination are formed through evaporative crystallization
Sodium crystal salt uses after drying process as Nacl.
4）The concentrated water main component of nanofiltration device is metabisulfite solution, is crystallized after the solution is chilled and forms saltcake from water
It is precipitated, mother liquor produces water reuse after reverse osmosis concentration, and concentrated water enters flue vaporization or mixes grey processing.
Step 1）With step 2）In plus alkali refer to be added sodium hydroxide, sodium hydroxide and sodium carbonate combination or hydrogen
The combination of calcium oxide and sodium carbonate, step 1）With step 2）In acid adding refer to that hydrochloric acid or sulfuric acid is added.
Step 1）With step 2）Middle to be gone out partly precipitated object or suspended matter using sedimentation basin or flotation tank, flotation tank is selected
One kind in air-dissolving air-float pond, aeration flotation tank, precipitation-air-flotation all-in-one machine or floating upper settling tank.
A kind of haline water Zero discharge treatment method progress haline water zero discharge treatment device, including the first reaction tank, first
Reaction tank connects the first adder-subtractor, the first sedimentation basin that the output end connection of the first reaction tank is set gradually, the first water tank, the
One descaler and the first booster pump, the first booster pump connect first order ceramics film device, first order ceramics film device connection first
Water producing tank, the first water producing tank connect the second booster pump, film desalter and the concentrated water case set gradually, and the second booster pump is de- with film
The first means for feeding acid is equipped between salt device, concentrated water case connects the second reaction tank, and the second reaction tank connects the second adder-subtractor, the
The output end of two reaction tanks connects the second sedimentation basin, the second water tank, the second descaler and the third booster pump set gradually, third
Booster pump connects second level ceramics film device, and second level ceramics film device connects the second water producing tank, and the second water producing tank connects successively
The 4th booster pump and nanofiltration device being arranged are equipped with the second means for feeding acid, nanofiltration device between the 4th booster pump and nanofiltration device
It produces water end (W.E.) and connects film condensing device, film condensing device connects weak acid cation bed, decarbonization device and the evaporator set gradually, and nanofiltration is dense
Water end (W.E.) connects nanofiltration concentrated water case, delivery pump, freezing and crystallizing device, mother liquor case and the reverse osmosis unit set gradually.
Described first ceramic film device and the second ceramic film device select tubular type, multichannel, doughnut, flat or circle
One kind in disc type.
Ceramic membrane material used in described first ceramic film device and the second ceramic film device is aluminium oxide, zirconium oxide, oxygen
Change one kind in titanium, silicon carbide, kaolin or cordierite.
First sedimentation basin and the second sedimentation basin select tube settling, sloping plate deposition, clarifying basin, high dense settling pond or
One kind in horizontal sedimentation tank.
The film desalter selects one kind in electrodialysis, reverse osmosis, nanofiltration or the reverse osmosis combination with nanofiltration.
The rate of recovery of the film desalter is between 50%-95%, preferably 80-90%；The salt rejection rate of film desalter
Between 50%-98%, preferably 70-90%.
The NF membrane of the nanofiltration device selects one kind in rolling, tubular type, dish tubular type or hollow fiber form, NF membrane
One kind in material selection polyamide, cellulose acetate or silica gel.
The film condensing device selects reverse osmosis, electrodialysis or electrodialysis and one kind in reverse osmosis combination.
The rate of recovery of film condensing device is between 50%-90%, preferably 75-85%.
The decarbonization device selects one kind in decarbonizing tower or degassing film.
Between the ceramic membrane filter precision of first ceramic film device and the second ceramic film device is 20 nanometers -20 microns.
First descaler and the second descaler select one in electronic scale remover, ultrasound wave descaling instrument or magnetic descaler
Kind, the setting of descaler can prevent the fouling in ceramic membrane surface and pipeline.
The evaporator selects single effect evaporation, multiple-effect evaporation or MVR evaporators.
The advantageous effect that is reached of the present invention is：
1. the method using the present invention not only makes the water of purification obtain reuse after the device of the invention is handled, also real
Sodium chloride and saltcake that the salt in water is prepared into technical grade are showed, have made water and salt that can get utilization, while is maximum
Limit mitigates pollution, the investment for reducing ceramic membrane equipment and the operating cost of film, improves industrial salt quality.
2. increasing sedimentation basin or flotation tank before ceramic film device, and installation descaler equipment, make ceramic membrane equipment
Service life increases 2 times or more, and the investment of ceramic membrane equipment and operating cost reduce 50% or more.
3. removing the impurity such as hardness and COD using the technique that two-stage adds alkali to be combined with ceramic membrane filter, that is, protect film
Enrichment facility improves the product quality of final industrial grade sodium chloride and saltcake again.
4. sodium chloride and sodium sulphate can be detached using nanofiltration device isolation technics, and can remove the impurity such as COD.
5. removing hardness using weak acid cation bed before evaporator, after decarbonization device removes removing carbon dioxide, can prevent from evaporating
Device fouling, while impurity content in the industrial grade sodium chloride of output being made to reduce by 20% or more.
6. nanofiltration concentrated water uses the method for freezing and crystallizing, technical grade saltcake can be crystallized out, it is more that COD etc. is enriched in mother liquor
Kind impurity, after reverse osmosis or DTRO concentrations, impurity surplus surplus only has the 3 ‰ of stoste.
Description of the drawings
Attached drawing is used to provide further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention two.
In figure：1, the first reaction tank, the 2, first adder-subtractor, the 3, first sedimentation basin, the 4, first water tank, the 5, first scale removal
Instrument, the 6, first booster pump, 7, first circulation pump, 8, first order tubular ceramic film device, the 9, first water producing tank, the 10, second supercharging
Pump, the 11, first means for feeding acid, 12, Reverse Osmosis Desalination Process Equipment, 13, concentrated water case, the 14, second reaction tank, the 15, second adder-subtractor,
16, the second sedimentation basin, the 17, second water tank, the 18, second descaler, 19, third booster pump, 20, second circulation pump, 21, the second level
Tubular ceramic film device, the 22, second water producing tank, the 23, the 4th booster pump, the 24, second means for feeding acid, 25, nanofiltration device, 26,
One reverse osmosis unit, 27, electrodialysis plant, 28, weak acid cation bed, 29, degassing film device, 30, evaporator, 31, nanofiltration concentrated water case,
32, delivery pump, 33, freezing and crystallizing device, 34, mother liquor case, the 35, second reverse osmosis unit, the 36, first membrane cisterna, 37, the first order it is flat
Plate ceramics film device, the 38, first suction pump, the 39, second membrane cisterna, 40, second level flat ceramic film device, the 41, second suction pump.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
A kind of haline water Zero discharge treatment method, includes the following steps：
1）Into haline water plus alkali generates chemical reaction, forms calcium carbonate and magnesium hydroxide, removes partly precipitated object or suspended matter,
Then pass through first order ceramics film device filter, first order ceramics film device produce water acid adding adjust PH after enter film desalter into
Row desalting processing, the production water reuse after desalination；
2）Enter reaction tank again plus after alkali into the concentrated water of film desalter, form calcium carbonate and magnesium hydrate precipitate, removes
Then partly precipitated object or suspended matter are filtered by second level ceramics film device, second level ceramics film device produces water through acid adding tune
Enter nanofiltration device after saving PH；
3）The production water of nanofiltration device is mainly sodium chloride solution, and sodium chloride solution enters film condensing device and carries out concentration, film
Enrichment facility fresh water reuse, concentrated water enter weak acid cation bed and further remove hardness, and the water outlet of weak acid cation bed enters decarbonization device and carries out
Carbon removal treatment, the production water after deviating from carbon dioxide enter evaporator, and sodium chloride crystal salt, sodium chloride knot are formed through evaporative crystallization
Brilliant salt uses after drying process as Nacl；
4）The concentrated water main component of nanofiltration device is metabisulfite solution, and the chilled rear crystallization of the solution forms saltcake and analysed from water
Go out, mother liquor produces water reuse after reverse osmosis concentration, and concentrated water enters flue vaporization or mixes grey processing.
Embodiment one：
As shown in Figure 1, a kind of haline water zero discharge treatment device, including the first reaction tank 1, the first reaction tank 1 connection first add
Alkali device 2.First reaction tank 1 output end connection set gradually the first sedimentation basin 3, the first water tank 4, the first descaler 5 and
First booster pump 6, the first booster pump 6 connect first circulation pump 7, and first circulation pump 7 connects first order tubular ceramic film device 8,
First order tubular ceramic film device 8 connects the first water producing tank 9.It is the second booster pump 10 that the connection of first water producing tank 9 is set gradually, anti-
Osmosis desalination unit 12 and concentrated water case 13 are equipped with the first means for feeding acid between second booster pump 10 and Reverse Osmosis Desalination Process Equipment 12
11, concentrated water case 13 connects the second reaction tank 14.Second reaction tank 14 connects the second adder-subtractor 15, the output of the second reaction tank 14
The second sedimentation basin 16, the second water tank 17, the second descaler 18 and the third booster pump 19 that end connection is set gradually, third booster pump
19 connection second circulation pumps 20,20 connection second level tubular ceramic film device 21 of second circulation pump, second level tubular ceramic membrane dress
21 the second water producing tanks of connection 22 are set, the 4th booster pump 23 and nanofiltration device 25 that the connection of the second water producing tank 22 is set gradually, the 4th
The second means for feeding acid 24 is equipped between booster pump 23 and nanofiltration device 25.Nanofiltration device 25 produces first that water end (W.E.) connection is set gradually
Reverse osmosis unit 26, electrodialysis plant 27, electrodialysis plant 27 connect set gradually weak acid cation bed 28, degassing film device 29 and
Evaporator 30.25 concentrated water end of nanofiltration device connection set gradually nanofiltration concentrated water case 31, delivery pump 32, freezing and crystallizing device 33,
Mother liquor case 34 and the second reverse osmosis unit 35.
The course of work of the present invention is as follows：
Salt content is 2500ppm by the first step, and flow is that 100m3/h circulating sewages are sent into the first reaction tank 1, with first
Sodium hydroxide and sodium carbonate is added in adder-subtractor 2, is stirred to react 60 minutes, forms calcium carbonate and magnesium hydroxide crystal, the mixing
Liquid flows automatically in the first sedimentation basin 3, and the water after precipitation flows automatically in the first water tank 4, and first is flow to certainly after the first water tank 4 is temporary
In descaler 5, in the first booster pump 6 after the processing of the first descaler 5, followed to first after the first booster pump 6 improves pressure
In ring pump 7, first order tubular ceramic film device 8 is arrived after first circulation pump 7 increases circular flow, through first order tubular ceramic membrane
Device 8 filtered production water to the first water producing tank 9, production water pressurize through the second booster pump 10, pass through 11 acid adding of the first means for feeding acid
Enter the progress desalting processing of Reverse Osmosis Desalination Process Equipment 12 after adjusting PH.The rate of recovery of Reverse Osmosis Desalination Process Equipment 12 is 90%, flow
For the production water reuse of 90m3/h, flow is that the concentrated water salt content 25000ppm of 10m3/h enters concentrated water case 13.
Second step makes a gift to someone the concentrated water in concentrated water case 13 in second reaction tank 14, and hydrogen-oxygen is added with the second adder-subtractor 15
Change sodium and sodium carbonate, be stirred to react 60 minutes, forms calcium carbonate and magnesium hydroxide crystal, the mixed liquor flow automatically to the second sedimentation basin
In 16, the water after precipitation flows automatically in the second water tank 17, from flowing in the second descaler 18 after the second water tank 17 is temporary, through the
To in third booster pump 19 after the processing of two descalers 18, in second circulation pump 20 after third booster pump 19 improves pressure, warp
Second circulation pump 20 arrives second level tubular ceramic film device 21 after increasing circular flow, through 21 mistake of second level tubular ceramic film device
Production water after filter produces water and pressurizes through the 4th booster pump 23, pass through 24 acid adding of the second means for feeding acid and adjust PH to the second water producing tank 22
Enter nanofiltration device 25 afterwards.
The rate of recovery of nanofiltration device 25 is 90%.It is 9m3/h, chloride containing through 25 filtered product water flow of nanofiltration device
Sodium is 17000ppm, concentrates 3 times into the first reverse osmosis unit 26, flow is the product water reuse of 6m3/h, flow 3m3/h
Concentrated water sodium chloride-containing 50000ppm concentrates 3 times into electrodialysis plant 27, and flow is 2m3/h product water reuses, flow 1m3/
H concentrated water sodium chloride-containing 150000ppm deviate from hardness into weak acid cation bed 28, and water outlet enters degassing film device 29 and deviates from two in water
Carbonoxide, the water after decarburization enter evaporator 30, and by the evaporation and concentration of evaporator 30, sodium chloride crystallizes to form crystal, warp
It centrifuges and forms industrial grade sodium chloride after dry and used for industrial production.
The concentrated water flow of nanofiltration device 25 is that 1m3/h is transported to freezing and crystallizing into nanofiltration concentrated water case 31 through delivery pump 32
Device 33 crystallizes after chilled and forms saltcake for industrial production use, and mother liquid flow rate is that 0.9m3/h enters mother liquor case 34, so
Enter the second reverse osmosis unit 35 afterwards, the concentrated water flow after the second reverse osmosis unit 35 concentrates 3 times is that 0.3m3/h enters flue
The fresh-water flow of vaporization, the second reverse osmosis unit 35 is 0.6m3/h reuses.
Embodiment two：
As shown in Fig. 2, a kind of haline water zero discharge treatment device, including the first reaction tank 1, the first reaction tank 1 connection first add
Alkali fills 2 and sets.First reaction tank 1 output end connection set gradually the first sedimentation basin 3, the first water tank 4, the first descaler 5 and
First booster pump 6, the first booster pump 6 connect the first membrane cisterna 36, first order flat ceramic film device 37 are equipped in the first membrane cisterna 36,
First membrane cisterna 36 connects the first suction pump 38, and the first suction pump 38 connects the first water producing tank 9.The connection of first water producing tank 9 is set successively
The second booster pump 10, Reverse Osmosis Desalination Process Equipment 12 and the concentrated water case 13 set, the second booster pump 10 and Reverse Osmosis Desalination Process Equipment 12 it
Between be equipped with the first means for feeding acid 11, concentrated water case 13 connect the second reaction tank 14.Second reaction tank 14 connects the second adder-subtractor 15,
The output end of second reaction tank 14 connects the second sedimentation basin 16, the second water tank 17, the second descaler 18 and the third set gradually
Booster pump 19, third booster pump 19 connect the second membrane cisterna 39, and second level flat ceramic film device 40 is equipped in the second membrane cisterna 39, the
Two membrane cisternas 39 connect the second suction pump 41, and the second suction pump 41 connects the second water producing tank 22, and the connection of the second water producing tank 22 is set successively
The 4th booster pump 23 and nanofiltration device 25 set are equipped with the second means for feeding acid 24 between the 4th booster pump 23 and nanofiltration device 25.
Nanofiltration device 25 produces water end (W.E.) and connects the first reverse osmosis unit 26, the electrodialysis plant 27 set gradually, and electrodialysis plant 27 connects
Weak acid cation bed 28, degassing film device 29 and the evaporator 30 set gradually.What the connection of 25 concentrated water end of nanofiltration device was set gradually receives
Filter concentrated water case 31, delivery pump 32, freezing and crystallizing device 33, mother liquor case 34 and the second reverse osmosis unit 35.
The course of work of the present invention is as follows：
Salt content is 2500ppm by the first step, and flow is that 100m3/h circulating sewages are sent into the first reaction tank 1, with first
Sodium hydroxide and sodium carbonate is added in adder-subtractor 2, is stirred to react 60 minutes, forms calcium carbonate and magnesium hydroxide crystal.The mixing
Liquid flows automatically in the first sedimentation basin 3, and the water after precipitation flows automatically in the first water tank 4, and first is flow to certainly after the first water tank 4 is temporary
In descaler 5, in the first booster pump 6 after the processing of the first descaler 5, it is transported in the first membrane cisterna 36 through the first booster pump 6,
By 37 filtered product water of first order flat ceramic film device the first water producing tank 9 is transported to after the first suction pump 38 suction
In, production water pressurizes through the second booster pump 10, enters Reverse Osmosis Desalination Process Equipment 12 after adjusting PH by 11 acid adding of the first means for feeding acid
Carry out desalting processing.The rate of recovery of Reverse Osmosis Desalination Process Equipment 12 is 90%, and flow is the production water reuse of 90m3/h, flow 10m
The concentrated water salt content 25000ppm of 3/h enters concentrated water case 13.
Second step makes a gift to someone the concentrated water in concentrated water case 13 in second reaction tank 14, and hydrogen-oxygen is added with the second adder-subtractor 15
Change sodium and sodium carbonate, be stirred to react 60 minutes, forms calcium carbonate and magnesium hydroxide crystal, the mixed liquor flow automatically to the second sedimentation basin
In 16, the water after precipitation flows automatically in the second water tank 17, from flowing in the second descaler 18 after the second water tank 17 is temporary, through the
To in third booster pump 19 after the processing of two descalers 18, it is transported in the second membrane cisterna 39 through third booster pump 19, by the second level
40 filtered product water of flat ceramic film device is transported to after the second suction pump 41 suction in the second water producing tank 22, production water warp
4th booster pump 23 pressurizes, and enters nanofiltration device 25 after adjusting PH by 24 acid adding of the second means for feeding acid.
The rate of recovery of nanofiltration device 25 is 90%, is 9m3/h, chloride containing through 25 filtered product water flow of nanofiltration device
Sodium is 17000ppm, concentrates 3 times into the first reverse osmosis unit 26, flow is 6m3/h product water reuses, and flow is 3m3/h's
Concentrated water sodium chloride-containing 50000ppm enters electrodialysis plant 27 and concentrates 3 times, and flow is the product water reuse of 2m3/h, flow 1m
The concentrated water sodium chloride-containing 150000ppm of 3/h enters weak acid cation bed 28 and deviates from hardness, and water outlet enters degassing film device 29 and deviates from water
Carbon dioxide, the water after decarburization enter evaporator 30, and by the evaporation and concentration of evaporator 30, sodium chloride crystallizes to form crystal,
Industrial grade sodium chloride is formed after being centrifuged and drying to use for industrial production.
The concentrated water flow of nanofiltration device 25 is that 1m3/h is transported to freezing and crystallizing into nanofiltration concentrated water case 31 through delivery pump 32
Device 33 crystallizes after chilled and forms saltcake for industrial production use, and flow is that the mother liquor of 0.9m3/h enters mother liquor case 34,
Subsequently into the second reverse osmosis unit 35, the concentrated water flow after the second reverse osmosis unit 35 concentrates 3 times is 0.3m3/h, is entered
Flue vaporizes, and the fresh-water flow of the second reverse osmosis unit 35 is 0.6m3/h reuses.
Claims (10)
1. a kind of haline water Zero discharge treatment method, which is characterized in that include the following steps：
1）Into haline water plus alkali generates chemical reaction, forms calcium carbonate and magnesium hydroxide, removes partly precipitated object or suspended matter,
Then pass through first order ceramics film device filter, first order ceramics film device produce water acid adding adjust PH after enter film desalter into
Row desalting processing, the production water reuse after desalination；
2）Enter reaction tank again plus after alkali into the concentrated water of film desalter, form calcium carbonate and magnesium hydrate precipitate, removes
Then partly precipitated object or suspended matter are filtered by second level ceramics film device, second level ceramics film device produces water through acid adding tune
Enter nanofiltration device after saving PH；
3）The production water of nanofiltration device is mainly sodium chloride solution, and sodium chloride solution enters film condensing device and carries out concentration, film
Enrichment facility fresh water reuse, concentrated water enter weak acid cation bed and further remove hardness, and the water outlet of weak acid cation bed enters degasser and carries out
Carbon removal treatment, the production water after deviating from carbon dioxide enter evaporator, and sodium chloride crystal salt, sodium chloride knot are formed through evaporative crystallization
Brilliant salt uses after drying process as Nacl；
4）The concentrated water main component of nanofiltration device is metabisulfite solution, and the chilled rear crystallization of the solution forms saltcake and analysed from water
Go out, mother liquor produces water reuse after reverse osmosis concentration, and concentrated water enters flue vaporization or mixes grey processing.
2. haline water Zero discharge treatment method according to claim 1, which is characterized in that step 1）With step 2）In plus
Alkali refers to that sodium hydroxide, sodium hydroxide and the combination of sodium carbonate or the combination of calcium hydroxide and sodium carbonate, step 1 is added）
With step 2）In acid adding refer to that hydrochloric acid or sulfuric acid is added.
3. a kind of haline water Zero discharge treatment method according to claim 1 carries out haline water zero discharge treatment device,
It is characterized in that, including the first reaction tank, the first reaction tank connects the first adder-subtractor, and the output end connection of the first reaction tank is successively
The first sedimentation basin, the first water tank, the first descaler and the first booster pump being arranged, the first booster pump connect first order ceramic membrane dress
It sets, first order ceramics film device connects the first water producing tank, and the first water producing tank connects the second booster pump set gradually, film desalination dress
It sets and concentrated water case, the first means for feeding acid is equipped between the second booster pump and film desalter, concentrated water case connects the second reaction tank, the
Two reaction tanks connect the second adder-subtractor, the second reaction tank output end connection set gradually the second sedimentation basin, the second water tank,
Second descaler and third booster pump, third booster pump connect second level ceramics film device, second level ceramics film device connection the
Two water producing tanks, the second water producing tank the 4th booster pump for setting gradually of connection and nanofiltration device, the 4th booster pump and nanofiltration device it
Between be equipped with the second means for feeding acid, nanofiltration device produces water end (W.E.) and connects film condensing device, and film condensing device connects the weak acid that sets gradually
Cation bed, decarbonization device and evaporator, nanofiltration concentrated water end connection set gradually nanofiltration concentrated water case, delivery pump, freezing and crystallizing device,
Mother liquor case and reverse osmosis unit.
4. haline water zero discharge treatment device according to claim 3, which is characterized in that the first ceramic film device and
Second ceramic film device selects one kind in tubular type, multichannel, doughnut, flat or disc type.
5. haline water zero discharge treatment device according to claim 3, which is characterized in that the first ceramic film device and
Ceramic membrane material used in second ceramic film device is in aluminium oxide, zirconium oxide, titanium oxide, silicon carbide, kaolin or cordierite
One kind.
6. haline water zero discharge treatment device according to claim 3, which is characterized in that first sedimentation basin and second
Sedimentation basin selects one kind in tube settling, sloping plate deposition, clarifying basin, high dense settling pond or horizontal sedimentation tank.
7. haline water zero discharge treatment device according to claim 3, which is characterized in that the film desalter selects electricity
One kind in dialysis, reverse osmosis, nanofiltration or the reverse osmosis combination with nanofiltration.
8. haline water zero discharge treatment device according to claim 3, which is characterized in that the NF membrane of the nanofiltration device
Select one kind in rolling, tubular type, dish tubular type or hollow fiber form, the material selection polyamide of NF membrane, cellulose acetate or
One kind in silica gel.
9. haline water zero discharge treatment device according to claim 3, which is characterized in that the film condensing device is selected anti-
Infiltration, electrodialysis or electrodialysis and one kind in reverse osmosis combination.
10. haline water zero discharge treatment device according to claim 3, which is characterized in that the decarbonization device is selected de-
One kind in carbon tower or degassing film.
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Application publication date: 20180821 |