CN108328780A - A kind of reuse method and device of wastewater from TiO2 factory - Google Patents
A kind of reuse method and device of wastewater from TiO2 factory Download PDFInfo
- Publication number
- CN108328780A CN108328780A CN201710565954.0A CN201710565954A CN108328780A CN 108328780 A CN108328780 A CN 108328780A CN 201710565954 A CN201710565954 A CN 201710565954A CN 108328780 A CN108328780 A CN 108328780A
- Authority
- CN
- China
- Prior art keywords
- waste water
- solid
- wastewater
- ion
- exchange resin
- 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
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000002351 wastewater Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 46
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 30
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 26
- 150000002500 ions Chemical class 0.000 claims abstract description 17
- 239000011780 sodium chloride Substances 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000012267 brine Substances 0.000 claims abstract description 10
- 238000001556 precipitation Methods 0.000 claims abstract description 10
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 40
- 238000000926 separation method Methods 0.000 claims description 37
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 26
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 25
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 239000003456 ion exchange resin Substances 0.000 claims description 22
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 22
- 239000000706 filtrate Substances 0.000 claims description 15
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 14
- 239000001110 calcium chloride Substances 0.000 claims description 14
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 14
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000005660 chlorination reaction Methods 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 8
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000003957 anion exchange resin Substances 0.000 claims description 4
- 239000003729 cation exchange resin Substances 0.000 claims description 4
- 229920001429 chelating resin Polymers 0.000 claims description 4
- 238000005342 ion exchange Methods 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 12
- 239000003513 alkali Substances 0.000 abstract description 7
- 238000001179 sorption measurement Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 238000012805 post-processing Methods 0.000 abstract description 5
- 239000000243 solution Substances 0.000 abstract description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000013043 chemical agent Substances 0.000 abstract description 2
- 238000003843 chloralkali process Methods 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 238000011017 operating method Methods 0.000 abstract 1
- 239000013049 sediment Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 14
- 239000011777 magnesium Substances 0.000 description 10
- 239000006228 supernatant Substances 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- -1 chlorine Alkali salt Chemical class 0.000 description 8
- 229910052749 magnesium Inorganic materials 0.000 description 6
- 125000002091 cationic group Chemical group 0.000 description 5
- 238000000909 electrodialysis Methods 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 2
- 239000000347 magnesium hydroxide Substances 0.000 description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000004520 agglutination Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 238000005360 mashing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000005413 snowmelt Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
- C25B1/46—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The present invention relates to a kind of reuse method of wastewater from TiO2 factory and device, the reuse method and device of the waste water in a kind of Titanium Dioxide Produced by Chloride Procedure production are specifically related to, environmental technology field is belonged to.Post-processing waste water is comprehensively utilized using Chemical treatment and resin adsorption, finally obtains sodium chloride refined soln as chlor-alkali raw material, ionic impurity reaches chlor-alkali ingredient requirement.The specific method is as follows：Post-processing waste water is pre-processed first, heavy metal ion in chemical agent precipitation solution is added, sediment is removed and reaches chlor-alkali brine raw material standard using resin adsorption.The invention has the advantages that：1. operating procedure is simple；2. treatment effeciency is high, low energy consumption；3. post-processing waste water is become chlor-alkali refined brine raw material, the combination of Titanium Dioxide Produced by Chloride Procedure technique and chloralkali process is realized.
Description
Technical field
The present invention relates to a kind of reuse method of wastewater from TiO2 factory and devices, specifically relate to a kind of chloride process titanium dioxide
The reuse method and device of waste water in powder production, belong to environmental technology field.
Background technology
Titanium dioxide is considered as a kind of current best white pigment of performance in the world, is widely used in coating, plastics, makes
The industry such as paper, printing ink, chemical fibre, rubber, cosmetics.The production capacity of titanium dioxide indirectly implies a national GDP degree.
Production titanium dioxide mainly has two methods of sulfuric acid process and chloridising at present.Sulfuric acid process long flow path, can only with
It has a rest based on operation, wet bench, sulfuric acid, water consumption are high, and waste and by-product are more, cause serious pollution to the environment.And chloridising is both energy saving
Environmental protection again, under current Environmental Protection in China pressure, chloridising is gradually built up, and will gradually substitute sulfuric acid process becomes main technique.
Chlorination process main flow is three big processes of chlorination, oxidation and post-processing.
A, chlorination：Titanium material is reacted generation titanium tetrachloride with reducing agent mixing under chlorine high temperature to obtain through rectification and purification
To refined titanium tetrachloride；
B, it aoxidizes：Titanium tetrachloride is preheated to be evaporated to gas, and rapid oxidation produces solid in oxidation furnace under 1800 DEG C of high temperature
Titanium dioxide, rapid cooling obtain crude titanium dioxide；
C, it post-processes：Crude titanium dioxide is dispersed through mashing, classification, surface treatment, washing, spray drying, air-flow crushing is sanded
Etc. processes prepare finished product.
A certain amount of sodium chloride is mainly contained in the post-processing waste water of production water after the washing of titanium dioxide surface-coating, and is contained
The substances such as micro titanium dioxide, sodium metasilicate, sodium metaaluminate, calgon.Direct emission causes the loss of titanium dioxide product simultaneously
Pollute environment.
Domestic and international processing method mainly has following two at present.1, outdoor sedimentation basin is established, is recycled by natural subsidence low
Quality titanium dioxide, liquid are sent to Sewage Disposal or natural evaporation；2, titanium dioxide is recycled after pre-processing, it will using reverse osmosis technology
3-5 times or so of Waste water concentrating, concentrate are sent into crystallizing evaporator and are evaporated, and make solid sodium chloride salt for certain fields
（Such as snow melt salt）, reuse after steam condensation.But there are many disadvantages in two methods, outdoor sedimentation basin floor space in method 1
Greatly and settling efficiency is low, and the titanium dioxide of recycling is reduced since long-time settles quality, is made containing discharge of poisonous waste in waste water
At pollution.Solid salt is flashed to using crystallizing evaporator in method 2, although solving environmental problem caused by discharge, energy consumption
Greatly, processing cost is excessively high.And it is it is not all effective in two methods to realize that resource makes full use of.
Invention content
Prior art is mainly based on evaporative crystallization, and present invention aims at providing, a kind of chloride process titanium dioxide flour flow design is useless
The method of crystal, this method can effectively remove the impurity category ion in solution, obtain refined sodium chloride solution, meet chlorine
Alkali salt water raw material standard.
A kind of reuse method of wastewater from TiO2 factory, includes the following steps：
1st step, by the waste water in chlorination legal system titanium dioxide technique by being separated by solid-liquid separation；
Desiliconizing agent and/or aluminium removal are added in the waste water that the 1st step obtains for 2nd step, carry out precipitation reaction, by obtained precipitation into
Row is separated by solid-liquid separation removal；
3rd step, the waste water that the 2nd step obtains, which is sent into after pH is adjusted to 1~6 in ion exchange resin, removes foreign ion,
Obtain refined NaCl brine.
In 1st step, waste water comes from chlorination legal system titanium dioxide technique produces water after the washing of titanium dioxide surface-coating.
In 2nd step, desiliconizing agent and/or aluminium removal are selected from magnesium chloride and/or calcium chloride.
In 2nd step, separation of solid and liquid is using sedimentation separation or to be separated by filtration.
In 3rd step, ion exchange resin be selected from cation exchange resin, anion exchange resin, amphoteric resin,
Chelating resin.
In 3rd step, obtained refined NaCl brine feeding ion film caustic soda workshop section makees raw material.
A kind of reuse means of wastewater from TiO2 factory, including：
First solid-liquid separation unit, for carrying out solid-liquid separation treatment to waste water；
Reactive tank is connected to the filtrate side of the first solid-liquid separation unit, for carrying out precipitation reaction to filtrate；
Magnesium chloride and/or calcium chloride add unit, the first solid-liquid separation unit are connected to, for magnesium chloride to be added into filtrate
And/or calcium chloride；
Ion exchange resin is connected to reactive tank, for carrying out ion-exchange except at foreign ion to the clear liquid in reactive tank
Reason.
Further include having the second solid-liquid separation unit, be connected to reactive tank, for carrying out solid-liquid point to the waste water in reactive tank
From processing；The filtrate side of second solid-liquid separation unit is connect with ion exchange resin.
Further include having ion film caustic soda electrolytic cell, be connected to the outlet of ion exchange resin, for the NaCl salt to obtaining
Water is electrolysed.
Further include thering is pH to adjust unit, the pH for the waste water to entering ion exchange resin is adjusted.
Advantageous effect
1. processing speed is fast, turns waste into wealth and avoid environmental pollution；2. being not necessarily to evaporative crystallization, a large amount of energy consumptions are saved；3. obtained essence
Sodium chloride solution processed is as chlor-alkali raw material.
Description of the drawings
Fig. 1 is the flow chart of method of reutilizing wastewater provided by the invention；
Fig. 2 is recycling equipment structure chart provided by the invention；
Fig. 3 is another equipment structure chart provided by the invention.
Wherein, the 1, first solid-liquid separation unit；2, reactive tank；3, magnesium chloride and/or calcium chloride add unit；4, second is solid
Liquid separative element；5, ion exchange resin；6, electric dialyzator；7, pH adjusts unit；8, ion film caustic soda electrolytic cell.
Specific implementation mode
Present invention wastewater source to be dealt with produces in chlorination legal system titanium dioxide technique after the washing of titanium dioxide surface-coating
Water, water quality situation are：PH is in 7.5~10.5, Ca2+In 10~50ppm, Na+In 500~5000ppm, Al in 230ppm, Si
In 0.5~20ppm, Cl-In 500~6000ppm, COD is in 4~50ppm, TDS in 1000~10000 ppm.
The treatment process that the present invention uses is first to be separated by solid-liquid separation waste water, by the titanium dioxide wherein contained, hydration
Titanium dioxide etc. is isolated, recycling.Also include silicate ion and meta-aluminic acid radical ion etc. in remaining production water, leads to
Crossing addition desiliconizing agent and/or aluminium removal can remove it, and can be calcium chloride or chlorination used herein of desiliconizing agent, aluminium removal
Magnesium, by taking magnesium chloride as an example, except silicon mechanism be magnesia mixture under alkaline condition, in water part aquation formed magnesium hydroxide complexity
Molecular structure, part magnesium hydroxide are dissolved in solution, are thus formed around by OH-The positively charged complicated colloid surrounded
Particle can carry out ion exchange in water with silicic acid cereal existing for different shape with magnesia colloidal particle, formed and found it difficult to learn
Magnesium silicate cereal, while the cohesion of siliceous colloid and the generation of calcium silicates also has occurred.The addition of calcium chloride or magnesium chloride rubs
Your amount is 1~2 times of silicate ion and meta-aluminic acid radical ion molar concentration.
Next, the colloidal precipitation of generation can be removed by way of separation of solid and liquid.
After obtaining except the clear liquid after precipitation, its pH is adjusted to 1~6 or so, is re-fed into ion exchange resin progress
Processing, removes foreign ion therein, mainly removes aluminium ion, and the NaCl brine after being refined meets ionic membrane burning
The feed needs of alkali.
In addition to aluminium ion all reaches chlor-alkali raw material standard in heavy metal ion after chemical agent is added, aluminium ion concentration is down to
1-5ppm.The method is characterized in that：Ion exchange resin includes but not limited to cation exchange resin, anion exchange
Resin, amphoteric resin, chelating resin.Aluminium ion concentration is down to 0.01-0.5ppm after ion exchange resin adsorbs.
The solid-liquid separation method that the above method uses, is not particularly limited.As the method for specific solid-liquid separation treatment,
Centrifugation mode, expression separation mode, filter type, floating separate mode, sedimentation separation mode can be enumerated.As centrifugation point
From mode, it is super to may be exemplified horizontal continuous centrifuge, the board-like centrifugal separator of separation, filter centrifugal, tall building Pu Lesi types
Centrifugal separator may be exemplified band filter, belt press, flypress, precoat filter, filter press as filter type,
As floating separate mode, continuous floating separator is may be exemplified, as sedimentation separation mode, may be exemplified agglutination sedimentation point
It disembarks, rapid sedimentation separation machine etc., but is not particularly limited in above-mentioned any one.
Above-mentioned ion exchange resin can be selected from cation exchange resin, anion exchange resin, amphoteric resin, chelating
Resin.
In one embodiment, obtained refined NaCl brine can be sent into during ion film caustic soda and is electrolysed
Processing, can obtain sodium hydroxide.
In one embodiment, in the 2nd step, before desiliconizing agent and/or aluminium removal is added, pass through electrodialysis
Waste water is concentrated, dope enters back into subsequent step.It, first will with electrodialysis methods after waste water is separated by solid-liquid separation first
It is concentrated, and the concentration of NaCl is made to improve, since NaCl can be such that the electric double layer of colloidal solid is compressed, to reduce carried charge, from
And the colloidal solid in water is made to contact with each other, and adsorb, be bonded into big particle and settle.
Based on above-mentioned method, the apparatus structure of use is as shown in Figure 2.
First solid-liquid separation unit 1, for carrying out solid-liquid separation treatment to waste water；
Reactive tank 2 is connected to the filtrate side of the first solid-liquid separation unit 1, for carrying out precipitation reaction to filtrate；
Magnesium chloride and/or calcium chloride add unit 3, the first solid-liquid separation unit 1 are connected to, for magnesium chloride to be added into filtrate
And/or calcium chloride；
Ion exchange resin 5 is connected to reactive tank 2, and foreign ion is removed for carrying out ion-exchange to the clear liquid in reactive tank 2
Processing.
Further include having the second solid-liquid separation unit 4, be connected to reactive tank 2, for carrying out solid-liquid to the waste water in reactive tank 2
Separating treatment；The filtrate side of second solid-liquid separation unit 4 is connect with ion exchange resin 5.
Further include having ion film caustic soda electrolytic cell 8, be connected to the outlet of ion exchange resin 5, for the NaCl to obtaining
Brine is electrolysed.
Further include having electric dialyzator 6, is connected to the filtrate side of the first solid-liquid separation unit 1, for being concentrated to filtrate,
The dope side of electric dialyzator 5 is connect with reactive tank 2.
Further include thering is pH to adjust unit 7, be connected to the entrance of ion exchange resin 5, for entering ion exchange resin 5
The pH of waste water be adjusted.
Waste water quality used by following embodiment is as follows：
Embodiment 1
Waste water is filtered to remove SS Solid contents by filter paper, and suitable magnesium chloride is then added（With magnesium molar concentration meter, with silicate
Ion is identical with the molar concentration of meta-aluminic acid root）, natural subsidence takes supernatant to detect after reaction, measures Si contents
9.5ppm, Al content 11ppm, Mg content 4.5ppm, other heavy metals are not detected.
The pH of supernatant is adjusted to 4 and then after cationic exchange resin adsorption, measures Si contents 3.8ppm, Al
Content 0.58ppm, Mg content 0.9ppm, other heavy metals are not detected.
Embodiment 2
Waste water is filtered to remove SS Solid contents by filter paper, and excessive magnesium chloride is then added（With magnesium molar concentration meter, addition is
1.3 times of the molar concentration of silicate ion and meta-aluminic acid root）, natural subsidence takes supernatant to detect after reaction, measures Si and contains
8.8ppm, Al content 14.4ppm, Mg content 7.7ppm are measured, other heavy metals are not detected.
Supernatant measures Si content 3.8ppm, Al content 0.48ppm, Mg content after cationic exchange resin adsorption
2.4ppm, other heavy metals are not detected.
Embodiment 3
Waste water is filtered to remove SS Solid contents by filter paper, and suitable calcium chloride is then added（With magnesium molar concentration meter, with silicate
Ion is identical with the molar concentration of meta-aluminic acid root）, natural subsidence takes supernatant to detect after reaction, measures Si contents
13.4ppm, Al content 8ppm, Ga content 2.4ppm, other heavy metals are not detected.
Supernatant measures Si content 7.6ppm, Al content 0.32ppm, Ga content after cationic exchange resin adsorption
1.3ppm, other heavy metals are not detected.
Embodiment 4
Waste water is filtered to remove SS Solid contents by filter paper, and excessive calcium chloride is then added（With magnesium molar concentration meter, addition is
1.3 times of the molar concentration of silicate ion and meta-aluminic acid root）, natural subsidence takes supernatant to detect after reaction, measures Si and contains
12.9ppm, Al content 12.6ppm, Ga content 12.5ppm are measured, other heavy metals are not detected.
Supernatant measures Si content 3.5ppm, Al content 0.15ppm, Ga content after cationic exchange resin adsorption
2.2ppm, other heavy metals are not detected.
Embodiment 5
Difference with embodiment 4 is, after filtering out SS Solid contents, is filtered by electrodialysis to filtrate.
Waste water is filtered to remove SS Solid contents by filter paper, and concentration operation, electrodialysis plant operation electricity are carried out using electrodialysis
Pressure is 120V, electric current 1.5A, feed pressure 0.01MPa.Excessive calcium chloride is added in electrodialytic concentrated water（It is dense with magnesium mole
Degree meter, addition is 1.3 times of the molar concentration of silicate ion and meta-aluminic acid root）, natural subsidence takes supernatant after reaction
Detection, measures Si content 2.2ppm, Al content 3.1ppm, Ga content 1.1ppm, other heavy metals are not detected.
Supernatant measures Si content 0.8ppm, Al content 0.02ppm, Ga content after cationic exchange resin adsorption
1ppm, other heavy metals are not detected.
Claims (10)
1. a kind of reuse method of wastewater from TiO2 factory, which is characterized in that include the following steps：
1st step, by the waste water in chlorination legal system titanium dioxide technique by being separated by solid-liquid separation；
Desiliconizing agent and/or aluminium removal are added in the waste water that the 1st step obtains for 2nd step, carry out precipitation reaction, by obtained precipitation into
Row is separated by solid-liquid separation removal；
3rd step, the waste water that the 2nd step obtains, which is sent into after pH is adjusted to 1~6 in ion exchange resin, removes foreign ion,
Obtain refined NaCl brine.
2. the reuse method of wastewater from TiO2 factory according to claim 1, which is characterized in that in the 1st step, waste water
Come from chlorination legal system titanium dioxide technique and produces water after the washing of titanium dioxide surface-coating.
3. the reuse method of wastewater from TiO2 factory according to claim 1, which is characterized in that in the 2nd step, remove silicon
Agent and/or aluminium removal are selected from magnesium chloride and/or calcium chloride.
4. the reuse method of wastewater from TiO2 factory according to claim 1, which is characterized in that in the 2nd step, solid-liquid
Separation is using sedimentation separation or to be separated by filtration.
5. the reuse method of wastewater from TiO2 factory according to claim 1, which is characterized in that in the 3rd step, ion
Exchanger resin is selected from cation exchange resin, anion exchange resin, amphoteric resin, chelating resin.
6. the reuse method of wastewater from TiO2 factory according to claim 1, which is characterized in that in the 3rd step, obtain
Refined NaCl brine be sent into ion film caustic soda workshop section and make raw material.
7. a kind of reuse means of wastewater from TiO2 factory, which is characterized in that including：
First solid-liquid separation unit（1）, for carrying out solid-liquid separation treatment to waste water；
Reactive tank（2）, it is connected to the first solid-liquid separation unit（1）Filtrate side, for filtrate carry out precipitation reaction；
Magnesium chloride and/or calcium chloride add unit（3）, it is connected to the first solid-liquid separation unit（1）, for chlorine to be added into filtrate
Change magnesium and/or calcium chloride；
Ion exchange resin（5）, it is connected to reactive tank（2）, for reactive tank（2）In clear liquid carry out ion-exchange removal of impurities
Matter ion processing.
8. the reuse means of wastewater from TiO2 factory according to claim 7, which is characterized in that further include having the second solid-liquid point
From unit（4）, it is connected to reactive tank（2）, for reactive tank（2）In waste water carry out solid-liquid separation treatment；Second solid-liquid point
From unit（4）Filtrate side and ion exchange resin（5）Connection.
9. the reuse means of wastewater from TiO2 factory according to claim 7, which is characterized in that further include having ion film caustic soda
Electrolytic cell（8）, it is connected to ion exchange resin（5）Outlet, for being electrolysed to obtained NaCl brine.
10. the reuse means of wastewater from TiO2 factory according to claim 7, which is characterized in that further include thering is pH to adjust list
Member（7）, it is connected to ion exchange resin（5）Entrance, for entering ion exchange resin（5）The pH of waste water adjusted
Section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710565954.0A CN108328780A (en) | 2017-07-12 | 2017-07-12 | A kind of reuse method and device of wastewater from TiO2 factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710565954.0A CN108328780A (en) | 2017-07-12 | 2017-07-12 | A kind of reuse method and device of wastewater from TiO2 factory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108328780A true CN108328780A (en) | 2018-07-27 |
Family
ID=62922331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710565954.0A Pending CN108328780A (en) | 2017-07-12 | 2017-07-12 | A kind of reuse method and device of wastewater from TiO2 factory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108328780A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109319910A (en) * | 2018-11-05 | 2019-02-12 | 博天环境集团股份有限公司 | A kind of composite drug and its application for the water inlet of mine water evaporative crystallization except silicon |
| CN110054333A (en) * | 2019-06-05 | 2019-07-26 | 飞潮（无锡）过滤技术有限公司 | A kind of synthetical recovery processing system of chloridising production wastewater from TiO2 factory |
| CN113718292A (en) * | 2021-08-27 | 2021-11-30 | 河南佰利联新材料有限公司 | Method for recycling waste residues in titanium dioxide production by chlorination process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205528111U (en) * | 2016-01-30 | 2016-08-31 | 江苏永超磁性材料有限公司 | Remove aluminium device |
| CN105948174A (en) * | 2016-05-26 | 2016-09-21 | 宜宾天原集团股份有限公司 | Comprehensive utilization method for chlorination-process titanium dioxide post-treatment wastewater |
| CN106396228A (en) * | 2016-09-18 | 2017-02-15 | 内蒙古久科康瑞环保科技有限公司 | Device and method for treating industrial wastewater with high salt content |
| CN207121495U (en) * | 2017-07-12 | 2018-03-20 | 江苏久吾高科技股份有限公司 | A kind of reuse means of wastewater from TiO2 factory |
-
2017
- 2017-07-12 CN CN201710565954.0A patent/CN108328780A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205528111U (en) * | 2016-01-30 | 2016-08-31 | 江苏永超磁性材料有限公司 | Remove aluminium device |
| CN105948174A (en) * | 2016-05-26 | 2016-09-21 | 宜宾天原集团股份有限公司 | Comprehensive utilization method for chlorination-process titanium dioxide post-treatment wastewater |
| CN106396228A (en) * | 2016-09-18 | 2017-02-15 | 内蒙古久科康瑞环保科技有限公司 | Device and method for treating industrial wastewater with high salt content |
| CN207121495U (en) * | 2017-07-12 | 2018-03-20 | 江苏久吾高科技股份有限公司 | A kind of reuse means of wastewater from TiO2 factory |
Non-Patent Citations (1)
| Title |
|---|
| 余经海, 河南科学技术出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109319910A (en) * | 2018-11-05 | 2019-02-12 | 博天环境集团股份有限公司 | A kind of composite drug and its application for the water inlet of mine water evaporative crystallization except silicon |
| CN109319910B (en) * | 2018-11-05 | 2022-06-03 | 博天环境集团股份有限公司 | Composite medicament for removing silicon by mine water evaporation crystallization water inflow and application thereof |
| CN110054333A (en) * | 2019-06-05 | 2019-07-26 | 飞潮（无锡）过滤技术有限公司 | A kind of synthetical recovery processing system of chloridising production wastewater from TiO2 factory |
| CN113718292A (en) * | 2021-08-27 | 2021-11-30 | 河南佰利联新材料有限公司 | Method for recycling waste residues in titanium dioxide production by chlorination process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107459200B (en) | High-salt-content wastewater salinity resource recovery process | |
| CN108203197B (en) | Processing system who contains salt waste water | |
| CN105540960B (en) | The processing method and system of limestone/lime-gypsum method flue gas desulfurization waste-water | |
| CN104276709B (en) | Special equipment of coal chemical industry concentrated brine zero discharge technique | |
| CN108249646A (en) | Can resource recycling power plant desulfurization wastewater Zero-discharge treating process and device | |
| CN104843927A (en) | Desulfurization waste water zero discharging process and system | |
| CN108328781A (en) | The wastewater treatment method and device generated in a kind of Titanium Dioxide Produced by Chloride Procedure production process | |
| CN104909390B (en) | A kind of embrane method couples lime-flue gas purified brine technique | |
| CN105236659A (en) | Nanofiltration treatment method of desulfurization waste water | |
| CN102851684B (en) | A kind of perhalogeno water function of mechanical steam recompression method alkali-making process and device | |
| CN207108675U (en) | Caused wastewater treatment equipment in a kind of Titanium Dioxide Produced by Chloride Procedure production process | |
| CN101979350B (en) | Physical and chemical sludge recycling and reducing method | |
| CN108328780A (en) | A kind of reuse method and device of wastewater from TiO2 factory | |
| CN208120896U (en) | Can resource recycling power plant desulfurization wastewater zero discharge treatment device | |
| CN107381885A (en) | Zero-discharge process and equipment for treating high-salt-content wastewater | |
| CN106517605A (en) | Zero-discharge process and equipment for desulfurization wastewater | |
| CN104230083B (en) | High salt contains the recovery method of sodium-chlor and glycerine in glycerine high concentrated organic wastewater | |
| CN108218096B (en) | System and method for treating mercury-containing high-salt wastewater from chloroethylene production by calcium carbide method | |
| CN104909494A (en) | Process for impurity removal and purification of industrial high-concentration brine and special equipment of process | |
| CN107244773A (en) | Zero-discharge process and equipment for desulfurization wastewater treatment and recycling | |
| CN207121495U (en) | A kind of reuse means of wastewater from TiO2 factory | |
| CN111170516A (en) | Treatment process and treatment system for desulfurization wastewater | |
| CN113754172A (en) | Polycrystalline silicon wastewater treatment method | |
| CN116964247A (en) | System and method for direct production of lithium hydroxide | |
| CN204939142U (en) | Treatment facility of desulfurization waste water that flue gas desulfurization system discharged |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180727 |
|
| RJ01 | Rejection of invention patent application after publication |