CN106145490A - A kind of expoxy propane calcium chloride saponification waste-water processes method of resource - Google Patents
A kind of expoxy propane calcium chloride saponification waste-water processes method of resource Download PDFInfo
- Publication number
- CN106145490A CN106145490A CN201510254207.6A CN201510254207A CN106145490A CN 106145490 A CN106145490 A CN 106145490A CN 201510254207 A CN201510254207 A CN 201510254207A CN 106145490 A CN106145490 A CN 106145490A
- Authority
- CN
- China
- Prior art keywords
- water
- waste water
- ammonium chloride
- calcium
- waste
- 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
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The present invention is production of propylene oxide method of wastewater treatment, comprise the steps: 1, use carbonate that the calcium ion in waste water is replaced, calcium chloride is replaced into ammonium chloride, 2, by ammonium chloride supernatant membrance concentration to more than 20%, 3, it is pressed powder by concentration ammonium chloride liquid MVR evaporative crystallization the most respectively, 4, winnofil centrifuge dehydration microwave activation is become nm-class active calcium carbonate powder, 5, the moisture of recycling 90-95%.
Description
Technical field
The present invention is a kind of high calcium, the method for high salt industrial wastewater desalting processing resource.Belong to industrial waste water treatment.
Background technology
The production of propylene oxide of China mostly uses chlorohydrination, production process can produce the waste water of a large amount of chloride containing calcium, manufacturing enterprise mostly uses cooling, neutralize, Organic substance in the method removal water that high salt bacterium is biochemical, water outlet typically can reach the national grade one discharge standard of COD≤50Mg/L, but calcium chloride salinity contained in waste water cannot process up to standard, this high-salt wastewater is discharged in environment, can be because containing substantial amounts of chloride ion in waste water, cause waste water to water system and the severe contamination of soil, calcium chloride can cause the high salinization of surface water, the most agricultural surface water salinization of soil, cannot irrigated farmland；Urban domestic water is such as taked subsoil water can become bitter cannot to use；This haline water can permeate the ground polluted underground water, original fresh groundwater hardship salinization, makes the subsoil water of hundreds of square kilometres or even thousands of square kilometres to take, has a strong impact on domestic water and the agricultural irrigation water of large area town dweller.
Therefore, the desalination of this high-salt wastewater just become all chlorohydrinations produce expoxy propane enterprise keypoint treatment task.
Administering the usual method containing high calcium chloride wastewater and have two kinds, one is to use evaporative crystallization method, and two is to use membrane separating method.But both of these approaches is due to respective disadvantage, so far cannot popularization and application:
Evaporative crystallization method: owing to calcium chloride condensing crystallizing to about 20% is to produce colloidal state, can produce the phenomenon of wall built-up and blocking to evaporation tubes and inner chamber, so, it is impossible to properly functioning；It addition, evaporation investment is huge, operating cost is high.So being inapplicable with method of evaporating removing calcium chloride.
Membrance concentration method: owing to the calcium ion in calcium chloride wastewater can be combined into calcium sulfate precipitation with the sulfate radical in waste water, blocking fenestra, bicarbonate radical meeting in waste water and calcium binding, precipitation of calcium carbonate can be generated when concentration increases and can give birth to blocking fenestra equally, calcium ion in waste water can absorb the carbon dioxide in air and generate precipitation of calcium carbonate etc., so comprehending because frequent stifled film at film, frequently backwash and the renewal of membrane component and produce huge operating cost.Furthermore calcium chloride can only be concentrated into due to RO reverse osmosis the level of 7-8% in the ordinary course of things, then improve concentration ratio, then can increase considerably reverse osmosis pressure, not only can produce film rupture equivalent risk, also can be greatly increased energy consumption, make operating cost drastically increase.
So, for the desalination process of calcium chloride wastewater, the method using above-mentioned routine is impracticable.
Present invention employs and calcium ion is replaced as ammonium ion soluble in water, and calcium ion is combined with carbonate postprecipitation simultaneously and isolates aqueous solution, and original calcium chloride solute in water, it is replaced as ammonium chloride；And ammonium chloride is to be combined into sedimentary by carbonate, the carbon dioxide in same air also will not be combined into precipitate with ammonium ion；So using membrance concentration would not produce the phenomenon of stifled film after displacement, thus ammonium chloride concentration can be concentrated to the concentration of more than 20%, without blocking up film, so not only reducing the expense that film processes, and substantially prolongs the service life of film.
Furthermore, the calcium carbonate of precipitation is the chemical precipitation calcium carbonate that purity is the highest, the particle diameter of precipitation is nanoscale or micron-sized coccoid, this calcium carbonate coccoid is after drying and crushing activates, fire retardant, coating, paint, the additive of plastics can be done, have purposes the most widely, can also make the powder of dry powder extinguisher, its using value is high with market value.
Staying the ammonium chloride in water after same displacement, uses three grades of low pressure combination membrance concentration to after more than 20%, the moisture membrane filtration of original more than waste water 75-80% can be made to become pure water, direct reuse is in production technology, water saving more than 75-80%.
And it is concentrated into the dense water of ammonium chloride of more than 20%, it is less than the 20% of raw wastewater amount.The dense water of this part re-uses MVR devaporation crystallization, and its evaporative crystallization expense is 1/4th of raw wastewater evaporative crystallization expense.The operating cost that overall waste water processes reduces 3/4ths, is greatly reduced the processing cost of ton waste water.And ammonium chloride powder is a kind of chemical fertilizer, being also a kind of feed additive, the main component that aneroid battery electrolysis is stuck with paste, is the base stock (such as the primary raw material of the chemical products such as quaternary ammonium salt, tetraethylammonium chloride) producing several chemical productss
Industrial calcium chloride waste water has substantial amounts of sulfate radical, bicarbonate radical, ferrum, magnesium, manganese plasma impurity, the present invention uses special purification method---plasma aeration, sulfate radical can be made to generate calcium sulfate precipitation with calcium ion, bicarbonate radical generates precipitation of calcium carbonate with calcium ion, ferrum, magnesium, manganese ion is equally made to generate ferric carbonate, magnesium carbonate, the precipitation of manganese carbonate, two kinds of ions of negative and positive in waste water are all deposited to the degree of trace, and the COD in waste water can be made to be further decreased to 5-10Mg/l so that in waste water, calcium chloride becomes single composition.
In the displacement stage, present invention uses ammonium hydrogen carbonate as displacement precipitation agent, it gets final product rapid precipitated calcium ion, calcium ion can be replaced as ammonium ion again, and it is combined into ammonium sulfate and ammonium hydrogen carbonate with the sulfate radical in residual to water, bicarbonate ion with ammonium ion, and these ammonium salts are the most soluble in water, these compositions are all without the disadvantage processing the fenestra that results in blockage to the membrance concentration in later stage and film, and reduce membrance concentration pressure, substantially prolongs membrane lifetime, reduce the operating cost that film processes.
Membrance concentration dense water out, can use MVR that method is evaporated under reduced pressure, and by dense water evaporative crystallization powdering solid, then sells through being dehydrated, can be used as after drying product.And the pure water of evaporative condenser equally complete-reclaiming is in production technology.So reuse total amount of pure water just can reach the reclamation rate of 90-95%, has greatly saved industrial water, has only to supplement the total Water of 5-10% every day, can normally produce, and water-saving result is huge.
Any waste water and gas of institute of present invention process U.S. is discharged, and has substantially accomplished zero-emission.It is a zero-emission, green, energy-conservation, water saving, the environmental protection enterprise of recycling economy that enterprise serious for one blowdown is become.
Further, the integrated operation expense of the present invention is positive benefit.Not only operating cost is negative (positive benefit), and this has a profit growth point by become enterprise.Comprehensive accounting: ton waste water can produce the benefit of 5-20 unit.Huge economic benefit will be produced for enterprise.
The warm effluent heat recovery of 70 DEG C of plant effluent outlet is become 100-130 DEG C of high energy heat by the present invention simultaneously, reclaim heat energy and escalate into the conduction oil of 110-130 degree, can be directly used for the pneumatic conveying drying of calcium carbonate, ammonium chloride, evaporative crystallization, the use heat being dehydrated, drying, activate, revolutionizing the original air-conditioning temperature-reducing of workshop water outlet, the technique of water-cooled cooling high cost input, the heat energy only reclaimed just can meet the heat energy needs of above-mentioned two kinds of products.The most energy-conservation, and greatly reduce the operating cost of ton waste water.This is an energy-saving and cost-reducing good measure.
Figure of description:
Fig. 1 one expoxy propane calcium chloride saponification waste-water recycling processing method
1, original biochemical treatment system, 2, one sinks pond, and 3, second pond, 4, intermediate pool, 5, membrance concentration processing system, 6, clear water reserviors, 7, ammonium chloride concentration basin, 8, MVR vaporizer, 9, calcium carbonate concentration basin, 10, dewatering centrifuge, 11, microwave activation device, 12, effluent segregation, 13, ammonium chloride dope heat exchanger, 14, recuperation of heat upgrade-system, 15, high energy Aeration fan.
In conjunction with accompanying drawing, further illustrate the technical process of accompanying drawing:
nullAs shown in Figure 1，The technique initially entering the present invention from genuine Waste Water Treatment 1 water outlet，Water outlet enters one and sinks pond 2，Water inlet is simultaneously introduced composite flocculation agent，And use plasma Aeration fan 15 to aerating wastewater，Sulfate radical in precipitation waste water and bicarbonate radical，One sinks pond wastewater supernatant fluid adds displacer and enters second pond 3 winnofil，Displacement calcium ion is ammonium ion，Plasma blower fan is to second pond half deep aeration，Remove the bicarbonate radical of residual，The supernatant of clarification enters intermediate pool 4，Membrance concentration processing system 5 is entered after the clear water of the containing ammonium chloride of intermediate pool being added antisludging agent with pump，The dense water of concentrated ammonium chloride enters ammonium chloride concentration basin 7，The pure water filtered out enters clear water reserviors 6，Detect qualified rear fully recovering in former propylene oxide production system，The dense water of ammonium chloride concentrated enters ammonium chloride concentration basin 7，MVR vaporizer 8 is added with pump，The dense water of ammonium chloride is about the hot liquid of 70 DEG C through ammonium chloride solution heat exchanger 13 heating，Evaporating wherein evaporative crystallization in MVR is that calcium chloride powder packaging is sold，The Paris white muddy water of precipitation，Drain into calcium carbonate concentration basin 9，Add dewatering centrifuge 10 after concentrated to be dehydrated，Half-dried Paris white adds activation in microwave activation device，Become nano level activated calcium carbonate powder，Packaging is sold；The thermal wastewater of the middle temperature (about 70 DEG C) that ammonium chloride drying crystalline, the dry institute calorific requirement of calcium carbonate are discharged by production of propylene oxide workshop reclaims upgrading raw wastewater heat energy recycling through the dense water-to-water heat exchanger of ammonium chloride 13 and recuperation of heat upgrade-system 14, serve energy-conserving action, also save a large amount of original workshop and go out the electric energy of water for cooling, energy-saving and cost-reducing, reduce processing cost.
Feature of present invention:
1, the present invention uses composite flocculation agent and plasma blower fan aeration to purify the foreign ions such as the sulfate radical in former biochemical treatment plants water outlet, bicarbonate radical, ferrum, manganese, and removes the COD of residual, makes only to remain in waste water the composition of calcium chloride.
2, use ammonium hydrogen carbonate as displacer, one is that winnofil is thorough, two is that calcium ion is replaced as ammonium ion, in the case of ammonium hydrogen carbonate is slight excess of, calcium ions precipitate the most thorough, and stay the ammonium ion in waste water and become ammonium chloride with the chloride binding in waste water, and other anion root all generates corresponding ammonium salt in waste water, and these are all composition soluble in water by salt, next step membrance concentration system will not be caused stifled film, the disadvantages such as fouling, substantially prolongs the life-span of film, improve the effect of membrance concentration, reduce the operating cost processing waste water.
3, strengthening owing to film processes enrichment, the pure water amount filtered out is increased to the amount of 75-80%, furthermore the evaporation condensed water of MVR can also reclaim about 10-15%, and total pure water yield can reach the reuse amount of 90-95%.It is greatly improved water-saving result.
4, all of moisture of present invention process all recycles, and all of generation thing is not the most refuse, all becomes the available or resource of recycling, so, this technique does not has any dirty refuse to produce, and whole moisture recycle, and therefore present invention process is absolute zero discharge technology.Any secondary pollution is not had to produce with garbage.Absolute cleaning production cycle economy.
5, present invention process not only will not increase the weight of waste water processing cost, economic benefit can be produced on the contrary, the economic benefit calculation of 10-15 unit is produced by ton water, then produce economic benefit day about in hundreds of thousands unit, this is a point of economic increase to enterprise, and the development for enterprise creates huge economic benefit and social benefit.It it is a green environmental protection technique of benefiting the nation and the people.
6, the present invention takes full advantage of the heat that the draining of original production workshop is carried, air-conditioning temperature-reducing before becoming consumes substantial amounts of electric energy, become upgrading these energy recovery, this partial heat energy is utilized to remove the manufacture course of products such as dehydration, dry, crystallization, save substantial amounts of energy resource consumption, greatly reduce waste water and process to obtain expense, and greatly reduce the thermal pollution of enterprise, reduce the energy consumption of enterprise.It it is the good project achieved many things at one stroke.
7, present invention employs microwave vacuum activating technology, lime deposit is activated into nanoscale activated calcium carbonate powder, substantially increase value and the selling price of lime deposit, create high income for enterprise.
8, solving a big polluter for local environment, it is ensured that the town dweller of local large area volume is not being polluted by haline water, the not large-area surface and ground water of recontamination improves the ecological environment of locality.Progressively repair surface drainage and lithic drainage, improve the water quality (salinization of soil, bitter) of agricultural irrigation water.
Case study on implementation one
The art of this patent is implemented in somewhere, Shandong epoxy propane waste water processing system, and this enterprise's day arranges chloride containing calcium waste water 2.4 ten thousand ton per day, and enterprise provides biochemical treatment plants for oneself, and biochemical treatment effluent quality is as follows:
Testing result
Process technique such as Fig. 1
1, this waste water processes listed by effluent quality index as above table through genuine biochemical treatment system:
Calculating this waste water chloride containing calcium is 4,22%, and chloride ion is about 27000Mg/l, and sulfate radical is 900-1000Mg/l
2, technique PROCESS FOR TREATMENT as shown in Figure 1 is processed, plasma aeration removing other impurity in addition to calcium chloride, use ammonium bicarbonate precipitation calcium ion, using three grades of low pressure combination membrance concentration calcium chloride is more than 20%, using MVR evaporative crystallization ammonium chloride is pressed powder, and the residual heat air current that the calcium carbonate of precipitation reclaims is dried, dehydration, microwave activation, makes nm-class active calcium carbonate powder.
3, film processes and MVR condensation of water water quality is pure water, and fully recovering is in production of propylene oxide line.Reclamation rate reaches 94.3%.
4, ton water produces calcium carbonate: 40 kilograms, purity is 99.5%
5, ton aquatic product ammonium chloride: about 43 kilograms, moisture content is 5.1%.
6, ton water uses ammonium hydrogen carbonate about 63 kilograms, and purity is 95%
7, the direct medicament expense of ton waste water is: 32.5 yuan (market price price 500 yuan/ton), active nano-calcium carbonate is worth 32 yuan (minimum calculation price 800 yuan/ton), and ammonium chloride (anhydrous) is worth about 25.8 yuan (minimum calculation price 600 yuan/ton).
8, comprehensive ton water rate is: 10.5 yuan.
9, calculate ton waste water to get a profit: 14.80 yuan
10, absolute zero discharge, saves charges for disposing pollutants about 120,000 yuan every day.
11, water saving every day: 2.2 ten thousand tons, 5 yuan of ton water, then economize on water every day 110,000 yuan.
12, energy-conservation 7200KWh, power cost saving about 0.6 ten thousand.
13, environmental benefit is huge with ecological benefits.
Claims (7)
1. expoxy propane calcium chloride saponification waste-water processes a method of resource, and its step includes:
(1), the waste water after biochemical treatment system processes: the present invention is that epoxy propane waste water is after biochemical treatment
Waste water, waste water is limpider, chloride containing calcium 4-12%, PH=6.9-7.3 in waste water.
(2), plasma aeration removing waste water in COD: will process after waste water through plasma Aeration tank aeration,
Use plasma blower fan with waste water continuous aeration to step 1 of the air quantity of wastewater flow rate 100%--2000%,
With the COD in thorough removal step 1 waste water and remaining float.
(3), ammonium hydrogen carbonate displacement precipitation calcium ion is used: the waste water after step (2) being processed adds amount of calculation
Ammonium hydrogen carbonate, the calcium chloride in waste water is then converted into winnofil (CaCO3): 3.8%-4% and chloride
Changing ammonium (NH4Cl) 4.0～the waste water of 4.3%, its chemical equation is:
CaCl2+NH4CO3→CaCO3↓+2NH4Cl+CO2↑+H2O
(4), the calcium carbonate that precipitates of step (3) be chemical precipitation, can be centrifuged, be dried, attrition grinding, manufacture nanometer
Calcium carbonate (CaCO3) powder or micro-calcium carbonate (CaCO3) powder body material.
(5), plasma aeration removes bicarbonate radical: the supernatant effluent that separation calcium carbonate (CaCO3) precipitates contains
The ammonium chloride waste-water of ammonium chloride (NH4Cl) 4%--4.5%, re-uses plasma blower fan aeration, or adds
The hydrogen peroxide of amount of calculation, to remove the remaining bicarbonate radical and calcium bicarbonate contained in ammonium chloride waste-water
Ca (HCO3) 2, to ensure that the calcium ion in waste water precipitates completely.
Its chemical equation is:
Ca(HCO3)2+H2O2→CaCO3↓+2H2O+CO2↑
(6), three grades of low pressure combination membrance concentration ammonium chloride waste-waters: the ammonium chloride waste-water that step (3) obtains, use three grades
Low-voltage combined type film, can be by the high concentration of this Waste water concentrating to containing ammonium chloride (NH4Cl) 18%--20%
Waste water, ammonium chloride dope is raw wastewater amount 20% after its concentration.
(7), the dense water of MVR condensing crystallizing ammonium chloride, it is thus achieved that ammonium chloride powder body: use MVR evaporative crystallisation process,
The dense water of ammonium chloride by 20%, crystallizes as aqueous ammonium chloride powder body.
(8) anhydrous ammonium chloride powder, is produced: use hot pipe technique and inversely heat technology, by epoxypropane workshop
Waste Heat Recovery in the about 70 DEG C of waste water discharged is to 100 DEG C--and 130 DEG C of high energy heats, go dehydration to contain with heating
Water calcium chloride powder, makes anhydrous ammonium chloride powder.
(9), waste water pick up the heat: use hot pipe technique and inversely heat technology, by the pact of production of propylene oxide
Waste Heat Recovery in 70 DEG C of waste water is to 100 DEG C--130 DEG C of high energy heats.For being dried of ammonium chloride crystals, de-
Water.The pneumatic conveying drying of ammonium chloride crystals, dehydration, the used heat of recovery be also used in precipitation of calcium carbonate be dried (air-flow),
During drying, microwave activation.
Method the most according to claim 1, it is characterised in that in described step (2), (5), to containing miscellaneous
The waste water of matter, uses plasma blower fan aeration, the impurity in waste water and bicarbonate radical can be oxidized to carbonate and enter
One step generates precipitation of calcium carbonate with the calcium ion in waste water, it is ensured that the muriatic purity in waste water.
Method the most according to claim 1, it is characterised in that in described step (3), (4), uses bicarbonate
Ammonium precipitated calcium ion, and to replace calcium ion be ammonium ion, generates ammonium chloride, after calcium carbonate precipitates completely, supernatant
Liquid only stays ammonium chloride solute component.
Method the most according to claim 1, it is characterised in that described step (6), in, use special low
Pressure combined films, three grades of special membrance concentration techniques, the ammonium chloride of about 4% in waste water can be concentrated into
The ammonium chloride concentrated solution of 18%-20%, waste water total amount will be reduced to about 20%, remaining waste water of 80%
Pure water reuse will be filtered into production, water saving 80%.
Method the most according to claim 1, it is characterised in that in described step (7), uses MVR evaporator man
Skill, crystallizes into ammonium chloride powder by the ammonium chloride concentrated solution of concentrate 20%.Evaporation institute calorific requirement comes from ring
The raw wastewater heat recovery technique that Ethylene Oxide workshop is discharged, i.e. step (9) described in claim 1, in.
Saving the substantial amounts of energy, energy-saving effect is obvious.
Method the most according to claim 1, it is characterised in that in described step (4), by the calcium carbonate of precipitation
Hydrous powdery uses step (9) calcium carbonate powder to be dried to anhydrous powder in pneumatic conveying drying kiln, and the highest
It is Carbon Dioxide calcium powder that temperature is dried, and uses microwave fast heating to activate, and generates active nano-calcium carbonate powder, institute
Calorific requirement comes from the raw wastewater heat recovery technique that production of propylene oxide workshop is discharged, i.e. claim 1 institute
The step (9) stated, the substantial amounts of energy of middle saving, energy-saving effect is obvious.
7. can reclaim 90%-95%'s according to the claims in the present invention step (6), (7) binomial of right 1 requirement
Pure water, can be back to the production of expoxy propane completely, can save the industrial water of more than 90%, only needs every day
The former water supplementing 5-10% just can be completely secured industrial water, and the present invention can make production of propylene oxide economize on water
More than 90-95%, water-saving result is huge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510254207.6A CN106145490A (en) | 2015-05-12 | 2015-05-12 | A kind of expoxy propane calcium chloride saponification waste-water processes method of resource |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510254207.6A CN106145490A (en) | 2015-05-12 | 2015-05-12 | A kind of expoxy propane calcium chloride saponification waste-water processes method of resource |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106145490A true CN106145490A (en) | 2016-11-23 |
Family
ID=57348120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510254207.6A Pending CN106145490A (en) | 2015-05-12 | 2015-05-12 | A kind of expoxy propane calcium chloride saponification waste-water processes method of resource |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106145490A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357355A (en) * | 2019-07-17 | 2019-10-22 | 青岛科技大学 | A kind of saliferous Glycerol Wastewater processing system and technique |
| CN112479228A (en) * | 2020-11-30 | 2021-03-12 | 安徽金禾实业股份有限公司 | Refining device and method for ammonium chloride crude product in sucralose chlorination neutralization and salt pressing working section |
| CN113264905A (en) * | 2021-06-07 | 2021-08-17 | 张家港衡业特种树脂有限公司 | Method for removing biochemical toxicity of rectification wastewater in epoxy resin manufacturing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69300791D1 (en) * | 1992-04-30 | 1995-12-21 | Tosoh Corp | Process for removing oxidizable or reducible substances, composite structure containing a metal oxide or a metal hydroxide and process for their production. |
| WO1998002505A1 (en) * | 1996-07-17 | 1998-01-22 | Texaco Development Corporation | Minimizing evaporator scaling and recovery of salts during gasification |
| CN101337745A (en) * | 2007-07-06 | 2009-01-07 | 辽宁大泽环保工程有限公司 | Method for processing production waste water of propylene oxide |
| CN103601332A (en) * | 2013-11-11 | 2014-02-26 | 南京大学 | Low-temperature plasma and microelectrolysis combined treatment method for nitrotoluene production sewage |
| CN103880207A (en) * | 2012-12-23 | 2014-06-25 | 吕子玉 | Calcium chloride-rich wastewater treatment method |
-
2015
- 2015-05-12 CN CN201510254207.6A patent/CN106145490A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69300791D1 (en) * | 1992-04-30 | 1995-12-21 | Tosoh Corp | Process for removing oxidizable or reducible substances, composite structure containing a metal oxide or a metal hydroxide and process for their production. |
| WO1998002505A1 (en) * | 1996-07-17 | 1998-01-22 | Texaco Development Corporation | Minimizing evaporator scaling and recovery of salts during gasification |
| CN101337745A (en) * | 2007-07-06 | 2009-01-07 | 辽宁大泽环保工程有限公司 | Method for processing production waste water of propylene oxide |
| CN103880207A (en) * | 2012-12-23 | 2014-06-25 | 吕子玉 | Calcium chloride-rich wastewater treatment method |
| CN103601332A (en) * | 2013-11-11 | 2014-02-26 | 南京大学 | Low-temperature plasma and microelectrolysis combined treatment method for nitrotoluene production sewage |
Non-Patent Citations (2)
| Title |
|---|
| 姚广致: "阻垢剂对碳酸钙垢的抑制能力", 《工业水处理》 * |
| 张春晖等: "《电化学技术在水处理中的研究与应用》", 30 September 2013, 北京：中国环境出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357355A (en) * | 2019-07-17 | 2019-10-22 | 青岛科技大学 | A kind of saliferous Glycerol Wastewater processing system and technique |
| CN112479228A (en) * | 2020-11-30 | 2021-03-12 | 安徽金禾实业股份有限公司 | Refining device and method for ammonium chloride crude product in sucralose chlorination neutralization and salt pressing working section |
| CN113264905A (en) * | 2021-06-07 | 2021-08-17 | 张家港衡业特种树脂有限公司 | Method for removing biochemical toxicity of rectification wastewater in epoxy resin manufacturing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mavukkandy et al. | Brine management in desalination industry: From waste to resources generation | |
| CN209368040U (en) | A kind of highly mineralized mine water near-zero release processing and comprehensive resource utilize system | |
| CN107459200B (en) | High-salt-content wastewater salinity resource recovery process | |
| CN105152443B (en) | The method and system of high slat-containing wastewater zero-emission crystal salt resource reclaim | |
| CN104326612B (en) | A kind of method and system reclaiming salt from Waste Water Treatment | |
| CN102583862B (en) | Method and system for treating saline wastewater to zero discharge and recycling | |
| CN109231632A (en) | The processing method and system of a kind of highly mineralized mine water reuse and resource utilization | |
| CN102139982B (en) | Water purification and regeneration device based on rotary spray evaporation and application of device | |
| CN104860462A (en) | Equipment and application method of microwave purification treatment for heavy metal ion containing wastewater | |
| CN109354292A (en) | A kind of minimizing treatment process of landfill leachate film-filter concentration liquid | |
| CN104085933A (en) | High-salinity and high organic matter wastewater treatment process | |
| CN103657122A (en) | Sextuple-effect evaporation device | |
| CN104402156A (en) | Coal chemical high brine purification, evaporative crystallization and recovery technology and special-purpose equipment | |
| EA022491B1 (en) | Thermal distillation system and process | |
| CN104909494A (en) | Process for impurity removal and purification of industrial high-concentration brine and special equipment of process | |
| CN203591603U (en) | Sextuple-effect evaporator | |
| CN104230124A (en) | Coal chemical industry wastewater zero emission technology and special equipment thereof | |
| CN107417023A (en) | A kind of method using electric drive UF membrane desulfurization wastewater | |
| CN205556349U (en) | Novel zero release of desulfurization waste water is handled device | |
| CN106145490A (en) | A kind of expoxy propane calcium chloride saponification waste-water processes method of resource | |
| CN109205902B (en) | Industrial high-salt wastewater reverse osmosis waste heat recovery treatment system | |
| CN204310904U (en) | A kind of system reclaiming salt from Waste Water Treatment | |
| Tanga | Advanced treatment technology for FGD wastewater in coal-fired power plants: current situation and future prospects | |
| CN204939142U (en) | A kind for the treatment of facility of desulfurization wastewater of flue gas desulphurization system discharge | |
| CN209411998U (en) | A kind of processing system of highly mineralized mine water reuse and resource utilization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161123 |