CN106587216A - Crystallization type high-salinity waste water purifying technology - Google Patents
Crystallization type high-salinity waste water purifying technology Download PDFInfo
- Publication number
- CN106587216A CN106587216A CN201611263131.4A CN201611263131A CN106587216A CN 106587216 A CN106587216 A CN 106587216A CN 201611263131 A CN201611263131 A CN 201611263131A CN 106587216 A CN106587216 A CN 106587216A
- Authority
- CN
- China
- Prior art keywords
- waste water
- salinity waste
- salt
- crystallization
- water
- 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.)
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Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
Abstract
The invention discloses a crystallization type high-salinity waste water purifying technology. The crystallization type high-salinity waste water purifying technology comprises the following steps that firstly, high-salinity waste water and a water reducing agent are fed into a reaction still to be fully stirred and mixed through a stirrer and perform a reaction; and then, the mixture is pumped to a centrifugal machine through a lifting pump, and salt type crystals and raffinate are separated through the centrifugal machine. Because the water reducing agent is added to the high-salinity waste water, carboxyl, hydroxyl, a sulfonic group and the like of the water reducing agent form hydrogen-bond association with water molecules, a great number of salt type crystals are dissolved out and separated after dehydration, the carboxylic acid group water reducing agent is recycled through a decompression fractionator, a large amount of salt is removed finally, and then the high-salinity waste water is purified. The crystallization type high-salinity waste water purifying technology has the advantages of being simple, environmentally friendly, high in efficiency and good in economic benefit.
Description
Technical field
The present invention relates to a kind of handling process of purifying electroplating wastewater.
Background technology
In electroplating wastewater processing, remove and process outside organic wastewater and heavy metal wastewater thereby, the height of also substantial amounts of inorganic salt
Salt waste water, such dope contain substantial amounts of Cl-、F-、SO4 2-、Na+、Ca2+、Mg2+Plasma.The method for processing such waste water at present
Biochemical process and physico-chemical process is mainly adopted to be processed.The area of environmental requirement zero-emission must be using membrance concentration technique plus evaporation
Crystallize to realize producing Water circulation and salt crystallization, be finally reached zero emission requirement.
The effect that biochemical process processes directly such high-salt wastewater with physico-chemical process is poor, it is impossible to effectively remove various salinities.
And membranous system+such high-salt wastewater of evaporative crystallization technique process is adopted, can also produce film operating cost height, film and use
The problems such as cycle is short, costly equipment investment, constrain significantly the longtime running of processing system.
The content of the invention
It is an object of the invention to provide the crystallization formula high-salt wastewater of a kind of process is simple, environment-friendly high-efficiency, better economic benefit
Purification technique.
The present invention is realized in that above-mentioned purpose：
Crystallization formula high-salt wastewater purification technique, its step are as follows：First high-salt wastewater and water reducer are sent in reactor by stirring
Device is thoroughly mixed reaction, is then extracted into centrifuge by elevator pump, separates saline crystallization and residual liquid by centrifuge.
Wherein, saline crystallization is discharged from centrifuge, and residual liquid enters liquid storing barrel, then is extracted in heater by delivery pump
Row heating, carries out vacuum fractionation into vacuum fractionation device after heating, isolates water reducer and recycle-water.
Wherein, the water reducer is carboxylic acid group's water reducer.
The invention has the beneficial effects as follows：By plus-minus water preparation in high-salt wastewater, the carboxyl of water reducer, hydroxyl, sulfonic group
Hydrogen bond association is formed Deng with hydrone, a large amount of saline crystallizations are separated out, is separated Jing after dehydration, Jing vacuum fractionations device is by carboxylic acid group's diminishing
Agent is reclaimed, and finally removes a large amount of salt, and high-salt wastewater is purified.The present invention have process is simple, environment-friendly high-efficiency, economic benefit compared with
Good advantage.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples：
Fig. 1 is the process chart of the present invention.
Specific embodiment
With reference to Fig. 1, formula high-salt wastewater purification technique is crystallized, it is characterised in that：First high-salt wastewater and water reducer are sent to instead
Answer in kettle 1 and reaction is thoroughly mixed by agitator 2, centrifuge 4 is extracted into by elevator pump 3 then, salt knot is separated by centrifuge 4
Brilliant and residual liquid.Wherein, the water reducer is carboxylic acid group's water reducer.Saline crystallization is discharged from centrifuge 4, and residual liquid enters liquid storing barrel
5, be then extracted in heater 7 by delivery pump 6 and heated, vacuum fractionation is carried out into vacuum fractionation device 8 after heating, isolated
Water reducer and recycle-water.The present invention by plus carboxylic acid group's water reducer in high-salt wastewater, the carboxyl of water reducer, hydroxyl, sulfonic group
Hydrogen bond association is formed Deng with hydrone, a large amount of saline crystallizations are separated out, is separated Jing after dehydration, Jing vacuum fractionations device is by carboxylic acid group's diminishing
Agent is reclaimed, and finally removes a large amount of salt, and high-salt wastewater is purified.
Wherein, carboxylic acid group's water reducer is a kind of unique properties, pollution-free, volatile new and effective water reducer solvent.Point
The how more active group of minor structure band, and polarized is stronger, containing hydroxy-acid group（-COOH）, oh group（-OH）, sulfonic group
Group（-SO3H）Deng.After high-salt wastewater adds carboxylic acid group's water reducer, the carboxyl of water reducer, hydroxyl, sulfonic group etc. are formed with hydrone
Hydrogen bond association, forms saline crystallization and separates out, and salt crystalloid is reclaimed, can be used as product, such as Na2SO4（Natrii Sulfas product）.
In addition, separate out saline crystallization separating with former high-salt wastewater, the salt concentration of high-salt wastewater, high-salt wastewater are substantially reduced
Effectively purified, the intractability of waste water is substantially reduced.
Further, Jing dehydration after waste water can Jing vacuum fractionations water reducer is separated, carboxylic acid group's water reducer is circulated
Utilize, more economical environmental protection.
Claims (3)
1. formula high-salt wastewater purification technique is crystallized, it is characterised in that：High-salt wastewater and water reducer are sent to into reactor first（1）It is interior by
Agitator（2）Reaction is thoroughly mixed, then by elevator pump（3）It is extracted into centrifuge（4）, by centrifuge（4）Separate salt knot
Brilliant and residual liquid.
2. crystallization formula high-salt wastewater purification technique according to claim 1, it is characterised in that：Saline crystallization is from centrifuge
（4）Upper discharge, residual liquid enter liquid storing barrel（5）, then by delivery pump（6）It is extracted into heater（7）In heated, enter after heating
Vacuum fractionation device（8）Vacuum fractionation is carried out, water reducer and recycle-water is isolated.
3. crystallization formula high-salt wastewater purification technique according to claim 1, it is characterised in that：The water reducer is carboxylic acid group
Water reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263131.4A CN106587216A (en) | 2016-12-30 | 2016-12-30 | Crystallization type high-salinity waste water purifying technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611263131.4A CN106587216A (en) | 2016-12-30 | 2016-12-30 | Crystallization type high-salinity waste water purifying technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106587216A true CN106587216A (en) | 2017-04-26 |
Family
ID=58581698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611263131.4A Pending CN106587216A (en) | 2016-12-30 | 2016-12-30 | Crystallization type high-salinity waste water purifying technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106587216A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07116644A (en) * | 1993-08-31 | 1995-05-09 | Eiichi Tashiro | Solidified agent for water treatment |
| CN104114499A (en) * | 2012-02-03 | 2014-10-22 | 姜锡雄 | Crystallization reaction apparatus for recovering resources |
-
2016
- 2016-12-30 CN CN201611263131.4A patent/CN106587216A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07116644A (en) * | 1993-08-31 | 1995-05-09 | Eiichi Tashiro | Solidified agent for water treatment |
| CN104114499A (en) * | 2012-02-03 | 2014-10-22 | 姜锡雄 | Crystallization reaction apparatus for recovering resources |
Non-Patent Citations (3)
| Title |
|---|
| 张巨松 等主编: "《泡沫混凝土》", 31 January 2016 * |
| 杜彩云 等主编: "《有机化学》", 31 December 2015 * |
| 高书宝 等: "晶相转化法资源化处理高盐、高有机物废水实验", 《盐业与化工》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170426 |