CN107381746A - A kind of method for being removed in waste water and reclaiming copper - Google Patents
A kind of method for being removed in waste water and reclaiming copper Download PDFInfo
- Publication number
- CN107381746A CN107381746A CN201710733887.9A CN201710733887A CN107381746A CN 107381746 A CN107381746 A CN 107381746A CN 201710733887 A CN201710733887 A CN 201710733887A CN 107381746 A CN107381746 A CN 107381746A
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- CN
- China
- Prior art keywords
- copper
- waste water
- kocide
- cupric oxide
- sufficiently stirred
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The present invention relates to a kind of removal of Cu in waste water and recovery method, available for the removal and recycling of Cu in waste water, belongs to environmental technology field.This method is that cupric oxide or Kocide SD are added first in copper-containing wastewater, it is sufficiently stirred, make the anion corresponding with its of the copper in waste water with cupric oxide or Kocide SD reaction generation basic salt, then separation of solid and liquid, the copper in waste water and corresponding anion is set together to be removed from waste water, waste water can smoothly carry out follow-up biochemical treatment.The basic salt that separation of solid and liquid obtains adds sodium hydroxide solution and is sufficiently stirred, and it is transformed back into cupric oxide or Kocide SD, is recirculated back to for previous step, unnecessary copper can recycle.This method has the characteristics that while removes anions and canons, without medicament residual, remove thoroughly, do not influence subsequent biochemical processing, cost is low, process is simple, easily recycling, secondary pollution will not be produced, be well suited for the processing of copper-containing wastewater.
Description
Technical field
The present invention relates to a kind of removal of Cu in waste water and recovery method, removal and recovery available for copper in copper-containing wastewater
Utilize, belong to environmental technology field.
Background technology
Copper is a kind of element needed by human, but be also a Heavy Metallic Elements, excess intake can cause human liver, kidney and
The damage of nervous system.In addition, copper-containing wastewater will also result in infringement to ecological environment into natural water.Therefore, national environmental protection
The Different Waters and the discharge standard of waste water that portion promulgates all are limited the copper content in water, and the higher waste water of copper content must go to
Except copper therein can be only achieved the requirement of standard.
Waste water copper removal in most cases at present, general use add alkali or sulphide process in a manner of precipitating by copper
Removed from waste water, or use the method for replacing such as iron, aluminium to remove copper from waste water in a manner of simple substance.But these methods can
Salt or other metals are remained in water body, these salts and other metals can suppress the growth of the biochemical bacteria in biochemical treatment,
So as to more difficult to follow-up biochemical treatment.Therefore, seek it is a kind of can remove in addition recovery waste water in copper, again will not be
The method of wastewater treatment of other compositions is remained in waste water, is very necessary.
The content of the invention
Many heavy metal ion such as copper, nickel, lead plasma have the tendency of to generate basic salt, these basic salt one in water
As be changed into hydroxide or oxide at a high ph, at low ph values again become basic salt again.And the transformation of the basic salt of copper
Progress is particularly susceptible again, and these transformations can be used to lower reactional equation and represent：
3CuO↓+CuCl2+3H2O=2Cu2(OH)3Cl↓
Cu2(OH)3Cl ↓+NaOH=2CuO ↓+NaCl+2H2O
3Cu(OH)2↓+Cu(NO3)2=2Cu2(OH)3NO3↓
Cu2(OH)3NO3↓+NaOH=2Cu (OH)2+NaNO3↓
Therefore, cupric oxide or Kocide SD can be added in copper-containing wastewater, are sufficiently stirred, make the copper in waste water right with its
The anion answered together enters in the basic salt solid phase of generation, and separation of solid and liquid can be such that copper and its anion is together gone from waste water
Remove, do not leave any medicament residual.And basic salt can be with regenerating after alkali process, copper can also reclaim.
This method is exactly that cupric oxide or Kocide SD are added first in copper-containing wastewater, is sufficiently stirred, makes the copper in waste water
Anion corresponding with its with cupric oxide or Kocide SD reaction generation basic salt, then separation of solid and liquid, make copper in waste water and
Corresponding anion together removes from waste water, without leaving salinity or other medicaments residual, waste water is smoothly entered
The follow-up biochemical treatment of row.Isolated basic salt adds sodium hydroxide solution and is sufficiently stirred, make its transform back into cupric oxide or
Kocide SD, then separation of solid and liquid, rinsing, obtained cupric oxide or Kocide SD be able to can be reclaimed with reuse, unnecessary copper.
Therefore this method can be divided into following steps：
(1) cupric oxide or Kocide SD, are being prepared
(2), under conditions of being sufficiently stirred, the cupric oxide prepared or Kocide SD are added in copper-containing wastewater.
(3), separation of solid and liquid, liquid phase enter follow-up biochemical treatment, solid phase with regeneration cycle after alkali process be back to step (2) or
Recycle cupric oxide or Kocide SD.
This method have simultaneously remove anions and canons, without medicament residual, remove thoroughly, do not influence subsequent biochemical processing, into
This is low, process is simple, easily recycles, will not produce the features such as secondary pollution, is well suited for the processing of copper-containing wastewater.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
Embodiment 1：
The containing copper chloride waste water copper content in certain mine is 2 g/l, pH 4.8, and its handling process is as follows：.
(1) 10% copper chloride solution, is added in the sodium hydroxide solution in the case of being sufficiently stirred 10%, is reached with pH value
10.0 be terminal, generation cupric oxide precipitation, rinses, filtering, obtains oxidizing aqueous copper.
(2), the cupric oxide prepared as stated above is being added in copper-containing wastewater in the case of being sufficiently stirred, is controlling the oxygen of addition
The amount ratio for changing the amount of the material of copper and the material of Cu in waste water is 1:5, then two hours being sufficiently stirred.
(3), separation of solid and liquid, obtained solid phase are being added in 10% sodium hydroxide solution in the case of being sufficiently stirred, control
Terminal pH is 10.0, filtering, rinsing, and obtained cupric oxide, which is recirculated back to, to be used step (2) or recycle.
(4), the waste water after separation of solid and liquid can be directly entered follow-up biochemical treatment..
According to above-mentioned steps for copper removal Treatment of Copper waste water, copper content is reduced to 0.4 mg/litre after processing, contains after subsequent biochemical processing
Amount of copper is reduced to below 0.3 mg/litre, can qualified discharge.
Embodiment 2：
The copper content containing copper nitrate waste water of certain smeltery is 2.5 g/l, pH 4.5, and its handling process is as follows：
(1) 5% sodium hydroxide solution, is slowly added into 5% copper nitrate solution in the case of being sufficiently stirred, is reached with pH value
9.0 be terminal, generation Kocide SD precipitation, rinses, filtering, obtains aqueous Kocide SD.
(2), the Kocide SD prepared as stated above is being added in copper-containing wastewater in the case of being sufficiently stirred, is controlling addition
The amount of the material of Kocide SD and the amount of the material of Cu in waste water are 1:5, then one and a half hours be sufficiently stirred.
(3), separation of solid and liquid, obtained solid phase add water slurrying, and 5% sodium hydroxide is slowly added into the case where being sufficiently stirred
Solution, it is 9.0 to control terminal pH, filtering, rinsing, and obtained Kocide SD circulation is back to use step (2) or recovery again.
(4), the waste water after separation of solid and liquid can be directly entered follow-up biochemical treatment..
According to above-mentioned steps for copper removal Treatment of Copper waste water, copper content is reduced to 0.3 mg/litre after processing, can after subsequent biochemical processing
Qualified discharge.
Embodiment 3：
The sulfur-bearing acid copper waste water copper content of certain Copper Material Factory is 1.5 g/l, pH 5.0, its handling process is as follows：
(1) 10% copper-bath, is added in the sodium hydroxide solution in the case of being sufficiently stirred 10%, is reached with pH value
10.0 be terminal, generation cupric oxide precipitation, rinses, filtering, obtains oxidizing aqueous copper.
(2), the cupric oxide prepared as stated above is being added in copper-containing wastewater in the case of being sufficiently stirred, is controlling the oxygen of addition
The amount for changing the amount of the material of copper and the material of Cu in waste water is 1:5, then two hours being sufficiently stirred.
(3), separation of solid and liquid, obtained solid phase are being added in 10% sodium hydroxide solution in the case of being sufficiently stirred, control
Terminal pH is 10.0, and filtering, rinsing, obtained cupric oxide return circulation and uses step (2) or recovery again.
(4), the waste water after separation of solid and liquid can be directly entered follow-up biochemical treatment..
According to above-mentioned steps for copper removal Treatment of Copper waste water, copper content is reduced to 0.35 mg/litre after processing, contains after subsequent biochemical processing
Amount of copper is reduced to below 0.3 mg/litre, can qualified discharge.
Embodiment described above only expresses the preferred embodiment of the present invention, it is impossible to is interpreted as to patent model of the present invention
The limitation enclosed, therefore the present invention is not limited thereto specific flow.Those skilled in the art's technique according to the invention scheme and
Design, various modifications and improvements can be made, these belong to protection scope of the present invention.So all weigh according to the present invention
The other embodiment that sharp claimed range is drawn, the scope that the present invention covers all should be belonged to.
Claims (3)
1. a kind of method for being removed in waste water and recycling copper, it is characterised in that comprise the following steps：
(1) cupric oxide or Kocide SD, are prepared with soluble copper salt and sodium hydroxide；
(2), under conditions of being sufficiently stirred, the cupric oxide prepared or Kocide SD are added in copper-containing wastewater；
(3), separation of solid and liquid, liquid phase enter follow-up biochemical treatment, regenerate and be recycled into for step (2) after solid phase alkali process
Or recycle cupric oxide or Kocide SD.
2. the method according to claim 11, it is characterized in that：Described soluble copper salt is copper chloride, copper sulphate, copper nitrate
Or other soluble copper salts.
3. the method according to claim 11, it is characterized in that：The existing way of Cu in waste water is copper chloride, copper sulphate, nitric acid
One or more of mixtures of copper or other soluble copper salts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710733887.9A CN107381746A (en) | 2017-08-23 | 2017-08-23 | A kind of method for being removed in waste water and reclaiming copper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710733887.9A CN107381746A (en) | 2017-08-23 | 2017-08-23 | A kind of method for being removed in waste water and reclaiming copper |
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| CN107381746A true CN107381746A (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710733887.9A Pending CN107381746A (en) | 2017-08-23 | 2017-08-23 | A kind of method for being removed in waste water and reclaiming copper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112758958A (en) * | 2020-12-21 | 2021-05-07 | 贵州红星电子材料有限公司 | Method for removing chloride ions in sodium sulfate solution |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195497A (en) * | 2006-12-04 | 2008-06-11 | 沈祖达 | Process for producing cupric hydroxide or cupric oxide |
| CN101293688A (en) * | 2007-04-26 | 2008-10-29 | 燿华电子股份有限公司 | Processing method for generating highly copper containing sewage sludge with copper containing wastewater or waste liquor |
| CN102190326A (en) * | 2010-03-05 | 2011-09-21 | 昶昕实业股份有限公司 | Methods for recovering copper from copper-containing waste liquor |
| CN102815818A (en) * | 2012-08-07 | 2012-12-12 | 华南理工大学 | Method of removing arsenic from printed circuit board acid etching exhausted liquid |
-
2017
- 2017-08-23 CN CN201710733887.9A patent/CN107381746A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195497A (en) * | 2006-12-04 | 2008-06-11 | 沈祖达 | Process for producing cupric hydroxide or cupric oxide |
| CN101293688A (en) * | 2007-04-26 | 2008-10-29 | 燿华电子股份有限公司 | Processing method for generating highly copper containing sewage sludge with copper containing wastewater or waste liquor |
| CN102190326A (en) * | 2010-03-05 | 2011-09-21 | 昶昕实业股份有限公司 | Methods for recovering copper from copper-containing waste liquor |
| CN102815818A (en) * | 2012-08-07 | 2012-12-12 | 华南理工大学 | Method of removing arsenic from printed circuit board acid etching exhausted liquid |
Non-Patent Citations (1)
| Title |
|---|
| 孙传尧 主编: "《选矿工程师手册 第1册》", 31 March 2015, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112758958A (en) * | 2020-12-21 | 2021-05-07 | 贵州红星电子材料有限公司 | Method for removing chloride ions in sodium sulfate solution |
| CN112758958B (en) * | 2020-12-21 | 2023-03-07 | 贵州红星电子材料有限公司 | Method for removing chloride ions in sodium sulfate solution |
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Application publication date: 20171124 |