CN102079597B - Method for removing copper ions in sewage - Google Patents
Method for removing copper ions in sewage Download PDFInfo
- Publication number
- CN102079597B CN102079597B CN 201110051653 CN201110051653A CN102079597B CN 102079597 B CN102079597 B CN 102079597B CN 201110051653 CN201110051653 CN 201110051653 CN 201110051653 A CN201110051653 A CN 201110051653A CN 102079597 B CN102079597 B CN 102079597B
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- Prior art keywords
- sewage
- copper ions
- reactive tank
- mixing reactor
- dividing plate
- 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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Links
- 239000010865 sewage Substances 0.000 title claims abstract description 73
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910001431 copper ion Inorganic materials 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 20
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 20
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 239000003513 alkali Substances 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000010802 sludge Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000005189 flocculation Methods 0.000 abstract description 3
- 230000016615 flocculation Effects 0.000 abstract description 3
- 239000002244 precipitate Substances 0.000 abstract description 3
- 238000000151 deposition Methods 0.000 abstract 1
- 239000012716 precipitator Substances 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 7
- 239000010949 copper Substances 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 229920002627 poly(phosphazenes) Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for removing copper ions in sewage, comprising the following steps of: (1) introducing the sewage in a sewage pool into a mixing reactor, adding alkali into the mixing reactor, and uniformly stirring to enable the copper ions in the sewage to react with the alkali to form a precipitate containing copper ions; (2) introducing the sewage in the mixing reactor into a reaction tank, adding poly aluminum chloride and polyacrylamide into the reaction tank, and uniformly stirring to enable the precipitate containing the copper ions to generate floccules under the flocculation of the poly aluminum chloride and the polyacrylamide; and (3) sequentially depositing via a precipitator and filtering via a filter. According to the method, the effort of removing the copper ions in the sewage is intensified, the sewage containing the copper ions with the concentration being lower than the national requirement is discharged, and thus the pollution of the copper ions discharged with the sewage on the surrounding environment is eliminated.
Description
Technical field
The invention belongs to sewage treatment area, belong to especially a kind of method of removing copper ions in sewage.
Technical background
At present, large amount of sewage enters rivers, and river has been caused pollution, and water pollution is mainly that pH value exceeds standard, and surpasses national III class water quality standard, the water quality meta-acid; Cupric ion does not surpass national III class water quality standard, but surpasses national fishery water standard.Therefore, be necessary to research and develop a kind of sewage disposal device, strengthen the dynamics of removing to copper ions in sewage, and realize cupric ion lower than the concentration discharge of national requirements, and then eliminate cupric ion with the pollution of wastewater disposition to surrounding environment.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind ofly can effectively remove cupric ion in sewage, reduce pollute, the method for removal copper ions in sewage that the feature of environmental protection is strong.
The technical scheme of technical solution problem of the present invention is: a kind of method of removing copper ions in sewage, and the method comprises the step of following order:
(1) sewage in sewage lagoon is introduced mixing reactor, add alkali and stir in mixing reactor, make the throw out of cupric ion and alkali reaction formation copper ions in sewage;
(2) sewage in mixing reactor is introduced reactive tank, and add poly aluminium chloride, polyacrylamide and stir in reactive tank, make the throw out of copper ions produce floc sedimentation under the throwing out of poly aluminium chloride, polyacrylamide;
(3) filter through settling vessel precipitation, strainer successively.
With sump pump, the sewage in sewage lagoon is pumped in mixing reactor, be provided for the under meter that the discharge of sewage is measured between sump pump and mixing reactor.
The centre of described reactive tank arranges dividing plate, dividing plate is divided into left and right reactive tank with reactive tank, agitator all is set in left and right reactive tank, opening is offered in the upper end of dividing plate, add respectively poly aluminium chloride, polyacrylamide in left and right reactive tank, agitator fully stirs the mixture in left and right reactive tank.
Described settling vessel adopts tube settler, the inherent body refuse suspended layer of tube settler top mounted angle is the inclined tube of 60 degree, make the throw out in sewage slide to the body refuse suspended layer at action of gravitation, then sink to sludge hopper, enter sludge sump by shore pipe, supernatant liquor rises to gradually header and discharges, and enters air supporting.
The pneumatically supported sewage of flowing through enters strainer and filters, and described strainer adopts mechanical filter, and the sewage after filtering through strainer enters clean water basin through intermediate pool.
The second order reaction groove is set between air supporting and mechanical filter, the centre of described second order reaction groove arranges dividing plate, dividing plate is divided into left and right reactive tank with reactive tank, agitator all is set in left and right reactive tank, opening is offered in the upper end of dividing plate, add respectively poly aluminium chloride, polyacrylamide in left and right reactive tank, agitator fully stirs the mixture in left and right reactive tank.
The pH value proofing unit is set in described reactive tank, intermediate pool and clean water basin.
With spiral pump, the mud in sludge sump is transferred to plate-and-frame filter press, by plate-and-frame filter press, the sewage in mud is extracted.
The present invention compared with prior art, under alkaline condition, cupric ion can generate indissoluble, stable throw out, and then the copper heavy metal ion in removal sewage, again by adopting polyphosphazene polymer aluminum chloride, polyacrylamide to carrying out flocculation reaction through the sewage that adds after alkali, pass through again the processing of follow-up equipment, finally realize separating of water and mud.The present invention strengthens the dynamics of removing to copper ions in sewage, and realizes cupric ion lower than the concentration discharge of national requirements, and then eliminates cupric ion with the pollution of wastewater disposition to surrounding environment.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
In Fig. 1,1 is that sewage lagoon, 2 is that under meter, 3 is that mixing reactor, 4 is that reactive tank, 5 is that tube settler, 6 is that air supporting, 7 is that sludge sump, 8 is that second order reaction groove, 9 is that mechanical filter, 10 is that intermediate pool, 11 is clean water basin.
Embodiment
The present invention is described in detail below in conjunction with embodiment.
As shown in Figure 1:
A kind of method of removing copper ions in sewage, the method comprises the step of following order: (1) introduces mixing reactor 3 with the sewage in sewage lagoon 1, add alkali and stir in mixing reactor 3, making cupric ion in sewage and alkali reaction form the throw out of copper ions; (2) sewage in mixing reactor 3 is introduced reactive tank 4, and add poly aluminium chloride, polyacrylamide and stir in reactive tank 4, make the throw out of copper ions produce floc sedimentation under the throwing out of poly aluminium chloride, polyacrylamide; (3) filter through settling vessel precipitation, strainer successively.
With sump pump, the sewage in sewage lagoon 1 is pumped in mixing reactor 3, be provided under meter 2 that the discharge of sewage is measured between sump pump and mixing reactor 3,2 pairs of discharges of sewage of under meter are measured, be convenient to the control to the sewage dosing, the effect of mixing reactor 3 is that alkali is joined sewage.Under alkaline condition, cupric ion can generate indissoluble, stable throw out, according to neutralization reaction precipitation principle, use the cupric ion in NaOH and sewage to react, form the throw out of copper ions, and then remove the copper heavy metal ion in sewage, its reaction formula is as follows:
Cu
2++2OH
1-＝Cu(OH)
2↓
The centre of described reactive tank 4 arranges dividing plate, dividing plate is divided into left and right reactive tank 4 with reactive tank 4, the interior agitator that all arranges of left and right reactive tank 4, opening is offered in the upper end of dividing plate, at interior poly aluminium chloride, the polyacrylamide of adding respectively of left and right reactive tank 4, agitator fully stirs the mixture in left and right reactive tank 4.
At first adopt poly aluminium chloride to Cu (OH)
2Throw out flocculates.Poly aluminium chloride (PAC) is a kind of poly-hydroxy, has the cationic inorganic polymer flocculant of multinuclear complexing body, and soluble in water.In hydrolysate after poly aluminium chloride dissolving, what mainly play throwing out is multinuclear poly-hydroxy yang collaterals ion, and this positively charged ion has electrical neutralization and absorption bridging effect, and the winding net with precipitation of hydroxide is caught effect.
Next adopts polyacrylamide that the reactant that poly aluminium chloride produces is further flocculated, and reaches to help to gaze fixedly at.Polyacrylamide (PAM) is high molecular weight water soluble polymer, is insoluble to most of organic solvents, has good flocculence, can reduce the friction resistance between liquid, can make suspended matter by charge neutrality, the bridge formation adsorption.By adopting polyphosphazene polymer aluminum chloride, polyacrylamide to carrying out flocculation reaction through the sewage that adds after alkali, then pass through the processing of follow-up equipment, finally realize separating of water and mud.
Described settling vessel adopts tube settler 5, the inherent body refuse suspended layer of tube settler 5 top mounted angle is the inclined tube of 60 degree, make the throw out in sewage slide to the body refuse suspended layer at action of gravitation, then sink to sludge hopper, enter sludge sump 7 by shore pipe, supernatant liquor rises to gradually header and discharges, and enters air supporting 6.The sewage of air supporting 6 of flowing through enters strainer and filters, described strainer adopts mechanical filter 9, and the sewage after filtering through strainer enters clean water basin 11 through intermediate pool 10, and wherein most of water continues on for producing, redundance is discharged from outside factory, and realizes non-pollution discharge.80% suspended substance is completed separating of mud and water at this.Mechanical filter 9 is mainly to utilize filler to reduce turbidity in water, hold back to smell except the middle suspended substance that anhydrates, organism, colloidal particles, microorganism, chlorine and distinguish the flavor of and the part heavy metal ion, this equipment mainly plays safety effect at this, and the water after processing is better purified at this.
Air supporting 6 is mainly to utilize the small gas robe of high dispersing as carrier, adheres to the suspended contaminant in sewage, makes its buoyancy greater than gravity and resistance, thereby make pollutent float up to the water surface, form foam, then utilization is scraped slag equipment and is scraped foam-expelling from the water surface, realizes that solid-liquid or liquid liquid separate.Air supporting 6 is at the remaining suspended substance of this main further removal.
Between air supporting 6 and mechanical filter 9, second order reaction groove 8 is set, the centre of described second order reaction groove 8 arranges dividing plate, dividing plate is divided into left and right second order reaction groove with second order reaction groove 8, in left and right second order reaction groove, agitator is set all, opening is offered in the upper end of dividing plate, add respectively poly aluminium chloride, polyacrylamide in left and right second order reaction groove, agitator fully stirs the mixture in left and right second order reaction groove.In the situation that tube settler 5 normal operations, second order reaction groove 8 need not dosing and stirring, when tube settler 5 need to be safeguarded, second order reaction groove 8 carries out dosing and stirring, and come into operation, thereby realize the processing to sewage, air supporting 6, the mechanical filter interim tube settler 5 that substitutes 9 this moments are to satisfy the quantity-produced actual needs.
The interior pH value proofing unit that arranges of described reactive tank 4, intermediate pool 10 and clean water basin 11.In order to guarantee that cupric ion well precipitates, and need to automatically adjust to the pH value in sewage treatment process under alkaline environment.The PLC controller carries out internal arithmetic according under meter 2 and on-the-spot PH real time data, then regulates chemicals dosing plant dosing dosage.According to the cupric ion reaction principle, need to guarantee that the sewage in reactive tank 4 possesses alkaline environment, therefore, the PLC controller is according to the PH detected value in reactive tank 4, control the input amount of alkali lye by Frequency Converter Control alkali volume pump, guarantee the alkaline environment that reactive tank 2 possesses to be needed, make and remove the cupric ion best results.The value of feedback of the pH value proofing unit by intermediate pool 10, clean water basin 11, and through PLC controller internal calculation, regulate by frequency transformer the input amount that the alkali volume pump is controlled alkali lye, guarantee that the pH value of clean water basin 11 changes between 6～9.With spiral pump, the mud in sludge sump 7 is transferred to plate-and-frame filter press, by plate-and-frame filter press, the sewage in mud is extracted, be convenient to the mud outward transport.
Claims (7)
1. method of removing copper ions in sewage, the method comprises the step of following order:
(1) sewage in sewage lagoon is introduced mixing reactor, add alkali and stir in mixing reactor, make the throw out of cupric ion and alkali reaction formation copper ions in sewage;
(2) sewage in mixing reactor is introduced reactive tank, and add poly aluminium chloride, polyacrylamide and stir in reactive tank, make the throw out of copper ions produce floc sedimentation under the throwing out of poly aluminium chloride, polyacrylamide;
(3) filter through settling vessel precipitation, strainer successively;
Described settling vessel adopts tube settler, the inherent body refuse suspended layer of tube settler top mounted angle is the inclined tube of 60 degree, make the throw out in sewage slide to the body refuse suspended layer at action of gravitation, then sink to sludge hopper, enter sludge sump by shore pipe, supernatant liquor rises to gradually header and discharges, and enters air-floating apparatus.
2. the method for removal copper ions in sewage according to claim 1, is characterized in that: with sump pump, the sewage in sewage lagoon is pumped in mixing reactor, be provided for the under meter that the discharge of sewage is measured between sump pump and mixing reactor.
3. the method for removal copper ions in sewage according to claim 1, it is characterized in that: the centre of described reactive tank arranges dividing plate, dividing plate is divided into left and right reactive tank with reactive tank, agitator all is set in left and right reactive tank, opening is offered in the upper end of dividing plate, add respectively poly aluminium chloride, polyacrylamide in left and right reactive tank, agitator fully stirs the mixture in left and right reactive tank.
4. the method for removal copper ions in sewage according to claim 1, it is characterized in that: the sewage of the air-floating apparatus of flowing through enters strainer and filters, described strainer adopts mechanical filter, and the sewage after filtering through strainer enters clean water basin through intermediate pool.
5. the method for removal copper ions in sewage according to claim 4, it is characterized in that: the second order reaction groove is set between air-floating apparatus and mechanical filter, the centre of described second order reaction groove arranges dividing plate, dividing plate is divided into left and right second order reaction groove with reactive tank, in left and right second order reaction groove, agitator is set all, opening is offered in the upper end of dividing plate, add respectively poly aluminium chloride, polyacrylamide in left and right second order reaction groove, agitator fully stirs the mixture in left and right second order reaction groove.
6. the method for removal copper ions in sewage according to claim 4, is characterized in that: the pH value detection device is set in described reactive tank, intermediate pool and clean water basin.
7. the method for removal copper ions in sewage according to claim 1, is characterized in that: with spiral pump, the mud in sludge sump is transferred to plate-and-frame filter press, by plate-and-frame filter press, the sewage in mud is extracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110051653 CN102079597B (en) | 2011-03-04 | 2011-03-04 | Method for removing copper ions in sewage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110051653 CN102079597B (en) | 2011-03-04 | 2011-03-04 | Method for removing copper ions in sewage |
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| CN102079597A CN102079597A (en) | 2011-06-01 |
| CN102079597B true CN102079597B (en) | 2013-06-05 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103387296B (en) * | 2012-05-09 | 2016-08-31 | 上海问鼎环保科技有限公司 | A kind of method removing chemical plating copper ions in sewage |
| CN102863100B (en) * | 2012-10-08 | 2014-07-30 | 广东嘉元科技股份有限公司 | Electrolytic copper foil production wastewater treatment process |
| CN103043826A (en) * | 2012-12-07 | 2013-04-17 | 常州大学 | Method for removing copper from sewage |
| CN102964008A (en) * | 2012-12-11 | 2013-03-13 | 常州大学 | Method for removing copper in sewage |
| CN103145227A (en) * | 2013-03-25 | 2013-06-12 | 西安德奇水处理有限公司 | Flocculation treatment method for copper-containing wastewater |
| CN105130063A (en) * | 2015-09-28 | 2015-12-09 | 广西华锡集团股份有限公司再生资源分公司 | Method for reducing content of cupric ion in waste water discharged from tailings pond |
| CN107986526A (en) * | 2017-11-30 | 2018-05-04 | 北京天维宝辰科贸有限公司 | The recovery and treatment method of copper ion in a kind of HEDP copper plating wastewaters |
| CN111792804A (en) * | 2020-06-30 | 2020-10-20 | 安徽雷克环境科技有限公司 | Sediment pollutant removal system |
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| 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 |
| CN101357809A (en) * | 2007-08-02 | 2009-02-04 | 蔡敏行 | Zero sludge and resource handling arrangement and recovery method of heavy metal waste water |
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2011
- 2011-03-04 CN CN 201110051653 patent/CN102079597B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480407A (en) * | 2002-09-06 | 2004-03-10 | 台湾积体电路制造股份有限公司 | Method for treating wastewater form mechanic grinding copper, and its appts |
| 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 |
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| CN101215059A (en) * | 2008-01-11 | 2008-07-09 | 清华大学 | Alkaline chemical deposition treatment method for overproof metal pollution in water |
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Address after: 241008 Anhui province Wuhu City Jiuhua economic and Technological Development Zone No. 8 North Road Patentee after: ANHUI TRUCHUM ADVANCED MATERIALS AND TECHNOLOGY Co.,Ltd. Address before: 241008 Anhui province Wuhu City Jiuhua economic and Technological Development Zone No. 8 North Road Patentee before: ANHUI JINGCHENG COPPER Co.,Ltd. |
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