CN105036476A - Electroplating sewage treatment method - Google Patents
Electroplating sewage treatment method Download PDFInfo
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- CN105036476A CN105036476A CN201510472875.6A CN201510472875A CN105036476A CN 105036476 A CN105036476 A CN 105036476A CN 201510472875 A CN201510472875 A CN 201510472875A CN 105036476 A CN105036476 A CN 105036476A
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- sewage
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Water Treatment By Electricity Or Magnetism (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses an electroplating sewage treatment method. The technical scheme is that the method comprises primary disinfection, primary and secondary chemical precipitation and three-time adsorption. According to the electroplating sewage treatment method, through the combination of a chemical method, a biological method and a physical method, heavy metal ions and radioactive elements in sewage are effectively removed, the harm to the human body and the environment are reduced to the largest extent, the removal rate is high, and the cost is low. Scrap iron is used for an electrochemical cell to serve as an anode and can be recycled, the environment is protected, resources are saved, and the cost is reduced. Pond cypress and penny cress are planted in a constructed wetland tank, not only can enrich and recycle heavy metals, but also can beatify the environment and purify the air. Brewing residue is fully utilized during the yeast adsorption, the waste is turned into wealth, fermented waste bacterial cells are fully utilized, and the cost is reduced. The electroplating sewage treatment method does not cause secondary pollution and is low in cost and remarkable in effect, and the sustainable development view is achieved.
Description
Technical field
The present invention relates to a kind of sewage water treatment method, particularly relate to a kind of electroplating sewerage treatment process.
Background technology
The composition of electroplating sewerage is very complicated, and except containing cyanogen (CN-) waste water and acidic and alkaline waste water, heavy metal containing sewage is the great sewage classification of Electroplating Operations potential hazard.Classify according to heavy metal element contained in heavy metal wastewater thereby, generally can be divided into containing chromium (Cr) sewage, nickeliferous (Ni) sewage, containing cadmium (Cd) sewage, cupric (Cu) sewage, containing zinc (Zn) sewage, contain gold (Au) sewage, argentiferous (Ag) sewage etc.Sewage has following characteristics: complicated component, and pollutent can be divided into inorganic pollutant and the large class of organic pollutant two; Change of water quality amplitude is large, and production waste pollutant kind is various, and COD variation factor is large; Sewage toxicity is large, containing a large amount of heavy metal ion, if not treated direct discharge can cause great pollution to surrounding body.
Summary of the invention
The object of the invention is to solve the problem, providing a kind of electroplating sewerage treatment process.
A kind of electroplating sewerage treatment process, technical scheme comprises the following steps:
(1) sewage flow to settling tank through 10 order stainless steel filter screen, adjusts pH to 9 ~ 11, add the aluminium iron polychloride of 80 ~ 85mg/L, stir with lime, leaves standstill 30 ~ 40 minutes, through 80 order stainless steel filter screen;
(2) sewage after filtering flows into electrochemical cell, and electrochemical cell take scrap iron as anode, and adjust pH to 2 ~ 3 with hydrochloric acid, make ionogen with sodium chloride solution, sewage flows out through 100 order stainless steel filter screen;
(3) effluent stream after filtering, to microorganism pond, adjusts pH to 3 ~ 5 with lime, carries out yeast absorption 6 ~ 8 hours, flows out through 100 order stainless steel filter screen;
(4) effluent stream is to sterilization pool, and adjust pH to 6.5 ~ 7.5 with lime, utilize ozone to carry out disinfection, ozone concn is 10 ~ 15mg/L, sterilizes 15 ~ 20 minutes;
(5) filter after effluent stream through artificial swamp pond, planting bed China fir and penny cress in pond, every square metre plantation 8 strains, sewage flows out through 100 order stainless steel filter screen;
(6) from sterilization pool flow out sewage enter adsorption tank, sewage is heated to 75 DEG C, through serpentine absorption after 3 ~ 4 hours, via hole diameter be 10 microns non-woven fabrics filter, discharge.
The microorganism pond of described step 3), containing Angel yeast saccharomyces cerevisiae in pond, originates as distiller's wash, through autoclaved, containing a large amount of yeast saccharomyces cerevisiae thalline.
Beneficial effect of the present invention is: electroplating sewerage treatment process provided by the invention, combine with chemical method, biological process and Physical, effectively remove the heavy metal ion in sewage and radioelement, reduce the harm to human body and environment to greatest extent, clearance is high, and cost is low; Electrochemical cell uses scrap iron as anode, can recycle, protection of the environment, economize on resources and cost to scrap iron; Planting bed China fir and penny cress in artificial swamp pond, can not only enrichment and reclaim heavy metal, can also beautify the environment, purify air; Take full advantage of distiller's wash during the absorption of yeast thalline, turn waste into wealth, make full use of fermentation fungi body, cost-saving; The present invention can not produce secondary pollution, and cost is low, Be very effective, realizes sustainable development and sees.
Embodiment
This specific embodiment is only explanation of the invention; it is not limitation of the present invention; those skilled in the art can make to the present embodiment the amendment not having creative contribution as required after reading this specification sheets, as long as but be all subject to the protection of patent law in right of the present invention.
Embodiment 1
A kind of electroplating sewerage treatment process, technical scheme comprises the following steps:
(1) sewage flow to settling tank through 10 order stainless steel filter screen, adjusts pH to 9, add the aluminium iron polychloride of 80mg/L, stir with lime, leaves standstill 30 minutes, through 80 order stainless steel filter screen;
(2) sewage after filtering flows into electrochemical cell, and electrochemical cell take scrap iron as anode, and adjust pH to 2 with hydrochloric acid, make ionogen with sodium chloride solution, sewage flows out through 100 order stainless steel filter screen;
(3) effluent stream after filtering is to microorganism pond, and distiller's wash, through autoclaved, adds in microorganism pond, containing a large amount of yeast saccharomyces cerevisiae thalline, adjusts pH to 3, carry out yeast and adsorb 6 hours with lime, flow out through 100 order stainless steel filter screen;
(4) effluent stream is to sterilization pool, and adjust pH to 6.5 with lime, utilize ozone to carry out disinfection, ozone concn is 10mg/L, sterilizes 15 minutes;
(5) filter after effluent stream through artificial swamp pond, planting bed China fir and penny cress in pond, every square metre plantation 8 strains, sewage flows out through 100 order stainless steel filter screen;
(6) from sterilization pool flow out sewage enter adsorption tank, sewage is heated to 75 DEG C, through serpentine absorption after 3 hours, via hole diameter be 10 microns non-woven fabrics filter, discharge.
Embodiment 2
A kind of electroplating sewerage treatment process, technical scheme comprises the following steps:
(1) sewage flow to settling tank through 10 order stainless steel filter screen, adjusts pH to 10, add the aluminium iron polychloride of 83mg/L, stir with lime, leaves standstill 35 minutes, through 80 order stainless steel filter screen;
(2) sewage after filtering flows into electrochemical cell, and electrochemical cell take scrap iron as anode, and adjust pH to 2.5 with hydrochloric acid, make ionogen with sodium chloride solution, sewage flows out through 100 order stainless steel filter screen;
(3) effluent stream after filtering is to microorganism pond, and distiller's wash, through autoclaved, adds in microorganism pond, containing a large amount of yeast saccharomyces cerevisiae thalline, adjusts pH to 4, carry out yeast and adsorb 7 hours with lime, flow out through 100 order stainless steel filter screen;
(4) effluent stream is to sterilization pool, and adjust pH to 7 with lime, utilize ozone to carry out disinfection, ozone concn is 13mg/L, sterilizes 17 minutes;
(5) filter after effluent stream through artificial swamp pond, planting bed China fir and penny cress in pond, every square metre plantation 8 strains, sewage flows out through 100 order stainless steel filter screen;
(6) from sterilization pool flow out sewage enter adsorption tank, sewage is heated to 75 DEG C, through serpentine absorption after 3.5 hours, via hole diameter be 10 microns non-woven fabrics filter, discharge.
Embodiment 3
A kind of electroplating sewerage treatment process, technical scheme comprises the following steps:
(1) sewage flow to settling tank through 10 order stainless steel filter screen, adjusts pH to 11, add the aluminium iron polychloride of 85mg/L, stir with lime, leaves standstill 40 minutes, through 80 order stainless steel filter screen;
(2) sewage after filtering flows into electrochemical cell, and electrochemical cell take scrap iron as anode, and adjust pH to 3 with hydrochloric acid, make ionogen with sodium chloride solution, sewage flows out through 100 order stainless steel filter screen;
(3) effluent stream after filtering is to microorganism pond, and distiller's wash, through autoclaved, adds in microorganism pond, containing a large amount of yeast saccharomyces cerevisiae thalline, adjusts pH to 5, carry out yeast and adsorb 8 hours with lime, flow out through 100 order stainless steel filter screen;
(4) effluent stream is to sterilization pool, and adjust pH to 7.5 with lime, utilize ozone to carry out disinfection, ozone concn is 15mg/L, sterilizes 20 minutes;
(5) filter after effluent stream through artificial swamp pond, planting bed China fir and penny cress in pond, every square metre plantation 8 strains, sewage flows out through 100 order stainless steel filter screen;
(6) from sterilization pool flow out sewage enter adsorption tank, sewage is heated to 75 DEG C, through serpentine absorption after 4 hours, via hole diameter be 10 microns non-woven fabrics filter, discharge.
Adopt cold atomic absorption spectrometry to survey total mercury, graphite furnace atomic absorption spectrometry surveys total cadmium, and visible spectrophotometry surveys total copper, and potassium permanganate oxidation-diphenyl carbazide spectrophotometry surveys total chromium, and atomic absorption spectrophotometry surveys total nickel.Table 1 is the disposition of the electroplating sewerage of embodiment.
The disposition of the electroplating sewerage of table 1 embodiment
| Project | Total mercury/mg/L | Total cadmium/mg/L | Total copper/mg/L | Total chromium/mg/L | Total nickel/mg/L |
| Former water | 20 | 40 | 60 | 40 | 50 |
| Embodiment 1 | 0.005 | 0.04 | 0.4 | 0.5 | 0.4 |
| Embodiment 2 | 0.004 | 0.04 | 0.3 | 0.4 | 0.3 |
| Embodiment 3 | 0.004 | 0.03 | 0.3 | 0.3 | 0.2 |
As can be seen from the data of table 1, after the sewage of plating processes by the treatment process of electroplating sewerage provided by the invention, in embodiment, the content of total mercury, total cadmium, total copper, total chromium and total nickel is all starkly lower than former water, and meet " plating pollution discharge standard ", illustrate that the treatment process of electroplating sewerage provided by the invention is feasible, effectively.
Claims (2)
1. an electroplating sewerage treatment process, is characterized in that, technical scheme comprises the following steps:
(1) sewage flow to settling tank through 10 order stainless steel filter screen, adjusts pH to 9 ~ 11, add the aluminium iron polychloride of 80 ~ 85mg/L, stir with lime, leaves standstill 30 ~ 40 minutes, through 80 order stainless steel filter screen;
(2) sewage after filtering flows into electrochemical cell, and electrochemical cell take scrap iron as anode, and adjust pH to 2 ~ 3 with hydrochloric acid, make ionogen with sodium chloride solution, sewage flows out through 100 order stainless steel filter screen;
(3) effluent stream after filtering, to microorganism pond, adjusts pH to 3 ~ 5 with lime, carries out yeast absorption 6 ~ 8 hours, flows out through 100 order stainless steel filter screen;
(4) effluent stream is to sterilization pool, and adjust pH to 6.5 ~ 7.5 with lime, utilize ozone to carry out disinfection, ozone concn is 10 ~ 15mg/L, sterilizes 15 ~ 20 minutes;
(5) filter after effluent stream through artificial swamp pond, planting bed China fir and penny cress in pond, every square metre plantation 8 strains, sewage flows out through 100 order stainless steel filter screen;
(6) from sterilization pool flow out sewage enter adsorption tank, sewage is heated to 75 DEG C, through serpentine absorption after 3 ~ 4 hours, via hole diameter be 10 microns non-woven fabrics filter, discharge.
2. a kind of electroplating sewerage treatment process as claimed in claim 1, is characterized in that, the microorganism pond of described step 3), containing Angel yeast saccharomyces cerevisiae in pond, originates as distiller's wash, through autoclaved, containing a large amount of yeast saccharomyces cerevisiae thalline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510472875.6A CN105036476A (en) | 2015-08-05 | 2015-08-05 | Electroplating sewage treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510472875.6A CN105036476A (en) | 2015-08-05 | 2015-08-05 | Electroplating sewage treatment method |
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| CN105036476A true CN105036476A (en) | 2015-11-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106145288A (en) * | 2016-08-11 | 2016-11-23 | 李宝全 | A kind of without muriatic water purification agent |
| CN112321038A (en) * | 2020-09-27 | 2021-02-05 | 江苏骅通船舶工程设备有限公司 | Environment-friendly ballast water treatment system for ship and treatment method thereof |
| WO2023196226A1 (en) * | 2022-04-08 | 2023-10-12 | Macdermid, Incorporated | Electrochemical oxidation of amine complexants in waste streams from electroplating processes |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772659A (en) * | 2005-10-09 | 2006-05-17 | 徐祖信 | Combined process of reinforced biochemical flocculation and artificial wet land treatment of sewage |
| CN101302073A (en) * | 2008-06-13 | 2008-11-12 | 吴江市运东邱舍污水处理有限公司 | Advanced treatment process for electroplating sewage |
| CN101337747A (en) * | 2008-08-07 | 2009-01-07 | 常卫平 | Automation control electroplating waste processing process |
| CN102745862A (en) * | 2012-06-26 | 2012-10-24 | 张明荣 | Sewage treatment method |
| CN104276735A (en) * | 2014-11-04 | 2015-01-14 | 国家电网公司 | Environment-friendly technology used for purifying electroplating sewage |
| CN104529098A (en) * | 2015-01-22 | 2015-04-22 | 湖南天炽农业科技发展有限公司 | Sewage treatment system |
-
2015
- 2015-08-05 CN CN201510472875.6A patent/CN105036476A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772659A (en) * | 2005-10-09 | 2006-05-17 | 徐祖信 | Combined process of reinforced biochemical flocculation and artificial wet land treatment of sewage |
| CN101302073A (en) * | 2008-06-13 | 2008-11-12 | 吴江市运东邱舍污水处理有限公司 | Advanced treatment process for electroplating sewage |
| CN101337747A (en) * | 2008-08-07 | 2009-01-07 | 常卫平 | Automation control electroplating waste processing process |
| CN102745862A (en) * | 2012-06-26 | 2012-10-24 | 张明荣 | Sewage treatment method |
| CN104276735A (en) * | 2014-11-04 | 2015-01-14 | 国家电网公司 | Environment-friendly technology used for purifying electroplating sewage |
| CN104529098A (en) * | 2015-01-22 | 2015-04-22 | 湖南天炽农业科技发展有限公司 | Sewage treatment system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106145288A (en) * | 2016-08-11 | 2016-11-23 | 李宝全 | A kind of without muriatic water purification agent |
| CN112321038A (en) * | 2020-09-27 | 2021-02-05 | 江苏骅通船舶工程设备有限公司 | Environment-friendly ballast water treatment system for ship and treatment method thereof |
| WO2023196226A1 (en) * | 2022-04-08 | 2023-10-12 | Macdermid, Incorporated | Electrochemical oxidation of amine complexants in waste streams from electroplating processes |
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Application publication date: 20151111 |