CN105800848A - Comprehensive utilization method for chemical nickel-plating concentrated liquid wastewater - Google Patents
Comprehensive utilization method for chemical nickel-plating concentrated liquid wastewater Download PDFInfo
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- CN105800848A CN105800848A CN201510495706.4A CN201510495706A CN105800848A CN 105800848 A CN105800848 A CN 105800848A CN 201510495706 A CN201510495706 A CN 201510495706A CN 105800848 A CN105800848 A CN 105800848A
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- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a comprehensive utilization method for chemical nickel-plating concentrated liquid wastewater. According to the invention, through an electrolysis device, most of nickel in wastewater is electrodeposited on a cathode plate, so recycling utilization of the nickel is realized; through addition of compounds like limestone and calcium chloride and improvement of a PH value of a solution, 95% or more of phosphorus-contained and organic complexes are removed; through addition of oxides, citrate and tartrate ions are further removed; and finally, through a form of heating the wastewater, and carrying out evaporating and concentrating (or blow-drying water with an air blow-out method) to eventually form solid salts, evaporated water vapor is condensed into distilled water for utilization, so the purpose of zero discharge of the wastewater is achieved.
Description
Technical field
The present invention relates to field of waste water treatment, be specifically related to a kind of chemical nickel plating dope wastewater utilization method.
Background technology
Conventional about the technology of chemical nickle-plating wastewater process, technique etc. is all or tends to process waste water, or tend to utilize, and the application we emphasize that is that the comprehensive utilization of chemical nickle-plating wastewater processes, both include utilizing and also include processing, our target is no effuent discharge, of courses the form with refuse or salt certainly having some solids and discharges or re-used.
Summary of the invention
For solving the problems referred to above, the invention provides a kind of chemical nickel plating dope wastewater utilization method.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of chemical nickel plating dope wastewater utilization method, comprises the steps:
S1, collect waste water by waste water collection tank, the waste water collected is sent into electrolysis unit, electrolysis by filter, reclaims the nickel resources in waste water；
S2, in the waste water after electrolysis, add the compound such as limestone, calcium chloride, and improve about the pH to 8-9 of solution, make orthophosphite and citrate and tartrate anion etc. form its calcium salt, filter and remove；Clearance probably can reach more than 95%, and namely most orthophosphite and citrate and tartrate anion etc. form its calcium precipitation and be removed by filtration；
S3, add appropriate oxidant, the hypophosphorous acid root making reproducibility is oxidized to phosphate radical, and form calcium salt, make citrate and tartrate ion be oxidized to inorganic matter simultaneously and exist with the form of salt or water, reach final qualified discharge level by filtering and regulate the pH of solution；
S4, the waste water acquired by step S3 is heated, evaporates and is concentrated (or use Air blowing method, dried up by water), form the form of solid salt, the water-setting of evaporation is formed distilled water and is used.
Wherein, described electrolysis unit is by cathode collector bar, anode conducting bar construction, and described cathode collector bar, anode conducting rod one end are respectively connected with commutator.
Wherein, described step S4 could alternatively be and the waste water acquired by step S3 is heated, uses Air blowing method, is dried up by water, forms the form of solid salt.
The method have the advantages that
By electrolysis unit by electrodeposition of nickel most in waste water on minus plate, it is achieved that the recycling to nickel, by the addition of the compound such as limestone, calcium chloride, and improve the PH of solution, thus eliminating the phosphorous and organic complex of more than 95%；By the addition of oxide, remove citrate and tartrate ion further；Finally by waste water being heated, evaporate and concentrates (or use Air blowing method, dried up by water), and ultimately form the form of solid salt, make evaporation water its condense into distilled water and be used, reach the purpose of no effuent discharge.
Accompanying drawing explanation
Fig. 1 is the structural representation of electrolysis unit in the embodiment of the present invention.
In figure, 1-cathode collector bar；2-anode conducting rod；3-negative electrode；4-anode.
Detailed description of the invention
In order to make objects and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Embodiments provide a kind of chemical nickel plating dope wastewater utilization method, comprise the steps:
S1, collect waste water by waste water collection tank, the waste water collected is sent into electrolysis unit, electrolysis by filter, reclaims the nickel resources in waste water；Concrete: waste water first passes through a special device, this device is placed on a fixing trough by 1-10 group anode and cathode and forms, separate with plastic dividing plate between anode and cathode, so can keep relatively larger electric current, improve efficiency, water inlet from side enter, and through electrolysis water from opposite side flow out, the inside has two groups of air stirring pipes to be placed on bottom land, leaves electrode to improve to stir with the gas of generation on electrode.Meanwhile, a waste water collection tank is needed before entering this device, it is desirable to enter back into electrolysis unit by filter.The substantial majority of nickel of water flowed out from the outlet of electrolysis unit is all electrically deposited on the minus plate of electrolysis unit, thus reaching the recycling to nickel.
S2, in the waste water after electrolysis, add the compound such as limestone, calcium chloride, and improve about the pH to 8-9 of solution, make orthophosphite and citrate and tartrate anion etc. form its calcium salt, filter and remove；Clearance probably can reach more than 95%, and namely most orthophosphite and citrate and tartrate anion etc. form its calcium precipitation and be removed by filtration.
S3, add appropriate oxidant, the hypophosphorous acid root making reproducibility is oxidized to phosphate radical, and form calcium salt, make citrate and tartrate ion be oxidized to inorganic matter simultaneously and exist with the form of salt or water, reach final qualified discharge level by filtering and regulate the pH of solution.
S4, the waste water acquired by step S3 is heated, evaporates and is concentrated (or use Air blowing method, dried up by water), form the form of solid salt, the water-setting of evaporation is formed distilled water and is used.
Described electrolysis unit is made up of cathode collector bar 1, anode conducting rod 2, and described cathode collector bar, anode conducting rod one end are respectively connected with commutator.
Described step S4 could alternatively be and the waste water acquired by step S3 is heated, uses Air blowing method, is dried up by water, forms the form of solid salt.
Originally be embodied as by electrolysis unit by electrodeposition of nickel most in waste water on minus plate, achieve the recycling to nickel, by the addition of the compound such as limestone, calcium chloride, and the PH of raising solution, thus eliminating the phosphorous and organic complex of more than 95%；By the addition of oxide, remove citrate and tartrate ion further；Finally by waste water being heated, evaporate and concentrates (or use Air blowing method, dried up by water), and ultimately form the form of solid salt, make evaporation water its condense into distilled water and be used, reach the purpose of no effuent discharge.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (3)
1. a chemical nickel plating dope wastewater utilization method, it is characterised in that comprise the steps:
S1, collect waste water by waste water collection tank, the waste water collected is sent into electrolysis unit, electrolysis by filter, reclaims the nickel resources in waste water；
S2, in the waste water after electrolysis, add the compound such as limestone, calcium chloride, and improve about the pH to 8-9 of solution, make orthophosphite and citrate and tartrate anion etc. form its calcium salt, filter and remove；Clearance probably can reach more than 95%, and namely most orthophosphite and citrate and tartrate anion etc. form its calcium precipitation and be removed by filtration；
S3, add appropriate oxidant, the hypophosphorous acid root making reproducibility is oxidized to phosphate radical, and form calcium salt, make citrate and tartrate ion be oxidized to inorganic matter simultaneously and exist with the form of salt or water, reach final qualified discharge level by filtering and regulate the pH of solution；
S4, the waste water acquired by step S3 is heated, evaporates and concentrates, form the form of solid salt, the water-setting of evaporation is formed distilled water and is used.
2. a kind of chemical nickel plating dope wastewater utilization method according to claim 1, it is characterised in that described electrolysis unit is by cathode collector bar, anode conducting bar construction, and described cathode collector bar, anode conducting rod one end are respectively connected with commutator.
3. a kind of chemical nickel plating dope wastewater utilization method according to claim 1, it is characterised in that described step S4 could alternatively be and the waste water acquired by step S3 is heated, use Air blowing method, is dried up by water, the form of formation solid salt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015100309594 | 2015-01-21 | ||
| CN201510030959 | 2015-01-21 |
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| CN105800848A true CN105800848A (en) | 2016-07-27 |
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| CN201510495706.4A Pending CN105800848A (en) | 2015-01-21 | 2015-08-12 | Comprehensive utilization method for chemical nickel-plating concentrated liquid wastewater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083559A (en) * | 2017-05-25 | 2017-08-22 | 深圳市世清环保科技有限公司 | The method of high-quality nickel is chemically electrolysed out in nickel-plating waste water |
| CN112875960A (en) * | 2021-01-25 | 2021-06-01 | 吕梁学院 | Industrial waste water heavy metal extraction element |
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| KR100758461B1 (en) * | 2001-12-19 | 2007-09-14 | 주식회사 포스코 | Method for reuse of wastewater in continuous electroplating lines |
| JP2010221131A (en) * | 2009-03-24 | 2010-10-07 | Tokyo Electric Power Co Inc:The | Neutralization treatment method and purifying method for acid waste solution |
| CN102616961A (en) * | 2012-03-29 | 2012-08-01 | 李朝林 | Method for degrading organic pollutant and recycling phosphate in chemical nickel-plating waste liquid |
| CN102874981A (en) * | 2012-09-27 | 2013-01-16 | 南京集鸿环保科技有限公司 | Zero emission online circulation treatment system for electroplated nickel containing waste water |
| CN103641208A (en) * | 2013-11-08 | 2014-03-19 | 华南理工大学 | Method for treating nickel-containing circuit board waste water in composite electrolytic tank |
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2015
- 2015-08-12 CN CN201510495706.4A patent/CN105800848A/en active Pending
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| KR100758461B1 (en) * | 2001-12-19 | 2007-09-14 | 주식회사 포스코 | Method for reuse of wastewater in continuous electroplating lines |
| JP2010221131A (en) * | 2009-03-24 | 2010-10-07 | Tokyo Electric Power Co Inc:The | Neutralization treatment method and purifying method for acid waste solution |
| CN102616961A (en) * | 2012-03-29 | 2012-08-01 | 李朝林 | Method for degrading organic pollutant and recycling phosphate in chemical nickel-plating waste liquid |
| CN102874981A (en) * | 2012-09-27 | 2013-01-16 | 南京集鸿环保科技有限公司 | Zero emission online circulation treatment system for electroplated nickel containing waste water |
| CN103641208A (en) * | 2013-11-08 | 2014-03-19 | 华南理工大学 | Method for treating nickel-containing circuit board waste water in composite electrolytic tank |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083559A (en) * | 2017-05-25 | 2017-08-22 | 深圳市世清环保科技有限公司 | The method of high-quality nickel is chemically electrolysed out in nickel-plating waste water |
| CN107083559B (en) * | 2017-05-25 | 2019-10-18 | 深圳市世清环保科技有限公司 | The method of high-quality nickel is chemically electrolysed out in nickel-plating waste water |
| CN112875960A (en) * | 2021-01-25 | 2021-06-01 | 吕梁学院 | Industrial waste water heavy metal extraction element |
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Application publication date: 20160727 |