CN104556498A - System for treating low-concentration copper-containing waste water - Google Patents

System for treating low-concentration copper-containing waste water Download PDF

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Publication number
CN104556498A
CN104556498A CN201410820408.3A CN201410820408A CN104556498A CN 104556498 A CN104556498 A CN 104556498A CN 201410820408 A CN201410820408 A CN 201410820408A CN 104556498 A CN104556498 A CN 104556498A
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CN
China
Prior art keywords
copper
electrolytic
treatment
tank
waste water
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Pending
Application number
CN201410820408.3A
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Chinese (zh)
Inventor
韦建敏
张小波
张晓蓓
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Chengdu Honghua Environmental Protection Technology Co Ltd
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Chengdu Honghua Environmental Protection Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chengdu Honghua Environmental Protection Technology Co Ltd filed Critical Chengdu Honghua Environmental Protection Technology Co Ltd
Priority to CN201410820408.3A priority Critical patent/CN104556498A/en
Publication of CN104556498A publication Critical patent/CN104556498A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The invention discloses a system for treating low-concentration copper-containing waste water. The system comprises components of a comprehensive copper-containing waste water pond, a copper-containing waste-liquid storage pot, an electrolytic deposition system, a retreatment system and a precipitation tank that are sequentially connected wherein pumps are arranged between every two adjacent components of the comprehensive copper-containing waste water pond, the copper-containing waste-liquid storage pot, the electrolytic deposition system, the retreatment system and the precipitation tank; the electrolytic deposition system comprises an electrolytic tank, a circulating tank, electrolytic anode plates, electrolytic cathode plates and an electrolyte circulating pipe, wherein a baffle is arranged between the electrolytic tank and the circulating tank, the electrolyte circulating pipe is arranged at the bottoms of the electrolytic tank and the circulating tank, and the electrolytic anode plates and the electrolytic cathode plates are respectively arranged in an electrolyte. The system is simple to operate. According to the system, electrolyte compositions in waste liquid are sufficiently utilized, a small amount of cupric ions in the waste liquid can be electrolyzed into metallic copper, the recovery rate of the cupric ions is up to 99%, and the copper contained in the treated waste water is lower than 0.05g/L, so that the system has high performance of environmental protection.

Description

A kind for the treatment of system of lower concentration copper-containing wastewater
Technical field
The invention belongs to the field of liquid waste disposal, be specifically related to a kind for the treatment of system of lower concentration copper-containing wastewater
Background technology
Along with the improvements of electron trade, the development of China's wiring board industry also broad-based recovery thereupon, but in the making processes of wiring board or circuit card, such as printed circuit board, the operations such as plating, all can produce a large amount of copper powders at work, copper particle and cupric ion, these copper powders, copper particle and cupric ion all need a large amount of cleaning water to clean, and clean after copper-containing wastewater in containing a large amount of cupric ions, can not reuse, when in water, copper content reaches 0.01mg/L, obvious restraining effect is had to self purification of water body, more than 3.0mg/L, peculiar smell can be produced, more than 15mg/L, just cannot quote, also inconvenience is processed after the waste water of these copper ions enters sewage work simultaneously, as easy as rolling off a log to environment, therefore, trade effluent has to pass through process just can reach environmental requirement.
Therefore, in order to overcome Problems existing in above-mentioned technology, devising one and can make full use of electrolyte ingredient in copper-containing wastewater, the cupric ion in waste water can be electrolyzed to produce metallic copper, and the simple a kind of Waste Water Treatment of operation of equipment
Summary of the invention
The technical problem to be solved in the present invention is the treatment system providing a kind of lower concentration copper-containing wastewater, system solves the problem problems of the prior art, can utilize the electrolyte ingredient in waste water fully, have good practical value.
In order to solve the problems of the technologies described above, the present invention realizes in the following manner:
A kind for the treatment of system of lower concentration copper-containing wastewater, comprise cupric comprehensive wastewater pond, contained waste liquid hold-up vessel, electrowinning systems, secondary treatment system and settling bath, described cupric comprehensive wastewater pond, contained waste liquid hold-up vessel, electrowinning systems, secondary treatment system is connected successively with settling bath, and be provided with water pump between each parts, described electrowinning systems comprises electrolyzer, circulation groove, electrolytic anode plate, electrolytic negative plate and circulation of elecrolyte pipe, baffle plate is provided with between electrolyzer and circulation groove, circulation of elecrolyte pipe is provided with bottom described electrolyzer and circulation groove, described electrolytic anode plate and electrolytic negative plate are all arranged in electrolytic solution.
Described settling bath is copper hydroxide settling bath, is provided with high-pressure hydraulic pump between itself and secondary treatment system.What secondary treatment system adopted is the method for acid-base neutralisation process, the reactive tank that its inside has to be filled with sodium hydroxide solution, and react after entering containing low copper waste liquid and generate copper hydroxide precipitation, copper hydroxide precipitates sends into settling bath by high-pressure hydraulic pump.
Further, also comprise treatment center of sewage, be provided with high-pressure hydraulic pump between described treatment center of sewage and secondary treatment system, and communicated by pipeline.
Compared with prior art, the beneficial effect that has of the present invention:
1, the present invention takes full advantage of the electrolyte ingredient in waste liquid, and a small amount of cupric ion in waste liquid can be electrolyzed to produce metallic copper, this operation of equipment is simple;
2, the present invention is to the rate of recovery of the cupric ion in waste liquid up to 99%, and in the waste water after process, cupric is lower than 0.05g/L, has very strong environmental-protecting performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, each mark is respectively: 1, cupric comprehensive wastewater pond, 2, contained waste liquid hold-up vessel, 3, electrowinning systems, 4, secondary treatment system, 5, settling bath, 6, treatment center of sewage, 31, electrolyzer, 32, circulation groove, 33, electrolytic anode plate, 34, electrolytic negative plate, 35, circulation of elecrolyte pipe.
Embodiment
Below in conjunction with the drawings and specific embodiments, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, a kind for the treatment of system of lower concentration copper-containing wastewater, comprise cupric comprehensive wastewater pond 1, contained waste liquid hold-up vessel 2, electrowinning systems 3, secondary treatment system 4, settling bath 5 and treatment center of sewage 6, described cupric comprehensive wastewater pond 1, contained waste liquid hold-up vessel 2, electrowinning systems 3, secondary treatment system 4, settling bath 5 are connected successively with treatment center of sewage 6, and be provided with water pump between each parts, and communicated by pipeline; Described electrowinning systems 3 comprises electrolyzer 31, circulation groove 32, electrolytic anode plate 33, electrolytic negative plate 34 and circulation of elecrolyte pipe 35, baffle plate is provided with between electrolyzer and circulation groove, be provided with circulation of elecrolyte pipe bottom described electrolyzer and circulation groove, described electrolytic anode plate and electrolytic negative plate are all arranged in electrolytic solution.
Described settling bath 5 is copper hydroxide settling bath, is provided with high-pressure hydraulic pump between itself and secondary treatment system.What secondary treatment system adopted is the method for acid-base neutralisation process, the reactive tank that its inside has to be filled with sodium hydroxide solution, and react after entering containing low copper waste liquid and generate copper hydroxide precipitation, copper hydroxide precipitates sends into settling bath by high-pressure hydraulic pump.
Equipment of the present invention in use, cupric comprehensive wastewater pond 1 gathering system is sent into contained waste liquid hold-up vessel 2 through high-pressure hydraulic pump and is stored after preliminary filtration, in contained waste liquid hold-up vessel 2, Low copper content wastewater enters in electrowinning systems 3 through high-pressure hydraulic pump, most copper ion reduction in Low copper content wastewater is become copper by the electrolytic reaction in electrowinning systems 3, it is 4 that Low copper content wastewater after electrolysis enters into reprocessing through high pressure conveying pump again, sodium hydroxide solution mixing in Low copper content wastewater secondary treatment system 4, after acid-base reaction, cupric ion and hydroxide radical form copper hydroxide precipitation, copper hydroxide precipitation mixing solutions enters in copper hydroxide settling bath through high pressure conveying pump, the treated copper hydroxide that can obtain precipitates, waste water after secondary treatment system 4 acid-alkali treatment enters into treatment center of sewage 6 to carry out finally processing the cleaning water that can obtain again utilizing.General Low copper content wastewater content of copper ion is at about 30g/L, and the copper ion Han Liang≤1g/L of the micro-treatment solution obtained after the electrolysis treatment in electrowinning systems 3, to eventually pass through after process is 4 acid-alkali treatment copper ion Han Liang≤50mg/L in the waste liquid of discharging, copper recovery reaches 99%, cupric ion can not only be reclaimed, also reduce difficulty and the cost of subsequent disposal, practicality improves greatly simultaneously.
The above is only embodiments of the present invention; again state, for those skilled in the art, under the premise without departing from the principles of the invention; can also carry out some improvement to the present invention, these improvement are also listed in the protection domain of the claims in the present invention.

Claims (3)

1. the treatment system of a lower concentration copper-containing wastewater, it is characterized in that: comprise cupric comprehensive wastewater pond (1), contained waste liquid hold-up vessel (2), electrowinning systems (3), secondary treatment system (4) and settling bath (5), described cupric comprehensive wastewater pond, contained waste liquid hold-up vessel, electrowinning systems, secondary treatment system is connected successively with settling bath, and be provided with water pump between each parts, described electrowinning systems (3) comprises electrolyzer (31), circulation groove (32), electrolytic anode plate (33), electrolytic negative plate (34) and circulation of elecrolyte pipe (35), baffle plate is provided with between electrolyzer and circulation groove, circulation of elecrolyte pipe is provided with bottom described electrolyzer and circulation groove, described electrolytic anode plate and electrolytic negative plate are all arranged in electrolytic solution.
2. the treatment system of a kind of lower concentration copper-containing wastewater according to claim 1, is characterized in that: described settling bath (5) is copper hydroxide settling bath, is provided with high-pressure hydraulic pump between itself and secondary treatment system.
3. the treatment system of a kind of lower concentration copper-containing wastewater according to claim 1, be is characterized in that: also comprise treatment center of sewage, is provided with high-pressure hydraulic pump, and is communicated by pipeline between described treatment center of sewage and secondary treatment system.
CN201410820408.3A 2014-12-25 2014-12-25 System for treating low-concentration copper-containing waste water Pending CN104556498A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410820408.3A CN104556498A (en) 2014-12-25 2014-12-25 System for treating low-concentration copper-containing waste water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410820408.3A CN104556498A (en) 2014-12-25 2014-12-25 System for treating low-concentration copper-containing waste water

Publications (1)

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CN104556498A true CN104556498A (en) 2015-04-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106011862A (en) * 2016-05-24 2016-10-12 深圳市危险废物处理站有限公司 Recycling system for treating used etching liquid and regeneration method
CN107858687A (en) * 2017-12-21 2018-03-30 惠州大亚湾双益达电路板科技有限公司 A kind of PCB etching liquids device for filtering impurities

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203382824U (en) * 2013-08-05 2014-01-08 湖南凯天重金属污染治理工程有限公司 Device for recovering refined copper from low-copper-content wastewater
CN103588330A (en) * 2012-08-17 2014-02-19 成都虹华环保科技有限公司 Low copper content wastewater comprehensive treatment and cyclic regeneration system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103588330A (en) * 2012-08-17 2014-02-19 成都虹华环保科技有限公司 Low copper content wastewater comprehensive treatment and cyclic regeneration system
CN203382824U (en) * 2013-08-05 2014-01-08 湖南凯天重金属污染治理工程有限公司 Device for recovering refined copper from low-copper-content wastewater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106011862A (en) * 2016-05-24 2016-10-12 深圳市危险废物处理站有限公司 Recycling system for treating used etching liquid and regeneration method
CN107858687A (en) * 2017-12-21 2018-03-30 惠州大亚湾双益达电路板科技有限公司 A kind of PCB etching liquids device for filtering impurities

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Application publication date: 20150429