CN103112970A - Heavy metal recovery and zero emission system and process - Google Patents
Heavy metal recovery and zero emission system and process Download PDFInfo
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- CN103112970A CN103112970A CN2013100712285A CN201310071228A CN103112970A CN 103112970 A CN103112970 A CN 103112970A CN 2013100712285 A CN2013100712285 A CN 2013100712285A CN 201310071228 A CN201310071228 A CN 201310071228A CN 103112970 A CN103112970 A CN 103112970A
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Abstract
The invention discloses a heavy metal recovery and zero emission system which comprises a wastewater regulation pool. The heavy metal recovery and zero emission system is characterized in that the wastewater regulation pool is sequentially connected with a first bag-type filter, an activated carbon filter, an intermediate water tank, a second bag-type filter and a reverse osmosis system through a pipeline, an osmosis liquid outlet of the reverse osmosis system is connected with a produced water tank through a pipeline, a concentrated water outlet of the reverse osmosis system is connected with a concentrated water tank through a pipeline, the concentrated water tank is connected with an ion exchange resin tank, the ion exchange resin tank is connected with a high-concentration heavy metal water tank, positive ion-exchange resin is filled in the ion exchange resin tank, and the ion exchange resin tank and the activated carbon filter are connected with the wastewater regulation pool through wastewater pipelines. The invention further discloses a heavy metal recovery and zero emission process adopting the system. By system and the process, high-added-value heavy metals in heavy metal wastewater, the water resource recycling and the zero emission can be recycled.
Description
Technical field
The present invention relates to the electroplating wastewater processing field, particularly a heavy metal species recovery and Zero discharging system and technique.
Background technology
Electroplating technology refers to pass through electrolytic action, cover the method for other metal or alloy of skim at surface of workpiece, comprise the plating pre-treatment, plate the processes such as metal level and plating aftertreatment, common are electro-coppering, nickel, chromium, zinc, copper zinc alloy, gunmetal etc.In plating production process, because the employee operates the problems such as not in place, a large amount of noble metals is along with rinse water run off, and so not only resource consumption is high, and seriously polluted, in the situation that the prevention and cure of pollution level is lower, pollution incident has generation often.Therefore need to suitably process electroplating wastewater, to reach the emission standard of national regulation.
Traditional electroplating wastewater processing is only processed according to the emission standard of national regulation, namely utilize the methods such as chemistry, electrochemistry that toxic substance is changed into nontoxic or endangers less material or be converted into water-fast compound, then utilize inclined-plate clarifying basin to carry out solid-liquid separation.Although supernatant liquor can discharge by state specified standards, wherein still have micro heavy to exist, be present in water body with the heavy metal compound state, personnel are by animalcule or plant absorbing, accumulation, and transfer to organism with the food chain mode, involve human body; And discharge water can't reuse without advanced treatment, causes the waste of water resources; Moreover the sludge quantity that produces after processing is large, is difficult for processing, and easily causes secondary pollution.
Wang Junchuan discloses a kind of electroplating wastewater and has recycled technique in application number is 200610042556.2 Chinese invention patent application " electroplating wastewater recycling Processes and apparatus ", comprise: will contain chromium, nickel electroplating wastewater through the electroplating wastewater mixing in other mixings after oxidizing reaction of reduction reaction, organic electroplating waste water, carry out successively neutralization reaction, coagulating, precipitation, obtain supernatant liquor; Gained is seen through water carry out successively first-stage reverse osmosis processing and two-pass reverse osmosis processing, what two-pass reverse osmosis was processed can be back to Workshop Production through water, the dense water of first-stage reverse osmosis and secondary wastewater treatment is neutralization reaction, coagulating, precipitation through the secondary chemical treatment, obtains the supernatant liquor qualified discharge.The electroplating wastewater recycling equipment comprises: electroplating effluent recycling and using system, reverse osmosis recovery system, reverse osmosis thick water treatment system and sludge treating system.This technique combines traditional chemical method water treatment and reverse osmosis membrane water treatment and is applied to the recycling of electroplating wastewater, can reclaim 85% filtrate that can reuse from electroplating wastewater.Above-mentioned technique can be from electroplating wastewater the recycle-water resource, but have the heavy metal of higher-value such as nickel etc. and but be transformed into sludge treatment by redox, coagulation, precipitation, so just caused a large amount of wastings of resources, increased the production cost of enterprise, the heavy metal in mud still exists the potential safety hazard of contaminate environment simultaneously.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of can efficient recovery heavy metal out of electroplating wastewater and water resources, reduce production costs, heavy metal recovery and Zero discharging system and the technique of conservation of nature environment.
for achieving the above object, technical scheme proposed by the invention is: a heavy metal species reclaims and Zero discharging system, comprise wastewater equalization pond, it is characterized in that: described wastewater equalization pond by pipeline successively with the first deep bed filter, activated charcoal filter, intermediate water tank, the second deep bed filter, reverse osmosis system is connected, described reverse osmosis system sees through the liquid outlet and is connected with the product water tank by pipeline, the dense water out of described reverse osmosis system is connected with dense water tank by pipeline, described dense water tank is connected with an ion exchange resin tank, described ion exchange resin tank is connected with a high density heavy metal water tank, filling male ion-exchange resin in described ion exchange resin tank, described ion exchange resin tank, activated charcoal filter is connected with wastewater equalization pond by waste pipe.
Further, between described the second deep bed filter and reverse osmosis system, pipeline is provided with chemicals dosing plant.
Further, described product water tank is connected with activated charcoal filter by a backwash pipeline.
Further, described the first deep bed filter is preferably the deep bed filter that pore size filter is 10 μ m, and described the second deep bed filter is preferably the deep bed filter that pore size filter is 5 μ m.
The present invention comprises that also a kind of heavy metal of above-mentioned heavy metal recovery and Zero discharging system that adopts reclaims and technique of zero discharge, it is characterized in that: comprise the steps, be collected in the heavy metal wastewater thereby of wastewater equalization pond, after filtering through the first deep bed filter, activated charcoal filter and the second deep bed filter successively, enter in reverse osmosis system, the water that sees through of reverse osmosis system is collected in the product water tank, is back to production; After the dense water of described reverse osmosis system carries out ion-exchange through the ion exchange resin tank, produce water and enter the wastewater equalization pond circular treatment by waste pipe, the regenerated liquid of described ion exchange resin tank is collected in high density heavy metal water tank, contains the heavy metal reuse of high density in described regenerated liquid or further processes rear reuse.
Further, comprise that also one carries out the step of backwash by the product water that produces in water tank to activated charcoal filter, the backwash water after described backwash is back to wastewater equalization pond by waste pipe.
Further, also comprise by chemicals dosing plant and add chemical, the step that reverse osmosis system is cleaned.
Further, described heavy metal wastewater thereby is nickeliferous heavy metal wastewater thereby.
Adopt technique scheme, heavy metal recovery of the present invention and Zero discharging system and the technique method by adopting reverse-osmosis treated and ion-exchange to combine, realized that in the heavy metal wastewater thereby, the heavy metal of high added value reclaims and the water resources reuse, have production cost low, free from environmental pollution, really realized zero release and reclaimed the advantages such as heavy metal of high added value.
Description of drawings
Fig. 1 is that heavy metal of the present invention reclaims and the Zero discharging system structural representation.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
as shown in Figure 1, one heavy metal species reclaims and Zero discharging system, comprise the wastewater equalization pond 1 that is connected successively by pipeline, the first deep bed filter 2, activated charcoal filter 3, intermediate water tank 4, the second deep bed filter 5, reverse osmosis system 6 is connected, reverse osmosis system 6 sees through the liquid outlet and is connected with product water tank 7 by pipeline, dense water out is connected with dense water tank 10 by pipeline, described dense water tank 10 is connected with an ion exchange resin tank 11, described ion exchange resin tank 11 is connected with a high density heavy metal water tank 12, be filled with Zeo-karb in ion exchange resin tank 11, ion exchange resin tank 11 is by the first waste pipe 13, activated charcoal filter 3 is connected with wastewater equalization pond 1 by the second waste pipe 14, 6 pipelines of the second deep bed filter 5 and reverse osmosis system are provided with chemicals dosing plant 8, producing water tank 7 is connected with activated charcoal filter 3 by a backwash pipeline 9.
Further, the first deep bed filter 2 is preferably the deep bed filter that pore size filter is 10 μ m, and described the second deep bed filter 5 is preferably the deep bed filter that pore size filter is 5 μ m.
Adopt the heavy metal of above-mentioned heavy metal recovery and Zero discharging system to reclaim and technique of zero discharge, comprise the steps: to be collected in the heavy metal wastewater thereby of wastewater equalization pond, after filtering through the first deep bed filter, activated charcoal filter and the second deep bed filter successively, enter in reverse osmosis system, the water that sees through of reverse osmosis system is collected in the product water tank, is back to production; After the dense water of described reverse osmosis system carries out ion-exchange through the ion exchange resin tank, produce water and enter the wastewater equalization pond circular treatment by waste pipe, the regenerated liquid of described ion exchange resin tank is collected in high density heavy metal water tank, and the heavy metal that contains high density in described regenerated liquid can direct reuse or the further rear reuse of processing.
Further, comprise that also one carries out the step of backwash by the product water that produces in water tank to activated charcoal filter, the backwash water after described backwash is back to wastewater equalization pond by waste pipe.
Further, also comprise by chemicals dosing plant and add chemical, the step that reverse osmosis system is cleaned.
Further, described heavy metal wastewater thereby is nickeliferous heavy metal wastewater thereby.
Embodiment
the present embodiment is take nickeliferous heavy metal wastewater thereby as example, adopt system of the present invention and technique to process, by the present embodiment as can be known, adopt system of the present invention and technique to carry out nickeliferous heavy metal containing wastewater treatment, can make effluent quality well satisfy the requirement of reuse, reach the purpose of heavy metal wastewater thereby zero release and reuse, simultaneously, be collected in the nickel ion that regenerated liquid in high density heavy metal water tank contains high density, can directly or after further processing to be back to electroplating work procedure, realized the reuse of high added value heavy metal, reduced enterprise's production cost, reduced environmental pollution.Water quality situation after wherein the water quality situation in the present embodiment wastewater equalization pond and employing system of the present invention and technique are processed is as shown in the table:
Although specifically show and introduced the present invention in conjunction with preferred embodiment; but the those skilled in the art should be understood that; within not breaking away from the spirit and scope of the present invention that appended claims limits; in the form and details the present invention is made a variety of changes, be protection scope of the present invention.
Claims (9)
1. a heavy metal species reclaims and Zero discharging system, comprise wastewater equalization pond, it is characterized in that: described wastewater equalization pond by pipeline successively with the first deep bed filter, activated charcoal filter, intermediate water tank, the second deep bed filter, reverse osmosis system is connected, described reverse osmosis system sees through the liquid outlet and is connected with the product water tank by pipeline, the dense water out of described reverse osmosis system is connected with dense water tank by pipeline, described dense water tank is connected with an ion exchange resin tank, described ion exchange resin tank is connected with a high density heavy metal water tank, filling male ion-exchange resin in described ion exchange resin tank, described ion exchange resin tank, activated charcoal filter is connected with wastewater equalization pond by waste pipe.
2. a heavy metal species according to claim 1 reclaims and Zero discharging system, and it is characterized in that: between described the second deep bed filter and reverse osmosis system, pipeline is provided with chemicals dosing plant.
3. a heavy metal species according to claim 1 reclaims and Zero discharging system, and described product water tank is connected with activated charcoal filter by a backwash pipeline.
4. a heavy metal species according to claim 1 reclaims and Zero discharging system, and it is characterized in that: described the first deep bed filter is that pore size filter is the deep bed filter of 10 μ m.
5. a heavy metal species according to claim 1 reclaims and Zero discharging system, and it is characterized in that: described the second deep bed filter is that pore size filter is the deep bed filter of 5 μ m.
6. a heavy metal species reclaims and technique of zero discharge, it is characterized in that: adopt the described heavy metal of the arbitrary claim of claim 1-5 to reclaim and Zero discharging system, further comprising the steps of: as to be collected in the heavy metal wastewater thereby of wastewater equalization pond successively through after the first deep bed filter, activated charcoal filter and the filtration of the second deep bed filter, enter in reverse osmosis system, the water that sees through of reverse osmosis system is collected in the product water tank, is back to production; After the dense water of reverse osmosis system carries out ion-exchange through the ion exchange resin tank, produce water and enter the wastewater equalization pond circular treatment by waste pipe, the regenerated liquid of described ion exchange resin tank is collected in high density heavy metal water tank, contains the heavy metal direct reuse of high density in described regenerated liquid or further processes rear reuse.
7. a heavy metal species according to claim 6 reclaims and technique of zero discharge, it is characterized in that: comprise that also one carries out the step of backwash by the product water that produces in water tank to activated charcoal filter, the backwash water after described backwash is back to wastewater equalization pond by waste pipe.
8. a heavy metal species according to claim 6 reclaims and technique of zero discharge, it is characterized in that: also comprise by chemicals dosing plant and add chemical, the step that reverse osmosis system is cleaned.
9. a heavy metal species according to claim 6 reclaims and technique of zero discharge, and it is characterized in that: described heavy metal wastewater thereby is nickeliferous heavy metal wastewater thereby.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355428A (en) * | 2014-11-03 | 2015-02-18 | 江苏帕洛阿尔托环保技术研究院有限公司 | Activated healthy water secondary supply system |
| CN105254068A (en) * | 2015-10-30 | 2016-01-20 | 无锡市嘉邦电力管道厂 | Chromium tanning wastewater treatment and chromium recovery system and treatment process |
| CN106167342A (en) * | 2016-09-29 | 2016-11-30 | 环境保护部南京环境科学研究所 | A kind of biological medicine waste water nitrogen phosphorus processing means and processing method thereof |
| CN110372125A (en) * | 2019-07-24 | 2019-10-25 | 无锡市道格环保科技有限公司 | Difficult removal metal ion Integrated Processing Unit in a kind of waste water |
| CN111533315A (en) * | 2020-05-13 | 2020-08-14 | 昆山水立净环保节能科技有限公司 | Zero-discharge recycling treatment process for wastewater and waste liquid on surface chemical treatment process line |
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| CN201169650Y (en) * | 2008-01-25 | 2008-12-24 | 王俊川 | Electric plating rinsing waste water slot recovery integrated decrement discharging equipment |
| CN101392402A (en) * | 2008-10-16 | 2009-03-25 | 海宁市海整整流器有限公司 | Electroplating washing water zero discharge method |
| CN202499779U (en) * | 2012-01-10 | 2012-10-24 | 中泽技鑫环保科技(上海)有限公司 | Nickel-containing washing water treatment equipment |
| CN203229428U (en) * | 2013-03-06 | 2013-10-09 | 广东森海环保装备工程有限公司 | Heavy metal recovery and zero discharge system |
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2013
- 2013-03-06 CN CN2013100712285A patent/CN103112970A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201169650Y (en) * | 2008-01-25 | 2008-12-24 | 王俊川 | Electric plating rinsing waste water slot recovery integrated decrement discharging equipment |
| CN101392402A (en) * | 2008-10-16 | 2009-03-25 | 海宁市海整整流器有限公司 | Electroplating washing water zero discharge method |
| CN202499779U (en) * | 2012-01-10 | 2012-10-24 | 中泽技鑫环保科技(上海)有限公司 | Nickel-containing washing water treatment equipment |
| CN203229428U (en) * | 2013-03-06 | 2013-10-09 | 广东森海环保装备工程有限公司 | Heavy metal recovery and zero discharge system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355428A (en) * | 2014-11-03 | 2015-02-18 | 江苏帕洛阿尔托环保技术研究院有限公司 | Activated healthy water secondary supply system |
| CN105254068A (en) * | 2015-10-30 | 2016-01-20 | 无锡市嘉邦电力管道厂 | Chromium tanning wastewater treatment and chromium recovery system and treatment process |
| CN106167342A (en) * | 2016-09-29 | 2016-11-30 | 环境保护部南京环境科学研究所 | A kind of biological medicine waste water nitrogen phosphorus processing means and processing method thereof |
| CN110372125A (en) * | 2019-07-24 | 2019-10-25 | 无锡市道格环保科技有限公司 | Difficult removal metal ion Integrated Processing Unit in a kind of waste water |
| CN111533315A (en) * | 2020-05-13 | 2020-08-14 | 昆山水立净环保节能科技有限公司 | Zero-discharge recycling treatment process for wastewater and waste liquid on surface chemical treatment process line |
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Application publication date: 20130522 |