CN102515436A - Technology for processing wastewaters in PCB (printed circuit board) industrial park - Google Patents
Technology for processing wastewaters in PCB (printed circuit board) industrial park Download PDFInfo
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- CN102515436A CN102515436A CN2011104308569A CN201110430856A CN102515436A CN 102515436 A CN102515436 A CN 102515436A CN 2011104308569 A CN2011104308569 A CN 2011104308569A CN 201110430856 A CN201110430856 A CN 201110430856A CN 102515436 A CN102515436 A CN 102515436A
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Abstract
The invention discloses a technology for processing wastewaters in a PCB industrial park. The technology comprises the following steps: 1, dividing the wastewaters into a comprehensive wastewater, a complex wastewater, a wastewater containing nickel and cyanogen, an acid waste, an organic waste, an organic wastewater, domestic sewage, and an accident wastewater according to water qualities of various wastewaters, respectively collecting them, and allowing them to enter different wastewater collection pools; 2, respectively carrying out heavy metal removal processing through a corresponding method according to water quality characteristics of the wastewater in each wastewater collection pool, wherein there is no need to carry out the heavy metal removal processing on the domestic sewage; and 3, processing all the wastewaters according to a biochemical processing process. According to the invention, the wastewaters in the whole PCB industrial park are detailedly classified, different present wastewater processing processes are adopted to carry out the heavy metal removal processing according to the different water quality characteristics of the wastewaters, and then the biochemical processing is adopted to further remove heavy metals from the wastewaters, so the COD (chemical oxygen demand) in each obtained discharged water is less than 40mg/L.
Description
Technical field
The present invention relates to a kind of field of waste water treatment, refer in particular to a kind of PCB industrial park waste water treatment process.
Background technology
The PCB industry always is the industry of a heavily contaminated because its pollutent is heavy metal, so its pollutant control particularly waste water treatment always receive much concern.
Because it is wide that PCB factory disperses, though wastewater flow rate is less relatively, the contamination area is relatively large, and the pollution that is caused is wayward.The wastewater toxicity that they are discharged is big, even carcinogenic, teratogenesis, mutagenic highly toxic substance are arranged.
The PCB industry has caused serious pollution to environment, and the pollution intensity of the PCB waste water of speaking of except the front is big, and the difficulty of improvement is big, and outside the cost height of improvement, more deeper reasons is:
(1) the general scale of the most of enterprises of PCB industry is less, and water displacement is also less, the input cost rationally of being unwilling in Pollution abatement, thereby the pollution treatment facility of many PCB enterprise is simple and crude, the pollution treatment weak effect;
(2) illegal cost is less than the cost of abiding by the law, and causes the enterprise of considerable part to have the serious PCB waste water of omitting in printing, arrange steathily.
For the problems referred to above, the existing Wastewater Concentrated that adopt are set up the PCB industry park more, and implementation is produced dirty and pollution treatment separates, and focuses on after the wastewater collection with whole PCB industrial park.Practice through for many years shows, the pollution of administering the PCB industry has been produced good effect, is in particular in following 4 points:
1, the supervision difficulty and the cost of environmental administration reduce greatly, and carry out easily;
That 2, has fundamentally stopped to produce dirty enterprise omits, arranges steathily phenomenon in printing;
3, removed in the garden enterprise to the trouble and worry of production pollutant emission;
4, reduced the pollution treatment of producing dirty enterprise cost up to standard.
Though set up the industry park a lot of advantages being arranged, also exist many problems, at first is the industrial park owing to concentrated many PCB enterprise; Because the variation of PCB production technique causes most now industry parks classification of waste only to be divided three classes or four types, the moisture class is unclear; Many waste water mixings that can not mixing are handled; Cause cost for wastewater treatment to increase, difficulty increases, and treatment effect is not good.
Summary of the invention
The purpose of this invention is to provide a kind of PCB industrial park waste water treatment process, it can overcome the deficiency of prior art, improves the effluent quality of electroplating wastewater water treatment.
The present invention is achieved in that
A kind of PCB industrial park waste water treatment process, it comprises the steps:
Step 1: according to the water quality of various waste water waste water is divided into comprehensive wastewater, complexing waste water, nickeliferous cyanogen waste water, acid waste liquid, organic liquid waste, organic waste water, sewage and accident waste water and collects respectively, get into different wastewater collection ponds;
Step 2: remove heavy metal according to corresponding method respectively according to the water quality characteristics of the waste water in each wastewater collection pond and handle, wherein, sewage need not removed heavy metal and handle;
Step 3: all waste water are handled according to biochemical processing process.
Waste water with whole PCB industrial park carries out more detailed classification earlier; According to all kinds of waste water according to different water quality characteristicses; Adopting different existing waste water treatment process to remove heavy metal handles; Adopt biochemical treatment afterwards again, further remove the heavy metal of waste water, make water outlet COD＜40mg/L.
Preferably; Said PCB industrial park waste water treatment process also includes online monitoring system, the parameter when getting into corresponding wastewater collection pond through said online monitoring system detection monitoring comprehensive wastewater, complexing waste water, nickeliferous cyanogen waste water, acid waste liquid, organic liquid waste, organic waste water and sewage; When comprehensive wastewater, complexing waste water, nickeliferous cyanogen waste water, acid waste liquid, organic liquid waste, organic waste water or sewage do not meet its relevant parameters, with the discharge of wastewater of correspondence to accident pool.
Preferably, in the biochemical processing process of said complexing waste water, said acid waste liquid, said organic waste water and said organic waste water, waste water passes through successively: anaerobic pond-Aerobic Pond-MBR pond-clean water basin-uv sterilisation-discharging.
In this preferred embodiment, said anaerobic pond adopts up-flow anaerobic sludge blanket.
Preferably, regularly add active sludge in said anaerobic pond.Because the waste water that gets in the biochemical processing process also can some heavy metal, and said anaerobic pond can produce sulphur when carrying out anaerobic reaction, sulphur and heavy metal can generate sulfide precipitation, thereby can further remove heavy metal; But; Simultaneously also can form heavy metal sewage sludge; Be to have heavy metal in the active sludge, thereby reduced the activity of active sludge, need regularly efflux the property let live mud; But sludge quantity is reduced; So the active sludge that will regularly add municipal wastewater factory preferably, in the biochemical processing process of said comprehensive wastewater, said nickeliferous cyanogen waste water, said sewage and said accident waste water, waste water passes through successively: hydrolysis acidification pool-Aerobic Pond-MBR pond-clean water basin-uv sterilisation-discharging.
PCB industrial park waste water treatment process of the present invention compared with prior art has following beneficial effect:
The present invention at first through the waste water of whole PCB industrial park is carried out drainage water diffluence, the conveying of branch matter, classification processing and focused on the means that combine, not only can effectively improve effluent quality, makes the COD＜40mg/L of water outlet; And the whole process that makes wastewater treatment has realized the pattern of cleaner production; The present invention had both guaranteed through categorised collection waste water that water treatment effect was best, and processing cost is minimum, did not also cause enterprise to divide the water cost to increase, and can reduce the pollution treatment cost of enterprise to greatest extent, improved the treatment effect of electroplating wastewater.
Description of drawings
Fig. 1 is PCB industrial park waste water processing technological flow figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated:
As shown in Figure 1, PCB industrial park waste water treatment process of the present invention, it comprises the steps:
Step 1: according to the water quality of various waste water waste water is divided into comprehensive wastewater, complexing waste water, nickeliferous cyanogen waste water, acid waste liquid, organic liquid waste, organic waste water, sewage and accident waste water and collects respectively, get into different wastewater collection ponds;
Step 2: remove heavy metal according to corresponding method respectively according to the water quality characteristics of the waste water in each wastewater collection pond and handle, wherein, sewage need not removed heavy metal and handle;
Step 3: all waste water are handled according to biochemical processing process.
Can not enter accurately in the corresponding wastewater collection pond for fear of waste water; Said PCB industrial park waste water treatment process also includes online monitoring system, the parameter when getting into corresponding wastewater collection pond through said online monitoring system detection monitoring comprehensive wastewater, complexing waste water, nickeliferous cyanogen waste water, acid waste liquid, organic liquid waste, organic waste water and sewage; When comprehensive wastewater, complexing waste water, nickeliferous cyanogen waste water, acid waste liquid, organic liquid waste, organic waste water or sewage do not meet its relevant parameters, with the discharge of wastewater of correspondence to accident pool.
As shown in the table, it has represented the main source and the water quality characteristics of various waste water:
Can find out that from last table the source of waste water is different, its water quality characteristics is different, and the present invention selects the technology of different removal heavy metals to handle according to the water quality characteristics of different waste water, wherein:
The processing technological flow of preferred comprehensive wastewater is following:
Comprehensive wastewater pond 10-PH equalizing tank one 11-PH equalizing tank two 12-coagulation basin 13-flocculation basin 14-settling tank 15-intermediate pool 16
Wherein,, said PH adds ferrous and alkali medicament in adjusting pond 1; And in said PH equalizing tank 2 12 and said intermediate pool 16, all add the alkali medicament; And through the PH meter all is set in said PH adjusts pond 1, said PH equalizing tank 2 12 and said intermediate pool 16, and this PH meter is connected with the PLC system, monitors the pH value of said PH adjustment pond 1, said PH equalizing tank 2 12 and said intermediate pool 16 in real time.And, in said coagulation basin 13 and said flocculation basin 14, need add coagulating agent and flocculation agent respectively.The heavy metal that adopts this technology to remove in the comprehensive wastewater has belonged to prior art, and the present invention repeats no more at this.
The processing technological flow of preferred nickeliferous cyanogen waste water is following:
Pond 291-sand tower 292 in the middle of the nickeliferous cyanogen wastewater disposal basin 20-PH adjustment groove 21-one-level broken cyanide groove 22-PH adjustment groove 23-secondary broken cyanide groove 24-PH adjustment pond 25-oxidation contact break pond 26-PH adjustment pond 27-coagulation reaction tank 28-settling tank 29-
Wherein, In said PH adjustment groove 21, said PH adjustment groove 23, said PH adjustment pond 25 and said PH adjustment pond 27 the PH meter is set respectively; This PH meter is connected with the PLC system, monitors the pH value in said PH adjustment groove 21, said PH adjustment groove 23, said PH adjustment pond 25 and said PH adjustment pond 27 in real time; At said one-level broken cyanide groove 22 and said secondary broken cyanide groove 24 online oxidation-reduction potentiometer is set all, and this on-line oxidation reduction potential meter is connected with the PLC system.The heavy metal that adopts this technology to remove in the nickeliferous cyanogen waste water has belonged to prior art, and the present invention repeats no more at this.
The processing technological flow of preferred complexing waste water is following:
Complexing wastewater disposal basin 31-PH adjustment pond 32-replacement(metathesis)reaction pond 33-PH adjustment pond 34-coagulation basin 35-settling tank 36-intermediate pool 37
Wherein, be provided with the PH meter in said PH adjustment pond 32, said PH adjustment pond 34 and said intermediate pool 37, and this PH meter is connected with the PLC system, monitor the pH value of said PH adjustment pond 32, said PH adjustment pond 34 and said intermediate pool 37 in real time.
Preferred spent acid solution and organic waste water get into organic waste water pond 51 and together remove heavy metal removal processing with organic waste water after acid out pond 41, preferred concrete treatment process is following:
Organic waste water pond 51-reaction tank 52-neutralization tank 53-coagulation basin 54-flocculation basin 55-settling tank 56-intermediate pool 57
Wherein, in said reaction tank 52, need to add ferrous medicament; At said neutralization tank 53 and said intermediate pool 57 the PH meter is set all, and this PH meter is connected with the PLC system, monitor the pH value of said neutralization tank 53 and said intermediate pool 57 in real time.
The treatment process of preferred accident waste water is following:
Accident pool 61-PH equalizing tank one 62-PH equalizing tank two 63-coagulation basin 64-flocculation basin 65-settling tank 66-sewage equalizing tanks 67
Wherein, adjust pond 1 and said PH equalizing tank 2 63 at said PH the PH meter all is set, and this PH meter is connected with the PLC system, monitor the pH value of said PH adjustment pond 1 and said PH equalizing tank 2 63 in real time.
In order to monitor the treatment effect of above-mentioned each technology to the heavy metal of all kinds of waste water; Water outlet at the said sewage equalizing tank 67 of water outlet machine of the water outlet of the water outlet of the water outlet of said intermediate pool 16, said sand tower 292, said intermediate pool 37, said intermediate pool 57 is provided with Cu controlled on-line appearance, detects the concentration of the cupric ion of corresponding water outlet.When copper ion concentration was higher than set(ting)value, corresponding water switched to said accident pool 61, proceeds next step processing then; When copper ion concentration was lower than set(ting)value, the rising pipe of relevant device switched to subsequent processing processing or extremely total drain qualified discharge.
After all kinds of waste water being carried out heavy metal removal technology through above-mentioned each technology, through following technology all kinds of waste water are carried out biochemical treatment again:
Wherein, in the biochemical processing process of said complexing waste water, said acid waste liquid, said organic waste water and said organic waste water, waste water passes through successively: anaerobic pond 101-Aerobic Pond 103-MBR pond 104-clean water basin 105-uv sterilisation-discharging.In this preferred embodiment, said anaerobic pond adopts up-flow anaerobic sludge blanket.Preferably, regularly add active sludge in said anaerobic pond.Through in said anaerobic pond, dropping into active sludge, make reaction in heavy metal and the movable mud in the waste water and generate sulfide precipitation, further remove the heavy metals such as copper in the waste water; On the other hand, also follow-up anoxic aerobic process is formed protection.
Wherein, in the biochemical processing process of said comprehensive wastewater, said nickeliferous cyanogen waste water, said sewage and said accident waste water, waste water passes through successively: hydrolysis acidification pool 102-Aerobic Pond 103-MBR pond 104-clean water basin 105-uv sterilisation-discharging.
Water outlet after waste water is carried out biochemical treatment (promptly in the discharge of wastewater outlet) locates to be provided with online COD automonitor, monitoring water outlet COD real time data.
In addition; In order accurately to know the disposition of above-mentioned each technology; And select to add the medicament of suitable dosage, can detect analog quantitys such as online PH/ORP instrument, online COD instrument, liquid level and flow through online monitoring system, simultaneously again through the online monitoring system trip switch with the hydraulic detention time of control waste water in each flow process; Above-mentioned control method has belonged to prior art, and the present invention repeats no more at this.
More than be merely specific embodiment of the present invention, do not limit protection scope of the present invention with this; Any replacement and the improvement on the basis of not violating the present invention's design, done all belong to protection scope of the present invention.
Claims (6)
1. a PCB industrial park waste water treatment process is characterized in that it comprises the steps:
Step 1: according to the water quality of various waste water waste water is divided into comprehensive wastewater, complexing waste water, nickeliferous cyanogen waste water, acid waste liquid, organic liquid waste, organic waste water, sewage and accident waste water and collects respectively, get into different wastewater collection ponds;
Step 2: remove heavy metal according to corresponding method respectively according to the water quality characteristics of the waste water in each wastewater collection pond and handle, wherein, sewage need not removed heavy metal and handle;
Step 3: all waste water are handled according to biochemical processing process.
2. PCB industrial park waste water treatment process as claimed in claim 1; It is characterized in that; It includes online monitoring system, the parameter when getting into corresponding wastewater collection pond through said online monitoring system detection monitoring comprehensive wastewater, complexing waste water, nickeliferous cyanogen waste water, acid waste liquid, organic liquid waste, organic waste water and sewage; When comprehensive wastewater, complexing waste water, nickeliferous cyanogen waste water, acid waste liquid, organic liquid waste, organic waste water or sewage do not meet its relevant parameters, with the discharge of wastewater of correspondence to accident pool.
3. PCB industrial park waste water treatment process as claimed in claim 1; It is characterized in that; In the biochemical processing process of said complexing waste water, said acid waste liquid, said organic waste water and said organic waste water, waste water passes through successively: anaerobic pond-Aerobic Pond-MBR pond-clean water basin-uv sterilisation-discharging.
4. PCB industrial park waste water treatment process as claimed in claim 3 is characterized in that, said anaerobic pond adopts up-flow anaerobic sludge blanket.
5. PCB industrial park waste water treatment process as claimed in claim 3 is characterized in that, regularly adds active sludge in said anaerobic pond.
6. PCB industrial park waste water treatment process as claimed in claim 1; It is characterized in that; In the biochemical processing process of said comprehensive wastewater, said nickeliferous cyanogen waste water, said sewage and said accident waste water, waste water passes through successively: hydrolysis acidification pool-Aerobic Pond-MBR pond-clean water basin-uv sterilisation-discharging.
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| CN2011104308569A CN102515436A (en) | 2011-12-19 | 2011-12-19 | Technology for processing wastewaters in PCB (printed circuit board) industrial park |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863101A (en) * | 2012-10-15 | 2013-01-09 | 杨俊义 | Automatic control sewage treatment system with variable process and treating capacity |
| CN103265151A (en) * | 2013-06-09 | 2013-08-28 | 广东新大禹环境工程有限公司 | Treatment method of heavy metal wastewater |
| CN104150652A (en) * | 2014-08-18 | 2014-11-19 | 南京大学盐城环保技术与工程研究院 | Water inlet monitoring and adjusting system in centralized sewage treatment plant in chemical industry park as well as method thereof |
| CN104291509A (en) * | 2014-07-11 | 2015-01-21 | 泉州市天龙环境工程有限公司 | Classified processing apparatus and method for organic silicon wastewater |
| WO2015184666A1 (en) * | 2014-06-04 | 2015-12-10 | 深圳市华星光电技术有限公司 | Wash chamber discharging method and device |
| CN105859058A (en) * | 2016-06-17 | 2016-08-17 | 河北省环境科学研究院 | Method for recycling industrial district water resources based on water quality grading and gradient utilization |
| CN108249704A (en) * | 2018-02-01 | 2018-07-06 | 无锡深南电路有限公司 | The treatment process of brown oxide waste liquid produced by a kind of printing PCB circuit board |
| CN108691353A (en) * | 2018-06-01 | 2018-10-23 | 安徽得奇环保科技股份有限公司 | A kind of industrial park sewage collection system and method |
| CN109516613A (en) * | 2018-11-23 | 2019-03-26 | 宁波欣辉环保科技有限公司 | A kind of cyanide containing wastewater plating pretreating process |
| CN111470740A (en) * | 2020-06-23 | 2020-07-31 | 江苏省环科院环境科技有限责任公司 | Intelligent industrial park sewage management and control platform and control method thereof |
| CN111908678A (en) * | 2020-07-02 | 2020-11-10 | 逸辰环保科技(厦门)有限公司 | Process and system for guaranteeing safe discharge of electroplating wastewater |
| CN113371934A (en) * | 2021-06-08 | 2021-09-10 | 珠海市建泰环保工业园有限公司 | Sewage treatment method |
| CN115057593A (en) * | 2022-08-03 | 2022-09-16 | 广东水清环境治理有限公司 | Combined treatment method for circuit board wastewater |
| CN115353255A (en) * | 2022-08-22 | 2022-11-18 | 昆明理工大学 | Circuit board industry wastewater comprehensive treatment method |
| CN115583677A (en) * | 2022-10-31 | 2023-01-10 | 江苏创健健康科技有限公司 | Intelligent sewage grading method and device, computer equipment and storage medium |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863101A (en) * | 2012-10-15 | 2013-01-09 | 杨俊义 | Automatic control sewage treatment system with variable process and treating capacity |
| CN103265151A (en) * | 2013-06-09 | 2013-08-28 | 广东新大禹环境工程有限公司 | Treatment method of heavy metal wastewater |
| CN103265151B (en) * | 2013-06-09 | 2014-12-03 | 广东新大禹环境工程有限公司 | Treatment method of heavy metal wastewater |
| WO2015184666A1 (en) * | 2014-06-04 | 2015-12-10 | 深圳市华星光电技术有限公司 | Wash chamber discharging method and device |
| CN104291509A (en) * | 2014-07-11 | 2015-01-21 | 泉州市天龙环境工程有限公司 | Classified processing apparatus and method for organic silicon wastewater |
| CN104150652A (en) * | 2014-08-18 | 2014-11-19 | 南京大学盐城环保技术与工程研究院 | Water inlet monitoring and adjusting system in centralized sewage treatment plant in chemical industry park as well as method thereof |
| CN105859058A (en) * | 2016-06-17 | 2016-08-17 | 河北省环境科学研究院 | Method for recycling industrial district water resources based on water quality grading and gradient utilization |
| CN108249704A (en) * | 2018-02-01 | 2018-07-06 | 无锡深南电路有限公司 | The treatment process of brown oxide waste liquid produced by a kind of printing PCB circuit board |
| CN108691353A (en) * | 2018-06-01 | 2018-10-23 | 安徽得奇环保科技股份有限公司 | A kind of industrial park sewage collection system and method |
| CN109516613A (en) * | 2018-11-23 | 2019-03-26 | 宁波欣辉环保科技有限公司 | A kind of cyanide containing wastewater plating pretreating process |
| CN111470740A (en) * | 2020-06-23 | 2020-07-31 | 江苏省环科院环境科技有限责任公司 | Intelligent industrial park sewage management and control platform and control method thereof |
| CN111908678A (en) * | 2020-07-02 | 2020-11-10 | 逸辰环保科技(厦门)有限公司 | Process and system for guaranteeing safe discharge of electroplating wastewater |
| CN113371934A (en) * | 2021-06-08 | 2021-09-10 | 珠海市建泰环保工业园有限公司 | Sewage treatment method |
| CN115057593A (en) * | 2022-08-03 | 2022-09-16 | 广东水清环境治理有限公司 | Combined treatment method for circuit board wastewater |
| CN115353255A (en) * | 2022-08-22 | 2022-11-18 | 昆明理工大学 | Circuit board industry wastewater comprehensive treatment method |
| CN115353255B (en) * | 2022-08-22 | 2023-12-22 | 昆明理工大学 | Comprehensive treatment method for wastewater in circuit board industry |
| CN115583677A (en) * | 2022-10-31 | 2023-01-10 | 江苏创健健康科技有限公司 | Intelligent sewage grading method and device, computer equipment and storage medium |
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Application publication date: 20120627 |