CN110776023A - Electroplating wastewater classified collection mixed discharge monitoring system and treatment method thereof - Google Patents
Electroplating wastewater classified collection mixed discharge monitoring system and treatment method thereof Download PDFInfo
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- CN110776023A CN110776023A CN201910938997.8A CN201910938997A CN110776023A CN 110776023 A CN110776023 A CN 110776023A CN 201910938997 A CN201910938997 A CN 201910938997A CN 110776023 A CN110776023 A CN 110776023A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/001—Upstream control, i.e. monitoring for predictive control
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Abstract
The invention discloses a system for classifying, collecting and mixed discharging monitoring of electroplating wastewater and a treatment method of the system. Wherein; the production workshop is respectively connected with a plurality of waste water branch flow distribution pipelines, a resistivity measuring instrument is respectively installed on a plurality of water branch flow distribution pipelines, a plurality of waste water collecting tanks are respectively connected with a plurality of water branch flow distribution pipelines, and a plurality of waste water collecting tanks are respectively connected with corresponding treatment systems. The invention adopts flow division, carries out resistivity measurement, wastewater collection and wastewater treatment, and has the characteristics of simple operation, easy installation, and capability of ensuring the reaction speed of conductivity measurement, the running stability and the measurement continuity.
Description
Technical Field
The invention belongs to the technical field of monitoring, and particularly relates to a system for classifying, collecting and mixed discharging of electroplating wastewater, and a treatment method of the system.
Background
In the running process of an electroplating factory in the electroplating industry, electroplating solution filtration, plated part cleaning, factory cleaning and the like enable electroplating wastewater containing heavy metal ions to enter a drainage pipeline. The waste water comes from various bath solutions and water which are leaked, emitted, dripped and leaked due to the leakage of plating pretreatment, plating layer rinsing, post-treatment, workshop scouring and plating bath leakage or improper operation management, and the main heavy metals contained in the waste water comprise chromium, cadmium, lead, copper, nickel and zinc. If discharged into the environment, heavy metal ions can cause wider and more serious harm to human beings through the enrichment effect of drinking water and food chains.
The type of electroplating is classified into chromium-containing wastewater, nickel-containing wastewater, copper-containing wastewater, zinc-containing wastewater, cadmium-containing wastewater, and the like. The heavy metals contained in the wastewater from electroplating plants are mainly chromium, depending on the processed articles and the quantity. As the electroplating wastewater relates to a plurality of plating species and has very complex components, the heavy metal wastewater is the wastewater category with extremely great potential hazard in the electroplating industry except the cyanide (CN-) containing wastewater and the acid-base wastewater. Heavy metal elements contained in heavy metal wastewater are classified, and generally classified into wastewater containing chromium (Cr), wastewater containing nickel (Ni), wastewater containing cadmium (Cd), wastewater containing copper (Cu), wastewater containing zinc (Zn), wastewater containing gold (Au), wastewater containing silver (Ag), and the like.
The main source of zinc in electroplating and metal processing industry wastewater is electroplating or pickling dragline liquor. The contaminants are transferred back to the rinse water through the metal rinse process. The pickling process includes immersing the metal (zinc or copper) in a strong acid to remove surface oxides, and then in a brightener containing strong chromic acid to perform a brightening treatment. The waste water contains a large amount of hydrochloric acid, heavy metal ions such as zinc, copper and the like, organic brightening agent and the like, and has high toxicity.
The common electroplating enterprises have the following electroplating wastewater treatment process: the defects of the process treatment of a production workshop, a branch flow, each wastewater collecting tank and each wastewater corresponding reaction system are as follows: the water mixed with other metals enters the metal reaction system due to uncontrollable property at the front end of a production workshop and lack of monitoring means, and subsequent discharge exceeds standard due to different treatment processes of each metal treatment system, which cannot effectively treat non-system treatment metals, and the mixed discharge phenomenon of various waste water is easy to occur.
Disclosure of Invention
The invention aims to overcome the defects, provides a system for classifying, collecting and mixed discharging monitoring of electroplating wastewater, and also relates to a system treatment method, wherein a conductivity measuring instrument is additionally arranged at each classified pipeline inlet of a sewage treatment station, samples in the pipelines are sampled and detected in advance, conductivity measurement comparison data are obtained through analysis, an original standard value is formed, the online monitoring of the industrial electroplating wastewater flowing through the pipelines is realized, the system is simple to operate and easy to install, the reaction speed of conductivity measurement, the operation stability and the measurement continuity are ensured, and the system is used for the classified collection and mixed discharging monitoring system of the electroplating wastewater.
The purpose of the invention and the main technical problem of solving the invention are realized by adopting the following technical scheme:
a sort collection and mixed discharge monitoring system for electroplating wastewater is characterized in that; the production workshop is respectively connected with a plurality of waste water branch flow distribution pipelines, a resistivity measuring instrument is respectively installed on a plurality of water branch flow distribution pipelines, a plurality of waste water collecting tanks are respectively connected with a plurality of water branch flow distribution pipelines, and a plurality of waste water collecting tanks are respectively connected with corresponding treatment systems.
A treatment method of a classification, collection and mixed discharge monitoring system for electroplating wastewater comprises the following steps;
1) shunting; the production workshops are respectively connected with a waste water branch flow-dividing pipeline;
2) measuring the resistivity; each waste water pipeline is provided with a resistivity measuring instrument to monitor the resistivity of each waste water in real time, samples in the pipelines are sampled and detected, conductivity measurement comparison data are obtained through analysis, an original standard value is formed, if deviation from designed resistivity occurs, the waste water with deviation can be judged to be mixed and arranged and contain other metals, data of each metal resistivity measuring instrument is connected with a central control display, and if deviation occurs, a central control alarm is given;
3) collecting waste water; installing different wastewater collecting tanks at the lower end of each wastewater tank to collect wastewater;
4) treating wastewater; the collecting tanks are respectively connected with corresponding treatment systems for wastewater treatment.
Wherein the data of each metal resistivity detector in the step 2) is as follows; the measuring range of the chromium-containing wastewater is 12.4-13.3 omega.m, the measuring range of the cadmium-containing wastewater is 6.78-6.88 omega.m, and the measuring range of the nickel-containing wastewater is 6.78-6.88 omega.m.
Compared with the prior art, the invention has obvious beneficial effects, and the technical scheme can show that: according to the invention, by installing the resistivity measuring instrument on each wastewater discharge path according to the different resistivity of various metals, if the resistivity of each wastewater deviates from the designed resistivity, the wastewater with the deviation can be judged to be mixed (contain other metals) if the resistivity of each wastewater deviates. And the data of each metal resistivity detector is connected with a central control display, and if deviation occurs, the central control gives an alarm. The measuring range of the chromium-containing wastewater is 12.4-13.3 omega.m, the measuring range of the cadmium-containing wastewater is 6.78-6.88 omega.m, and the measuring range of the nickel-containing wastewater is 6.78-6.88 omega.m. Through long-term comparison analysis, the resistivity coefficients of common metals are shown in the following table:
the occurrence of the mixed discharging phenomenon can be effectively found from the table above, the mixed discharging phenomenon is found at the first time, and emergency treatment is carried out, so that a guarantee effect is played, and the normal operation and the final standard-reaching discharging effect of a subsequent treatment system are guaranteed, in short; the invention has simple operation and easy installation, and ensures the reaction speed, the running stability and the measurement continuity of the conductivity measurement.
Drawings
FIG. 1 is an outflow diagram of the present invention.
Detailed Description
Example one
A treatment method of a classification, collection and mixed discharge monitoring system for electroplating wastewater comprises the following steps;
1) shunting; the production workshops are respectively connected with a waste water branch flow-dividing pipeline;
2) measuring the resistivity; and each waste water pipeline is provided with a resistivity measuring instrument to monitor the resistivity of each waste water in real time, samples in the pipelines are sampled and detected, and conductivity measurement comparison data are obtained through analysis, wherein the measuring range of the chromium-containing waste water is 12.4 omega.m, the measuring range of the cadmium-containing waste water is 6.78 omega.m, and the measuring range of the nickel-containing waste water is 6.78 omega.m.
Forming an original standard value, if deviation with designed resistivity occurs, judging that the wastewater with the deviation occurs mixed drainage and contains other metals, connecting data of each metal resistivity detector with a central control display, and if deviation occurs, giving a central control alarm;
3) collecting waste water; installing different wastewater collecting tanks at the lower end of each wastewater tank to collect wastewater;
4) treating wastewater; the collecting tanks are respectively connected with corresponding treatment systems for wastewater treatment.
Example two
A treatment method of a classification, collection and mixed discharge monitoring system for electroplating wastewater comprises the following steps;
1) shunting; the production workshops are respectively connected with a waste water branch flow-dividing pipeline;
2) measuring the resistivity; and each waste water pipeline is provided with a resistivity measuring instrument to monitor the resistivity of each waste water in real time, samples in the pipelines are sampled and detected, and conductivity measurement comparison data are obtained through analysis, wherein the measuring range of the chromium-containing waste water is 12.9 omega m, the measuring range of the cadmium-containing waste water is 6.80 omega m, and the measuring range of the nickel-containing waste water is 6.80 omega m.
Forming an original standard value, if deviation with designed resistivity occurs, judging that the wastewater with the deviation occurs mixed drainage and contains other metals, connecting data of each metal resistivity detector with a central control display, and if deviation occurs, giving a central control alarm;
3) collecting waste water; installing different wastewater collecting tanks at the lower end of each wastewater tank to collect wastewater;
4) treating wastewater; the collecting tanks are respectively connected with corresponding treatment systems for wastewater treatment.
EXAMPLE III
A treatment method of a classification, collection and mixed discharge monitoring system for electroplating wastewater comprises the following steps;
1) shunting; the production workshops are respectively connected with a waste water branch flow-dividing pipeline;
2) measuring the resistivity; and each waste water pipeline is provided with a resistivity measuring instrument to monitor the resistivity of each waste water in real time, samples in the pipelines are sampled and detected, and conductivity measurement comparison data are obtained through analysis, wherein the measuring range of the chromium-containing waste water is 13.3 omega.m, the measuring range of the cadmium-containing waste water is 6.88 omega.m, and the measuring range of the nickel-containing waste water is 6.88 omega.m.
Forming an original standard value, if deviation with designed resistivity occurs, judging that the wastewater with the deviation occurs mixed drainage and contains other metals, connecting data of each metal resistivity detector with a central control display, and if deviation occurs, giving a central control alarm;
3) collecting waste water; installing different wastewater collecting tanks at the lower end of each wastewater tank to collect wastewater;
4) treating wastewater; the collecting tanks are respectively connected with corresponding treatment systems for wastewater treatment.
Claims (3)
1. A sort collection and mixed discharge monitoring system for electroplating wastewater is characterized in that; the production workshop is respectively connected with a plurality of waste water branch flow distribution pipelines, a resistivity measuring instrument is respectively installed on a plurality of water branch flow distribution pipelines, a plurality of waste water collecting tanks are respectively connected with a plurality of water branch flow distribution pipelines, and a plurality of waste water collecting tanks are respectively connected with corresponding treatment systems.
2. A treatment method of a classification, collection and mixed discharge monitoring system for electroplating wastewater comprises the following steps;
1) shunting; the production workshops are respectively connected with a waste water branch flow-dividing pipeline;
2) measuring the resistivity; each waste water pipeline is provided with a resistivity measuring instrument to monitor the resistivity of each waste water in real time, samples in the pipelines are sampled and detected, conductivity measurement comparison data are obtained through analysis, an original standard value is formed, if deviation from designed resistivity occurs, the waste water with deviation can be judged to be mixed and arranged and contain other metals, data of each metal resistivity measuring instrument is connected with a central control display, and if deviation occurs, a central control alarm is given;
3) collecting waste water; installing different wastewater collecting tanks at the lower end of each wastewater tank to collect wastewater;
4) treating wastewater; the collecting tanks are respectively connected with corresponding treatment systems for wastewater treatment.
3. The method for processing a classification collection and mixed drainage monitoring system for electroplating wastewater according to claim 2, wherein the data of each metal resistivity detector in step 2) is; the measuring range of the chromium-containing wastewater is 12.4-13.3 omega.m, the measuring range of the cadmium-containing wastewater is 6.78-6.88 omega.m, and the measuring range of the nickel-containing wastewater is 6.78-6.88 omega.m.
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Citations (5)
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| CN101424932A (en) * | 2008-12-09 | 2009-05-06 | 广东新大禹环境工程有限公司 | Waste water separate collection monitoring method and system in electroplating industrial park |
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| CN205603369U (en) * | 2016-05-06 | 2016-09-28 | 西安靖安特环境科技有限公司 | Electroplating wastewater treatment system device |
| CN206799188U (en) * | 2017-05-26 | 2017-12-26 | 苏州科太环境技术有限公司 | A kind of waste water dual treatment system |
| CN209400519U (en) * | 2018-12-21 | 2019-09-17 | 东莞市合丰环保投资有限公司 | A kind of online water quality monitoring system in industrial park |
-
2019
- 2019-09-30 CN CN201910938997.8A patent/CN110776023A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424932A (en) * | 2008-12-09 | 2009-05-06 | 广东新大禹环境工程有限公司 | Waste water separate collection monitoring method and system in electroplating industrial park |
| CN102749430A (en) * | 2012-07-24 | 2012-10-24 | 力合科技（湖南）股份有限公司 | Waste water monitoring device, system and method |
| CN205603369U (en) * | 2016-05-06 | 2016-09-28 | 西安靖安特环境科技有限公司 | Electroplating wastewater treatment system device |
| CN206799188U (en) * | 2017-05-26 | 2017-12-26 | 苏州科太环境技术有限公司 | A kind of waste water dual treatment system |
| CN209400519U (en) * | 2018-12-21 | 2019-09-17 | 东莞市合丰环保投资有限公司 | A kind of online water quality monitoring system in industrial park |
Non-Patent Citations (1)
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| 资双飞 等: "第五十讲 基于WIA-PA工业无线网络的电镀废水浓度监测系统", 《仪器仪表标准化与计量》 * |
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Application publication date: 20200211 |