Monitoring method and device for electroplated waste water

Abstract

Intelligent data acquisition unit for environmental protection including CPU is as monitor host. Two sets of CL 133 type pH / ORP transducers and adaptive pH and ORP electrodes, and one set of PRO type conductivity transducer and adaptive conductivity electrode are connected to I / O ports for analog signals in the monitor host in order to carry out at least one treatment: (1) monitoring waste water treatment plant through current sensor; (2) monitoring pH and concentration of copper, zinc, and nickel ions through pH electrode; (3) monitoring ORP and concentration of sexivalent chromium ion; (4) monitoring action of discharging waste water under the table. Features are: all-sided monitoring, simple operation.

Description

technical field [0001] The invention relates to a method and a device for remotely monitoring the discharge of electroplating wastewater in the electroplating industry, belonging to the field of environmental protection monitoring. Background technique [0002] The electroplating process is widely used in industry. With the rapid development of my country's industrial economy, the domestic electroplating industry is also developing rapidly. The distribution of electroplating enterprises is wide, and most of them are multi-point and wide-ranging. The environmental pollution hazards caused by the discharge of electroplating wastewater are quite serious. As we all know, electroplating wastewater mainly comes from degreasing, pickling and post-plating dipping in the electroplating process. The acidity and alkalinity of electroplating wastewater varies greatly, and the content of various heavy metals is very high High, the toxicity of discharge to the environment is very high. Ac...

AI Technical Summary

Problems solved by technology

The environmental pollution hazards caused by the discharge of electroplating wastewater are quite serious. As we all know, electroplating wastewater mainly comes from degreasing, pickling and post-plating dipping in the electroplating process. The acidity and alkalinity of electroplating wastewater varies greatly, and the content of various heavy metals is very high High, the toxicity of discharge to the environment is very high. According to relevant information, copper is highly toxic to aquatic organisms. When copper in water reaches 0.01mg / l, it has a significant inhibitory effect on the self-purification of water; the concentration of zinc in alkaline water exceeds 5mg / l l, the water has a bitter taste; according to some reports, nickel is carcinogenic and has obvious toxic effects on aquatic organisms; the toxicity of chromium is related to its valence state, and it is generally believed that the toxicity of hexavalent chromium is 100% higher than that of trivalent chromium times, hexavalent chromium is more easily absorbed by the human body and accumulates in the body, causing harm to the human body

Although some electroplating enterprises have installed automatic wastewater treatment devices and passed the acceptance of "one control and two standards", under the conditions of market economy, some enterprises still do everything possible to pursue the maximization of profits. Without effective environmental protection supervision measures , by chance, leaked electroplating wastewater that exceeded the standard, causing environmental pollution

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