With the continuous progress of society, we pay more and more attention to water quality! So what can we do to ensure the safety of the water? What are the countermeasures to make the COD standard of electroplating wastewater? This chapter water quality online monitoring instrument manufacturers to understand the above issues together with you.

To ensure the safety of water quality, it is actually to discharge the polluted water after monitoring and treatment. So what are the relevant countermeasures of COD standards in electroplating wastewater? Mainly divided into the following points:

1.As an electroplating enterprise, it is necessary to adopt a new process to reduce the COD index in the wastewater, and use peel type dewaxing water to drink low-temperature alkaline chemical deoiling powder, etc., and a matching oil and water separator for cleaning;

2.COD does not just mean the organic matter in the water, it also means that the water has a reducing inorganic matter;

3.In electroplating enterprises, it is common to use hydrochloric acid to contain a large amount of Cl- in pickling process, and a large amount of Fe2+ will be produced when pickling black metal, so it is necessary to eliminate other interference when detecting COD index in wastewater;

4.In addition, it is suggested that although the environmental protection department has not yet required the detection of BOD indicators, there is no issue about BOD indicators in the “Emission Standards for pollutants in the electroplating industry”. However, while examining the COD index, it is recommended to pay attention to the BOD index;

5.It is generally believed that COD can basically be used to represent all organic matter in the water, and BOD is the organic matter that can be biodegradable in the water. Therefore, the difference between COD and BOD can be expressed as the part of organic matter that can not be biodegradable by organisms in the wastewater. However, if the COD index in the wastewater is high, but the BOD index is also high, it indicates that the wastewater is mainly composed of degradable components, which can be quickly degraded naturally in nature, and there is no need to make excessive requirements for this wastewater index.

The COD online analyzer produced by Hangzhou Moody is used to monitor the content of COD in water, and there are a variety of monitoring methods, and users can understand the relevant equipment according to their own needs.