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Discharging of rinse water from water-based cleaning agents

Unibright 👁 1774 Tags:漂洗水排放问题

The waste liquid composition of cleaning agents and rinsing water is usually composed of the following components


1. Pollutant has been cleaned


2. Surfactants


3. Environmentally friendly solvents


4. Water


Its characteristics are complex composition, high pollutant concentration, high COD and BOD content, and high difficulty in treatment. According to the corresponding discharge standards set by the Ministry of Environmental Protection of the People's Republic of China for various types of water pollutants, the discharge of wastewater from cleaning agents should comply with the national standard for comprehensive wastewater discharge (GB8978-1996),; The local standard of Guangdong Province "Guangdong Province Water Pollution Emission Limits" DB4426-2001. In addition, according to GB3838, the execution standard level of sewage discharge is divided into water areas for sewage discharge. Industrial sewage discharge waters belong to Class IV: mainly applicable to general industrial water use areas and entertainment water use areas that are not directly in contact with human beings, and should comply with Class II standards. According to the pollutant classification standards, the pollutants generated by water-based cleaning agents during the rinsing stage of the cleaning process belong to the second category of pollutants.




Compared to GB8978-1976, DB44/26-2001 has stricter and more detailed requirements for the amount of various substances in emissions. According to the discharge standard of DB4426-2001, the following items are involved in the discharge of rinsing water generated by our water-based cleaning agent during the rinsing stage:


For wastewater generated during the cleaning process, national and local regulations must be followed before discharge. Our suggestion for the discharge of cleaning agent wastewater is




1) Build a self built treatment system and discharge it into the municipal sewage pipeline network after passing the treatment.




2) Store and transport to a third-party enterprise that meets the processing qualifications for outsourcing processing.




We usually recommend choosing the second option.

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