In the production of daily chemical products, the main sources and composition characteristics of wastewater vary depending on the final product. The wastewater generated by various detergent factories is generally mainly composed of surfactants and additives, commonly known as synthetic detergent wastewater or surfactant wastewater. A large amount of saponification wastewater is produced in soap production, and some large daily chemical factories produce a variety of daily chemical products, resulting in more complex wastewater; Daily chemical wastewater also includes toothpaste wastewater, essence and spice wastewater, etc.

Daily chemical wastewater contains a large amount of suspended solids, which have good utilization value. If not pretreated, it will lead to significant changes in water quality, CODThe phenomenon of increased value and sludge floating up affects post-treatment and increases the load on subsequent facilities. Therefore, pre-treatment of daily chemical wastewater should be carried out first to recover solid substances before treating the wastewater. Pre treatment includes grid screening, sedimentation tank, settling tank, pre sedimentation, etc.

There are many methods for treating daily chemical wastewater, such as coagulation, electrochemical method, electron beam method, traditional anaerobic aerobic biochemical method, rotary contact oxidation method, ozone oxidation method, activated carbon treatment method, membrane treatment method, etc. The sewage treatment process often uses one or more of the above methods to treat sewage and improve the sewage treatment rate.

Wastewater treatment process