There are 8 kinds of chemicals commonly used in sewage treatment.
1. Flocculant: sometimes called coagulant, which can be used as a means to strengthen solid-liquid separation, and is used in primary sedimentation tank, secondary sedimentation tank, flotation tank and process links such as first-class treatment or advanced treatment.
2. Coagulant: auxiliary flocculant plays a role to strengthen the coagulation effect.
3. Conditioner: also known as dehydrating agent, which is used for the conditioning of the remaining sludge before dewatering, and its varieties include some of the above-mentioned flocculants and coagulants.
4. Demulsifier: sometimes called destabilization agent, mainly used for pretreatment of oily wastewater containing emulsified oil before air flotation, and its varieties include some of the above-mentioned flocculants and coagulants.
5. Defoamer: It is mainly used to eliminate a large amount of foam in the process of aeration or stirring.
6. PH adjuster: used to adjust the pH value of acidic wastewater and alkaline wastewater to neutral.
7. Redox agent: used for the treatment of industrial wastewater containing oxidizing substances or reducing substances.
8. Disinfectant: used for disinfection treatment after wastewater treatment or before reuse.
What water treatment agents need to be used in the process of electroplating wastewater treatment, there are many types of chemicals used in electroplating, and we must pay attention to the position and amount of reagents when adding, and the adjustment of heavy metal substances in water quality and pH is very important. Heavy metal substances can only be removed under reasonable pH conditions. The electroplating industry will produce a large number of pollutants in the production process, which belongs to the three high wastewater, and untreated wastewater and waste gas will cause serious environmental pollution to the environment.