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What kind of chemicals are commonly used in wastewater treatment?


In order to discharge or reuse wastewater after treatment, a variety of chemicals are needed during the process. Depending on the use, these agents can be broken down into the following categories:

The flocculant: sometimes called coagulant, can be used as a means for enhanced solid-liquid separation, the primary settling tank, two tank, flotation tank and three stage treatment or advanced treatment process.

The coagulant flocculant: auxiliary function, strengthen the coagulation effect.

The conditioner: also known as dehydrating agent, used for conditioning before dehydration of residual sludge, the variety includes part of the flocculant and coagulant.

The demulsifier: sometimes referred to as the destabilization agent, mainly used for oil containing emulsified oil waste water pretreatment before flotation, the variety includes part of the flocculant and coagulant aid..

The defoaming agent is mainly used to remove aeration or a large number of bubbles in the agitating process.

Will pH adjustment agent: for acid water and alkaline wastewater pH value is adjusted to neutral.

One redox agent used in treating industrial wastewater containing oxidizing or reducing substances.

8: disinfectant for discharge or reuse disinfection before treatment after wastewater treatment.

Although there are many kinds of drugs, one kind of medicine is used on different occasions and plays a different role, that is to say, it has different titles. Cl2, for example, is used as a coagulant aid in enhancing the coagulation effect of sewage. It is called oxidizing agent when used to oxidize cyanide or organic compounds in wastewater, and is used for disinfection, which is called disinfectant.