How to deal with high-concentration industrial phosphorus-containing wastewater?

High-concentration phosphorus-containing wastewater treatment is difficult to remove by a single biological method or chemical method.

It will cause a great burden on the entire single biological process or chemical method, which will reduce the treatment effect of the entire treatment process or make it impossible to run continuously. Therefore, biological method + chemical method is often used in the treatment of high-concentration industrial wastewater. Let's take a look. bar~

Pretreatment - Biological

Due to the unstable operation of the biological phosphorus removal treatment process, the treatment effect is greatly affected by changes in water quality, so it is used as a pretreatment.

Its characteristics are as follows:

1. Biological phosphorus removal has a strong dependence on the concentration of organic matter (BOD) in wastewater;

2. The effect of biological treatment is easily affected by environmental temperature, pH, dissolved oxygen and other factors;

3. The length of mud age also has a direct impact on the effect of phosphorus and nitrogen removal.

Advanced treatment - chemical method

The chemical method is also called the flocculation precipitation method. Chemicals are added to the water to form a precipitation reaction to generate insoluble phosphate.

Chemical phosphorus removal is essentially a physical and chemical process, and phosphorus removal agents are directly added to the sewage.

The advantages are that the treatment effect is stable and reliable, the operation is simple, the sludge will not release phosphorus again during the treatment and disposal process, and the ability to withstand shock loads is also strong, which can achieve the effect of advanced treatment.