Phosphorus containing wastewater treatment often use chemical phosphorus removal agents to treat, many enterprises in the treatment process will appear in the wastewater phosphorus removal effect is not good, so how to solve this situation? First of all, we need to understand what causes this to happen. Reasons for the poor phosphorus removal effect of wastewater:

1. The bad phosphorus removal agent selected by the agent is generally aluminum salt and iron salt, aluminum salt has aluminum sulfate, sodium aluminate and polyaluminum, etc., of which aluminum sulfate is more commonly used. Iron salts are ferric chloride, ferrous chloride, ferrous sulfate and ferrous sulfate, of which ferric chloride is the most commonly used. Also useful lime phosphorus removal, relatively few.

In general, the effect of phosphorus removal iron salt > Aluminum salt > Calcium salt! However, compared with the new special phosphorus removal agent SPT-P5, these three phosphorus removal agents are limited in both effect and dosage, so selecting the appropriate phosphorus removal agent is an effective way to solve the problem of phosphorus removal.

2. The PH range affects the effect of the PH range of wastewater on chemical phosphorus removal. Aluminum salt and iron salt are used as phosphorus removal agents, and the PH range required for the best phosphorus removal effect is 6.5-7.0. The PH range of special phosphorus removal agent SPT-P5 is 2.5-4.5.

The alkalinity of the general wastewater has a greater impact, and when the phosphorus removal agent makes the alkalinity of the wastewater too low, it will affect the reaction effect of the phosphorus removal agent, so once this situation occurs, it is necessary to add alkali immediately.

3. The influence of the amount of phosphorus removal agent on the effect of phosphorus removal, the amount of phosphorus removal agent added in the process of chemical precipitation phosphorus removal is in a reverse parabola shape. When we test the best phosphorus removal effect, more or less will cause the effect of phosphorus removal to decline.

In summary, the above three points are the main methods to solve the effect of chemical phosphorus removal.