Chemical phosphorus removal usually does not exist alone, usually in the biological phosphorus removal on the basis of chemical-assisted dephosphorization, phosphorus phosphorus phosphorus removal agent to the polyaluminum chloride in the phosphorous waste water dosing in the hydrolysis of waste water to form aluminum Metal ions, aluminum ions can be combined with the soluble phosphate in the wastewater into non-soluble phosphate precipitate, so as to achieve the removal of phosphate ions in wastewater. Chemical phosphorus removal requires chemical reagents to remove phosphorus reaction, the commonly used agents are polyaluminium chloride flocculant, polyphosphate and organic phosphate) is a process of complete removal. Due to the improvement of phosphorus wastewater discharge standards. Com / hope to adopt. The coagulation of polyaluminium chloride works by decomposing it in the waste water and by compressing the charge layers on the surface of the phosphate ions so they do not react to anything. chuangji, adsorption bridges make the phosphate and other organic pollutants in the wastewater quickly coagulation into a group, bonded into a floc precipitation.Phosphorus removal by chemical methods which factors affect the polyaluminium chloride in wastewater treatment is often used as the addition Phosphorus use. With the use of phosphorus in conjunction with the situation