Why should polyaluminum chloride be used for sewage treatment?

To use polyaluminum chloride in sewage treatment, we must first understand its properties.

Polyaluminum chloride (PAC) is a light yellow and yellowish brown liquid, which is a water-soluble inorganic polymer between aluminum chloride and aluminum hydroxide. It is called water treatment flocculant.

In the process of water treatment and purification, polyaluminum chloride can accelerate flocculation, make impurities in water form floc precipitation, and quickly achieve the effect of relatively complete separation of water and impurities.

Compared with the traditional inorganic coagulant composed of low molecular crystalline salts, polyaluminum chloride is composed of inorganic high molecular polymers with various forms. Flocculation and sedimentation speed is fast, and the water purification effect is remarkable, which can effectively treat heavy metals such as arsenic and mercury in water. In addition, it has a wide PH range and is non-corrosive to equipment and pipelines, so it is widely used in drinking water, industrial water and sewage treatment.