What is high-purity poly-aluminum chloride (PACL)?

Poly-aluminum chloride (PACl) is one of the common coagulants for water and wastewater treatment. A new Chinese national standard of PACl has been implemented, where the concentration of insoluble substances, iron and heavy metals is to be controlled strictly, then researches on the preparation of high–purity PACl are needed.

Why is polyaluminum chloride a good coagulant for water treatment?

Polyaluminum chloride (PAC) is highly effective coagulant for water treatment over conventional coagulants because of low dosage requirement, shorter flocculation time, smaller amount of sludge, high efficiency and low aluminum residual in treated water .

How to manufacture polyaluminium chloride?

Method for manufacturing polyaluminium chloride with aluminum vanadine and calcium aluminate powder CN104671269A(en) 2015-06-03 Method for producing polyaluminum chloride from hydrogen chloride waste gas and aluminum salt water waste liquid generated from anthraquinone synthesizing production

Which polyvalent ions enhance the performance of polyaluminum chloride in water treatment?

Polyvalent anions including sulfate and phosphate are known to enhance the performance of polyaluminum chloride in water treatment. The ions can be incorporated into the products of the present invention either before, during, or after the process of raising the basicity.

How is polyaluminum chloride (PA) made?

Method for producing polyaluminum chloride from hydrogen chloride waste gas and aluminum salt water waste liquid generated from anthraquinone synthesizing production CN106517288A(en)

Which ions stabilize polyaluminum chloride composition?

The aluminum salts also generally have some water of hydration associated with them. Calcium ions are known to stabilize polyaluminum chloride compositions. Said calcium ions may be introduced to products of the present invention by adding a variety of calcium salts.