what color is polyaluminum chloride pac

I. Pac color classification and corresponding levels

The color difference of PAC directly reflects its purity level and core components, which are mainly divided into four levels:

 

2. In-depth analysis of production process and application scenarios

1. White PAC: high purity and fine field dedicated

·  production engineering ：

· Spray drying method was used to form high purity aluminum hydroxide powder at high temperature.

·  applicable scene ：

· ✅ Purification of water for food processing (e.g. beverages, dairy products)

· ✅ Pharmaceutical preparation pure water system

· ✅ Cleaning of precision instruments and refining of cosmetic raw materials.

2. Pale yellow PAC: core guarantee of drinking water safety

·  production engineering ：

· Plate and frame filter press process or spray drying method, strict control of heavy metal residue.

·  applicable scene ：

· ✅ Raw water purification of waterworks (removing turbidity and heavy metals)

· ✅ Recycled water treatment system

· ✅ Scenarios with high requirements for water clarity.

3. Golden yellow PAC: the main force of industrial wastewater treatment

·  production engineering ：

· The drum drying method uses calcium aluminate powder and bauxite as raw materials, which has low cost and high yield.

·  applicable scene ：

· ✅ High pollution industrial wastewater (decolorization of printing and dyeing wastewater, heavy metal precipitation of electroplating wastewater)

· ✅ Primary treatment of municipal sewage treatment plant

· ✅ Sedimentation of coal washing wastewater and scale prevention of circulating cooling water.

4. Dark PAC: customized solution for special water bodies

·  production engineering ：

· Iron reinforced drum drying method, adding iron powder to improve the iron content, enhance low temperature activity.

·  applicable scene ：

· ✅ Northern winter low temperature sewage treatment (effective below-5℃)

· ✅ Algae removal from high algal water bodies of lakes and reservoirs (e.g., blue algae outbreak period)

· ✅ Pretreatment of industrial water with high iron impurities.