Flocculants: Flocculants are a class of substances that can reduce or eliminate the precipitation stability and polymerization stability of dispersed particles in water, so that the dispersed particles condense and flocculate into aggregates and are removed.According to the chemical composition, flocculants can be divided into three categories: inorganic flocculants, organic flocculants and microbial flocculants.Inorganic flocculants include aluminum salts, iron salts and their polymers.For example: polymeric iron chloride, polyaluminum chloride, polymeric iron sulfate, ferrous sulfate, iron chloride, etc.Organic flocculants, most of the organic coagulants used in sewage treatment are water-soluble linear polymer substances.80% are polyacrylamide products.

Polyaluminum chloride PAC

Function: Water treatment flocculant/coagulant

Purpose: To clarify water quality, flocculation, precipitation, purification, etc.

Content 20% 22% 24% 26% 28% 29% and above

28 29 The content is also drinking water level

How to use polyaluminum chloride：

1. The dissolution ratio of polyaluminum chloride is five percent, that is, 50g of polyaluminum chloride is added to 1 kg of water to dissolve.(The water that dissolves the agent is tap water or purified water)

2. The stirring and dissolving time of the agent is 1-5 minutes, and the standing and dissolving time is 5-10 minutes.

3. The dosage of this agent is added in accordance with a certain percentage, and the specific quantity is determined according to the sewage concentration and treatment standards.

Polyacrylamide

Appearance: White irregular fine particles or white fine powder (also known as powdered polyacrylamide or instant polyacrylamide)

Main function: Sewage treatment flocculant is often used with polyaluminum chloride

Ionic type is divided into cationic, anionic, and nonionic

Use of polyacrylamide：

1.Most of the conventional sewage treatment and purification involved are mainly anionic polyacrylamide, and the amount of anionic amides on the market is the largest and most in demand.

2.Cationic polyacrylamide is mostly used in the field of sludge dewatering to select the appropriate ion degree according to the actual test results.

3. Nonionic polyacrylamide can be understood as a low-hydrolyzed anionic polyacrylamide, which is generally used less, roughly the same as anionic polyacrylamide.

How to use polyacrylamide：

1. Polyacrylamide usually needs to be diluted and dissolved with water before it can be used. It should be noted that the water used to dissolve polyacrylamide needs to be tap water rather than sewage.

2. The dissolution ratio of polyacrylamide is usually 0.1%-0.3%, and the recommended stirring time is 40 minutes.

3. First add a certain amount of water and start stirring. Then add polyacrylamide while continuing to inject water. It needs to be added to the water slowly and evenly (fast addition will cause agglomeration of the agent).