Industry News

Decolorizing Flocculants in Practical Applications

2020-11-27

Mechanism of sewage action decolorizing flocculant: Colloid particles in sewage are microscopic, surface hydrated, and charged for making them stable.

 

The rapid stirring after dosing is used to promote the chance and number of collisions between the colloidal impurity particles in the water and the colloids hydrolyzed by the point-clearing flocculant. The water's impurity particles first lose stability under the action of the wastewater decolorizing flocculant and then coalesce into larger particles, which then precipitate down or float up in the separation facility.

 

Sewage flocculation is one of the most widely used and common unit operations in many water treatment processes at home and abroad. It is an indispensable key link in the wastewater treatment process. The quality of sewage flocculation and decolorization often determines the operation of subsequent processes, the final water quality, and costs, so choosing point-clear sewage decolorizing flocculant has important technical and economic value to improve water quality and reduce water production costs. Their chemical composition can be divided into inorganic salt flocculants, organic polymer flocculants, and microbial flocculants.

 

Several factors influence the effectiveness of sewage decolorizing flocculants.

 

1. PH value of sewage; (The effect of the reaction of sewage in different PH conditions is different, for example, if the PH value of the spotting agent is greater than 7, it can be added directly, if it is not enough, sodium hydroxide or other alkaline chemicals should be added to adjust).

 

2. the water temperature of the sewage.

 

3. water quality components in wastewater; (In the wastewater industry, many of the same industries use different flocculants and add different amounts due to differences in most manufacturers' raw materials).

 

4. the type of flocculant.

 

5. Amount of flocculant; (add according to the amount derived from the small test, sometimes too much flocculant will not treat the sewage well.

 

6. the order of flocculant dosage. (Polyacrylamide is often added to wastewater coagulation for the last time.)

 

The effect of hydraulics. (Excessive hydraulics will cause the flocculant to be washed away, thus making the wastewater look unclear and the effluent SS not up to standard).

 

These are the things you need to understand in the practical application of sewage decolorizing flocculant.