What Is Composite Flocculant?

What is composite flocculant?

Compound flocculants refer to macromolecular copolymer complexes formed by a variety of flocculants through reactions, which not only overcome the problem of insufficient efficacy of a single flocculant but also exert the effect of interaction between various flocculants.

In terms of composition, compound flocculants can be divided into inorganic-inorganic, inorganic-organic, and organic-organic types. The characteristics of these three types of compoundccul   ants are briefly described below:

1. Inorganic-inorganic compound flocculants: Inorganic composite flocculants are mainly composed of composite aluminum, iron salts, and silicates. It has a high basicity of polyaluminum salts and strong adaptability to raw water. Its most significant feature is that the molecular of polyferric is large and the settling speed is fast. This type of flocculant is inexpensive and can achieve the purpose of waste treatment and has a good effect in reducing pressure. In addition, inorganic flocculants contain sulfate and phosphate ions, which can also play a role in polymerization and improve the flocculation effect.

2. Inorganic-organic compound flocculants: It has the advantages of performance diversification and variety diversification and occupies a dominant position.   3.organic compound flocculants: This type of flocculant has made certain progress. Compared with homopolyacrylamide, it has the characteristics of good molecular chain, strong flocculation capacity, easier cationization reaction, and wide adaptability.

Compound flocculants are used in surface adsorption water, which is of flocculent colloidal particles; used in interstitial water, it is easy to separate. In the settling tank, by controlling the appropriate retention time, the interitial water is easily separated under the action of gravity; in capillary binding water, fine solid particles form sludge, and on the contact surface of solid particles, under the action capillary force, further form capillary binding water.   Each type of flocculant has its own advantages and disadvantages, and the appropriate choice is the most suitable