According to the performance and function of the agent, current water treatment agents are mainly divided into: flocculants, corrosion inhibitors, scale inhibitors, bactericides, oxygen scavengers, sludge dispersants, sludge dewatering agents, demulsifiers, slime treatment agents, etc. .
(1) Corrosion inhibitor
Corrosion inhibitor, also known as corrosion inhibitor or corrosion inhibitor, is a chemical substance or compound substance that can prevent or slow down corrosion when it exists in the environment (medium) in an appropriate concentration and form. In the process of industrial water treatment, corrosion inhibitors are usually used as a component of water treatment agents in combination with other chemicals.
2) Antiscalant
In industrial water systems, scaling is the main obstacle besides corrosion of materials and equipment. Chemical agents that can prevent the formation of scale and dirt or inhibit their deposition and growth are collectively called antiscalants. The molecular structure of antiscalants generally contains a variety of functional groups, which perform the functions of chelating, adsorbing and dispersing in the water system. They can exert the "one agent multi-effect" function of water treatment agents, that is, one compound has the function of scale inhibition at the same time. , corrosion inhibition, flocculation, sterilization, dispersion and other two or more effects.
(3) Scale inhibitor and dispersant
Commonly used scale inhibitors in water treatment include: chelating agent type, organic phosphate type, water-soluble polymer type, natural organic compounds, etc. Among them, water-soluble polymers ( Containing natural polymer compounds), etc. are called scale inhibitors and dispersants.
(4) Bactericidal dispersant
Water treatment biocides refer to a type of reagents used to control or kill microorganisms such as bacteria and fungi in water. They interfere with and destroy certain aspects of microbial life activities, thereby controlling the reproduction of microorganisms.
