General situation and characteristics of water treatment chemicals

In the process of industrial water, domestic water and wastewater treatment, water treatment agent is a necessary chemical agent. Through the application of these chemicals, the quality of water can reach the standard. The biggest effect of water treatment chemicals is to control scale and sludge composition, reduce foam, reduce erosion of water contact data, remove suspended solids and toxic substances in water, deodorization, decolorization and softening water quality.

At present, with the rapid growth of water consumption in the world, with various environmental factors, various environmental protection laws (water purification law) are issued one after another, and the requirements are increasingly strict. Therefore, the demand for all kinds of efficient water treatment chemicals is growing rapidly. In China, the crisis of water resources is becoming more and more serious, and the aging of water treatment chemicals is very low, and the quality is not regulated, so it is urgent to accelerate the development of water treatment chemicals, an environmental protection industry in China.

Water treatment agents include flocculant, corrosion inhibitor, scale inhibitor, biocide, laxative, cleaning agent, pre membrane agent, defoamer, decolorizer, chelating agent, deaerator and ion exchange resin.

China's water treatment chemicals were developed gradually after the introduction of large chemical fertilizer plants in the 1970s. Since then, a series of water treatment chemicals have been developed by ourselves. The varieties of water treatment agents in China mainly include scale inhibitor, corrosion inhibitor, bactericide and algaecide, inorganic coagulant, organic flocculant and so on.

Water treatment chemicals can be generally divided into three categories: sewage treatment chemicals, industrial circulating water treatment chemicals, oil-water separation agents.

Commonly used water treatment agents include scale inhibitor, corrosion inhibitor, bactericide and algaecide (bactericide for water treatment), cleaning agent, slime stripping agent, flocculant, coagulant, dispersant and other water treatment agents. Sodium hexametaphosphate is also a kind of water treatment agent.

Characteristics of water treatment chemicals:

The reaction speed is fast. It only takes half an hour to several hours to treat ordinary industrial wastewater.

It has a wide range of action on organic pollutants, and has a good degradation effect on refractory organic pollutants.

It has the advantages of simple process, less investment, long service life, convenient operation and maintenance, ideal treatment effect and less consumption of micro electrolysis reactant.

After the wastewater is treated by micro electrolysis, it will form original ferrous or iron ions in the water, which has better coagulation effect than ordinary coagulants. There is no need to add coagulants such as iron salt, and the removal rate of COD is high, and it will not cause secondary pollution to the water.

It has good coagulation effect, can effectively remove chroma and COD, and greatly improve the biodegradability of wastewater.

This method can achieve the effect of phosphorus removal by chemical precipitation and heavy metal removal by reduction.