Development Trend and Application Prospect of Green Water Treatment Chemicals

With the continuous improvement of global environmental awareness and the increasingly strict environmental policies, traditional water treatment chemicals are gradually unable to meet the needs of green development due to problems such as possible secondary pollution and high biological toxicity. In this context, green water treatment chemicals have become a hot spot in the development of the water treatment industry due to their advantages of non-toxicity, biodegradability and environmental friendliness. This article will discuss the core characteristics, main types and application prospects of green water treatment chemicals, and interpret the green transformation trend of the industry.

The core characteristics of green water treatment chemicals are "environmental friendliness" and "high efficiency and energy saving". Compared with traditional chemicals, green chemicals will not cause harm to the environment during production, use and degradation, and have the advantages of low chemical consumption, high treatment efficiency and no need for complex subsequent treatment. For example, traditional phosphorus-containing corrosion and scale inhibitors may lead to water eutrophication, while green corrosion and scale inhibitors such as polyaspartic acid (PASP) and polyepoxysuccinic acid (PESA) not only have excellent scale and corrosion inhibition effects, but also are biodegradable, will not cause water pollution, and meet environmental protection requirements.

At present, green water treatment chemicals have formed a number of categories, covering flocculation, corrosion and scale inhibition, disinfection and sterilization and other fields. In the field of flocculants, natural polymer flocculants such as chitosan and starch graft copolymers have attracted much attention. These chemicals are derived from animals, plants or microorganisms in nature, are biodegradable, and have the characteristics of good flocculation effect and no secondary pollution. They are suitable for scenarios with high water quality requirements such as drinking water and food processing wastewater. In the field of corrosion and scale inhibitors, in addition to synthetic green chemicals such as polyaspartic acid and polyepoxysuccinic acid, plant extracts such as tea polyphenols and glycyrrhizic acid extracts also show good corrosion inhibition effects. These chemicals have both natural and environmental protection properties and have become an important development direction of corrosion and scale inhibitors. In the field of disinfection and sterilization, green disinfectants such as chlorine dioxide and ozone have gradually replaced traditional chlorine disinfection due to their high disinfection efficiency and no harmful by-products, and are widely used in drinking water, swimming pool water and other treatment scenarios.

The application prospect of green water treatment chemicals is very broad, and they have great promotion value in many fields such as municipal water supply, industrial water treatment and agricultural irrigation. In the field of municipal water supply, with the improvement of residents' demand for drinking water safety, green flocculants and disinfectants will become the core chemicals to ensure drinking water quality; in the industrial field, chemical, power, printing and dyeing and other industries have an urgent demand for green transformation. Green corrosion and scale inhibitors, decolorants and other chemicals can help enterprises achieve the dual goals of "compliance discharge" and "energy saving and consumption reduction"; in the agricultural field, green water treatment chemicals can be used for the purification of irrigation water, reducing the pollution of pesticides and chemical fertilizers residues to soil and crops, and helping the development of green agriculture.

In the future, the development of green water treatment chemicals will show three major trends: first, develop more efficient and low-cost natural polymer chemicals, reduce the procurement cost of green chemicals, and improve their market competitiveness; second, promote the multi-functionalization of chemicals, develop composite green chemicals with multiple functions such as flocculation, corrosion inhibition and disinfection, and simplify the water treatment process; third, combine intelligent technology to realize the precise control of chemical dosage, further improve the treatment efficiency and reduce chemical waste. It is believed that with the continuous breakthrough of technology, green water treatment chemicals will gradually replace traditional chemicals and become the mainstream of the water treatment industry, providing h3 support for the sustainable utilization of water resources.