With the continuous development of society, more and more people are beginning to pay attention to resource utilization, and people are gradually realizing the importance of water resources. Nowadays, the concept of green chemistry has gradually attracted the attention of all sectors of society, and green and environmentally friendly water treatment agents have been created, providing important support for promoting the development of future water treatment technology. Green water treatment technology is a relatively environmentally friendly way of water resource treatment at present, and is an important measure to achieve sustainable development of water resources and protect water resources from environmental pollution.
1. Concept of green water treatment agent
Green water treatment agent, also known as environmentally friendly water treatment agent, belongs to the clean production process. It does not affect human health and the environment during use, and can be used as an environmentally friendly and degradable water treatment agent. The scale inhibitor, corrosion inhibitor, flocculant, and scale inhibitor in green water treatment agent have basically reached the “green” standard and have begun to be put into use.
2. Types of green and environmentally friendly water treatment technology
2.1 Reverse osmosis treatment technology
Reverse osmosis treatment technology is a technology with high environmental requirements. This technology is usually used in coastal areas in my country, because the principle of this technology is to separate water quality according to the different molar fractions of fresh water and salt water under a certain temperature environment, and finally make the water quality meet the corresponding requirements.
2.2 Ultrasonic water treatment technology
Ultrasonic water treatment technology is not mature enough and is in the stage of research and development. Its working principle is to introduce high-power ultrasonic waves into the water, purify the water quality through ultrasonic waves, and achieve the purpose of water purification. The water quality purified by ultrasonic water treatment technology can meet the standards of industrial and domestic water.
2.3 Advanced oxidation treatment technology
Advanced oxidation treatment technology is an advanced water treatment technology, because under certain conditions, the use of advanced oxidation treatment technology can produce free radicals with strong oxidizing ability, at which time the pollutants, microorganisms and harmful substances in the water quality can be effectively decomposed. This is a chemical treatment technology, which is very helpful for improving the existing water quality and optimizing the water quality components.
3. The current status of green water treatment agents
Secondary pollution problem. The components of water treatment agents are mainly flocculants and coagulants, of which inorganic polymers and polyacrylamide account for half of the components. These two compounds may cause harm to human health. For example, the substances in iron salt flocculants are easy to deteriorate, and these pollutants are extremely corrosive and can easily cause damage to water treatment machines or equipment. In addition, excessive aluminum salts entering the tap water people drink will pose a great threat to people’s health.
4. The development direction of new green and environmentally friendly water treatment agents
The development of water treatment technology requires the support of scientific and technological progress, and for new technologies, innovation is the primary productive force. It can be seen that for water treatment technology, the continuous development of new technologies and methods is the future development direction. Water resources are different from other resources. The standard for it is based on living and production water. Therefore, the composition of water treatment agents is very friendly. The development of non-toxic, harmless and green water treatment agents is the development direction of water resource management in the future. At present, many industrial production enterprises use a large amount of cooling water in the process of production, and there are still many problems in the use of circulating cooling water, such as poor water quality, high microbial content in water, and sludge precipitation. These circulating water problems will directly affect industrial water use, thereby reducing production efficiency.
As a country with severe water shortage and extremely uneven distribution, how to use water resources efficiently and pollution-free and save water is a problem we have been studying. With the increasingly serious damage to the water environment caused by industrial and life development, how to use water resources in an environmentally friendly way is also a problem we need to study. Green and environmentally friendly water treatment technology is a water treatment method that came into being under this situation. It generally has the characteristics of cleanliness, water saving, and environmental protection. Through the analysis of the current types of green and environmentally friendly water treatment technology processes, this paper explores the opportunities currently facing the development of water treatment agents in my country, and then proposes the future development direction of green and environmentally friendly water treatment chemicals.
