Water chemicals

Water treatment Chemicals’ Design and its Application

       With an increasing shortage of water resource, more attention is paid to the protection of water environment and the reuse of the water, causing a huge demand of water treatment chemicals. Water treatment chemicals, including the agents used in the process of circulating cooling water processing, seawater desalination, membrane separation, coagulation, adsorption and ion exchange etc., are widely used in chemistry, petroleum, textile, printing and dyeing, environmental protection and other industries, so as to achieve the purpose of saving water resource and preventing pollution.


       Over the years, we have achieved rich experience in the field of industrial wastewater treatment and came up with developed scheme on circulating cooling water treatment. The green water treatment chemical--Polyepoxysuccinic acid (PESA) and Polyaspartic acid (PASP) are non-phosphorus, degradable, non-secondary pollution water treatment chemicals. These two chemicals are widely used in industrial wastewater treatment. Meanwhile, they could be used as detergent, dispersing agent, super water adsorbents, drug dispersing agent and so on. This invention of PESA and PASP has been awarded the Second Prize of Shanghai Scientific and Technological Progress.


       In the field of coagulant synthesis, our chief professor (Dr. Li Fengting) has developed the one step production method of solid silicon polymer ferric sulfate and the poly aluminum ferric chloride (PAFC) preparation method. In response to the serious pollution situation, our team formulated many special coagulants, which is designed for papermaking wastewater, coking wastewater, and landscape water treatment. The effect is very prominent and these agents are well received.


       In addition, in recent years the team have also made new breakthroughs in the fields of algaecide, adsorbent and membrane cleaning agent. Several technology has been authorized to obtain the invention patents.


       Since 2000, our group has presided over more than 30 projects supported by enterprises and province or ministry. We were awarded one first prize of Shanghai Scientific and Technological Invention, several prizes of Province Scientific and Technological Progress, one second prize of the Ministry of Environmental Protection, and one silver prize of CIIF, achieving remarkable and positive social impact.