Industrial wastewater and domestic wastewater can be discharged or used twice only after the water quality has been treated to meet the standards. Defoamer plays an important role in wastewater treatment. Industrial wastewater treatment will add a variety of chemical additives such as flocculants, sedimentation agents, dewatering agents. Most of these additives belong to the table live class so in the wastewater treatment stage, there will always be a large number of foam, it is necessary to apply defoamer to eliminate the problem of foam in wastewater. The following Nanhui defoamer manufacturers analyze the types of defoamer commonly used in wastewater treatment.
The purpose of wastewater treatment is to reduce pollution and recycling. Therefore, we need to understand the various additives in wastewater in industrial wastewater defoamer is to eliminate foam, so we must understand the various types of defoamer commonly used in wastewater treatment in order to solve the problem of foam in industrial wastewater to improve the efficiency of wastewater treatment and recycling value.
Commonly used defoamer for wastewater treatment is divided into 4 main types
1.Organic silicon type defoamer
Common industrial wastewater or direct discharge wastewater will choose silicone defoamer to eliminate foam because of its cheap price, fast defoaming chemical and physical properties are more stable. The disadvantage is that the foam inhibition performance is poor if there are strong acid, strong alkali, or high temperature conditions are not recommended to use silicone defoamer to defoam.
2.Polyether defoamer
Polyether defoamer is divided into GP, GPE, GPES three. Compared with silicone defoamer it can still maintain good defoaming and foam inhibition performance at low concentrations but will be limited by the temperature defoaming performance is poor. It is very popular in biological wastewater, aeration tank, desalination, spray paint room circulating water, power plant wastewater, garbage leachate, industrial wastewater industry.
3.Modified polyether silicone defoamer
Modified silicone polyether class is a new type of defoamer has good performance of defoaming and foam inhibition is one of the commonly used defoamers for wastewater treatment. In addition to some of the water treatment industry can not be used containing silicon the defoamer is still very strong generality price also has advantages.
4.mineral oil defoamer
Mineral oil, amides, low grade alcohols, fatty acids and fatty acid esters, phosphate ester organic defoamers are part of the first generation of defoamers. The current application in wastewater treatment is relatively small mainly related to its poor bubble-breaking power and the use of harsh conditions for the industrial wastewater treatment field is relatively small cost is also high, so the current application is much less.
