The main characteristics are high turbidity, fine particle size of solids, negative charge on the surface of solid particles, repulsive force between same-sex charges to keep these particles dispersed in water, affected by gravity and Brownian motion; due to the interaction between the interface of solid particles in coal sludge water, the nature of coal washing wastewater is quite complex, not only with the nature of suspension, but also with the nature of colloid.

　　At present, the treatment of coal sludge water in domestic industry generally adopts anionic polyacrylamide to realize solid-liquid separation. The contact between anionic polyacrylamide and coal slurry particles or coal slurry colloid neutralizes the electrical properties of coal slurry surface, reduces the surface repulsion, and makes coal slurry particles coalesce and precipitate.

　　As for the specific choice of which suitable polyacrylamide to use, it is necessary to make a comprehensive choice according to the selection experiment. Generally, the beaker selection experiment is done first, and then the on-board pilot test is done. The more models you have, the more you can choose the right model. Guangdong Shouxin Environmental Protection Materials Technology Co., Ltd. is a global polyacrylamide brand with stable quality, so that we can make accurate model selection and choose the more cost-effective polyacrylamide models for our customers. It is also very important to control the stability of the products, only stable quality products can ensure efficient and stable operation. Shouxin Environmental Protection has professional technical engineers and advanced testing equipment to ensure the stability of the products through strict double supervision and testing at the time of inbound and outbound shipments.