Mine waste water manufacturers analysis for many years, mining causes ground collapse and cracks in mining areas, has a huge impact on water resources.The decline of surface water level has seriously affected the sustainable development of industry and agriculture in China, and also affected people's life.Our coal mine management personnel have the responsibility to mine mine waste water treatment resources into the coal mine and surrounding mining rebates, in order to achieve near zero emissions, effectively protect the environment, improve the environmental quality of mining people's livelihood.

The original groundwater has been destroyed by mining.Settlement and crack are caused after goaf filling.In the process of mining, sewage flows into the underground mining space along the original cracks and new cracks, forming mine wastewater.Mine waste water is a large amount of waste water discharged during coal production.This is sewage that cannot be used directly because of the suspension of coal slime.If it is discharged outdoors, it will cause slime to deposit in the river and affect the surrounding environment, which is in violation of environmental protection laws.According to statistics, every 1 ton of raw coal mining, the average discharge of about 2 tons of mine wastewater.Reduced surface water has led to severe water shortages.

The main pollutant of mine wastewater is suspended solids.The main components of these suspended solids are coal dust, rock dust and other fine particles, especially coal dust.It is characterized by high concentration, fine solid particles and high ash content.The properties of mucous water are very complex, which not only have suspension properties, but also have certain colloid properties.It concentrates fine particles that are difficult to handle, so appropriate processes and processing equipment must be selected.

PAC- polyaluminum chloride makes the diffusion layer of fine particles compressed, electromotive force decreased, threshing and unstable, and gather together into fine alum flowers.

The hydrogen bonding of PAM -- polyacrylamide and the bridging and flocculation of the chain-like polymer, and then the aggregated fine alum flowers are further adsorbed to form a dense large alum network, in which there are several fine powdery particles as the core flowers.