In recent years, with the booming development of the construction industry, there has been a shortage of sand and gravel, and the quality is getting worse and worse.
Various types of mountain sand and machine sand with high mud and powder content have to be used.
Due to strict supervision by environmental protection departments, it is explicitly required that wastewater from sand and gravel production enterprises shall not be discharged outside.
Therefore, a large number of sand and gravel production enterprises use coagulants in sewage treatment processes to accelerate the sedimentation of suspended solids in wastewater, enabling them to quickly and effectively recycle the sedimentation treatment of wastewater after sand washing.
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