Evaluation of the Efficiency of Wastewater Treatment of a Coal Mining Enterprise and its Impact on the Pollution of Small Rivers

The analysis of the qualitative composition of the waste water of the coal mining enterprise was carried out. As a result of monitoring studies, data on the composition of pollutants discharged into the water of small rivers were obtained. It is established that the feature of quarry waters is an increased content of suspended solids (inorganic dust) from drilling, blasting, overburden and mining operations; petroleum products from oil and fuel spills; nitrites and nitrates formed when using explosives; iron formed as a result of the oxidation of pyrite (often found in the host rocks), metal structures and parts of equipment and sulfates. The applied technology of wastewater treatment at a coal mine is considered, and its effectiveness is justified. It is shown that the main problem in the field of water resources protection is the lack of adapted technologies for deep wastewater treatment in relation to a specific enterprise. The ways of improving the technological level and quality of treatment of quarry wastewater are determined.