Use of different types of reagents before wastewater treatment by biofiltration technology

Biofilters are used for biological wastewater treatment and refer to facilities in which the process of water treatment is carried out with the help of biofilm attached to the load. The use of these filters is becoming more and more relevant in the modern world due to the growing pollution of the environment. This method is effective in treating wastewater from organic matter. It is more environmentally friendly and sustainable. The purpose of this work is to perform a set of analyses of incoming raw sewage treatment and obtain technological parameters of the process of reagent treatment to reduce pollution before the use of biofiltration. The research was carried out by laboratory tests, the direction of which was to determine: the optimal types of reagents, points and sequence of their dosing, correlation of sedimentation/removal of compounds of pollutants depending on the change in doses of reagents, the effectiveness of using different coagulants and flocculants, the optimal combination of reagents. As a result of the laboratory tests conducted, the study of pretreatment issues before the main stage of treatment on biofilters was carried out, the initial data obtained by sampling from the industrial site were analyzed, and a feasibility study of the choice of biofiltration technology was given.