Problems of sewage treatment plants and their solutions

by

Y.V. Sizova, E.E. Borisova, D.P. Kruglov

GBOU HE Nizhny Novgorod University of Engineering and Economics

Nizhny Novgorod region, Knyaginino, Oktyabrskaya St., 22a

E-mail: sizova_yuliya@bk.ru

DOI: 10.33075/2220-5861-2025-1-07-20

UDC  551.324.63 551.583              

EDN: https://elibrary.ru/jkwfex

Abstract:

Wastewater treatment is necessary to protect the environment, human health and to prevent serious environmental, sanitary and economic problems. Currently, there has been an increase in the population, along with the fresh water requirements for drinking, cooking, agriculture, industry and household needs. The growth of industry and agriculture leads to an increase in demand for water, which creates an additional burden on water resources. Under these conditions, wastewater treatment and reuse of treated water are becoming a key solution to ensure a sustainable water supply. The paper considers the results of chemical analysis of river water samples taken in the area of discharge of treated domestic wastewater. Samples were taken above (background gate) and below (control gate) their discharge by sewage treatment plants located on the coast of the Imza River (Nizhny Novgorod region). It was revealed that the quality of water samples is satisfactory. The chemical composition of wastewater samples before and after wastewater treatment was also studied. Based on the conducted research, it was revealed that the purification technology used is workable, but requires optimization to reduce the content of organic compounds (COD) and biogens (phosphates). It is proposed to introduce post-purification stages using sorption filters and reagent phosphate precipitation.

Keywords: environmental safety, water bodies, chemical composition of water, sewage treatment plants

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