Study on sewage characteristics in rural China and pollutants removal performance of biologically enhanced internal circulation treatment system.

ABSTRACT: With rapid economic development and urbanization in China, rural wastewater treatment has become an important issue. This study investigated 63 rural sewage treatment stations in northern, central and southern Shaanxi, China for a 1-year period, 2021 to 2022. The main purpose of the research was to investigate the quality and discharge characteristics of rural sewage, along with current problems in rural wastewater treatment, in order to provide evidence for the optimal construction and operation of rural sewage treatment stations. We found that the biodegradability of rural wastewater is adequate, and BOD₅/COD ratio in sewage was 0.4, which is suitable for biological treatment. It has obvious intermittent flow cut-off characteristics, and the range of cut-off duration of sewage

SUBMITTER: Rong Y 

PROVIDER: S-EPMC10593821 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature