Investigating the current status of the quality of wastewater entering the sewage treatment plant of Kerman city

Subject Areas : The Application of Chemistry in Environment

Ziba  Kazemi ¹ (Department of Civil Engineering, Islamic Azad University , Branch of Ahar, Ahar, Iran)

Received: 2023-01-28 Accepted : 2023-06-13 Published : 2023-05-22

Keywords: Kerman, sewage, Treatment Plant, Quality Parameters,

Abstract :

Determining the quantitative and qualitative characteristics of the raw wastewater entering the treatment plants is one of the main pillars of designing the wastewater treatment plants. This research was conducted with the aim of investigating the quantitative and qualitative characteristics of the wastewater entering the sewage treatment plant of Kerman city. In addition to the continuous measurement of wastewater entering the treatment plant, five-day biochemical oxygen demand concentration (BOD), chemical oxygen demand concentration (COD), total suspended solids (TSS) and total Kejdal nitrogen (TKN) in 24-hour composite samples according to Flow rate was measured. The average value for three years from 2016 to 2018 for BOD is equal to 287.6 mg/liter, COD is equal to 413.9 mg/liter, TSS is equal to 140.9 mg/liter, and TKN is equal to 1.48 mg/liter. Which shows that it is higher than the design values of modules 1 and 2 and requires changes in the qualitative specifications of the wastewater entering modules 1 and 2.