Investigation of Wastewater Treatment Plant Behavior for Residential Community within 1 Year

Abstract

Abstract Aim: The effluent generated from wastewater treatment plant (WWTP) is a mixture of several chemicals, including, salts, chemical solvents, strong acidic, and alkaline so the study aimed to investigate the performance and characterization of the WWTP in a residential community to evaluate within the limits of the design of the plant. Methods: For the studying performance of (WWTP), the samples were collected before interred the treatment unit (influent) and after exiting from the treatment unit (effluent) in 24 plastic bottles for each time during 1 year, and used for analysis as chemical oxygen demand (COD), biochemical oxygen demand (BOD), total suspended solid (TSS), PO4, nitrate, chlorine, hydrogen sulfide, and oil, and grease (O and G) parameters and investigated the efficiency of remove to BOD, COD, TSS, and O and G. Results: Results showed the removal efficiency of BOD, COD, TSS, O and G and PO4 in the WWTP as 91%, 82.8%, 83.5%, 67.4%, and 64.7%, respectively, from June 7, 2018, to December 16, 2018. The experimental results indicated that the period from January to March demonstrates the best removal efficiency of COD. Furthermroe, it indicated that suddenly changing amounts in influent had an adverse decrease in the efficiency of biological systems. Conclusions: The performance of SBR was good which was reflected in the final effluent. The finding may back to cumulating high parameter amounts that inhibit microorganism activities when all nutrients were low in the wastewater that wanted to microorganism’s growth. The results proved the solubility of effluent to be discharged on the sewer system and used for irrigation purposes (based on its characteristics).