Ways to Improve Water Quality in Diponegoro Reservoir at Krengseng Watershed, Semarang

Grace , Lucy Secioputri and Rahmat , Kurniawan and Suseno, Darsono and Sudarno, Sudarno (2014) Ways to Improve Water Quality in Diponegoro Reservoir at Krengseng Watershed, Semarang. International Symposium of The 82nd Annual Meeting of International Commission on Large Dams (ICOLD) . pp. 1-10.

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This paper explains how to maintain and to improve water quality in Diponegoro Reservoir. Krengseng watershed is located in Banyumanik sub-district and Tembalang sub-district which is part of Diponegoro University campus area. The influent water to the reservoir mostly comes from urbanize areas. Therefore, the quality of reservoir's inflow should meet with domestic wastewater quality standards. Domestic wastewater sewerage systems and treatment plants are required in Krengseng watershed area in order to improve the reservoir's water quality. Water sample were taken from the Krengseng River at 17 locations during the end of dry season. It shows that the concentration of COD, nitrogen and phosphate exceeded the water discharge criteria. Parameter such as COD, DO, pH, temperature, nitrogen, and phosphate were determined. Therefore, a wastewater treatment plant should be designed. The treatment plants are basically using septic tank as primary treatment and anaerobic filter as secondary treatment. EPA SWMM 5. 0 was utilized to analyze and design the sewer system. A small bore sewer was used as the main idea for the sewer system. Specifications of piping system must comply with the following criteria such as minimum pipe slope more than 0. 006, flow rate between 0. 6-3 mis, and water flow quantity in pipe between 0.2-0.8 of pipe diameter. Total costs for this design are planned about Rp 133.819.636.500, 00 with construction duration for a year and ten months.

Item Type:Article
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Faculty of Engineering > Department of Civil Engineering
Faculty of Engineering > Department of Civil Engineering
ID Code:51026
Deposited On:20 Dec 2016 15:46
Last Modified:20 Dec 2016 15:46

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