PENENTUAN DAYA TAMPUNG BEBAN CEMARAN FECAL COLIFORM AKIBAT KONDISI SANITASI MENGGUNAKAN PROGRAM QUAL2E (Studi Kasus Kali Semarang, Jawa Tengah)

Karimatu Sa’diyah, Irawan Wisnu Wardhana, Wiharyanto Oktiawan

Abstract


Semarang river is located in Central Semarang City which has length 8,25 Km and the large of the watershed or catchment area is 4,430 Km2.  With a density of settlements and high population, lack of sanitation infrastructure, rob sometimes happened and land subsidence which is occurred makes Semarang River area is susceptible in health risks.

Degradation of water quality occurs due to the contamination of bacterium category of Coliform because of high population, bad of sewage system, lavatory fabrication, septic tank, and infiltration wells which is not eligible both in quality and layout based on pollutant source. Knowing the level of the contamination in Semarang River is needed by identified the load capacity Fecal Coliform contamination by using software QUAL2E.

The result of its simulation based on the minimum capacity of Fecal Coliform compared by quality standard of PP No. 82 year 2001 that Semarang River is not comply the requirements of the quality standards of class I Fecal Coliform is > 1.23 E +13 cell/day , class II is> 1.23 E +14 cell/day, class III is > 2,46 E +14 cell/day and IV is > 2.46 E +14 cell/day. Simulation based on the maximum capacity of Fecal Coliform compared by quality standard of PP No. 82 year 2001 that Semarang River is not comply the requirements of the quality standards of class I Fecal Coliform is > 7,70 E +13 cell/day, class II is > 7.70 E +14 cell/day, class III is > 1.54 E +15 cell/day and class IV is > 1.54 E +15 cell/day. The domestic contamination is the largest source of pollution in Semarang River area. It is because the lack of good sanitation in Semarang River area. There are so many things that cause the bad sanitary condition in Semarang River area, such as there’s no waste treatment and there are so many septic tank which are not working property.

Keywords


Semarang river,contaminant load capacity, simulation

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