PENENTUAN DAYA TAMPUNG BEBAN CEMARAN SENYAWA NITRIT DAN NITRAT MENGGUNAKAN PROGRAM QUAL2E DENGAN SIMULASI FISIK SUNGAI (STUDI KASUS : SUNGAI TUNTANG, JAWA TENGAH)

Abstract

Nitrite (NO₂-N) contaminant load capacity of Tuntang River at maximum stream is fulfill the quality standard Class I, II, or III by a capacity between 0 – 70,3 kg/day. Whereas Nitrate (NO₃-N) contaminant load capacityof Tuntang River is fulfill the quality standard Class I and II by a capacity between 11414,15 – 11664,35 kg/day and fulfill the quality standard Class III and IV by a capacity between 23328,71 – 23578,91 kg/day. From Qual2E simulation by the rivers morphology (Mannings coefficient, side slope, width and slope) found when Manning coefficient is increase so contaminant load capacity of NO₂ and NO₃ is increase. But rivers side slope coefficient have not a influence significantly to contaminant load capacity of NO₂ and NO₃. If rivers width coefficient is increase so contaminant load capacity of NO₂ is increase but it isn’t happen to contaminant load capacity of NO₃ is constant. If rivers slope coefficient is increase so contaminant load capacity of NO₂ is decrease but it isn’t happen to contaminant load capacity of NO₃ is constant.