ANALYSIS STUDY ON THE SELF PURIFICATION ABILITY OF KLAMPOK RIVER, ASSESSED FROM ORGANIC PARAMETER OF DISSOLVED OXYGEN (DO) AND BIOCHEMICAL OXYGEN DEMAND (BOD) (Case Study: Segment Sidomukti Village, Kec Bandungan – Poncoruso Village, Kec Bawen)
Winardi Dwi Nugraha, Anik Sarminingsih, Adea Damatita
Department of Environmental Engineering* Engineering Faculty, Diponegoro University
Abstract
Klampok River is a river that administratively located in Semarang District in which the Headwaters lies in Sidomukti Village, Bandungan Sub-District and the downstream lies in Pringsari Village, Pringapus Sub-District. The fact that population growth and a large number of human activites such as houshold chores, agricultural (husbandry) and industrial works can eminently give impact on the quality of Klampok River-s water has driven this research to be in place. Basically, a river has its inherent competence to purify itself on certain defilement condition. The prime aim of this study was to determine (discern)the ability of Klampok River-s to do self purification based on DO and BOD parameter by using Streeter-Phelps method to obtain oxygen sag curve and Qual2KW program to simulate the water quality. By this study, the value of deoxygenation constant K= 0,226 and the reaeration constant R= 0,162 on segment 2 and K= 0,226 and R=0,217 on segment 3 will be gained. Based on that result, we will get the purification constant fs= 0,717 on segment 2 and fs= 0,956 on segment 3, in which segment 2 is function as active decomposition zone and segment 3 is as recovery zone.
Keywords: Self Purification, Streeter-Phelps, BOD, DO, Deoxygenation, Reaeration
Topic: Environment, Health, and Safety