STUDY OF RESERVOIR WATERS MANAGEMENT WITH DYNAMIC SYSTEM APPROACH (CASE STUDY: SAGULING RESERVOIR WATERS STATION 1B. SEGMENT)

• Main Author: Fitria Rahayu, Neni
• Format: Theses
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/70854
• Institution: Institut Teknologi Bandung

Saguling Reservoir which is located upstream has a role as the first “filter” for pollutants from Citarum River. The sustainable use of air and the entry of pollutant loads decrease the quality of Saguling Reservoir waters, so it is necessary to study the water quality of Saguling Reservoir as a sustainable management of water resources to improve water quality with a dynamic system approach using STELLA 9.1.3 software. System dynamic model simulation is carried out based on; (1) The pollutant source sub-model includes sub-sector of potential pollution load from domestic, sub-sector of potential pollution load from industry, and sub-sector of potential pollution load from agricultural; and (2) Sub-model of water quality in which BOD is an indicator of water quality and DO is an indicator of water health. Based on the sensitivity test, factors that most influence BOD value are the domestic sub-sector and the industrial sub-sector, so that an intervention will be carried out in the scenario. Based on the simulation results of three scenarios of pessimistic, moderate, and optimistic, the chosen one is the optimistic scenario. In the optimistic scenario there is the highest decrease in BOD and the DO value has met the water quality standard class II (PP No.21 2022). The scenario results for the BOD value in 2019 is 16.00 mg/L while the BAU result is 25.13 mg/L, a decrease of 9 ,13 mg/L. In 2039 the BOD value with the scenario is 10.72 mg/L, and the BAU result is 34.27 mg/L, there is a decrease of 23.55 mg/L. DO values with scenarios ranged from 4.04 mg/L – 4.12 mg/L. In carrying out water management efforts, there are several things that must be considered from an economic, social, and technological perspective. In addition, it is also necessary to pay attention to the role of the community, government, and related institutions in achieving the improvement target