DESIGN OF TRANSMITION SYSTEM AND RENGGANIS WATER TREATMENT PLANT IN SUMEDANG DISTRICT

• Main Author: Nur Fauziyah, Sofia
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/46598
• Institution: Institut Teknologi Bandung

Abstract. Sumedang Regency is one of the cities in West Java Province that still lacks access to drinking water for its people, especially access to drinking water using pipes. While Sumedang Regency is a developing district, both in population and economy so that the water demand in Sumedang Regency will continue to increase. The lack of access to drinking water is due to the fact that Sumedang Regency does not yet have a Drinking Water Supply System (SPAM) that can serve the needs of the Sumedang Regency community as a whole. Based on data from the Main Design of Drinking Water Supply System for Regional Water Supply Company Tirta Medal Sumedang, PDAM Tirta Medal is planning a Drinking Water Supply System in several strategic areas that have not received drinking water services. One of the plans to create a comprehensive Drinking Water Supply System in Sumedang Regency is to build a Rengganis Drinking Water Treatment Plant. As the name implies, the raw water source of Rengganis WTP comes from Rengganis Spring located in Cimarias Village, Pamovery District, Sumedang Regency with the planned location of collection at an altitude of 1061.31 masl. The Rengganis WTP service area covers three sub-districts in Sumedang Regency, namely Tanjungsari, Pamunggung, and Cimanggung Districts. Of the three districts, only five villages will be served by Rengganis WTP, namely Cigendel, Haurgombong, Gunungmanik, Cilembu, and Cimanggung Villages because these villages do not yet have access to drinking water, unlike other villages in the three districts. Based on the service target to be achieved, namely 90% of services, Rengganis WTP is planned to have a production capacity of 125 liters / second for a 20-year planning period starting from 2020 to 2040. Development will be divided into two stages. Phase I starts from 2020 to 2030, while Phase II will continue from 2030 to 2040. Thus, the planning discharge at Rengganis WTP is divided into two from the initial production discharge in order to meet the Rengganis WTP drinking water needs according to the planning period. The planning discharge in stage I and phase II was 63 liters / second, respectively. This planning discharge is obtained from the projected population and public facilities in the service area, coupled with the needs of the city, water loss, water requirements for IPAM. In addition to the quantity or amount of water production, the quality of raw water also needs to be considered in order to meet drinking water quality standards and safe for public consumption. Rengganis Spring water quality analysis results that have been tested in the laboratory are compared with standard water quality standards in Government Regulation No. 82 of 2001 showing the results that the Rengganis Spring is categorized in Class I where the designation is correct for drinking water. Whereas when compared with Minister of Health Regulation No. 492 of 2010 concerning Drinking Water Quality, only faecal coli parameters and total coliforms are above the standard. From the results of comparison of raw water quality and standards, we can find out the right treatment unit for Rengganis WTP. So the Rengganis WTP treatment unit that will be planned is disinfection and reservoir. A water catchment building and transmission system are also planned to obtain and channel raw water to the Rengganis WTP. A transmission system that flows raw water from a spring infiltration building to a Drinking Water Treatment Plant is planned to use a pump because of the contour of the ground which does not allow raw water to flow with gravity.