DESIGN OF UNITS IN SITU CIPOLERANG WATER TREATMENT PLANT (WTP), GARUT REGENCY

• Main Author: Atiqadhia Munir, Najla
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/50732
• Institution: Institut Teknologi Bandung

Meeting the drinking water needs of the Garut Regency community is currently the responsibility of the governmental institution of PDAM Tirta Intan, Garut Regency. However, until the end of 2018, PDAM Tirta Intan Garut Regency only managed to serve around 14 districts out of a total of 42 districts in Garut Regency. Service coverage for residents in the Garut Regency only can be fulfilled by 14.92% of the total administrative population and 55,66% of the total population in the exsisting service area. This has become one of the main highlights of the PDAM Tirta Intan problem that is currently being faced. Departing from this problem, PDAM Tirta Gemah Ripah as Regional PDAM of West Java cooperated with PDAM Tirta Intan is planning to build a Water Treatment Installation (IPA) with a capacity of 100 liters per second with a 10-year planning period in the area of Sadang Village, Sucinaraja District, Garut Regency to meet the needs of clean water for areas that have not been served. The source of raw water that will be used comes from the Situ Cipolerang Spring. The WTP is planned to serve 10 villages in three different sub-districts, namely Karangsari, Situjaya, and Situsari Sub-districts in Karangpawitan District; Cinunuk, Wanamekar, Winaraja, Wanasari, and Wanajaya Sub-districts in Winaraja District; Sadang and Tegalpanjang villages in Sucinaraja District. The planned area of the WTP is 11,900 m2 built on an empty land of 14,700 m2 located at 200 meters away to the south of the Situ Cipolerang Spring. Based on the results of the analysis of water quality at the Laboratory of Water Quality ITB Environmental Engineering, there are five parameters that exceed the quality standards of the Minister of Health Regulation No. 492 of 2010 and class 1 of Government Regulation Number 82 of 2001. These parameters include turbidity, BOD, COD, organic matter, and total coliform. The alternative selection method of used to determine the configuration system along with the type of unit is Simple Additive Weighting (SAW) and the selected system configuration is intake with fine screen, filtration with slow sand filter, disinfection with chlorine, and ground reservoir.