PERENCANAAN INSTALASI PENGOLAHAN AIR MINUM KOTA GARUT

• Main Author: Marlianti, Wahyu
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/83138
• Institution: Institut Teknologi Bandung

Garut City is a part of urban area in Kabupaten Garut, West Java, which consists of several districts. The area divisions are made base on their area characteristics. People get their clean water supply individually from both dug well and PDAM Kabupaten Garut that consists of several branches and uses spring and river water. Three main districts in Garut City are Kecamatan Garut Kota, Kecamatan Tarogong Kaler, and Kecamatan Tarogong Kidul. Kecamatan Garut Kota is recognized either as trade and service center or resident area with total area of 27,71 kilometer square. Kecamatan Tarogong Kaler and Kecamatan Tarogong Kidul have functions as kabupaten government, travel, and resident area with total area of 55,454 km2. In these three districts, PDAM Kabupaten Garut Cabang Garut Kota fulfills their clean water supply from Jamban Wetan and Jamban Kulon spring water whose production capacity is 170 L/second. According to the record, PDAM has capability to serve water demand until year 2007 in Kecamatan Garut Kota, Kecamatan Tarogong Kaler, and Kecamatan Tarogong Kidul up to 32,49% of 297.215 total citizens. Water demand will increase as citizen and city growth increase. Existing treatment plant will not be able to serve the demand in ???????????????????????????????????? time. Therefore, a plant to complement the demand is needed to be built in the future. This drink water treatment plant is designed for 20 years (2008 - 2028) in two planning steps. Treatment flow is planned about 212 L/second in Step I with equal treatment capacity amount added in Step II so that the total flow treated until end of period is 424 L/second. Cimanuk River is chosen as the raw water source in this drink water treatment plant since its location has closest distance with plant site plan, which is located next to existing plant site, and the quantity can fulfill future water demand. According to laboratory analysis results, some water quality parameters in Cimanuk River have not met water quality standard, that are turbidity, color, iron, manganese, and total coli. Based on those analysis results, treatment units chosen in this plant design are intake, retention basin, pre-chlorination, coagulation, flocculation, sedimentation, filtration, and reservoir. This plant will also be utilized by several supporting buildings which are chemical feeder building, water tower, sludge treatment unit, and office building.