#TITLE_ALTERNATIVE#

• Main Author: EKA DIYANTI (NIM : 15308010), IMANIA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/28006
• Institution: Institut Teknologi Bandung

<p align="justify">Water pollution has become more severe and critical with rapid urbanization and lack of adequate sanitation. One of the major contributor to groundwater pollution is septik tank that widely applied as decentralized wastewater treatment system in community scale, but this system tends to require a more eco-friendly, efficient, and economical secondary treatment for problematic areas with low soil permeability and high groundwater level. In this research, ITB West CC building’s septic tank will be used as the source of influent to be treated in (1x1x1.2)m3 fixed bed biofilter reactor, coco peat—by-product generated from coconut processing industries—will be used as the major media, and intermittent dosing system of 2 minutes flushing time every hour will be applied. Coco peat was chosen because of its abundance in Indonesia and its cheapness. This study aims to investigate the biofilter’s performance in setting aside the key pollutant of septic tank effluent during the test period of 3 months, as well as the feasibility of its treated flow to be considered as reclaimed water. The removal efficiencies obtained are 83.22% for COD, 86.46% for BOD, 79.81% for TOC, 83.16% for TSS, 74.46% for ammonia, and 98.2% for total coliform. The effluent of biofilter could meet domestic water quality standards, but it is not worth expressed as class IV water based on PP 82/2001 in terms of BOD and coliform. The watering hose variation of every 15 minutes gave the best coliform removal by 99.34% than variation of 30 and 60 minutes.<p align="justify">