Enhanced rooftop rainwater harvesting quality through filtration using zeolite and activated carbon

Abstract

This study aimed to investigate the quality of the rooftop rainwater harvesting (RRWH) and to treat it for clean water supply alternative of Graha Rektorat building at State University of Malang, Indonesia. Different combinations of zeolite and activated carbon were used as filter media to treat the RRWH. Several parameters have tested to investigate the quality of RRWH based on Permenkes RI No. 416 / MENKES / PER / IX / 1990. Most of the quality of the RRWH met clean water and drinking water standard. However, there were three parameters have to be reduced and required further treatment. The results showed T4 reduced TDS and coliform bacteria by 37% and 36%, while T5 eliminated organic substances (KMnO4) for 35%.

Study of Rainwater Harvesting Implementation

“…Yulistyorini found that a combination of zeolite and activated carbon results in a 37% reduction in TDS and a 36% reduction of coliform, while pure zeolite only reduces KMnO4 by 35%. (Yulistyorini et al, 2018) Research by Shaheed tried to implement an adsorption-filtration system for rainwater that have high levels of NH 3 -N and E.coli. As a result, both parameter concentration was able to meet the clean water standard but not the drinking water standard.…”