Pollution Research Paper

A STUDY TOWARDS THE REALIZATION OF GREEN TECHNOLOGYIN URBAN WATER SUPPLY SECTOR WITH LIFE CYCLEASSESSMENT (LCA) METHOD AND FAULT TREE ANALYSIS (FTA) METHOD

NIEKE KARNANINGROEM, MAS AGUS MARDYANTO, GEODITA WORO BRAMANTI AND DESY RISQI ANGGRAENI

Abstract

Water Treatment Plant (WTP) with conventional systems use pumps that work for 24 hours, andchemicals which produce residues or by products in water processing and have an impact on the environment and humans. This study aims to identify the quality and performance of the WTP treatment, Identify the impacts arising from the drinking water treatment process and determine the efforts made to reduce the impacts identified by the method Life Cycle Assessment (LCA). The Life Cycle Assessment (LCA) method is an assessment method regarding potential environmental impacts and evaluation of the environmental performance of a process to the product. Life Cycle Assessment (LCA) consists of four stages, consist of determinations Goal and Scope, Life Cycle Inventory, Life Cycle Impact Assessment, data interpretation. The software used in Sima Pro 9.0.0with the impact assessment method is CML-IA Baseline. The impacts discussed in this research are Global Warming, Human Toxicity, and Eutrophication. The way to reduce the impact based on literature studies. The results of the analysis found that the quality of raw water has not reach the quality standards as drinking water standards. While the quality of produced water has reach the quality standard. The performance of the processing unit at WTP has not worked well, need improvement with the addition of polymer in clearator, electricity usage in WTP is11.220.195,47kWh/year. The analysis results using Life Cycle Assessment (LCA) method, showed that the highest contribution to environmental impact was Eutrophication of 287.644,1 kg PO4—eq/year followed by Global Warming of 23.697.275 kg CO2eq/year, and Human Toxicity of 9.190.241 kg1,4-DBeq/year. The way to reduce the impact is take pretreatment on raw water, planning and build sludge treatment, also recycle sludge from clearator unit, replace equipment, replace aluminum sulfate, and liquid chlorine into PAC and hypochlorite salts.