Laundry activities grow rapidly in Indonesia in the recent year, remaining the problem of environmental pollution because of the use of detergent. The purpose of the current study was to investigate the ability of sludge of drinking water treatment plant (DWTP) as adsorbent combined with phytoremediation system to remove chemical oxygen demand (COD), phosphate and surfactant in laundry wastewater. Batch and continuous blow studies were conducted on different variables such as adsorbent mass, contact time, and type of plant for phytoremediation system. The results of the current study show that adsorption combined phytoremediation system could remove COD, phosphate, and surfactant up to 77.5%, 54.3%, and 99.9%, respectively. Based on the results, it means that the adsorption combined phytoremediation system could be considered as an appropriate environmental technology for laundry wastewater treatment in the near future.
Most of the wastewater produced comes from household activities. Household wastewater currently tends to be directly disposed into water bodies without prior treatment. As a result, the concentration of pollutants, especially TSS and COD in the waters became high. It is necessary to manage household wastewater, so that the disposed waste is still within safe limits that do not pollute the environment. Filtration is one of treatment methods which is generally used in the processing of clean water, but the materials used in the filtration process also have the ability to reduce pollutant levels in wastewater. This study aims to find out that filtration can be used as a method of household wastewater treatment. The method in this study is to conduct a trial using a simple filtration method to analyse the decrease in household waste levels. The result shows that the percentage of TSS and COD removal are 79.01% and 77.84%. The conclusion in this study is that filtration can be used as a method of household wastewater treatment because the material used can reduce the concentration of TSS and COD to below the specified quality standard.
Jakarta, capital city of Indonesia, has a population of 9.5 million inhabitants, population that increases significantly during working hours. Jakarta suffers a deficit of clean water supply due to limited raw water availability delivered from Jatiluhur dam, located 70 km away, and the deteriorating water quality of Jakarta's rivers. PALYJA, operator of water services of West Jakarta, manages three WTP producing 75% of distributed water (6 m3/s) and purchasing bulk treated water to complete the supply (2 m3/s). In Cilandak, a 400 l/s WTP fed by the increasingly polluted Krukut River, PALYJA opted by Riverbank Filtration (RBF) as a solution in order to improve raw water quality and quantity reducing the impact of dry season trough aquifer storage. RBF is a cost-effective, natural treatment technology that takes advantage of geological and biological natural filtration, instead of chemicals use, to obtain surface water and groundwater supplies.
By mid 2010, the project started with the study and pumping test in two new pilot wells, confirming very good quality and quantity of the leakage from Krukut River. The project is ongoing, drilling and equipping 10 wells to obtain 150 l/s additional water for Cilandak WTP by the 2nd semester of 2011.
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