Potential of carbonized rice husk as a filter media rain garden to decrease the turbidity of water and Coli bacteria in the Stormwater Runoff. a review of current research

The rapid development of physical infrastructure and infrastructure activities in several metropolitans in Indonesia, followed by industrial, transportation, construction, trade, and office canters, have had an impact on the environment. Such facilities cause a reduction in a green open space. The existence of high rainfall causes uncontrolled stormwater run-off. As a result of the massive floods that frequently happen. The problem that often found that stormwater run-off tends to result in high turbidity and pollution of Coli bacteria, so processing of the treatment is necessary. One of the methods of maintaining the quality of water can use rain gardens that can be made in a run-off water source, by using carbonized rice husk filters. This research method was carried out with the technique of literature review, such as national and international journals, books, websites, and other documents related to the topic of study. Based on the results of the study, carbonized rice husks were able to decrease turbidity and Coli bacteria with decent removal efficiency approaching 90%. The carbonized rice husk becomes an alternative for the media filter rain garden to decrease the value of turbidity and the number of Coli bacteria, as it has large pores and has a content of high Silica (Si).