Rekayasa proses koagulasi-flokulasi untuk pengolahan air sungai di Desa Lok Baintan Kabupaten Banjar

Abstract

Based on observations in Lok Baintan Village the activities of community in terms of MCK still exist. Efforts to achieve safe access to drinking water may not be fully serviced by the PDAM, it is necessary to encourage marginalized communities to be able to provide water independently. The limitations of clean water require appropriate processing technology adapted to the circumstances. The aim of the research was to test the engineering ability of the coagulationflocculation process for river water treatment in the Desa Lok Baintan, Kabupaten Banjar. This type of research is experimental, that is testing the engineering of the coagulation-flocculation process for river water treatment using the method of stirring circular pipe hydraulics and silica-GAC media. The results obtained were that the quality of water for pH before processing averaged 7.04 to 7.80 and turbidity before processing averaged 34.88 NTU to 18.20 NTU (efficiency 47.82%). The results of turbidity measurements on backwash used water were used as clues to determine the saturation level of silica-GAC sieve in turbidity repetition 378 NTU turbidity (td 60 minutes), repetition II turbidity 387 NTU (td 120 minutes), and III repetition very high turbidity 605 NTU (td 180 minutes). Processing efficiency in terms of turbidity in repetition I 44.51%, repetition II 51.77%, and repetition III 46.58% meet the requirements of clean water standards. Considering that the results of continuous trials have not met the requirements of drinking water standards, it is necessary to improve so that they can be widely useful.