Analysis of effectiveness aeration time with biofilter and ras combination systems on bulking parameters

Abstract

Abstract One of the environmental pollution of the waters is caused by the disposal of industrial liquid waste that has not been treated properly. The solution to overcome this problem is controlling the processing of industrial wastewater to produce a good effluent, secondary treatment is the heart of wastewater treatment. The problem that often occurs is bulking. Various research books have been done. One of the previous studies by Aryani M.I (2004))[1]. The optimal aeration time is 3 hours to eliminate bulking of mixed liquor caused by S.Natans bacteria. This research is a continuation of research and aims to analyze the effectiveness of aeration time with a combination of biofilter systems and variations of Return Activated Sludge (RAS) against the bulking parameters. The method used is an experimental method in the laboratory. The research design uses a completely randomized design. The test that will be carried out is a time test for giving aeration to find out the optimal time in handling bulking with a combination of biofilter systems and variations in the Return Activated Sludge (RAS) against the bulking parameters namely SVI (Sludge Volume Index), DO, MLSS (Mixed Liquor Suspended Solid), BOD, pH & Temperature. The expected result is optimal time effectiveness with a combination of biofilter systems and Return Activated Sludge variations on bulking parameters to handle bulking.

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