Open AccessThe effectiveness of increasing the amount of Return Activated Sludge (RAS) in wastewater with a combination biofilter system on bulking parameters
Author(s) -
I. A. Mursalim,
Muhammad Saleh Pallu,
Mary Selintung,
Irwan Ridwan Rahim
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/841/1/012026
Subject(s) - biofilter , mixed liquor suspended solids , activated sludge , effluent , wastewater , aeration , pulp and paper industry , sludge bulking , waste management , sewage treatment , environmental science , environmental engineering , engineering
Control of industrial wastewater treatment is very important to produce good effluent. Secondary processing is the heart of wastewater treatment. The problem that often occurs in secondary processing using activated sludge is bulking in the mixed liquor. Various studies on bulking have been done. The optimal aeration time is 3 hours to remove bulking in the mixed liquor caused by S.Natans bacteria. This research aims to determine the effectiveness of the addition of the amount of Return Activated Sludge (RAS) in wastewater with a combination biofilter system on bulking parameters. The method used is experimental in the laboratory. The research design used a completely randomized design. The variation of the test that will be carried out is the addition of the Return Activated sludge variation test to determine the effectiveness of adding RAS to wastewater with a biofilter combination system on bulking parameters. The experiment was repeated 3 times, resulting in 27 treatments. To test bulking, it is tested using the parameters SVI (Sludge Volume Index), DO, MLSS (Mixed Liquor Suspended Solid), and BOD. The results showed that the addition of Return Activated Sludge in wastewater was very effective in a combination biofilter system against bulking parameters.