Premium
Effect of pore size of monofilament woven filter cloth as supporting material for dynamic membrane filtration on performance using aerobic membrane bioreactor technology
Author(s) -
Mahat Siti BaizuraBinti,
Omar Rozita,
Lee Jing Ling,
Mohd Idris Aida Isma,
Che Man Hasfalina,
Mustapa Kamal Siti Mazlina,
Idris Azni
Publication year - 2020
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.2453
Subject(s) - filtration (mathematics) , turbidity , wastewater , membrane , chemical oxygen demand , materials science , membrane bioreactor , chemical engineering , filter (signal processing) , pulp and paper industry , polypropylene , composite material , chemistry , environmental engineering , environmental science , mathematics , biochemistry , statistics , oceanography , computer science , engineering , computer vision , geology
Dynamic membranes (DMs) defined as cake layer forms on a support material such as filter cloth have been of great interest in recent years. The usage of DMs can reduce the capital cost significantly and energy consumption during wastewater treatment by replacing the conventional membrane. The formation of an active dynamic cake layer is highly related to the retention of particles on the support material surface. In this study, different pore sizes of monofilament woven filter cloth made of polypropylene (PP; 20, 40, and 60 μm) were installed as a flat sheet in a DM bioreactor (DMBR) to treat high strength food wastewater [>1,000 mg/L chemical oxygen demand (COD)]. The wastewater treatment performances, namely COD, turbidity, total solid separation, and total ammonia nitrogen removal efficiencies, were assessed daily. The system achieved average COD removals higher than 80% and 70% for smaller pore size and larger pore size, respectively. Based on the results (duration of 4 days), the 20 μm pore size monofilament filter cloth was found most suitable for the cake layer development. The results also demonstrate that the biofilm composed of the cake layer of the DM on smaller pore size significantly concurs with the high treatment efficiency compared with the larger pore size.