Lee, Jung-Yeol Choi, Bo-Kyung Ahn, Kyu-Hong Maeng, Sung Kyu Song, Kyung-Guen 2024-01-20T14:00:42Z 2024-01-20T14:00:42Z 2021-09-05 2012-10 1615-7591 https://pubs.kist.re.kr/handle/201004/128796 Non-woven fabric filter- (NWFF) and microfilter-MBR modules were made using 100 mu m polypropylene and 0.25 mu m polyethylene materials, respectively. The performances and mechanisms of the two processes were investigated, including additional batch filtration tests to find the function of the dynamic gel layer on the membrane surface. The HRT of both MBRs was 9 h and the operating permeate flux was 13 L/m(2)/h. The two MBRs consisted of an anoxic and aerobic reactor. The NWFF or microfilter (MF) was submerged in each of the aerobic reactors. The two MBRs showed similar performances for the removal of organic matters, suspended solids and nitrogen. Cake formation on the NWFF contributed to major resistance, while the gel layer on the microfilter or internal fouling of the pores played a key role in the fouling of the membrane surface. The amount of soluble extracellular polymer substances (EPS) (13 mg/L) of the attached sludge on the NWFF surface was larger than that (11 mg/L) of that suspended sludge. Consequently, the functional gel layer for the coarse and microfilter is established based on the relationship among the EPS, transmembrane pressure and MLSS. English SPRINGER FORMING DYNAMIC MEMBRANE FILTRATION CHARACTERISTICS SUBMERGED MEMBRANE BIOREACTOR PERFORMANCE MESH Characteristics of flux and gel layer on microfilter and non-woven fabric filter surface based on anoxic-aerobic MBRs Article 10.1007/s00449-012-0727-z 1 BIOPROCESS AND BIOSYSTEMS ENGINEERING, v.35, no.8, pp.1389 - 1398 BIOPROCESS AND BIOSYSTEMS ENGINEERING 35 8 1389 1398 scie scopus 000308245200015 2-s2.0-84870334958 Biotechnology & Applied Microbiology Engineering, Chemical Biotechnology & Applied Microbiology Engineering Article FORMING DYNAMIC MEMBRANE FILTRATION CHARACTERISTICS SUBMERGED MEMBRANE BIOREACTOR PERFORMANCE MESH Dynamic gel layer Membrane bioreactor Membrane fouling Microfilter Non-woven fabric filter