침지형 막분리 공정의 막오염 요인 연구 (2)Fouling Factors in Submerged Membrane Bioreactor (Ⅱ)

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 370
  • Download : 0
Fouling characteristics were studied in the continuous operation of pilot-scale submerged membrane bioreactor (SMBR) for 120days. The ratio of flux decline (J/Jo) varied with suction pressure and backwash cycle. Fouling decreased significantly while flux increased when the reactor operated on suction at 300㎜Hg for 5 minutes followed by backwash for 1 minute. Fouling was affected by MLSS and SS in the influent seriously. In particular, influent SS such as cellulose material, hair and red pepper powder caused most of resistance in the beginning of operation, attaching the surface of membrane and blocking the pores. Therefore, pretreatment was required to remove SS. It was observed that SMBR was stable to high and shock loadings, as the removal efficiencies of COD and SS were maintained 97% and 100% when influent characteristics changed irregularly. Because the cake resistance caused by ECP was the major resistances caused by MLSS and resistance varied with the ratio of protein and carbohydrate even in constant ECP from previous study, total ECP and the ratio of ECPp to ECPc must be monitored to keep the flux stably in SMBR.
Publisher
한국물환경학회
Issue Date
1999-01
Language
Korean
Citation

수질보전 한국물환경학회지, v.15, no.3, pp.421 - 428

ISSN
1229-4144
URI
http://hdl.handle.net/10203/75066
Appears in Collection
CE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0