Difference of Microorganisms Found in an Aerated submerged Biofilm Reactor with Different Plastic Media Terating Phenol Wastewater

페놀폐수를 처리하는 침적형 생물막 반응기에서 매질에 따른 미생물상의 차이

  • 정재춘 (연세대학교 환경과학과) ;
  • 차병훈 (경기대학교 환경공학과)
  • Published : 1995.08.01

Abstract

Net type polyvinylidene chloride (PVDC) media and cillium type polyethlene polypropylene (PEPP) media were installed in the aereted submerged biofilm reactors. Synthetic phenol wastewater for feed were made to contain 1,480 mg of phenol per liter of water. The organic loading range of reactors were 0.439-0.456 kg COD/m$_{3}$, 0.882 - 0.919 kg COD/m$_{3}$ and 1.199-1.339 kg COD/m$_{3}$. Comparing PVDC to PEPP media, the bacterial number found in biofilm on PEPP were slightly higher. With the low temperature (10$\circ$C), the number of bacteria was some what deceered. Number of bacterial strains identified from PVDC were 23 and those from PEPP were 42. Genera identified in the PVDC media were Flavobacterium (47.8%), Unidentified (17.6%), Pseudomonas (13.0%), Micrococcus (8.7%) and Beggratoa (8.7%). Genera identified in the PEPP media reactor were Pseudomonas (35.7%), Alcaligenes (19.0%), Aeromonas (14.33%) and Micrococcus (11.9%), In the steady, state, a filamentous bacteria, type 1701 was identified in all of the reactors. Paramecium sp. and fungi were present in the PVDC media reactor. While, Difflugia sp, Paramecium sp. and fungi were found in the PEPP media reactor. The low diversity of protozoa was ascribed to high concentration of phenol.

Keywords

Aerated submerged biofilm reactor;bacteria;protozoa

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