Characteristics of Wastewater Treatment by the Continuous-Flow Fixed Biofilm Process Using Porous Fly Ash Carrier

다공성 석탄회 담체를 이용한 연속류식 고정 생물막 공정의 폐수 처리 특성

  • Ryu, Jae-Chun (Department of Fine Chemicals Engineering & Chemistry, Chungnam National University) ;
  • Kim, Young-Ho (Department of Fine Chemicals Engineering & Chemistry, Chungnam National University) ;
  • Yang, Hyun-Soo (Department of Fine Chemicals Engineering & Chemistry, Chungnam National University) ;
  • Kwak, Doo-Won (BioShield Co. Ltd.) ;
  • Yoo, Sung-Joon (BioShield Co. Ltd.)
  • Received : 2004.07.20
  • Accepted : 2004.12.02
  • Published : 2005.04.10

Abstract

We have prepared the porous carrier that has high capacity for immobilization of microorganisms and adsorption capacity for cation using fly ash in the previous work. In this study, we investigated the characteristics of piggery wastewater treatment in comparison with commercial carrier and conventional activated sludge process by continuous-flow fixed biofilm process in laboratory scale at the same experimental conditions to develop the biofilm process using porous fly ash carrier for wastewater treatment. As a result, the prepared fly ash carrier showed that removal efficiency of COD, TN and $NH_4{^+}-N$ items were 80%, 77% and 65%, respectively, which were higher efficiency than the commercial carrier and conventional activated sludge process. And the result of measurement for immobilized microorganisms after treatment showed higher capacity than the commercial carrier, and it was confirmed by SEM observation on fly ash carrier that the colony of microorganisms was stably formed.

우리는 이전의 연구에서 석탄회를 이용하여 높은 미생물 담지능과 양이온에 대한 흡착능을 가지는 다공성 담체를 제조하였다. 본 연구는 다공성 석탄회 담체를 사용한 폐수 처리 생물막 공정 개발을 목적으로 실험실 규모의 연속류식 고정층 생물막 공정에 의한 돈사 폐수 처리 특성을 상용 미생물 담체 및 기존의 활성슬러지법과 동일 조건에서 비교 고찰하여 보았다. 실험 결과로서 제조한 석탄회 담체는 COD, TN, $NH_4{^+}-N$ 항목의 평균 제거율이 각각 80%, 77%, 65%로서 상용 담체 및 기존의 활성 슬러지 공정과 비교하여 높은 제거율을 나타내었다. 처리 후 미생물 담지량을 측정해 본 결과 상용 담체에 비해 높은 값을 나타내었으며, SEM 관찰 결과 석탄회 담체에 미생물 군집이 안정하게 형성되었음을 확인할 수 있었다.

Keywords

Acknowledgement

Supported by : 환경부, (주)바이오쉴드

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