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유동상 생물반응기에 의한 난분해성물질이 포함된 염색-제지 혼합폐수처리
김홍록,장일헌,서유덕,박영규 嶺南大學校 環境問題硏究所 1993 環境硏究 Vol.13 No.1
환경관리공단 대구사업소 폐수종말처리장으로 유입되는 염색-제지 혼합폐수를 대상으로 유동상 생물반응기로 담체충진율을 10%와 20%로 변화시키면서 처리한 결과, 담체충진율을 10%로 하여 BOD용적부하 1.52∼6.4㎏ BOD/㎥·day, COD용적부하 1.40∼4.81kg ??/㎥·day로 처리할 때 유출수의 평균 BOD는 216㎎/ℓ, 평균 ?? 농도는 241㎎/ℓ이었으며, BOD 및 ??의 평균제거율은 각각 73%, 65% 이었다. 담체를 20% 충진하여 BOD용적부하 1.8∼5.81㎏ BOD/㎥·day, COD용적부하 1.5∼4.85㎏ ??/㎥·day로 처리할 때 유출수의 평균BOD는 188㎎/ℓ, 평균 ?? 농도는 223㎎/ℓ이었으며, BOD 및 ??의 평균제거율은 각각 79%, 69%로 담체중진율 20%가 다소 높게 나타났다. 담체를 10% 충진한 경우 Y, ??는 각각 0.28(㎏ MLVSS/㎏ BOD)와 0.05(??)이었으며, 담체를 20% 충진한 경우의 Y, ?? 값은 0.30(㎏ MLVSS/㎏ BOD) 와 0.08(??)이었다. This study was performed to investigate the biological treatability and to determine the biokinetic coefficient by Fluidized Bio-reactor using 10% media and 20% media for dyeing and paper manufacture mixing wastewater of Taegu Namchun Sewage Treatment Plants. The dyeing and paper manufacture mixing wastewater contained BOD 601∼1.194mg/l and ??424∼812mg/ℓ was treated by Fluidized Bio-reactor. The conclusions are as follow : The 73% of BOD and 65% ?? were removed by Fluidized Bio-reactor using 10% media with the loading range of 0.5∼1.52kg BOD/kg MLVSS·day and 0.53∼1.24kg ??/kg MLVSS·day. The 79% of BOD and 69% ?? were removed by Fluidized Bio-reactor using 20% media with the loading range of 0.32∼0.8㎏ BOD/㎏MLVSS·day and 0.28∼0.66㎏ ??/㎏ MLVSS·day. The biomass yield coefficient(Y) and microbial decay coefficient(??) were shown as 0.28kg MLVSS/kg BOD and 0.05 ?? in using 10% media, and 0.30kg MLVSS/kg BOD and 0.08 ?? in using 20% media, respectively.