CAJ | 학술논문

为了研究高效脱色菌在缺氧-好氧牛物滤池(A/O biofilter)中对偶氮染料的降解特件,以活性红KN-3B(C.I.reactive red 180)为降解对象,缺氧牛物滤池以火山碎石为填料,接种高效脱色菌CK3柯氏柠檬酸杆菌启动,好氧生物滤池以牡蛎壳为填料,接种污水处理厂活性污泥启动.试验考察了不同工况下缺氧一好氧生物滤池对色度和COD的去除效果,结果表明:生物滤池中微牛物对偶氮染料活性红KN-3B的脱色和对COD降解的最适pH条件为弱酸性;缺氧滤池中高效菌对色度的去除需要外加碳源,且增加外加碳源有助于脱色率的提高;该高效菌为耐盐菌,当进水NaCI浓度达30 g/L时,色度去除率仍可达93%以上;当染料负荷达500 mg/L时,脱色率仍可达95%.通过紫外一町见扫描图谱分析初步推断CK-3柯氏柠檬酸杆菌对偶氮染料活性红KN-3B的脱色主要是生物降解作用.
위료연구고효탈색균재결양-호양우물려지(A/O biofilter)중대우담염료적강해특건,이활성홍KN-3B(C.I.reactive red 180)위강해대상,결양우물려지이화산쇄석위전료,접충고효탈색균CK3가씨저몽산간균계동,호양생물려지이모려각위전료,접충오수처리엄활성오니계동.시험고찰료불동공황하결양일호양생물려지대색도화COD적거제효과,결과표명:생물려지중미우물대우담염료활성홍KN-3B적탈색화대COD강해적최괄pH조건위약산성;결양려지중고효균대색도적거제수요외가탄원,차증가외가탄원유조우탈색솔적제고;해고효균위내염균,당진수NaCI농도체30 g/L시,색도거제솔잉가체93%이상;당염료부하체500 mg/L시,탈색솔잉가체95%.통과자외일정견소묘도보분석초보추단CK-3가씨저몽산간균대우담염료활성홍KN-3B적탈색주요시생물강해작용.
The decolorization and degradation of azo dye reactive red KN-3B (C. I. reactive red 180) in an anoxic-aerobic biofilter( A/O biofiher) was studied in this research. The anoxic biofilter packing with volcano detritus was incubated with high effective decoloring strain Citrobacter sp. CK3. The aerobic biofiher packing with shells was incubated with activated sludge taken from a domestic wastewater treatment plant. The optimum operation conditions for color removal was determined,results show that the optimum pH for the degradation of azo dye reactive red KN-3B and organic matter is weakly acidic; nevertheless,the degradation performance is still good under alkaline condition; the strain can not decolorize reactive red KN-3B without external carbon source; furthermore,decolorization efficiency is improved when the carbon source concentration is increasing;the strain is salt-tolerate,decolorization efficiency is still more than 93%,when initial NaCI concentration rea-ches to 30 g/L; decolorization efficiency can still be 95%,when the initial dye concentration reaches to 500 mg/L. The result based on UV-Vis analyses to dye wastewater before and after decolorizing reaction suggests that reactive red KN-3B may be removed mainly due to the biodegradation.