作　　者： ; ; ; ;

机构地区： 华南理工大学环境科学与工程学院

出　　处： 《水处理技术》 2011年第6期82-85,共4页

摘　　要： 以经过臭氧氧化消毒→机械过滤→生物过滤的养鱼废水为原水,研究了生物活性炭对水产养殖废水中氨氮、亚硝态氮和COD深度处理的效果,并与活性炭吸附处理进行了对比研究。结果表明,在滤速14 m.h-1、进水水温23.3～30.3℃、pH为7.35～8.06、溶解氧质量浓度为6.0～8.1 mg.L-1、氨氮质量浓度0.204～0.984 mg.L-1、亚硝态氮质量浓度0.090～1.003 mg.L-1、COD为13.44～26.80 mg.L-1的条件下,生物活性炭对氨氮、亚硝酸盐氮和COD的平均去除率分别达到85.5%、90.1%和43.8%。经生物活性炭处理后,出水氨氮和亚硝态氮浓度均达到了花鳗养殖对水质的要求,达标率分别为100%和97.6%,可以循环回用;在滤速14 m.h-1,低进水氨氮、亚硝态氮浓度下,活性炭吸附对氨氮和亚硝酸盐氮几乎没有去除作用,但对COD的吸附去除率高达52.3%。 In this paper,wastewater collected from circulating aquaculture,treated by ozone oxidation disinfection,mechanical filter and bio-filter,was taken as influents,the tertiary treatment of NH4＋-N,NO2——N and COD in influents by biological activated carbon（BAC） was studied.The active carbon adsorption processing was also investigated.The results showed that under the condition of the filtration rate of 14 m·h-1,water temperature of 23.3-30.3 ℃,and the pH of 7.35～8.06,the initial concentrations of NH4＋-N,NO2——N,COD and DO in the influents of 0.204～0.984 mg·L-1,0.090～1.003 mg·L-1,13.44～26.80 mg·L-1 and 6.0～8.1 mg·L-1 respectively,the mean removal rates of NH4＋-N,NO2——N and COD by BAC were 85.5%,90.1% and 43.8% respectively.The concentrations of NH4＋-N and NO2——N in the effluents were suit for the eel to live,the standards rate were 100% and 97.6% respectively.Under the condition of iltration rate of 14 m·h-1,low initial concentrations of NH4＋-N,NO2——N,active carbon adsorption processing had few effects on the treatment of NH4＋-N and NO2——N,but the removal rates of COD by active carbon adsorption was 52.3%.

关 键 词： 生物活性炭 水产养殖废水 氨氮 亚硝酸盐氮

领　　域： [环境科学与工程]