摘要
运用物理、化学及生物法对罗氏沼虾育苗废水进行处理。结果表明:育苗废水经物理法(沉淀、过滤)处理后,水质状况得到改善。浑浊度平均下降68.1%,NH3-Nt、CODMn平均下降24.2%与14.4%;细菌总数、弧菌数下降68.6%和75.4%。24 h后二氧化氯3.0 mg/L为最佳消毒浓度;24 h后溴氯海因3.0 mg/L为最佳消毒浓度;48 h后百杀迪1.5mg/L为最佳消毒浓度。废水经臭氧消毒14h后对细菌的杀灭率达到92.7%,对弧菌的杀灭率在5 h的时候便达到了100%,氧化还原电位提高了约18.6%。消毒剂净化废水的能力依次为臭氧>百杀迪>溴氯海因>二氧化氯。到一定时间当生物膜成熟后,生物滤器对水质净化有良好的效果,系统可较好保持NH3-Nt低值,而保持NO2--N低值不易。
Physical, chemical and biological methods were used to treat the breeding （Macrobrachium rosenbergii ） wastewater. The result showed： NTU average decreased 68.1% ; NH3-Nt, CODMn reduced 24.2% and 14.4% averagely. Total humber of bacteria and vibrio decreased 68.6% and 75.4%. ClO2 with 3.0mg/L, C5H6BrClN2O2 with 3.0 mg/L was the best germicidal concentrations after 24 h and Bacid with 1.5 mg/L was the best after 48 h. After working 14 h, the quality of wastewater treated by ozone got the best effect. The germicidal rate of bacteria reached 92.7% and of vibrio 100% after 5 h. The level of ability of different disinfectants purifying wastewater was ozone 〉 Bacid 〉 C5H6BrClN2O2 〉 ClO2. When the biological membrane matured, the biological filter had a good effect on treating wastewater. The system could keep NH3-Nt low but it was not easy to keep NO2^--N low.
出处
《上海水产大学学报》
CAS
CSCD
北大核心
2006年第3期359-364,共6页
Journal of Shanghai Fisheries University
基金
上海市科技兴农重点攻关项目(农科攻字2001第5-5号)
关键词
育苗废水
处理
消毒剂
臭氧
breeding wastewater
treatment
disinfectant
ozone
