机构地区: 中国科学院生态环境研究中心环境水质学国家重点实验室
出 处: 《环境科学》 2005年第1期127-129,共3页
摘 要: 采用水解酸化 反硝化 硝化的组合工艺对土霉素废水进行实验室规模连续处理 ,水解酸化和反硝化均采用上向流污泥床 ,硝化采用 2个使用不同填料的生物膜反应器 ,稳定运行 70d .当进水COD和NH+ 4 N浓度分别为 2 2 0 0~ 30 0 0mg/L和 4 0 0~ 4 6 0mg/L时 ,该系统在总水力停留时间为 5 6h的条件下 ,稳定实现 80 %以上的COD和TN去除率 .生物处理出水经 4 8mg/L聚合硫酸铁 (以铁计 )处理后COD降至 2 93mg/L ,实现了废水的达标排放 . Successive hydrolysis-denitrification-nitrification process is adopted to treat terramycin wastewater in lab scale for 70 days. Two sludge bed reactors are used respectively for hydrolysis and denitrification, and two biofilm reactors are used for nitrification. When the COD and NH+ 4-N concentrations in influent were 2 200~3 000mg/L and 400~460mg/L, more than 80% COD and TN removals were achieved under a total HRT of 56h. The COD of the effluent was reduced to 293mg/L through coagulation under a polyferric sulfate dose of 48mg/L as Fe.
领 域: [环境科学与工程]