摘要
采用生物接触氧化技术预处理微污染原水 ,并和水厂常规处理工艺进行了对比。中试结果表明 ,原水浊度为 50～ 2 0 0NTU、氨氮浓度为 1～ 10mg/L、水温为 18～ 30℃时 ,生化池对氨氮的去除率为 6 0 %～ 80 % ,CODMn去除率为 0 .5%～ 2 5% ,UV2 54 的去除率为 1%～ 15% ;正常运行时 ,较高浊度 (2 0 0～ 80 0NTU)的冲击不会明显影响生化池对氨氮和CODMn的去除 ;生化池的亚硝酸盐氮去除率为 2 0 %～ 50 % ,在原水氨氮浓度较高时亚硝酸盐氮积累增多 ;增加生物接触氧化预处理工艺 。
Experimental research on pretreatment of polluted raw water with higher turbidity and higher ammonia-N concentration by biological contact oxidation process (BCOP) with elastic packing was conducted and compared with conventional water treatment process. Experimental results showed that removal rates of ammonia-N, COD Mn , and UV 254 were 60%～80%, 0.5%～25%, and 1%～15% respectively at raw water turbidity of 50～200 NTU, ammonia-N concentration of 1～10 mg/L and temperature of 18～30 ℃. During the test, higher turbidity (from 200 NTU to 800 NTU) of raw water had no significant effect on removal efficiency of ammonia-N and COD Mn . Nitrite removal rate was 20%～50%, but nitrite accumulation took place when ammonia-N concentration was rather high. With the BCOP, pollutants removal effects of subsequent sedimentation tank and rapid sand filter could be improved.
出处
《中国给水排水》
EI
CAS
CSCD
北大核心
2000年第12期6-9,共4页
China Water & Wastewater
关键词
微污染原水
预处理
生物接触氧化
micro-polluted source water
pretreatment
biological contact oxidation
