摘要
采用MBR工艺对高盐度废水处理的影响因素进行研究。试验条件如下：污水中海水比例为50%,COD为700-800 mg/L,氨氮为80-100 mg/L,HRT为12 h,污泥浓度为7-8 g/L。试验结果表明：在高盐度条件下,采用低溶解氧（DO为1-2 mg/L）,COD和氨氮的平均去除率可分别达到91.91%和91.44%;但氨氮负荷提高到0.4 kg/（m^3·d）左右时,其平均去除率仅为62.47%。通过降低DO浓度和提高进水氨氮浓度可以使亚硝化率达到50%以上,但不能保持稳定的亚硝酸盐积累。
The experimental study is about the influence factor of the treatment of wastewater containing high salt by MBR process. The test conditions are as below： wastewater containing 50% seawater, COD was 700 -800 mg/L, NH3 -N was 80 - 100 mg/L, HRT was 12 h, MISS was 7 - 8 g/L. The result showed that the average removal efficiency of COD and NH3-N was 91.91% and 91.44% respectively when the DO was 1 - 2 mg/L in the salty condition. But when the loading of NH3-N was increased to 0.4 kg/（m^3·d）, the average removal efficiency of ammonia was just 62.47 % . The rate of nitrosation could exceed 50 % by reducing the concentration of DO and increasing the NH3-N concentration of the influent, but this way could not keep a steady rate of nitrite accumulation.
出处
《环境工程》
CAS
CSCD
北大核心
2009年第5期22-24,共3页
Environmental Engineering
基金
国家自然科学基金(50678085)
山东省教育科技计划项目(J06I03)
山东省研究生教育创新计划资助项目(SDYY07091)
关键词
高盐废水
MBR工艺
COD及氨氮去除率
亚硝化率
wastewater containing high salt
MBR process
the removal efficiency of COD and NH_3-N
rate of nitrosation
