Abstract: Dynamic membrane bioreactor (DMBR) and membrane bioreactor (MBR) were used to treat aquaculture wastewater. The results showed that the CODMn removal rates by DMBR and MBR for treating aquaculture wastewater achieved above 95%. TN removal rates by DMBR and MBR were 71.4%，75.8%，when DO was 0—1 mg/L. When DO was 2—3 mg/L，TN removal rates by DMBR and MBR were 46.3% and 44.1% respectively. DMBR and MBR had high contaminant removal efficiencies. Trans-membrane pressure (TMP) of MBR was much higher than the TMP of DMBR. The operation time of MBR was 5 days when the DO was 0—1 mg/L. The effluent of DMBR depended on gravity，therefore the TMP was 3.97 kPa，and the operation time of DMBR could reach about 10 days. The results showed DMBR can effectively overcome some defects of MBR，such as high membrane cost and fouling.

Key words: dynamic membrane bioreactor, membrane bioreactor, aquaculture wastewater, dissolve oxygen（DO）

摘要： 采用动态膜生物反应器（dynamic membrane bioreactor，DMBR）和膜生物反应器（membrane bioreactor，MBR）两种处理工艺，研究在相同条件下对养殖废水的处理效果和运行条件。结果表明，不同溶解氧（dissolve oxygen，DO）条件下，DMBR和MBR对CODMn的去除率可达95%以上。DO为0～1 mg/L条件下，DMBR和MBR的总氮平均去除率分别达到71.4%、75.8%；在DO为2～3 mg/L条件下，DMBR和MBR的总氮平均去除率分别为46.3%、44.1%。DMBR和MBR两种工艺均能达到较好的污染物去除效果。MBR的过滤压差明显高于DMBR，低DO条件下（0～1 mg/L）的运行周期约为5天，DMBR采用重力流出水，运行周期约为10天，过滤压差最高时仅为3.97 kPa，在一定程度上克服MBR成本高、易污染等缺点。

关键词: 动态膜生物反应器, 膜生物反应器, 养殖废水, 溶解氧