Xu Rongle, Zhang Qing, Tong Juan, Wei Yuansong, Fan Yaobo
a Research Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 100085 , People's Republic of China.
Environ Technol. 2015 Mar-Apr;36(5-8):827-36. doi: 10.1080/09593330.2014.963694. Epub 2014 Oct 9.
To improve the nutrient removal, the feasibility was studied for the organics released from sludge pretreated by microwave-H2O2 process (MHP) to be used as internal carbon source in two A2/O-membrane bioreactors (MBRs). The experiments were conducted for the nutrient removal and the membrane fouling. The results showed that the removal efficiencies of TN and TP were improved by 11% and 28.34%, respectively, as C/N ratio was adjusted to 8 by adding the internal carbon source, and the ratio of soluble chemical oxygen demand (sCOD) consumed easily for denitrification was about 46% of the total sCOD in the internal carbon source. The addition of the internal carbon sources did not lead to severe membrane fouling in the experimental A2/O-MBR. It is implied that the organics released from sludge pretreated by MHP could be used as the internal carbon source to enhance the nutrient removal in A2/O-MBRs.
为提高营养物去除效果，研究了微波-H2O2 工艺（MHP）预处理污泥释放的有机物用作两个 A2/O 膜生物反应器（MBR）内碳源的可行性。进行了营养物去除和膜污染实验。结果表明，通过添加内碳源将 C/N 比调整为 8 时，TN 和 TP 的去除效率分别提高了 11%和 28.34%，内碳源中易于用于反硝化的可溶性化学需氧量（sCOD）消耗比例约占总 sCOD 的 46%。添加内碳源未导致实验 A2/O-MBR 中出现严重的膜污染。这意味着 MHP 预处理污泥释放的有机物可作为内碳源用于提高 A2/O-MBR 中的营养物去除效果。
