The AF fast start experiment under the room temperature and short HRT conditions in the advanced municipal sewage treatment

2012 International Symposium on Geomatics for Integrated Water Resource Management Pub Date : 2012-11-12 DOI:10.1109/GIWRM.2012.6349637

Fuping Wu, Bo Xue, Zhenzhen Tan, Xiaofei Yan, Yingchao Wang, Hong Ding

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Abstract

AF adopts two steps to start. At first, it forms membrane in aerobic conditions, which fasten the microorganisms on the padding. It adopts intermittent batches aerobic row dry process during the process, which can fasten the activatedsludge on the padding; second, in order that the reactor speeds up the adaptation for effluent, the secondary settling pond effluent and campus life sewage are sent into the AF reactor according to the proportion of dosing complex way into water. The raw water comes from sewage plant, and it starts AF in the temperature of 23-28°C, HRT for 3 to 4h conditions. The experimental results show that the reactor water COD removal rate of the original water stay 28% on average after 7 weeks. It descripts and analyses 3 phase during the anaerobic start, the influence of HRT on the COD removal and the influence of temperature on the COD removal. As a conclusion, the AF is feasible, efficient, low energy consumption in the operation mode in the advanced municipal sewage treatment and also can be used as other deep treatment of wastewater pretreatment technology.

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常温短HRT条件下城市污水深度处理AF快启动试验

AF采用两步启动。首先，它在好氧条件下形成膜，将微生物固定在填料上。过程中采用间歇式好氧排干工艺，可将活性污泥固定在填料上;二是为了加快反应器对出水的适应，将二沉池出水和校园生活污水按比例复合投加方式送入AF反应器进水。原水来自污水厂，在温度23 ~ 28℃，HRT 3 ~ 4h的条件下启动AF。实验结果表明，反应器对原水的COD去除率在7周后平均保持在28%。对厌氧启动过程中的3个阶段、HRT对COD去除率的影响以及温度对COD去除率的影响进行了描述和分析。综上所述，该运行模式在城市污水深度处理中是可行的、高效的、低能耗的，也可作为其他深度处理废水的预处理技术。

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2012 International Symposium on Geomatics for Integrated Water Resource Management

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