Feng Hua-Jun, Hu Li-Fang, Shan Dan, Fang Cheng-Ran, Shen Dong-Sheng
College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, Zhejiang, China.
Biomed Environ Sci. 2008 Dec;21(6):460-6. doi: 10.1016/S0895-3988(09)60003-9.
To examine the effect of hydraulic residence time (HRT) on the performance and stability, to treat dilute wastewater at different operational temperatures in a carrier anaerobic baffled reactor (CABR), and hence to gain a deeper insight into microbial responses to hydraulic shocks on the base of the relationships among macroscopic performance, catabolic intermediate, and microcosmic alternation.
COD, VFAs, and microbial activity were detected with constant feed strength (300 mg/L) at different HRTs (9-18 h) and temperatures (10 degrees C-28 degrees C) in a CABR.
The removal efficiencies declined with the decreases of HRTs and temperatures. However, the COD removal load was still higher at short HRT than at long HRT. Devastating reactor performance happened at temperature of 10 degrees C and at HRT of 9 h. HRTs had effect on the VFAs in the reactor slightly both at high and low temperatures, but the reasons differed from each other. Microbial activity was sensitive to indicate changes of environmental and operational parameters in the reactor.
The CABR offers to certain extent an application to treat dilute wastewater under a hydraulic-shock at temperatures from 10 degrees C to 28 degrees C.
研究水力停留时间（HRT）对载体厌氧折流板反应器（CABR）处理稀废水性能和稳定性的影响，在不同运行温度下进行试验，从而基于宏观性能、分解代谢中间产物和微观变化之间的关系，更深入地了解微生物对水力冲击的响应。
在CABR中，以恒定进水强度（300 mg/L），在不同水力停留时间（9 - 18 h）和温度（10℃ - 28℃）下检测化学需氧量（COD）、挥发性脂肪酸（VFAs）和微生物活性。
去除效率随水力停留时间和温度的降低而下降。然而，短水力停留时间下的COD去除负荷仍高于长水力停留时间。在10℃和水力停留时间为9 h时，反应器性能出现严重恶化。水力停留时间在高温和低温下对反应器中的挥发性脂肪酸均有轻微影响，但原因不同。微生物活性对指示反应器内环境和运行参数的变化较为敏感。
CABR在一定程度上可应用于在10℃至28℃温度下处理受水力冲击的稀废水。
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