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首页> 外文期刊>Journal of environmental sciences >Effects of operational factors on soluble microbial products in a carrier anaerobic baffled reactor treating dilute wastewater
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Effects of operational factors on soluble microbial products in a carrier anaerobic baffled reactor treating dilute wastewater

机译：Effects of operational factors on soluble microbial products in a carrier anaerobic baffled reactor treating dilute wastewater

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The effects of feed strength,hydraulic residence time (HRT),and operational temperatures on soluble microbial product (SMP) production were investigated,to gain insights into the production mechanism. A carrier anaerobic baffled reactor (CABR) treating dilute wastewater was operated under a wide range of operational conditions,namely,feed strengths of 300-600 mg/L,HRTs of 9-18 h,and temperatures of 10-28°C. Generally,SMP production increased with increasing feed strength and decreasing temperature. At high temperature (28°C),SMP production increased with decreasing HRT. As the temperature was decreased to 18 and 10°C,the SMP production was at its peak for 12 h HRT. Therefore,temperature could be an important determinant of SMP production along with HRT. A higher SMP to soluble chemical oxygen demand (SCOD) ratio was found at high temperature and long HRT because of complete volatile fatty acid degradation. SMP accounted for 50%-75% of the SCOD in the last chamber of the CABR. As a secondary metabolite,some SMP could be consumed at lower feed strength.

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