Treatment of Dilute Wastewater in a UASB Reactor at a Moderate Temperature : Performence Aspects
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概要
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The treatability of dilute wastewater by a USAB reactor was evaluated. After being seeded with digested sewage sludge, a 100-l reactor was operated at 25℃ under continuous feeding with synthetic wastewater having a COD of 300 mg/l for over 700 d. The hydraulic retention time (HRT) was successfully decreased in steps to 9 h (0.73 kg COD/m^3/d). Granules began to be observed after the reactor had been in operation for 9 months.At an HRT of 9 h, the following results were obtained : soluble and total COD removal, 81±5% and 73±7%, respectively; methane production, 212 Nl/kg COD removed and 153 Nl/kg COD added; substrate conversion, 0.24 kg COD removed/kg VSS/d.
- 公益社団法人日本生物工学会の論文
- 1997-02-25
著者
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Agrawal L
Civil Engineering Technology Department Technological Division Tokyu Construction Co. Ltd.
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Agrawal Lalit
Civil Engineering Technology Department Technological Division Tokyu Construction Co. Ltd.
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Harada Hideki
Department Of Civil And Environmental Engineering Tohoku University
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Harada Hideki
Department Of Environment Systems Engineering Nagaoka University Of Technology
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Okui Hiroyuki
Civil Engineering Technology Department Technological Division Tokyu Construction Co. Ltd.
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Harada Hideki
Department Of Anesthesiology Kurume University School Of Medicine
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