Development of Multistage Anaerobic Wastewater Treatment System Consisting of Anaerobic and Downflow Hanging Sponge (DHS) Reactors
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- KURAMOTO Yoshiharu
- Hiroshima Prefectural Institute of Industrial Science and Technology
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- TAKAHASHI Masanobu
- Hiroshima Prefectural Institute of Industrial Science and Technology
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- SUMINO Haruhiko
- Department of Civil Engineering, Gifu National College of Technology
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- YAMAGUCHI Takashi
- Department of Civil Engineering, Kure National College of Technology
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- NISHIO Naomichi
- Graduate School of Advanced Science of Matter, Hiroshima University
Bibliographic Information
- Other Title
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- 多段嫌気性反応槽(UASB)と下降流懸架式スポンジ(DHS)反応槽を組み合わせた高濃度有機性廃水処理システムの開発
- タダン ケンキセイ ハンノウソウ UASB ト カコウリュウ ケンカシキ スポンジ DHS ハンノウソウ オ クミアワセタ コウノウド ユウキセイ ハイスイ ショリ システム ノ カイハツ
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Abstract
The processing performance of a high-strength-wastewater treatment system was investigated by feeding the system with sugar-containing synthetic wastewater for more than one year. The system consisted of a (35°C) mesophilic upflow anaerobic sludge blanket (UASB) reactor for pretreatment, and an ambient UASB reactor and a downflow hanging sponge (DHS) reactor for post-treatment. The DHS reactor was constructed using a liquid distributor and a packing material made with sponge cubes. A portion of the final effluent was recycled to the inlet of post-treatment with a recirculation ratio in the range of 2.0-0.3. The synthetic wastewater was made with organic waste from a food factory; it consisted of about 3,000mg of CODCr · l-1, 2,000mg of BOD · l-1 and 500mg of SS · l-1. The system exhibited excellent performance in organic removal, achieving 98% CODCr and 96% SS removal rates (final effluent: 43mgCODCr · l-1, 12mgBOD · l-1 and 15mgSS · l-1) with 75% of the methane recovered from the removed CODCr under conditions of 24hrs of HRT, a CODCr volumetric loading rate of 3.0 kg · m-3 · d-1 (35°C UASB as pretreatment, 1.4 kg · m-3 · d-1; post-treatment, 1.6 kg · m-3 · d-1), and low final effluent temperatures such as 1-10°C. The proposed system effectively saves energy and decreases the amount of excess sludge. It is considered as a novel process to treat high-strength wastewaters up to a discharge quality level.
Journal
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- Journal of Japan Society on Water Environment
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Journal of Japan Society on Water Environment 30 (2), 83-88, 2007
Japan Society on Water Environment
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Details 詳細情報について
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- CRID
- 1390001205081318400
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- NII Article ID
- 10018496812
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- NII Book ID
- AN10372439
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- COI
- 1:CAS:528:DC%2BD2sXjsFSltrw%3D
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- ISSN
- 18813690
- 09168958
- http://id.crossref.org/issn/09168958
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- NDL BIB ID
- 8683452
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed