言語
英語
著者
ZHU, LIEPING The United Graduate School of Agricultural Sciences, Tottori University
KOZAKI, YUKI Faculty of Life and Environmental Science, Shimane University
AGARI, YOSHIHIRO Faculty of Life and Environmental Science, Shimane University
YOSIDA, ISAO The United Graduate School of Agricultural Sciences, Tottori University
MORI, TADAHIRO Institute of Green, Land and Water
内容記述(抄録等)
A laboratory scale study was undertaken to investigate the potential of decomposition of algae sludge by a thermophilic oxic process (TOP) . The characteristics of the thermophilic oxic process are that, a minute amount of excess sludge is formed, and organic materials are efficiently degraded, as well as all water is evaporated by the heat generated by bio-degradation.Feasibility of this study was assessed by determining the decomposition efficiency of added organic material, transference of organic carbon to CO2 and decrease efficiency of chlorophyll-a in media. By using cedar chips as media and waste food oil as an additional energy source, algae sludge could be decomposed by the thermophilic oxic process with the following conditions: total solid (TS) load of 1.5 kg⋅m-3⋅d-1, hydraulic volumetric load of 35l·m-3·d-1, waste food oil addition rate of 15% as added algae sludge and aeration rate of 200l⋅m-3⋅min-1.From above manipulation, more than 98% of chlorophyll-a in added algae sludge was decreased, more than 80% of total organic carbon was transferred into CO2, and due to it, low excess sludge production rate of 0.15 kg/kg-BOD treated has been certified in this process.
主題
eutrophication
algae sludge
decomposition
thermophilic oxic process
掲載誌名
日本水処理生物学会誌
32
4
開始ページ
221
終了ページ
234
ISSN
0910-6758
ISSN(Online)
1881-0438
発行日
1996
DOI
出版者
Japanese Society of Water Treatment Biology
資料タイプ
学術雑誌論文
部局
生物資源科学部 環境共生科学科