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Start-up of anaerobic reactors for slaughterhouse wastewater treatment REA
FIA,RONALDO; PEREIRA,ERLON L.; FIA,FÁTIMA R. L.; EMBOABA,DÉBORA G.; GOMES,EMANUEL M..
This study aimed to evaluate the start-up of a horizontal anaerobic fixed bed reactor (HAFBR) followed by an upflow anaerobic sludge blanket (UASB) for the slaughterhouse wastewater treatment. HAFBR was filled with bamboo rings and had 1.2 m in length, 0.10 m in diameter and volume of 7.5 L. The UASB had the volume of 15 L. The HAFBR and UASB operated at organic loading rate and hydraulic retention time average of 8.46 and 3.77 kg m-3 d-1 of COD and 0.53 and 0.98 days, respectively. During 150 days of monitoring system it was found pH 6.8, relatively high values of bicarbonate alkalinity (> 1000 mg L-1) and reduced values of volatile acids (70 to 150 mg L-1), which afforded average removal efficiencies of COD total and total suspended solids of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: UASB; Anaerobic filter; Slaughterhouse; Organic matter.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000200331
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The Performance of UASB Reactor Treatment of Squeezed Dairy Manure OAK
梅津, 一孝; 大山, 卓英; 岸本, 正; 高橋, 潤一; 松本, 奈美; 濱本, 修; UMETSU, Kazutaka; KISHIMOTO, Tadashi.
本研究はUASB (Upflow Anaerobic Sludge Blanket) 発酵法による搾汁乳牛糞尿の処理についてグラニュール量の異なる有効容積2000mLの発酵槽を2基用い, 発酵温度を35℃, 水理学的平均滞留時間を48時間, 投入COD負荷を1.35~2.62g/L/dayの条件でバイオガス生成およびCOD除去能力を検討した。バイオガス生成量は投入COD負荷の上昇に従い増加し, 投入COD負荷とバイオガス生成量は直線的関係にあることが明らかとなった。COD除去率は投入COD負荷を1.35g/L/dayに設定した1~12日目で最も高い値で推移した。その後COD除去率は投入COD負荷を上昇させるに従い, 徐々に減少した。グラニュール量を500mLとした発酵槽は250mLとした発酵槽に比べ, 常に高い性能を有した。またこれらの関係を Oleszkiewicz (1981) のモデルと Sanchez (1994) のモデルを用いて検討した。
Palavras-chave: UASB; 上向流嫌気発酵法; 乳牛糞尿; メタン発酵; COD負荷.
Ano: 2004 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4319
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Peptidolytic microbial community of methanogenic reactors from two modified UASBs of brewery industries BJM
Díaz,C.; Baena,S.; Patel,B.K.C.; Fardeau,M.L..
We studied the peptide-degrading anaerobic communities of methanogenic reactors from two mesophilic full-scale modified upflow anaerobic sludge blanket (UASB) reactors treating brewery wastewater in Colombia. Most probable number (MPN) counts varied between 7.1 x 10(8) and 6.6 x 10(9) bacteria/g volatile suspended solids VSS (Methanogenic Reactor 1) and 7.2 x 10(6) and 6.4 x 10(7) bacteria/g (VSS) (Methanogenic Reactor 2). Metabolites detected in the highest positive MPN dilutions in both reactors were mostly acetate, propionate, isovalerate and, in some cases, negligible concentrations of butyrate. Using the highest positive dilutions of MPN counts, 50 dominant strains were isolated from both reactors, and 12 strains were selected for sequencing their 16S...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anaerobic peptide-degrading bacteria; MPN; UASB; 16S rRNA gene.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000300022
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