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チオシアン酸塩およびアンモニウムとともに2種類の工業用汚泥から得られる好気性顆粒に及ぼす高フェノール負荷の影響
Impact of high phenol loading on aerobic granules from two different kinds of industrial sludge along with thiocyanate and ammonium.
PMID: 32688255 DOI: 10.1016/j.biortech.2020.123824.
抄録
精製スラッジ(R1)と醸造スラッジ(R2)の2種類の異なる工業スラッジを接種した2つのシーケンスバッチ反応器を運転し、高フェノール負荷(5.71kg COD m/日)とアンモニア-窒素及びチオシアン酸塩100mg Lが造粒物の安定性及び性能に及ぼす影響を観察した。その結果、R2造粒物は有機物負荷5.71kg COD m/日までは安定して全ての汚染物質を分解したが、R1造粒物は有機物負荷3.32kg COD m/日以上になると崩壊した。一方、R1の顆粒は3.32kg COD m/日以上の有機物負荷で崩壊したが、フェノール負荷が高くなると、R1では3.43mg COD除去mgVSS日、R2では16.35mg COD除去mgVSS日となり、初期汚泥活性は8.01(精製汚泥)、6.56(醸造汚泥)であった。
Two sequencing batch reactors inoculated with two different kinds of industrial sludge; refinery sludge (R1) and brewery sludge (R2), were operated to observe the impact of high phenol loading (5.71 kg COD m day) along with 100 mg L of ammonia-nitrogen and thiocyanate on the granular stability and performance. R2 granules were stable and degraded all the pollutants up to an organic loading of 5.71 kg COD m day with the large size and high extracellular polymeric substances of 2769.94 ± 62.26 µm and 114.83 ± 1.33 mg gVSS, respectively, whereas R1 granules disintegrated at an organic loading of more than 3.32 kg COD m day. At higher phenol loading, granular biomass activity was 3.43 and 16.35 mg COD removed mgVSS day in R1 and R2, respectively, from the initial sludge activities of 8.01 (refinery sludge) and 6.56 (brewery sludge) mg COD removed mgVSS day.
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