Prasertkulsak S, Chiemchaisri C, Chiemchaisri W, Itonaga T, Yamamoto K
Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand.
Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand.
Chemosphere. 2016 May;150:624-631. doi: 10.1016/j.chemosphere.2016.01.031. Epub 2016 Feb 3.
Pilot-scale membrane bioreactor (MBR) was operated at a short hydraulic retention time (HRT) of 3 h for the treatment of hospital wastewater. The removals of eleven pharmaceutical compounds in MBR operated at different mixed liquor suspended solids (MLSS) level were investigated during which nitrification degree was differed. The results experiments revealed the importance of immediate adsorption onto the colloidal particles in supernatant of MBR sludge and subsequently removed by membrane filtration for the recalcitrant pharmaceutical compounds. Nevertheless, the removals through biodegradation during short HRT were also found significant for some compounds. DGGE profile revealed the development of pharmaceutical degrading microorganisms in MBR.
中试规模的膜生物反应器（MBR）在3小时的短水力停留时间（HRT）下运行，用于处理医院废水。研究了在不同混合液悬浮固体（MLSS）水平下运行的MBR中11种药物化合物的去除情况，在此期间硝化程度有所不同。实验结果表明，对于难降解的药物化合物，立即吸附到MBR污泥上清液中的胶体颗粒上并随后通过膜过滤去除非常重要。然而，对于某些化合物，在短HRT期间通过生物降解的去除也很显著。变性梯度凝胶电泳（DGGE）图谱揭示了MBR中药物降解微生物的发展情况。
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