生物处理垃圾渗滤液的真菌处理方法。
Approach to a fungal treatment of a biologically treated landfill leachate.
机构信息
Department of Chemical and Environmental Engineering, University of Oviedo, C/Julián Clavería, s/n, E-33006, Oviedo, Asturias, Spain.
Department of Chemical and Environmental Engineering, University of Oviedo, C/Julián Clavería, s/n, E-33006, Oviedo, Asturias, Spain.
出版信息
J Environ Manage. 2022 Nov 15;322:116085. doi: 10.1016/j.jenvman.2022.116085. Epub 2022 Sep 3.
White-rot fungi (WRF) have the ability to synthetize extracellular enzymes that could degrade recalcitrant pollutants. The aim of this work was to evaluate the use of P. chrysosporium to treat a biologically and physically pre-treated landfill leachate which high load of refractory compounds (COD>1000 mg/L, BOD<50 mg/L) in order to reduce COD and colour. Batch tests were carried out at 26 °C and 135 rpm for 15 days. The soluble chemical oxygen demand (sCOD), soluble biological oxygen demand (sBOD) and colour, as well as the lignin peroxidase (LiP) and manganese peroxidase (MnP) enzymatic activities were analysed. Besides, the effects of different operating conditions, i.e., pH control, permeate dilution and supplementation, on treatment efficacy were investigated. The control of pH was shown to be key for fungal treatment. In addition, it was found that the addition of carbon and nitrogen sources improved the enzymatic synthesis and the removals of sCOD and colour. Data here obtained open the possibility of using fungi for reducing the amount of recalcitrant pollutants still present in treated landfill leachates or similar effluents.
白腐真菌（WRF）具有合成能够降解难处理污染物的胞外酶的能力。本工作旨在评估利用 P. chrysosporium 处理经过生物和物理预处理的垃圾渗滤液，该渗滤液含有高浓度的难处理化合物（COD>1000mg/L，BOD<50mg/L），以降低 COD 和色度。在 26°C 和 135rpm 下进行批处理实验，时间为 15 天。分析了可溶性化学需氧量（sCOD）、可溶性生物需氧量（sBOD）和色度，以及木质素过氧化物酶（LiP）和锰过氧化物酶（MnP）的酶活性。此外，还研究了不同操作条件，即 pH 控制、渗透液稀释和补充，对处理效果的影响。结果表明，pH 的控制对真菌处理至关重要。此外，还发现添加碳源和氮源可以提高酶的合成以及 sCOD 和色度的去除率。本研究结果为利用真菌减少处理后的垃圾渗滤液或类似废水中仍存在的难处理污染物的数量提供了可能。
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