Trades School of the Environment, Campus de Ker Lann, 35170 Bruz, France.
University of Rennes 1, ENSCR, CNRS, UMR 6226, Avenue du General Leclerc, CS 50837, 35708 Rennes Cedex 7, France.
J Environ Sci (China). 2013 Sep 1;25(9):1906-12. doi: 10.1016/s1001-0742(12)60239-3.
A fungal consortium including Aspergillus niger, Mucor hiemalis and Galactomyces geotrichum was tested for the treatment of dairy wastewater. The bio-augmentation method was tested at lab-scale (4 L), at pilot scale (110 L) and at an industrial scale in Wastewater Treatment Plants (WWTP). The positive impact of fungal addition was confirmed when fungi was beforehand accelerated by pre-culture on whey (5 g/L lactose) or on the dairy effluent. Indeed, chemical oxygen demand (COD) removal yields increased from 55% to 75% for model medium, diluted milk. While after inoculation of an industrial biological tank from a dairy factory with the fungal consortium accelerated by pre-cultivation in a 1000 L pilot plant, the outlet COD values decreased from values above the standard one (100 mg/L) to values in the range of 50-70 mg/L. In addition, there was a clear impact of fungal addition on the 'hard' or non-biodegradable COD owing to the significant reduction of the increase of the COD on BOD5 ratio between the inlet and the outlet of the biological tank of WWTP. It was in the range of 451%-1111% before adding fungal consortium, and in the range of 257%-153% after bio-augmentation with fungi. An inoculated bioreactor with fungal consortium was developed at lab-scale and demonstrated successfully at pilot scale in
一个包括黑曲霉、毛霉和酿酒酵母的真菌联合体被用于处理乳制品废水。生物强化方法在实验室规模（4 L）、中试规模（110 L）和废水处理厂（WWTP）的工业规模进行了测试。当真菌预先在乳清（5 g/L 乳糖）或乳制品废水中进行预培养加速时，真菌的添加被证实具有积极的影响。事实上，对于模型培养基（稀释牛奶），化学需氧量（COD）去除率从 55%提高到 75%。而在将经过预培养加速的真菌联合体接种到一家乳制品工厂的工业生物罐后，出水口 COD 值从高于标准值（100 mg/L）降至 50-70 mg/L 范围内。此外，由于生物罐进水和出水之间的 BOD5 比值的 COD 增加显著减少，真菌的添加对“硬”或难生物降解 COD 有明显的影响。在添加真菌联合体之前，该比值范围为 451%-1111%，而在真菌生物强化后，该比值范围为 257%-153%。在实验室规模上开发了一个带有真菌联合体的接种生物反应器，并在中试规模上成功地进行了演示。
