利用恶臭曲霉和黑曲霉混合培养优化处理薯片工业废水的生物工艺

Optimization of a biological process for treating potato chips industry wastewater using a mixed culture of Aspergillus foetidus and Aspergillus niger.

作者信息

Mishra B K, Arora Anju

机构信息

Division of Microbiology, Indian Agricultural Research Institute, New Delhi 110 012, India.

出版信息

Bioresour Technol. 2004 Aug;94(1):9-12. doi: 10.1016/j.biortech.2003.11.020.

DOI:10.1016/j.biortech.2003.11.020

PMID:15081479

Abstract

Potato chips industry wastewater was collected and analyzed for biochemical oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TSS) and total carbohydrates. Two Aspergillus species, A. foetidus and A. niger, were evaluated for their ability to grow and produce biomass and reduce the organic load of the wastewater. A. foetidus MTCC 508 and A. niger ITCC 2012 were able to reduce COD by about 60% and produce biomass 2.4 and 2.85 gl(-1), respectively. Co-inoculation of both Aspergillus strains resulted in increased fungal biomass production and higher COD reduction than in individual culture at different culture pH. pH 6 was optimum for biomass production and COD reduction. Amendment of the wastewater with different N and P sources, increased the biomass production and COD reduction substantially. Under standardized conditions of pH 6 and amendment of wastewater with 0.1% KH2PO4 and 0.1% (NH4)2 SO4, a mixed culture gave 90% reduction in COD within 60 h of incubation.

摘要

收集薯片行业废水并分析其生化需氧量（BOD）、化学需氧量（COD）、总悬浮固体（TSS）和总碳水化合物含量。评估了两种曲霉属菌株，即臭曲霉和黑曲霉，它们的生长、产生生物量以及降低废水有机负荷的能力。臭曲霉MTCC 508和黑曲霉ITCC 2012分别能够将COD降低约60%，并产生生物量2.4和2.85 g/L。在不同培养pH值下，两种曲霉菌株共接种导致真菌生物量产量增加，且COD降低幅度高于单独培养。pH 6对于生物量生产和COD降低最为适宜。用不同的氮源和磷源改良废水，可显著提高生物量产量和COD降低幅度。在pH 6以及用0.1% KH2PO4和0.1% (NH4)2 SO4改良废水的标准化条件下，混合培养在培养60小时内使COD降低了90%。