Alam Md Zahangir, Fakhru'l-Razi A, Molla Abul H
Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor DE, Malaysia.
J Environ Sci (China). 2004;16(1):132-7.
This study was undertaken to screen the filamentous fungi isolated from its relevant habitats(wastewater, sewage sludge and sludge cake) for the bioconversion of domestic wastewater sludge. A total of 35 fungal strains were tested against wastewater sludge (total suspended solids, TSS 1%-5% w/w) to evaluate its potentiality for enhancing the biodegradability and dewaterability using liquid state bioconversion(LSB) process. The strains were divided into five groups i.e. Penicillium, Aspergillus, Trichoderma, Basidiomycete and Miscellaneous, respectively. The strains WWZP1003, SCahmA103, SCahmT105 and PC-9 among their respective groups of Penicillium, Aspergillus, Trichoderma and Basidiomycete played potential roles in terms of separation (formation of pellets/flocs/filaments), biodegradation(removal of COD) and filtration (filterability) of treated domestic wastewater sludge. The Miscellaneous group was not considered due to its unsatisfactory results as compared to the other groups. The pH value was also influenced by the microbial treatment during fermentation process. The filterability of treated sludge was improved by fungal treatment, and lowest filtration time was recorded for the strain WWZP1003 and SCahmA103 of Penicillium and Aspergillus groups respectively compared with other strains.
本研究旨在筛选从相关生境（废水、污水污泥和污泥饼）中分离出的丝状真菌，用于生活污水污泥的生物转化。总共对35株真菌菌株进行了针对废水污泥（总悬浮固体，TSS 1%-5% w/w）的测试，以评估其利用液态生物转化（LSB）工艺提高生物降解性和脱水性能的潜力。这些菌株分别分为五组，即青霉属、曲霉属、木霉属、担子菌属和其他类。在各自所属的青霉属、曲霉属、木霉属和担子菌属组中，菌株WWZP1003、SCahmA103、SCahmT105和PC-9在处理后的生活污水污泥的分离（形成颗粒/絮凝物/丝状）、生物降解（去除COD）和过滤（过滤性）方面发挥了潜在作用。由于与其他组相比结果不理想，未考虑其他类组。发酵过程中的微生物处理也会影响pH值。真菌处理提高了处理后污泥的过滤性，与其他菌株相比，青霉属的WWZP1003菌株和曲霉属的SCahmA103菌株的过滤时间最短。
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