Evaluation of fungal potentiality for bioconversion of domestic wastewater sludge

Abstract： 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. 作 者： Md.Zahangir Alam    A.Fakhru'l-Razi    Abul H.Molla   作者單位： Md.Zahangir Alam(Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Purra Malaysia, 43400 UPM Serdang, Selangor DE,Malaysia;Department of Biotechnology Engineering, Faculty of Engineering, International Islamic University Malaysia, Ja)

A.Fakhru'l-Razi,Abul H.Molla(Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Purra Malaysia, 43400 UPM Serdang, Selangor DE,Malaysia) 

期 刊： 環(huán)境科學(xué)學(xué)報(bào)(英文版)  ISTICSCI   Journal： JOURNAL OF ENVIRONMENTAL SCIENCES  年，卷(期)： 2004, 16(1)  分類號(hào)： X703 X17  Keywords： filamentous fungi    screening    wastewater sludge    pellets    filtration    liquid state bioconversion