Optimization of compatible mixed cultures for liquid state bioconversion of municipal wastewater sludge
Optimization of compatible mixed cultures for liquid state bioconversion of municipal wastewater sludge
复制标题
DOI：
10.1023/a:1025686113945
复制
发表时间：
2003-10-01
影响因子：
2.9
通讯作者：
Molla, AH
中科院分区：
文献类型：
--
作者：
Alam, MZ;Fakhru'l-Rai, A;Molla, AH
对从污水、污泥和泥饼中分离到的丝状真菌菌株进行亲和/不亲和混合培养，筛选出4株丝状真菌：青霉（P）、尼日尔曲霉（A）、哈茨木霉（T）和黄孢原毛革菌（PC）。将P. corylophilum和A.尼日尔（P/A）、P. corylophilum和P. chrysosporium（P/PC）、P. corylophilum和T. harzianum（P/T）;尼日尔和T. harzianum（A/T）;尼日尔和P. chrysosporium（A/PC）;以哈茨木霉和黄孢原毛平革菌（T/PC）作为相容/不相容混合菌，研究了它们在城市污水污泥生物转化过程中的潜在性能。结果表明，P/A、P/PC和A/PC组合为亲和培养，其余组合（P/T、A/T和T/PC）为不亲和培养。结果表明，在亲和混合培养条件下，干生物量和干滤饼产量最高。尼日尔（P/A）。在P/A微生物混合培养的情况下，观察到COD的最大降低（90%）和处理污泥的过滤时间减少。pH值也受到真菌培养物的影响。与其他处理（2天和6天）相比，通过使用微生物混合培养物在处理4天后观察到有效结果。
The filamentous fungal strains such as Penicillium corylophilum (P), Aspergillus niger (A), Trichoderma harzianum (T) and Phanerochaete chrysosporium (PC) isolated from its relevant sources (wastewater, sewage sludge and sludge cake) were selected for compatible/incompatible mixed cultures. Six combinations of P. corylophilum and A. niger (P/A); P. corylophilum and P. chrysosporium (P/PC); P. corylophilum and T. harzianum (P/T); A. niger and T. harzianum (A/T); A. niger and P. chrysosporium (A/PC); T. harzianum and P. chrysosporium (T/PC) were used to evaluate their potential performance as compatible/incompatible mixed culture for the treatment of municipal wastewater sludge in a bioconversion process. The results of the present study showed that the combinations of P/A, P/PC and A/PC showed compatible growth and the rest of the combinations ( P/T, A/T and T/PC) were incompatible cultures. A maximum production of dry biomass and dry filter cake were recorded in the compatible mixed culture of P. corylophilum and A. niger (P/A). A maximum reduction of COD (90%) and a decreased filtration time of treated sludge was observed in the case of P/A microbial mixed culture. The pH value was also affected by the fungal cultures. Effective results were observed by using microbial mixed culture after four days of treatment compared to other treatments (2 and 6 days).