Biological treatment of fish processing wastewater:A case study from Sfax City(Southeastern Tunisia)  

作　　者：Meryem Jemli Fatma Karray Firas Feki Slim Loukil Najla Mhiri Fathi Aloui Sami Sayadi 

机构地区：[1]Laboratoire des Bioprocedes Environnementaux,Pole d'Excellence Régional(PER,AUF),Centre de Biotechnologie de Sfax,Universite de Sfax

出　　处：《Journal of Environmental Sciences》2015年第4期102-112,共11页环境科学学报（英文版）

摘　　要：The present work presents a study of the biological treatment of fish processing wastewa at salt concentration of 55 g/L. Wastewater was treated by both continuous stirred-ta reactor（CSTR） and membrane bioreactor（MBR） during 50 and 100 days, respectively. Th biological processes involved salt-tolerant bacteria from natural hypersaline environme at different organic loading rates（OLRs）. The phylogenetic analysis of the correspond excised DGGE bands has demonstrated that the taxonomic affiliation of the most domin species includes Halomonadaceae and Flavobacteriaceae families of the Proteobacteria（Gamm proteobacteria class） and the Bacteroidetes phyla, respectively. The results of MBR w better than those of CSTR in the removal of total organic carbon with efficiencies from 97 to 98.6%. Nevertheless, salinity with increasing OLR aggravates fouling that requires m cleaning for a membrane in MBR while leads to deterioration of sludge settleability a effluent quality in CSTR.The present work presents a study of the biological treatment of fish processing wastewa at salt concentration of 55 g/L. Wastewater was treated by both continuous stirred-ta reactor（CSTR） and membrane bioreactor（MBR） during 50 and 100 days, respectively. Th biological processes involved salt-tolerant bacteria from natural hypersaline environme at different organic loading rates（OLRs）. The phylogenetic analysis of the correspond excised DGGE bands has demonstrated that the taxonomic affiliation of the most domin species includes Halomonadaceae and Flavobacteriaceae families of the Proteobacteria（Gamm proteobacteria class） and the Bacteroidetes phyla, respectively. The results of MBR w better than those of CSTR in the removal of total organic carbon with efficiencies from 97 to 98.6%. Nevertheless, salinity with increasing OLR aggravates fouling that requires m cleaning for a membrane in MBR while leads to deterioration of sludge settleability a effluent quality in CSTR.

关 键 词：Membrane bioreactor Saline effluents Organic removal PCR-DGGE 

分 类 号：X792[环境科学与工程—环境工程]