Application of Gamma irradiation in treatment of Waste Activated Sludge to Obtain Class a Biosolids | Science Publications

American Journal of Environmental Sciences

Mohammed I. AL-Ghonaiem¹  Abdelnasser S.S. Ibrahim¹  Ali A. Al-Salamah¹ 

关键词: Colony Forming Units (CFU);    Most Probable Numbers (MPN);    Dry Solids content (DS);    Gamma radiation;    gamma irradiation;    bacterial parameters;    fecal coliforms;    generated wastewater;    pathogens entering;    dry sludge;    Salmonella spp;   

DOI  :  10.3844/ajessp.2010.500.504

学科分类：环境科学（综合）

来源: Science Publications

【 摘 要 】

Problem statement: The main objective of the current study was investigation of thepossible application of Gamma irradiation for treatment of the activated sludge generatedwastewater treatment stations, to achieve the standard requirements in term of pathogens content.Approach: Activated sludge samples were collected from Riyadh wastewater plant and analyzedquantitatively for the presence of important bacterial parameters including fecal coliforms and Salmonellaspp. The collected samples were treated with various doses of Gamma irradiation and bacterial count wasdetermined. Results: The results indicated that all tested sludge samples were positive for the presence offecal coliforms and Salmonella spp, with different counts in different stages of wastewater treatment. Theraw sludge showed to have the highest coliforms and Salmonella spp counts of 1.1

【 授权许可】

Unknown