Bioaugmentative Approaches for Dairy Wastewater Treatment | Science Publications

American Journal of Agricultural and Biological Sciences

Irina Schneider¹  Yana Topalova¹ 

关键词: Acclimation;    immobilization;    bioaugmentation;    microbiological preparations;    biofilm;   

DOI  :  10.3844/ajabssp.2010.459.467

学科分类：农业科学（综合）

来源: Science Publications

【 摘 要 】

Problem statement: The achievement of a good ecological status of water receivers afterdischarge of waste or partially treated water from dairy industry requires harmonic interaction betweenwater treatment technology and self-purification processes. Approach: The present research includedtwo modules. First: an anaerobic treatment process for dairy wastewater in broadly spread sequencingbatch bioreactor with fixed biomass was studied. As a source of active biological system speciallytreated and acclimated activated sludge from Sofia Wastewater Treatment Plant was used. Theacclimation and immobilization of initially inoculated biomass, the addition of microbiologicalpreparations and its modification for increase of the biodegradation activity to target pollutants werestudied as opportunities for the stimulation of water treatment process in bioreactors and waterreceiver. Second: self-purification processes in а water receiver for partially treated dairy wastewaterwere investigated. The functional role and restructuring of the microbial communities in the water,sediment water and sediments were studied. Results: The results showed that the most importantapproaches for achieving high effectiveness of wastewater treatment process were both the acclimationand immobilization of biomass. In that aspect the data for the water receiver confirmed this conclusion.These two processes increased biodegradation effectiveness of the target pollutant (protein) with 67%.Conclusion: The effect of the added preparations was smaller (protein biodegradation was increased to9% for the different biological systems). It was thoroughly related to low improvement of the rate ofmetabolism and functioning of the biological system mainly on an enzyme level.

【 授权许可】

Unknown