2009•Environmental Science & TechnologyRequires access
Dairy Wastewater Treated by 4 Bacteria with Different Methods
Lulu Shen
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Abstract
Treatment effects of dairy wastewater were compared by 4 bacteria with suspended bacteria method,activated carbon absorbing bacteria method and embedded immobilized bacteria method using SBR process.Results showed that under the influent COD 395.55mg/L of dairy wastewater and hydraulic retention time for 24h,the best removal efficiency of COD was 44.3% using suspending bacteria method by R-1,the best removal efficiency of COD was 69.06% using activated carbon adsorption method by R-1,and the best removal efficiency of COD was 71.12% using embedded immobilized method by R-1.Strain R-1 was identified as the best bacteria for the treatment of diary wastewater,with the treatment effect of embedded immobilized activated sludge method better than that of activated carbon absorbing activated sludge method and suspended bacteria method.