Title: Study on the effect of acetate sodium concentration on denitrifying phosphorus removal
Abstract: By controlling the concentration of acetate sodium(NaAC),the effect of acetate sodium on denitrifying phosphorus removal was studied in a laboratory SBR under the anaerobic/anoxic condition.The experimental results demonstrated that the max.of phosphorus released appeared at a C/P ratio of 30,which indicated an optimum C/P ratio.In addition,the amount ratio of phosphorus uptake to what is released was 1.58.The removal efficiency of phosphorus by denitrification was up to more than 89%,with the removal efficiency of nitrate above 98%.Removal ratio of COD to NO3-N to PO43-should be 1∶0.18∶0.22(gCOD∶gN∶gP).When the ratio of C/P was lower than 30,the denitrifying rates approximately have the equal value,and the lower the rate of C/P,the faster the rates of DNPA.Nevertheless,low acetate sodium concentration was apt to cause sludge bulking and decomposing.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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