Experimental Study on Removal of Nitrogen and Phosphorus from Domestic Wastewater by Biological Methods in Bashang Area
This experiment took domestic sewage in Bashang area in Zhangjiakou as the research object.The sewage was treated by the synergistic action of Spirogyra and EM.The removal ability of nitrogen and phosphorus was investigated by EM and Spirogyra in wastewater in the fragile ecological environment area and the effect of EM on the growth of Spirogyra in algal bacteria symbiotic system.The results showed that under the synergism of effect between Spirogyra and EM symbiotic system in the treatment,the amount of EM flora added in the system was positively correlated with the biomass growth of Spirogyra in a certain range.After centrifugal dilution,the initial pH value of domestic sewage was adjusted to 7.5 with the liquid volume was 10L at incubation amount 6％Spirogyra and 6％EM,at 25℃for 5 days under 16 h/d light of condition.The degradation rate of TN and TP reached 89.2％and 84.4％respectively.It was better than the effect of Spirogyra on sewage alone.The results met the Class V standard for the quality of water environmental standard.
domestic sewagespirogyra,EMnitrogen and phosphorusBaShang areaZhangjiakou
NETL
NSTL
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