Treatment with External Carbon Source and Cost Analysis Enhanced Rural Domestic Waste water
The research focused on the representative sequencing batch reactor(SBR)process and anaerobic/anoxic/oxic(AAO)+membrane bioreactor(MBR)process in rural domestic wastewater.Glucose and sodium acetate were used as additional carbon sources for organic compounds.Through chemical analysis,the CODCr content,BOD5 content,dissolution rate,etc.of the two external carbon sources,glucose and sodium acetate,were compared.The removal efficiency and economic benefits of the two external carbon sources for pollutants were compared through jar test and integrated equipment for rural domestic wastewater.The results showed that the dissolution rate of sodium acetate was 2.3 times that of glucose,and CODCr content was 2.4 times.Under the same cost conditions,the removal rate of TN by adding sodium acetate was 96.3％,13％higher than glucose.Under the condition of adding the same CODCr content,the denitrification rate of sodium acetate was about 1.3 times that of glucose,the TN removal rate was 87.2％,3.2％higher than glucose.The removal rate of TP in effluent of the process flow adding sodium acetate was higher,the effect of biological enhanced phosphorus removal was better.The increase rate of sludge concentration with sodium acetate was 29％lower than glucose,the sludge volume index(SVI)value was relatively stable.The risk of sludge bulking was relatively low,sodium acetate was suitable for long-term use as an external carbon source.
万方数据
维普
