The Exploration of the Effect of Glucose Carbon Source on Denitrification and Denitrification Performance of Low Carbon to Nitrogen Ratio Domestic Wastewater
The improved Carrousel oxidation ditch coupling process is used to treat low carbon to nitrogen ratio domestic sewage.Intermittent aeration mode is adopted,and the dissolved oxygen at the outlet of the oxidation ditch is 2.0～3.0 mg/L,sludge concentration is 2 500～3 500 mg/L,sludge reflux ratio is 80%～95%.When TN and ammonia nitrogen exceed the standard year-round,glucose carbon source is added.The improved Carrousel oxidation ditch of the sewage treatment plant removes ammonia nitrogen,total nitrogen,total phosphorus,CODCr from low carbon to nitrogen ratio domestic sewage The effects of BOD5 and pH are very good,and the effl uent fully meets the Class A Standard of the Pollutant Discharge Standard for Urban Sewage Treatment Plants(GB 19918-2002).
carbon sourceoxidation ditchlow carbon to nitrogen ratiodomestic sewagedenitrification efficiency
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