硝化反硝化作用技术总结.ppt

城市建设与环境工程学院 20141703066 孙珊 pounds(phenol,cresol...) Sulfide (From acid rain,landfills …) Nitrogen (high concentration lead to eutrophication …) Nitrification Denitrification Oxidize ammonia to nitrite : NH 4 + NO 2 - Oxidize nitrite to nitrate : NO 2 - NO 3 - pounds oxidation ? N itrifying bacteria-simultaneously oxidize NH 4 + pounds( Aromatic compounds) ? Technological application: treatment of industrial wastewater Reduce oxidized pounds (nitrite or nitrate) to molecular nitrogen: NO 3 - N2 Lithotrophic denitrification Oxidize reduced anic pounds Technological application: ? use of nitrate to control sulfide ? remove H2S