title: Nitrification and denitrification processes related to waste water treatment.
mesh_terms: D000388:Air; D000693:Anaerobiosis; D001419:Bacteria / Q000378:metabolism*; D002244:Carbon / Q000378:metabolism; D005374:Filtration; D006863:Hydrogen-Ion Concentration; D009584:Nitrogen / Q000378:metabolism*; D010084:Oxidation-Reduction; D012722:Sewage; D013696:Temperature; D014871:Water Microbiology
chemical_list: D012722:Sewage; D002244:Carbon; D009584:Nitrogen