Ecological treatment of organic wastewater by terraneous Ipomoea aquatica Forsk

The effect of wastewater treatment by terraneous Ipomoea aquatica Forsk was studied.Ipomoea aquatica Forsk shows positive removal effect on organic nitrogen and COD.Under aerating conditions,Ipomoea aquatica Forsk can remove 90% or more COD when feeding COD concentration is 1300mg/L, with a maximum removal capacity of 10.56g/L·d when feeding COD concentration is 2600mg/L.Inorganic and organic nitrogen removal rate can reach,respectively 94% and 73% or more.Compared with Eichhornia crassipes Solms,Ipomoea aquatica Forsk has better acclimatization and is more efficient for biodegradation of piggery wastewaters.