Bioaugmentation in a newly established LECA-based horizontal flow soil filter reduces the adaptation period and enhances denitrification.
The possibility of enhancing the denitrification of a newly established LECA-based horizontal subsurface flow (HSSF) soil filter receiving pretreated wastewater from a vertical flow filter was studied. The pilot-scale experiment offers evidence regarding the survival and reproduction of introduced microbes taken from an LECA-based HSSF constructed wetland (CW) that has similar internal conditions, after bioaugmentation into newly established LECA-based HSSF CW mesocosms. Bioaugmentation resulted in a trend towards higher and more stable denitrification in the supplemented mesocosms during the nearly half-year study period.
Nurk
Kaspar
K
Institute of Ecology and Earth Sciences, University of Tartu, 46 Vanemuise St., Tartu 51014, Estonia. kaspar.nurk@ut.ee
Zaytsev
Igor
I
Talpsep
Indrek
I
Truu
Jaak
J
Mander
Ulo
U
D000222:Adaptation, Physiological; D000538:Aluminum Silicates / Q000737:chemistry*; D001419:Bacteria / Q000378:metabolism; D001673:Biodegradation, Environmental; D044822:Biodiversity; D000077215:Clay; D005374:Filtration / Q000295:instrumentation* / Q000379:methods*; D008027:Light; D009566:Nitrates / Q000378:metabolism; D009573:Nitrites / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism*; D025341:Principal Component Analysis; D012987:Soil; D014872:Water Movements
D000538:Aluminum Silicates; D009566:Nitrates; D009573:Nitrites; D012987:Soil; D009584:Nitrogen; D000077215:Clay