Enhancing struvite precipitation potential for ammonia nitrogen removal in municipal landfill leachate.
This study was conducted to improve struvite precipitation for NH4-N removal purpose in landfill leachate. For this purpose, we evaluated the effect of the feeding sequence of precipitating reagents (magnesium, orthophosphate, and buffering reagent) on NH4-N removal by forming struvite deposits. Struvite precipitation effectively proceeded by an addition of excess magnesium and phosphate sources followed by an addition of the buffering reagent, in which condition the local formation of inappropriate deposits or the contamination of the desired struvite was minimized. We also tested the effect of struvite addition as the seeding materials on NH4-N removal. Seed addition would increase the potential for the struvite crystal growth, which enhanced NH4-N removal performance in landfill leachate treatment.
Kim
Daekeun
D
Department of Environmental Engineering, Chungbuk National University, South Korea.
Ryu
Hong-Duck
HD
Kim
Man-Soo
MS
Kim
Jinhyeong
J
Lee
Sang-Ill
SI
D000641:Ammonia / Q000737:chemistry*; D011232:Chemical Precipitation; D015636:Magnesium Chloride / Q000737:chemistry; D017616:Magnesium Compounds / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D010710:Phosphates / Q000737:chemistry*; D017680:Potassium Compounds / Q000737:chemistry; D012037:Refuse Disposal; D000069877:Struvite; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
D017616:Magnesium Compounds; D010710:Phosphates; D017680:Potassium Compounds; D014874:Water Pollutants, Chemical; D015636:Magnesium Chloride; D000641:Ammonia; D000069877:Struvite; C013216:potassium phosphate; D009584:Nitrogen