کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
681637 | 1460034 | 2012 | 5 صفحه PDF | دانلود رایگان |
In the present study possibility of coupling biofilter to arrest ammonia (NH3) emission to the atmosphere from the integrated UASB and stripper (UASB + ST) system treating poultry litter leachate was studied. UASB + ST with biofilter (UASB + ST + BF) exhibited removal efficiency (RE) of NH3 in the range of 98–99% (below 28 ppm V (parts per million by volume)) with low cost agricultural residue as a bedding material. Mass transfer dynamics of TAN in the system revealed that TAN loss to atmosphere was below 1% in UASB + ST + BF where as it was in the range of 70–90% in UASB + ST. Cost estimates revealed that financial implications due to the addition of biofilter were below 10% of total capital cost. TAN retained in the bedding material of biofilter could also be utilized as soil conditioner upon saturation.
► Poultry litter leachate was highly biodegradable and amenable for biomethanation.
► Integrated system of UASB, stripper and biofilter was benign eco-friendly process.
► Odour problem due to NH3 from the stripper could be eliminated to the level of 99%.
► Mass transfer dynamics of total ammoniacal nitrogen in the system was carried out.
► Ammonia was retained in the system for possible reuse as soil conditioner.
Journal: Bioresource Technology - Volume 109, April 2012, Pages 234–238