Title of article :
The cost and effectiveness of solids thickening technologies for treating backwash and recovering nutrients from intensive aquaculture systems
Author/Authors :
Sharrer، نويسنده , , Mark and Rishel، نويسنده , , Kata and Taylor، نويسنده , , Amanda and Vinci، نويسنده , , Brian J. and Summerfelt، نويسنده , , Steven T.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Abstract :
The cost and effectiveness of three solids thickening processes, i.e., gravity thickening settlers (GTS), inclined belt filters (IBF), geotextile bag filters (GBF), were individually evaluated with the biosolids backwash produced in intensive aquaculture systems equipped with microscreen drum filters and radial-flow settlers. The IBF produced the cleanest discharge and highest treatment efficiencies, likely reflecting the rapid efficiency with which solids are separated from wastewater. The GBF was the least effective process, i.e., GBF leachate contained the highest concentrations of TP, TN, and cBOD. However, GBF was most effective for sludge volume reduction. Capital cost estimates for an IBF were more than twice that of GTS and GBF of similar treatment capacity. The GTS had the lowest capital and annual operating cost estimates. The estimated annual operating cost of the GBF was orders of magnitude higher than the IBF and GTS, due to the high cost to replace bags.
Keywords :
Biosolids capture , Nutrient recovery , Geotextile filter , Inclined belt filter , Gravity thickening settler
Journal title :
Bioresource Technology
Journal title :
Bioresource Technology