Recovery of nitrogen from saponification wastewater by struvite precipitation
نویسندگان
چکیده
منابع مشابه
Ammonium recovery from biocatalytic calcification reactor effluent by struvite precipitation
Chemical precipitation is a suitable method for the recovery and removal of ammonium in water and a fertilizer known as MAP (magnesium ammonium phosphate; MgNH4PO4.6H2O; struvite) is obtained. Additionally, the advantage of this method is that environmental conditions do not have any effect compared to biological methods. In this study, the recovery of ammonium (Cmean=348 mg NH4 /L ± 38.1; n=25...
متن کاملPhosphorus Recovery from Wastewater by Struvite Crystallisation: a Review
The present review provides an understanding of principles of struvite crystallisation and examines the techniques and processes experimented to date by researchers at laboratory, pilot and full scale to maximise phosphorus removal and reuse as struvite from wastewater effluents. Struvite is mainly known as a scale deposit causing concerns to wastewater companies. Indeed struvite naturally occu...
متن کاملStruvite precipitation potential for nutrient recovery from anaerobically treated wastes.
Geochemical equilibrium speciation modeling was used to determine optimum conditions for precipitation of magnesium ammonium phosphate, or struvite, for the recovery of nutrients from anaerobically digested wastes. Despite a wide range of pH values with the potential to precipitate struvite, the optimum pH was determined to be 9.0. Bench experiments conducted on effluent from an anaerobic seque...
متن کاملPhosphorus Recovery from Animal Manures using Optimized Struvite Precipitation
The over-application of phosphorus, as manure by animal feeding operations, is a threat to surface water quality. Concentration of animal feeding operations and over application of manures to cropland has lead to a build-up of phosphorus on many farms (Greaves et al., 1999). Relative to crop needs, manure slurries contain higher levels of phosphorus than nitrogen. When manure is applied to meet...
متن کاملModeling assessment for ammonium nitrogen recovery from wastewater by chemical precipitation.
Chemical precipitation to form magnesium ammonium phosphate (MAP) is an effective technology for recovering ammonium nitrogen (NH4(+)-N). In the present research, we investigated the thermodynamic modeling of the PHREEQC program for NH4(+)-N recovery to evaluate the effect of reaction factors on MAP precipitation. The case study of NH4(+)-N recovery from coking wastewater was conducted to provi...
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ژورنال
عنوان ژورنال: Water Science and Technology
سال: 2010
ISSN: 0273-1223,1996-9732
DOI: 10.2166/wst.2010.060