Application of Struvite Process for Nutrient Recovery from Anaerobic Digesters of Livestock Wastewater
نویسندگان
چکیده
Process of struvite (MgNH4PO4·6H2O) precipitation is a promising method for phosphorus recycling. The use of cheap magnesium ore for precipitation struvite as phosphate recovery has been examined. The optimal conditions for precipitation are pH 9.0 and Mg: 4 NH : 4 PO molar ratio 1.1:30.7:1. Linear correlation of experimental data is in qualitative agreement with modelling calculation. Surface characterization analysis demonstrates that struvite is the dominant component of precipitate. Fertility value tests show that struvite precipitate could be available as slow-release fertilizer.
منابع مشابه
Phosphorus precipitation in anaerobic digestion process pdf
Anaerobic digestion is the most widely process used for the stabilisation of. Phosphorus Precipitation in Anaerobic Digestion Process. E-Book PDF.treatment can achieve excellent phosphorus removals, however it can also influence the process of anaerobic digestion. From pdf preview for outlook 2007 free download monitoring the performance of. The pdf vi jn3 anaerobic digestion of excess sludge b...
متن کاملExploring Forward Osmosis Systems for Recovery of Nutrients and Water
Livestock wastewater contains a large amount of nutrients that are available for recovery. In this study, a proof of concept process based on Forward Osmosis (FO) was proposed and investigated for in-situ formation of struvite from digested swine wastewater. This FO system took advantage of a drawback reverse solute flux (RSF) and used the reversed-fluxed Mg for struvite precipitation, thereby ...
متن کاملBiological Nutrient Removal Model No. 2 (BNRM2): a general model for wastewater treatment plants.
This paper presents the plant-wide model Biological Nutrient Removal Model No. 2 (BNRM2). Since nitrite was not considered in the BNRM1, and this previous model also failed to accurately simulate the anaerobic digestion because precipitation processes were not considered, an extension of BNRM1 has been developed. This extension comprises all the components and processes required to simulate nit...
متن کاملStudy of Struvite Precipitation in Anaerobic Digesters
-In this paper struvite formation and crystal forms in anaerobic digesters under differing feed types and support media have been studied. Struvite appears when the medium contains magnesium, ammonium and phosphate ions. NH + can be supplied from protein degradation, phosphate from bacterial exudation and Mg 2+ by the supports. The precipitation of struvite has also been checked with real feedi...
متن کاملThermophilic anaerobic digestion to increase the net energy balance of corn grain ethanol.
U.S. production of fuel ethanol from corn grain has increased considerably over the last 10 years. Intense debate regarding the true environmental impact of the overall production process has been ongoing. The present study evaluated the utilization of thin stillage (a major byproduct of the dry-mill corn grain-to-ethanol process) in laboratory-scale thermophilic anaerobic sequencing batch reac...
متن کامل