@ARTICLE{Kuglarz_Mariusz_Post-Digestion_2014, author={Kuglarz, Mariusz and Grübel, Klaudiusz and Bohdziewicz, Jolanta}, volume={vol. 40}, number={No 3}, journal={Archives of Environmental Protection}, howpublished={online}, year={2014}, publisher={Polish Academy of Sciences}, abstract={The aim of the study was to develop an effective treatment of post-digestion liquors highly-loaded with biogenic and organic substances. The scope of the research project encompassed: mesophilic anaerobic digestion of waste activated sludge (WAS) as well as the treatment of post-digestion liquors, coming from the most appropriate HRT value of 25 days, in the process of ammonium magnesium phosphate (struvite) precipitation targeted at ammonia nitrogen binding and a subsequent reverse osmosis (RO) process. It was established that the method combining chemical precipitation and high-pressure filtration ensures a high degree of contaminants removal allowing for a direct release of treated liquors into the natural reservoir. However, in order to decrease the residual NH4+ concentration (6.1 mg NH4+/dm3) in the purified post-digestion liquors below the level allowing for a direct release to the natural reservoir, it turned out to be necessary to apply increased molar ratio of magnesium and phosphates (Mg:NH4+: PO43-= 1.5:1:1.5).}, type={Artykuły / Articles}, title={Post-Digestion Liquor Treatment in the Method Combining Chemical Precipitation with Reverse Osmosis}, URL={http://journals.pan.pl/Content/85947/PDF/10265-Volume40-Issue3-paper_03.pdf}, doi={10.2478/aep-2014-0030}, keywords={anaerobic digestion, biogas, struvite, reverse osmosis, Waste activated sludge}, }