Comparison of methods for calculating biological wastewater treatment

Due to the increase in discharge of nitrogen and phosphorus compounds into water bodies many countries, problem eutrophication has become most relevant field biological treatment technologies. To solve this problem, technological schemes for purification from biogenic elements have been developed, based on different methods. The concept purification, composition process nutrition heterotrophic microorganisms, as well course methanogenesis are analyzed. analysis methods two Russia Germany. Most facilities designed accordance with SNiP 2.04.03.85, while Germany offers a method developed by German Water Association DWA A131.