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http://dx.doi.org/10.17137/Korrae.2014.22.3.68

The Study of the Need to Remove Soluble nitrogen ($NH_3-N$) Generated from Anaerobic digestor Retrofitted in Municipal Wastewater Treatment Plants  

Ahn, Seyoung (Water Engineering & Consulting, Inc.)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.22, no.3, 2014 , pp. 68-75 More about this Journal
Abstract
Soluble nitrogen produced from anaerobic digestor is able to have a strong influence on the effluent water quality of municipal wastewater treatment plants during a winter season in particular. The modeling results using the GPS-X simulation software shows that the soluble nitrogen concentration generated from the anaerobic digestor is 214.1 mg/L in the return flow and 6.2 mg/L in the inflow of the primary settler higher than those in nonexistence of the anaerobic digestor, respectively. In the case of using a separation process (flotation thickener) in order to treat the return flow from the sludge treatment system, the soluble nitrogen concentration in the effluent from the separation process and in the inflow of the primary setter could be 6.0 mg/L higher and 0.7 mg/L lower than those of nonexistence of the process, respectively. The modeling results propose the need of the equipments to be able to remove the soluble nitrogen ($NH_3-N$) produced from the digestor in the improvement projects of anaerobic digestor in municipal wastewater treatment plants.
Keywords
Anaerobic Digestor; Soluble Nitrogen; Simulation; return flow; Modeling;
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