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http://dx.doi.org/10.17663/JWR.2017.19.4.508

Effect of MLSS and Micro-algae on Nitrification based Photosynthetic Oxygen  

Lee, Jiwon (Department of Civil Engineering, Seoul National University of Science and Technology)
Gil, Kyungik (Department of Civil Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of Wetlands Research / v.19, no.4, 2017 , pp. 508-514 More about this Journal
Abstract
Water-bloom and red tide due to eutrophication have been overgrown and have caused various environmental problems. Recently, however, research on bid-diesel that can utilize algae as an energy source has been actively carried out. In particular, many studies variously have been conducted to utilize algal photosynthesis oxygen as a supply method for reducing the energy by an air blower in MWTP. In this study, a lab scale algae-nitrification reactor was operated to replace the oxygen required for nitrogen removal and the operation period was largely divided into three sections. In the first section, ammonia nitrogen removal efficiency was 24 ~ 38% according to the MLSS (Mixed Liquer Suspended Solid) concentration. In the second section, ammonia nitrogen removal efficiency was 38 ~ 50% according to the micro-algae concentration and in the last section ammonia nitrogen removal efficiency was 61 ~ 80% according to HRT (Hydraulic Retention Time). As a result, as the MLSS decreased and algae biomass increased, the ammonia nitrogen removal efficiency tended to increase, but the effect of Algae biomass was greater than that of MLSS.
Keywords
eutrophication; micro algae; nitrogen; nitrification; photosynthesis;
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