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J Korean Soc Environ Eng > Volume 38(2); 2016 > Article
J Korean Soc Environ Eng 2016;38(2): 79-86. doi: https://doi.org/10.4491/KSEE.2016.38.2.79
호기성 그래뉼 슬러지를 이용한 RO 농축수의 생물학적 처리에 관한 연구
김현구1, 안대희1, 조은하2, 김한용2, 예형영3, 문정수3
A Study on the Biological Treatment of RO Concentrate Using Aerobic Granular Sludge
Hyun Gu Kim1, Dae Hee Ahn1, Eun Ha Cho2, Han Yong Kim2, Hyoung Young Ye3, Jung Soo Mun3
1BlueBank Co., Ltd.
2TAEYOUNG Engineering & Construction Co., Ltd.
3LOTTE Engineering & Construction Co., Ltd.
Corresponding author  Dae Hee Ahn ,Tel: 031-321-5901, Fax: 031-336-6336, Email: dhahn@mju.ac.kr
Received: February 1, 2016;  Revised: February 22, 2016;  Accepted: February 23, 2016.  Published online: February 29, 2016.
The purpose of this study is to efficiently improve biological sequencing batch reactor (SBR) system of high-concentrated nitrate nitrogen in reverse osmosis (RO) concentrates by total dissolved solids (TDS) regulation. Since a laboratory-scale SBR system had been operated, we had analyzed specific denitrification rate (SDNR) and specific oxygen uptake rate (SOUR) for microbial activity in according to various injection concentration of TDS. As a result, higher injection concentration of TDS decreased SDNR, and delayed denitrification within denitrification process. Moreover, the higher injection concentration of TDS was, the lower microbial activity was during operation of laboratory-scale SBR system. Therefore, the regulation of TDS injection concentration is necessary to improve efficiency of nitrate nitrogen in the biological SBR system, and treatment of calcium ion (Ca2+) is also specifically focused to remove nitrate nitrogen. Moreover, analytical data of SDNR and SOUR can be the effective kinetic design parameters to application of biological treatment of RO concentrate by aerobic granular sludge (AGS).
Key Words: Aerobic Granular Sludge, Nitrate, RO Concentrate, Sequencing Batch Reactor
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