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J Korean Soc Environ Eng > Volume 38(1); 2016 > Article
J Korean Soc Environ Eng 2016;38(1): 34-41. doi: https://doi.org/10.4491/KSEE.2016.38.1.34
UF-SWRO 혼합공정을 이용한 해수담수화 파일럿 플랜트에서의 해수와 기수의 블렌딩을 통한 보론 및 휴믹산 제거 특성
김원규, 신성훈, 이학수, 우달식
(재)한국계면공학연구소
Removal Characteristics of Boron and Humic Acid by Pre-blending Seawater and Brackish Water Using UF-SWRO Hybrid Process in Pilot-scale Plant for Desalination
Won-Kyu Kim, Sung-Hoon Shin, Haksu Lee, Dal-Sik Woo
Korea Interfacial Science and Engineering Institute
Corresponding author  Dal-Sik Woo ,Tel: 041-522-5025, Fax: 041-522-5026, Email: dswoo7337@n-kisei.re.kr
Received: November 25, 2015;  Revised: December 21, 2015;  Accepted: January 26, 2016.  Published online: January 31, 2015.
ABSTRACT
Using UF-SWRO hybrid process, pre-blending tests of seawater and brackish water were performed to investigate the effects on removal of boron and humic acid (HA). Feedwater pre-blending was set based on TDS concentration from 15,000 mg/L to 27,000 mg/L and analyzed for boron removal characteristics. Also organics rejection at same TDS concentration range was investigated by injecting HA. Boron concentration appeared to be high as TDS concentration was high ranging from 76.60% to 83.27%, but boron concentration in final produced water was increased up to 0.69 mg/L from 0.48 mg/L. In cases of HA tests at 10 mg/L, 22,500 mg/L TDS appeared to be higher removal rate of 17.59% than a very poor result of 8.43% in 27,000 mg/L. But high HA removal rate of 57.14% was obtained in produced water with 22,500 mg/L TDS containing 10 mg/L of HA and 27,000 mg/L TDS yielded lower boron removal rate of 54.49%. Meanwhile it was found that a relatively high flux and recovery rate were obtained following process when feedwater was injected with HA. It is considered that most of fouling substances were eliminated by binding between HA and Ca2+. Thus, when desalination using UF-SWRO with respect to boron and HA, TDS concentration is determined to be advantageous as lower.
Key Words: Desalination, UF-SWRO, Pre-blending, Boron, Humic Acid
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