RO(역삼투)를 이용하는 산업용수 시설의 폐수처리 최적 설계

다국어 초록 (Multilingual Abstract)

Optimum Design of Wastewater Treatment Process
for an Industrial Water Supply Facility
with Reverse Osmosis Membrane

Park Woo-Hyun
Department of Environment Engineering
Graduate School, Daejeon University
(Directed by Prof. Byung-Uk Bae, Dr. P.E.)

Abstract
The optimum design of wastewater treatment process for an industrial water supply facility with reverse osmosis (RO) membrane was studied. For this purpose, the best method for removing a non-biodegradable organic matters in the RO concentrate was investigated. In addition, a pilot plant was operated to treat the RO concentrate. Following conclusions were made from this study.
1. The characteristics of RO concentrate used in this study was as follows; BOD 9.8 mg/L, CODMn 84.3 mg/L, SS 14.2 mg/L, TN 89.6 mg/L, and TP 1.3 mg/L.
2. Activated carbon adsorption was the best among several methods for removing the non-biodegradable organic matters. The removal efficiency of organics by activated carbon adsorption was 60%.
3. The concentration of CIP(clean in place) wastewater is mainly dependant on the composition of chemicals. Since the concentration of CIP wastewater is very high, an equalization tank should be located in front of the wastewater treatment system. Further study on the CIP chemicals is also needed.
4. The coagulation test using FeCl3 showed that about 50% of COD could be removed. But, the coagulation was very efficient in removing SS.
5. The biodegradability test proved that only 4% of organic matters in the RO concentrate was biodegradable. When the BOD test is conducted, it is very important to eliminate the effect of nitrification.
6. The operation of pilot plan was very useful in understanding the characteristics of RO concentrate. The operation of pilot plan should be continued to cover the winter season when the quality of raw water is getting worse.

목차 (Table of Contents)

• 1장 서 론 1
• 1.1 연구 배경 1
• 1.2 연구 목적 2
• 제2장 문헌연구 3
• 2.1 지표수의 유기물 성상 3
• 2.1.1 성상별 유기물 분포 3
• 2.2.2 성상별 유기물 산화율 7
• 2.2 난분해성 유기물 제거방법 9
• 2.3 RO 농축수 처리공정 및 기술 10
• 2.3.1 국내·외 농축수 처리 현황 분석 10
• 2.3.2 농축수 처리 공정 선정 시 고려 사항 14
• 2.3.3 농축수 처리 공정 선정 방법론 15
• 제3장 실험방법 및 재료 18
• 3.1 난분해성 유기물질 제거를 위한 공정 검토 실험 18
• 3.1.1 Peroxone법(오존+과산화수소) 18
• 3.1.2 활성탄 흡착실험 20
• 3.1.3 응집실험 21
• 3.2 모형플랜트 운영 및 성능평가 실험 22
• 3.2.1 모형플랜트 시설개요 및 공정구성 22
• 3.2.2 모형플랜트 운영공정 및 분석 24
• 3.3 RO 농축수의 생분해도 평가 실험 26
• 제4장 실험결과 및 고찰 27
• 4.1 역삼투막 모형플랜트 폐수 특성 27
• 4.1.1 역삼투막 모형플랜트 폐수발생 특성 27
• 4.1.2 RO 농축수의 생분해도 평가 31
• 4.2 난분해성 유기물질 제거를 위한 공정 검토 33
• 4.2.1 Peroxone법을 이용한 평가 33
• 4.2.2 활성탄 흡착 실험 34
• 4.2.3 응집제별 강화 응집 실험 35
• 4.3 모형플랜트 운영결과 및 성능평가 39
• 4.3.1 모형플랜트 운전조건 39
• 4.3.2 각 공정별 오염물질 성상 42
• 4.2.3 공정별 물질거동 48
• 제5장 결론 51
• 참고문헌 53
• Abstract 56