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용수공급을 위한 삼양 3수원 담수화 공정에 관한 연구

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Author(s)
김우찬
Issued Date
2014
URI
http://dcoll.jejunu.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000007093
Abstract
Over ninety-five percent of water supply of Jeju depends on underground water for
living and farming. However, as the demand for water is rising sharply due to the
promotion of large-scale development projects and an increase in the number of tourists,
the water supply is expected to run short sporadically in some places for the summer
season. Therefore, it is necessary to develop additional drinking water sources.
Even though developing underground water is regarded as the easiest way to deal with
the water shortage issue, an increasing number of people worry that the underground
water might be overexploited. In this regard, the ways to make use of the Samyang 3
catchment area, once developed as a drinking water resource but treated as an idle
source of water supply because the chlorine ion concentration exceeded the water quality
standard, will be examined in this study. The research composed the optimal
preconditioning process according to the application of a desalination process with the
purpose of demineralizing salinity, predicted water quality, and analyzed economic
feasibility. In addition, the research compared it with the development of underground
water and evaluated the economic feasibilities of both cases.
In order to analyze the feasibility, design factors were derived and the optimal
preconditioning process was introduced by installing a 50-ton/day pilot plant. As a result,
the study concluded that if steadily responding to changes in water quality of the
untreated water and considering changes in volume of groundwater, it is appropriate to
push ahead with the measures by dividing the institutional capacity of 8,000 m3/d into
two steps.
The desalination process consists of several facilities for water intake, preconditioning,
reverse osmosis, and postprocessing. For the preconditioning process, it was determined
that after applying and testing a number of processes, it is most cost-effective to adopt
multiple media filters composed of anthracite and filtering sand, taking into consideration
the good quality of groundwater.
The operating result shows that the quality of the untreated water meets the quality
standard of drinking water except for chlorine ion concentration, so it is possible to
secure very stable water quality after treating it at the reverse osmosis desalination
process. On top of this, based on the analysis, the production cost is less than 50% of
freshening standard seawater.According to the result of analyzing the feasibility for the implementation of the
desalination process, it is economically feasible to introduce the desalination process at
BC Ratio and the net present value (NPV). In particular, considering the current policy of
curbing the development of underground water and decreasing level of underground water
during a drought, it has been concluded that implementing the desalination process
utilizing discarded groundwater is necessary in the mid and long run.
Department
산업대학원 환경공학과
Awarded Date
2015. 2
Table Of Contents
I. 서 론 1
II. 문헌 고찰 3
1. 국내․외 물 부족 현황 3
2. 제주도 용수 공급 현황 4
3. 삼양 3수원의 특성 5
4. 담수화 기술 7
4.1. 담수화 기술의 정의 6
4.2. 염분농도에 따른 물의 분류(TDS기준) 10
4.3. 담수화 공법의 종류 11
4.4. 담수화 전처리 공법 및 특징 25
III. 연구방법 31
1. 연구 대상 35
2. 실험 장치 50
3. 실험 방법 41
IV. 결과 및 고찰 43
1. 파일럿 플랜트 운전결과 43
1.1. 전처리 공정 43
1.2. 담수화 공정 50
1.3. 전처리 공정 경제성 평가 51
2. 경제성 평가 55
2.1. 담수화 공정 도입 경제성 분석 55
2.2. 지하수 개발 경제성 분석 60
2.3. 담수화 공정 도입 타당성 평가 64
V. 결 론 68
참고문헌 69
Degree
Master
Publisher
제주대학교 산업대학원
Citation
김우찬. (2014). 용수공급을 위한 삼양 3수원 담수화 공정에 관한 연구
Type
Dissertation
Appears in Collections:
Graduate School of Industry > Environmental Engineering
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