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제주도 소규모 하수처리시설의 대규모 하수처리시설 연계에 따른 타당성 검토

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Author(s)
공경일
Issued Date
2014
URI
http://dcoll.jejunu.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000006724
Abstract
Most of the small-sized sewage processing facilities in countryside of Jeju
are located in mid-mountain areas and the facilities are getting old. As a
result, sewage has been discharged to dry streams or ground. It has caused
underground water pollution and its second-hand contamination. And nasty
smell has been frequently reported by locals. The related organizations are
making efforts to solve the problem but their measures were not fundamental.
Therefore, the offices are planning to close down the small-sized sewage
treatment plants and combine them with large-scaled facilities.
This study examines the feasibility of connecting sewage treatment
facilities. To compare the cost between keeping both of the small and
large-sized plants as it currently is and running combined plants, the
operation cost of existing facilities is calculated and the construction cost for
combining small ones with bigger plants and operation expense of combined
ones is also calculated.
To examine the feasibility of the combining sewage treatment facilities,
seven small-sized sewage processing plants in mid-mountain area of Jeju-si
are chosen among 57 plants on Jeju island. The running cost is calculated in
the case of combining the seven plants with two big plants.
Firstly, the operation cost of existing facilities is calculated. But, the real
expense can not be used for the study because the cost is limited to the
fixed budget in reality. Therefore, the operation cost for small and large-sized
sewage treatment plants is calculated theoretically through researching books.
From it, the operation cost of small facilities is calculated through the
arithmetical mean of three functional formulas and that of large facilities is
calculated through the arithmetical mean of four functional formulas.
The two big plants are based on Sequential Batch Reactor technologypopularly known as SBR technology for the treatment of sewage. To assess
the running cost of them, the functional formula for maintenance cost of SBR
technology is used.
Each plant's maintenance cost is revised by the producer price index of
2013. Three percent, the average rate of inflation for last ten years, is applied
for estimating future cost.
The construction cost to connect sewer pipes is calculated and used for
comparing and analyzing economic feasibility.
The feasibility study shows a big burden in 2014 because sewer pipe
connecting construction. But it is found that the maintenance cost will be
decreased year by year, and it is expected to be economically feasible from
2071. It is analyzed that 10 billion Korean won will be saved in the year of
2100.
Sewer pipe connecting construction is expected to cut operating expenses in
the end and solve existing problems like non-sewage inflow from
pipe-to-pipe's open joints, low concentration sewage inflow and wrongly
measured operation capacity. Also it will contribute image improvement of
Jeju for its clean environment.
Alternative Title
Feasibility Study on Connecting Smallscale Sewage Treatment Plant to Largescale
Department
산업대학원 건설환경공학과
Awarded Date
2014. 8
Table Of Contents
Ⅰ.서 론 1
1.1 연구배경 및 목적 1
1) 연구 배경 1
2) 연구 목적 1
1.2 연구 범위와 방법 2
1) 연구 범위 2
2) 연구 방법 2
Ⅱ. 소규모 하수처리 시설연계에 관한 기존 연구 동향 4
Ⅲ.제주도 하수처리시설 현황 6
3.1 소규모하수도의 개념 6
1) 소규모 하수도의 개념 6
3.2 제주도 소규모 하수처리시설 및 운영 현황 7
1) 제주도 소규모 하수처리시설 현황 7
2) 제주도 소규모하수처리시설 운영현황 10
3.3 제주도 소규모 하수처리시설의 문제점 12
1) 법체제의 문제점 12
2) 처리시설의 문제점 13
3) 주변 환경의 문제점 14
3.4 제주도 소규모 하수처리시설의 향후전망:대규모와 연계 15
3.5 공공하수처리시설과 연계처리 계획 16
1) 연계처리 기준설정 16
2) 연계처리 계획 16
Ⅳ.제주도 하수처리시설의 대규모화 타당성 분석 19
4.1 규모별 하수처리시설 유지관리비 분석 19
1) 기존 14개의 함수식 분석 19
2) 소규모 하수처리시설 비용분석을 위한 함수식 검토 20
4.2 소규모 하수처리시설 운영비용(제주시 7개소) 38
4.3 대규모 하수처리시설 운영비용(제주시 2개소) 41
4.4 연계에 따른 장점 및 단점 42
1) 연계에 따른 장점 42
2) 연계에 따른 단점 42
4.5 연계 타당성 비교 및 정책검토 43
1) 연계시 공사비 산출 43
2) 하수관거 신설공사비 산출근거(1km당) 43
3) 거리에 따른 7개소 공사비 총액 46
Ⅴ. 결 론 48
Ⅵ. 참고문헌 50
Ⅶ. 부 록 51
Degree
Master
Publisher
제주대학교 산업대학원
Citation
공경일. (2014). 제주도 소규모 하수처리시설의 대규모 하수처리시설 연계에 따른 타당성 검토
Type
Dissertation
Appears in Collections:
Graduate School of Industry > Environmental Engineering
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