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제주도 유수하천의 수질특성과 하천유역별 상관성 분석

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Alternative Title
Analysis of the Correlation between the Characteristics of Water Quality of the Flowing Streams and River Basins in Jeju Island
Abstract
The purpose of this study is to analyse the correlation between the characteristics of the water quality of the flowing streams and water pollutants found in each river basin, to find the source of the generated pollutants, and to investigate them for each river basin by studying their point pollutants and non-point pollutants. The study was conducted with 12 flowing streams(3 in Jeju-si and 9 in Seogwipo-si) in total in Jeju Province through field investigation in May, August, October, and December respectively by season. As for specific investigation sites, the study was carried out in the lower streams of each river; in order to compute flow rate, flow velocity was measured at the same time. On the basis of this data, to evaluate the flow rate of each separate river, flow velocity was multiplied by a cross sectional area. To estimate point pollutant loads, flow rate was multiplied by water concentration. To evaluate non-point pollutants flowing from unspecified routes, the non-point pollutant unit, classified into six areas (like fields, forests, commercial areas, manufacturing areas, and roads) was multiplied by land-use area. Furthermore, using the statistical program SPSS(statistical package for social science), correlation analysis was implemented so as to see if there are correlations between variables of water pollutant items. The study verified pollutant trends by drawing a scatter diagram on an x·y axises. The findings are as follows.
As a result of checking the quality of water, the water temperature (℃) ranged from 8.1 to 29.8℃, hydrogen ion concentration(pH) 7.1 to 8.7, dissolved oxygen(DO) 7.0 to 14.9 mg/L, electrical conductivity(㎲/㎝) 48.8 to 552.7 ㎲/㎝, Total Dissolved Solids(TDS) 23.0 to 245.3 mg/L, biochemical oxygen demand(BOD) 0.1 to 2.1 mg/L, chemical oxygen demand(COD) 0.1 to 1.9 mg/L, suspended solids(SS) 0.005 to 4.2 mg/L, Total Phosphorus(T-P) 0.002 to 0.3 mg/L, In regards to the result of calculating point pollutants, nine rivers were investigated(the three excluded rivers were Sanjicheon, Daewangsucheon, and Hyodoncheon which had no findings on flow data for the cross-sectional diagram). BOD loads ranged from 0.21 to 36.94 kg/day, COD 0.09 to 37.80 kg/day, SS 0.01 to 48.34 kg/day, T-P 0.002 to 10.01 kg/day.
In terms of pollutant concentration types for each flowing stream, they showed different rises and declines depending on the change of flow rate, it is likely that the result was affected by flow rate. As a result of computing non-point pollutants, BOD ranged from 20.1 to 64.1 kg/day, COD 57.5 to 162.6 kg/day, SS 176.7 to 617.7 kg/day, T-P 2.0 to 11.4 kg/day. Due to the lack of data from the result of this study for correlation analysis with the statistical program SPSS, the analysis was implemented by combining this minimal data with extra data provided by the Public Health & Environment. Research Institute of Jeju Special Self-Governing island together. The result was that Yeonoicheon showed a correlation between COD-SS with 0.540, in the case of Donghongcheon, BOD-SS was 0.803, and COD -T-P was 0.640, which showed a very high correlation coefficient. Moreover, the study showed that significance probability remained within five percent.
Both Yeonoicheon and Donghongcheon turned out to have correlations between COD-SS, BOD-SS, and COD-T-P as a whole. Pollutants seemed to be generated by suspended solids flowing mainly from forests and fields.
Author(s)
현범석
Issued Date
2014
Awarded Date
2015. 2
Type
Dissertation
URI
http://dcoll.jejunu.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000007053
Alternative Author(s)
Beom-Seok Hyun
Department
대학원 환경공학과
Table Of Contents
Ⅰ. 서론 1

Ⅱ. 이론적 배경 3
1. 점오염원 3
2. 비점오염원 4
3. SPSS(Statistical Package for the Social Sciences) 7

Ⅲ. 연구대상 및 방법 8
1. 연구대상 지역 8
2. 하천 현장조사 14
3. 오염원 산정 17
3.1. 점오염원 산정 17
3.2. 비점오염원 산정 18
4. SPSS를 이용한 상관관계 분석 25
4.1. 상관관계 분석 25
4.2. 상관관계 분석 목적 26

Ⅲ. 연구 결과 및 고찰 27
1. 각 하천별 수질조사 27
1.1. 수온 27
1.2. 수소이온농도(pH) 30
1.3. 용존산소(DO) 31
1.4. 전기전도도(EC) 32
1.5. 총용존고형물(TDS) 33
1.6. 생물학적산소요구량(BOD) 34
1.7. 화학적산소요구량(COD) 35
1.8. 부유물질(SS) 36
1.9. 총인(T-P) 37
2. 오염원 산정 결과 38
2.1. 점오염원 산정 결과 38
2.2. 비점오염원 산정 결과 47
2.3. 하천별 오염부하량 산정 53
3. SPSS를 이용한 상관관계 분석 결과 58
3.1. 상관성 분석 58
3.2. 상관관계 분석 및 산점도(Scatter diagram) 63
3.3. 유수하천의 수질특성과 오염항목 간의 상관관계 분석 70

Ⅳ. 결 론 71

참고문헌 74
Degree
Master
Publisher
제주대학교 대학원
Citation
현범석. (2014). 제주도 유수하천의 수질특성과 하천유역별 상관성 분석
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General Graduate School > Environmental Engineering
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