표제지
목차
Abstract 6
Ⅰ. 서론 7
Ⅱ. 연구내용 및 방법 9
1. 관거정비와 관거이송 변화 9
2. 관거이송 유량 및 수질특성 분석 10
3. 관거정비지역 삭감량 산정식 작성 12
Ⅲ. 연구결과 및 고찰 13
1. 관거정비 실태 및 오염물질 배출조건 변화 13
가. 관거정비 실태 13
나. 오염물질 배출조건 변화 15
2. 관거정비 전후의 관거이송 유량 및 수질특성 16
가. 관거정비 전후의 유량 및 수질패턴 변화 16
나. 관거정비 전후의 유량 및 수질농도 변화 19
다. 관거정비 전후의 유량 및 수질특성 비교 21
3. 관거정비지역 삭감량 산정식 23
가. 기존관거 정비단계 삭감량 산정식 23
(1) 삭감량 산정절차 23
(2) 삭감량 산정식 24
나. 신규관거 추가단계 삭감량 산정식 28
(1) 삭감량 산정절차 28
(2) 삭감량 산정식 29
4. 삭감량 산정식 적용 및 평가 30
가. 실제 배출조건 하의 배출부하량 30
나. 관거정비에 따른 삭감량 32
(1) 기존관거 정비단계 삭감량 32
(2) 신규관거 추가단계 삭감량 34
다. 삭감량 산정식 적용결과 평가 35
Ⅳ. 결론 37
참고문헌 40
〈Table 1〉 The outline of BTL sewer rehabilitation project in the study area 11
〈Table 2〉 The comparison of the predicted and observed sewer flow changes after sewer rehabilitation project in three study areas 22
〈Table 3〉 The number of population by the sewer type before and after sewer rehabilitation 30
〈Table 4〉 The area of building site by the sewer type before and after sewer rehabilitation 30
〈Table 5〉 Rainfall conditions before and after sewer rehabilitation 31
〈Table 6〉 The discharge load appeared in the year before and after sewer rehabilitation in three study areas 31
〈Table 7〉 Correction Equation for the sewer transfer flow of the rainy season 32
〈Table 8〉 The comparison of the appeared and converted discharge load 33
〈Table 9〉 Reduction load by the consequence of sewer rehabilitation in existing sewer system 34
〈Table 10〉 The converted discharge load for the year before and after sewer rehabilitation in the newly sewer added area 34
〈Table 11〉 Reduction load by the consequence of sewer rehabilitation in the newly sewer added area 35
〈Table 12〉 The comparison of reduction load between the existing method and this study 36
〈Figure 1〉 Mass transfer path in combined sewer system 9
〈Figure 2〉 Pollution reduction process with sewer rehabilitation 10
〈Figure 3〉 The unit watershed and sewerage zone of study area 11
〈Figure 4〉 Changes in sewerage zone and sewer pipe length of study area 13
〈Figure 5〉 The change of sewer system in the sewerage rehabilitation area 15
〈Figure 6〉 Changes in water pollution sources and rainfall conditions 16
〈Figure 7〉 Patterns of the sewer flow and its BOD concentration in S1 area before and after sewer rehabilitation project 17
〈Figure 8〉 Patterns of the sewer flow and its BOD concentration in S2 area before and after sewer rehabilitation project 18
〈Figure 9〉 Patterns of the sewer flow and its BOD concentration in S3 area before and after sewer rehabilitation project 18
〈Figure 10〉 The comparison of the sewer flow and its BOD concentration in S1 area before and after sewer rehabilitation project 19
〈Figure 11〉 The comparison of the sewer flow and its BOD concentration in S2 area before and after sewer rehabilitation project 20
〈Figure 12〉 The comparison of the sewer flow and its BOD concentration in S3 area before and after sewer rehabilitation project 21
〈Figure 13〉 The procedure for the calculation of reduction load with sewer rehabilitation in existing sewer system 24
〈Figure 14〉 The procedure for the calculation of reduction load with sewer 28