Ⅰ. 연구개요 ········································································································3 1. 연구배경 및 목적 ·······················································································3 2. 연구의 범위 ································································································4 3. 연구내용 및 방법 ······················································································5 1) 연구내용 ································································································5 2) 연구방법 ·······························································································5 4. 연구체계 ·····································································································6 Ⅱ. 부산의 물순환 체계 분석 ·······································································9 1. 물순환 체계 분석의 필요성 ·····································································9 2. 물순환 분석 모델 ····················································································10 1) 물순환 모델의 선정 ···········································································10 2) Aquacycle 모델의 개요 ····································································11 3. 물순환 체계 분석 ····················································································12 1) 온천천 유역 검증 결과 ·····································································13 2) 부산시 물순환 체계 분석 ·································································17 3) 수영강 수계 물순환 체계 분석 ························································21 Ⅲ. 물순환 방안에 관한 고찰 ·····································································25 1. 주요 물순환 방안 ····················································································25 1) 개요 ·····································································································25 2) 물순환 방안의 특징 ··········································································25 2. 물순환 방안의 경제성 평가 ···································································31 1) 개요 ······································································································31 2) 주요 물순환 방안별 경제성 평가 ···················································32 Ⅳ. 부산시 물순환 시설의 여건과 진단 ··················································45 1. 부산시 물순환 시설 개요 ·······································································45 2. 부산시 물순환 시설 현황과 과제 ·························································46 1) 중수도 ·································································································46 2) 빗물이용시설 ······················································································47 3) 하수처리수 재이용 현황 ···································································48 3. 정책여건 ···································································································48 1) 관련 법률 및 계획 검토 ···································································48 4. 종합평가 ···································································································52 Ⅴ. 수영강 수계 물순환 촉진 대책 ···························································57 1. 수영강 유역의 특성 ·················································································57 1) 유역 특성 ····························································································57 2) 물순환 분석 ·······················································································59 3) 수영강 유역의 건전한 물순환을 위한 정책방향 ···························60 2. 물순환 촉진 사업 제안 ···········································································61 1) 빗물이용시설 확대 방안 ···································································61 2) 하수처리수 재이용 방안 ···································································69 Ⅵ. 결론 및 정책제언 ·····················································································73 1. 결론 ···········································································································73 2. 정책제언 ···································································································74 참고문헌 ··············································································································75 부록 ·······················································································································79

<표 Ⅱ-1> 물순환 분석 모델 비교 10 <표 Ⅱ-2> 온천천 유역 토지피복별 면적 13 <표 Ⅱ-3> 모델 입력 자료 15 <표 Ⅱ-4> 모델에 적용된 매개변수 16 <표 Ⅱ-5> Aquacycle의 매개변수 산정 결과 16 <표 Ⅱ-6> 부산지역 물순환 체계 분석을 위한 입력 변수와 매개변수 18 <표 Ⅱ-7> 클러스터별 토지이용 특성 비교 19 <표 Ⅱ-8> 부산지역 물순환 체계 분석 결과 21 <표 Ⅲ-1> 빗물의 주요 이용용도 및 기능 26 <표 Ⅲ-2> 도시에서의 빗물저류·침투 시설 예상 효과 27 <표 Ⅲ-3> 접촉 가능성에 의한 적용할 수 있는 중수도 이용용도의 구분 28 <표 Ⅲ-4> 중수도의 수질기준 29 <표 Ⅲ-5> 하수처리수의 수자원이용의 의의 30 <표 Ⅲ-6> 하수처리수의 재이용 가능 범위와 용도별 요구조건 30 <표 Ⅲ-7> 미국에서의 하수처리수 재이용 용도와 제한인자 31 <표 Ⅲ-8> 빗물이용시설의 설치비용 산출근거 33 <표 Ⅲ-9> G사 견적서를 기초로 한 빗물이용시설 설치 비용 33 <표 Ⅲ-10> G사 견적서를 기초로 한 빗물이용시설의 연간 유지관리비 34 <표 Ⅲ-11> G사 견적서를 기초로 한 빗물이용시설의 총 비용 34 <표 Ⅲ-12> 빗물저류시설의 건설비 산정 항목 37 <표 Ⅲ-13> 빗물저류시설의 용량별 건설비 37 <표 Ⅲ-14> 빗물저류시설의 설치에 따른 편익산정 38 <표 Ⅲ-15> 중수도의 비용항목 39 <표 Ⅲ-16> 중수도의 비용 39 <표 Ⅲ-17> 중수도의 편익항목 40 <표 Ⅲ-18> 중수도 처리방식별 비용과 편익 분석 40 <표 Ⅳ-1> 부산지역 중수도시설 이용 현황 47 <표 Ⅳ-2> 빗물이용시설 현황 47 <표 Ⅳ-3> 물의 재이용촉진 및 지원에 관한 법률의 주요내용 49 <표 Ⅳ-4> 하수처리수 재이용수질 권고기준 50 <표 Ⅴ-1> 수영강의 하천개황 58 <표 Ⅴ-2> 수영강 유역 물순환 체계 분석 결과 59 <표 Ⅴ-3> 수영강의 하천유황 60 <표 Ⅴ-4> 부산지역 물탱크 시설 현황 62 <표 Ⅴ-5> 부산지역 오수처리시설 현황 63 <표 Ⅴ-6> 산지호수공원 입지예정지 현황 분석 및 설계인자 68 <표 부록-1> 대상구역의 유역현황 79 <표 부록-2> 행정구역별 유역현황 79 <표 부록-3> 온천천 유역 토지피복별 면적 80 <표 부록-4> 우리나라에 도달하는 태양방사열량 82 <표 부록-5> 온천천에 도달하는 태양방사열량 83 <표 부록-6> 위도별 최대가능 일조시간 83 <표 부록-7> 온천천에 도달하는 최대가능 일조시간 추정치 83 <표 부록-8> 매개변수 검증을 통해 결정된 매개변수 98 <표 부록-9> Aquacycle의 매개변수 산정 결과 99

<그림 Ⅰ-1> 연구의 공간적 범위 4 <그림 Ⅱ-1> 도시지역의 물순환 체계 9 <그림 Ⅱ-2> Aquacycle 모델의 구조 12 <그림 Ⅱ-3> 온천천 유역 현황 14 <그림 Ⅱ-4> 부산지역 물순환 체계 분석 대상지역 17 <그림 Ⅱ-5> 부산지역 물순환 체계 분석 결과 20 <그림 Ⅱ-6> 수영만의 물순환 체계 분석 결과 22 <그림 Ⅲ-1> 빗물이용에 따른 비용과 사회적 편익 36 <그림 Ⅲ-2> 하수처리수 재이용에 대한 경제효과 41 <그림 Ⅳ-1> 물순환 방안 46 <그림 Ⅴ-1> 수영강 유역도 57 <그림 Ⅴ-2> 수영강 유역 토지피복도 58 <그림 Ⅴ-3> 수영강 월별 유출량 60 <그림 Ⅴ-4> 수영강 최심하상고 60 <그림 Ⅴ-5> 옥상물탱크 시설의 빗물 재이용시설 활용방안 62 <그림 Ⅴ-6> 오수처리장의 빗물 재이용시설 활용방안 64 <그림 Ⅴ-7> 산지호수공원 조성 및 소규모 물길조성 사례 65 <그림 Ⅴ-8> 산지호수공원 조성 후보지 66 <그림 Ⅴ-9> 석대산업단지 하수처리수 재이용수 공급망 69 <그림 부록-1> 온천천 유역 현황 81