도시비점오염물질 유출특성에 적용 가능한 처리시스템 개발에 관한 연구 = Study on the development of system for non-point source treatment suitable for the precipitation characteristics at urban area

다국어 초록 (Multilingual Abstract)

This research was carried out to develop the devices suitable for the runoff characteristics combining different type's devices in one unit in order to efficiently remove non-point source pollutant from CSOs and SSOs in urban area.
This research aimed at development of two devices that can satisfy the following goals.
One is combining vortex type and filter type in one unit. It has to be high efficiency device suitable for early-stage stormwater that was high flux and high concentration.
The other is combining vortex type and screen type in one unit. It has not only to treat high flux, but has to keep the removal efficiency without reduction of vortex efficiency.
In first device, some kinds of laboratory scale treatment unit were designed and made. HDS and HDFS type laboratory scale treatment units were operated to monitor the separating efficiency as per HDS type, hydraulic loading rate, retention time and specific gravity. Also, the separating efficiency per filtering media was tested.
Through these test, FSF (Fluid Separating Filter) type treatment technology as combining HDS and Filtering in the one unit was developed. It's technology could achieve the maximizing the turning velocity by injection of influent to bottom of unit, minimizing of effluent velocity, separating of 100㎛ particle, operating at the condition of over 800m3/m2/d hydraulic loading rate, removal of suspended solids, manless and no-power operation and compact. Also, this unit was simulated and designed by using CFD.
A pilot scale FSF unit was designed, made and operated by using CSOs.. The result of pilot operation was that SS removal efficiency 78.7～91.1%, BOD5 59.4～90.6% and COD 65.3～90.0%. The hydraulic loading rate was 200～3,000m3/m2/d, and the efficiency was static within theses hydraulic loading rate.
In second device, it was conducted that the field test of the pilot plant made on the basis of Lab test. Also this unit was simulated and designed by using CFD for improving the efficiency.
As the result of CFD, three parts were needed, diminished inflow pipe, deflecting part projected outside the screen and plane part on the screen's head.
The test result of improved device was SS removal efficiency 32.4% in hydraulic loading rate 90～360m3/m2․d.
Removal efficiency was stable in low hydraulic loading rate as well as high hydraulic loading rate.
The hydraulic loading rate was 100～5,000m3/m2.

목차 (Table of Contents)

• 목 차
• List of Tables ⅲ
• List of Figures ⅴ
• 제 1 장 서 론 1
• 1.1 연구의 배경 및 목적 1
• 1.2 연구의 범위 4
• 제 2 장 문헌연구 6
• 2.1 국내․외 연구사례 6
• 2.1.1 국내 연구사례 6
• 2.1.2 국외 연구사례 7
• 2.2 비점오염원 관리기술의 종류 및 개요 10
• 2.2.1 구조적 관리기법 13
• 2.2.2 비구조적 관리기법 16
• 2.3 장치형 시설의 종류 및 특성 17
• 제 3 장 실험 방법 및 재료 33
• 3.1 와류형과 여과(Filter) 조합 33
• 3.1.1 Lab. Test 33
• 3.1.2 전산유체역학(CFD) 분석 44
• 3.1.3 최적 처리시스템(FSF) Test 48
• 3.2 와류형과 Screen 조합 54
• 3.2.1 Pilot Test 54
• 3.2.2 전산유체역학(CFD) 분석 56
• 3.2.3 최적 처리시스템(VS) Test 56
• 제 4 장 결과 및 고찰 57
• 4.1 와류형과 여과(Filter) 조합 57
• 4.1.1 Lab. Test 57
• 4.1.2 전산유체역학(CFD) 분석 71
• 4.1.3 최적 처리시스템 구성 76
• 4.1.4 최적 처리시스템(FSF) 운전 78
• 4.2 와류형과 Screen 조합 98
• 4.2.1 Pilot Test 98
• 4.2.2 전산유체역학(CFD) 분석 102
• 4.2.3 Vortex Screen 형 처리시설 구조해석 104
• 4.2.4 최적 처리시스템(VS) 운전 104
• 제 5 장 결 론 106
• 5.1 와류형과 여과(Filter) 조합 106
• 5.2 와류형과 Screen 조합 107
• REFERENCE 109