비점오염원은 세정에 의해 하수관 내로 유입되어 수계까지 흘러 수계의 오염부하를 가중시킬 뿐만 아니라, 관의 상태에 따라 누수 및 월류를 야기하여 오염을 일으킨다. 이에 따라 하수관거의 유지관리 및 환경오염 방지를 위한 관거내 하수의 유량, 수질, 불명수 및 월류 등을 효율적으로 관리하기 위한 모니터링의 필요성이 증가하고 있다. 그러나 하수관거의 경우, 지하에 설계되며 그 구조 및 연결이 복잡한 특성으로 인해 실제 하수관거에 대한 모니터링은 쉽지 않다. 본 연구에서는 시스템해석이론에 기초한 하수관망 오염제거 해석과 관망 모니터링 및 이상진단방법을 제시하였다. 먼저 하수관망 공정모사 프로그램인 Stormwater & Wastewater Management Model for expert (XP-SWMM)을 이용하여 관망 내의 오염물질의 거동패턴을 해석하였다. 둘째, 다변량 통계 모니터링을 이용하여 하수관망 내의 수질 모니터링 및 하수관망 유출을 탐지하는 관망 이상 진단을 수행하였다. 정적/동적 상태 시스템에 기초한 하수관망 오염 매카니즘 해석결과, 강우시 총질소와 총인 부하량이 비강우시보다 급격하게 증가함을 확인하였으며, 이는 수계의 오염부하를 가중시킬 것으로 판단되다. 이에 따라 하수관망 내 유출은 강우로 생긴 유량 및 유입오염물질의 농도 증가로 인한 관망이상으로 사료된다. 제안된 하수관망 모니터링 및 이상진단 기법은 도시 유역에서의 비점오염원 관리와 지속적인 모니터링에 있어 효과적으로 사용될 수 있을 것으로 예상된다.

Nonpoint source pollution causes leaks and overtopping, depending on the state of the sewer network as well as aggravates the pollution load of the aqueous water system as it is introduced into the sewer by wash-off. According, the need for efficient sewer monitoring system which can manage the sewage flowrate, water quality, inflow/infiltration and overflow has increased for sewer maintenance and the prevention of environmental pollution. However, the sewer monitoring is not easy since the sewer network is built in underground with the complex nature of its structure and connections. Sewer decontamination mechanism as well as pipe network monitoring and fault diagnosis of water network system on system analysis proposed in this study. First, the pollution removal pattern and behavior of contaminants in the sewer pipe network is analyzed by using sewer process simulation program, stormwater & wastewater management model for expert (XP-SWMM). Second, the sewer network fault diagnosis was performed using the multivariate statistical monitoring to monitor water quality in the sewer and detect the sewer leakage and burst. Sewer decontamination mechanism analysis with static and dynamic state system results showed that loads of total nitrogen (TN) and total phosphorous (TP) during rainfall are greatly increased than non-rainfall , which will aggravate the pollution load of the water system. Accordingly, the sewer outflow in pipe network is analyzed due to the increased flow and inflow of pollutant concentration caused by rainfall. The proposed sewer network monitoring and fault diagnosis technique can be used effectively for the nonpoint source pollution management of the urban watershed as well as continuous monitoring system.

Rainfall-Runoff Model Sewer Network Pollution Removal Mechanism Stormwater & Wastewater Management Model(SWMM) Non-point Pollutant Source

Chang M, McBroom MW, Beasley RS, J. Environ. Manage., 73(4), 307 (2004)
Santhi C, Srinivasan R, Arnold JG, Williams JR, Environ. Modell.Softw., 21(8), 1141 (2006)
Park MG, Ahn WS, Kim DS, Oh JM, “Quantitative/Qualitative Analysis of Infiltration/Inflow and Exfiltration on Sewer Pipe,” Daewoo Construction Technology Report 1, 27, 98 (2005)
Kim YS, “Prediction of Water Quality Improvement Effect in Han River with Sewer Rehabilitation,” Chungju university, Master thesis (2005)
Shinheung Concrete, “Standardization of the Concrete Sewage Pipeline System with the Water tightness and Corrosion Resistance for Field Applicability,” Korean Ministry of Environment (2007)
Kim NI, Mary FP, Greg M, Jim C, J. Great Lakes Res., 31, 105 (2005)
Gromaire MC, Garnaud S, Saad M, Chebbo G, Wat. Res., 35(2), 521 (2001)
Guo W, Soibelman L, Garrett JH, Automation in Construction., 18, 587 (2009)
Lee JH, Jun HD, Park MJ, Journal of Korean Society of Hazard Mitigation., 11(3), 229 (2011)
Jung JU, “Application of Urban Flood Model in the Area of Fan-Typed Sewer Network,” Kangwon University, Master thesis, 1 (2011)
Kim JH, Kyonggi University, Master thesis., 139(1-2), 23 (1994)
Park SY, Lee KW, Park IH, Ha SR, Desalination, 226(1-3), 328 (2008)
Lee JY, Jang SH, Park JS, J. Environ. Health Sci., 21(8), 1141 (2008)
Kim DU, “Feature Extraction and Classification of Birdsong Using Kernel Principal Component Analysis and Support Vector Machine,” Kyungpook National University, Master thesis (2010)
Lee MR, “A Study on Deterioration Evaluation Model of Water Main using Integrated PCA and ANN,” University of Seoul, Master thesis, 1 (2010)
Kim Y, Kim M, Lim J, Kim JT, Yoo C, J. Hazard. Mater., 183(1-3), 448 (2010)
Lee YH, Cho HW, Han CH, HWAHAK KONGHAK, 37(3), 402 (1999)
Woo KS, Lee CJ, Han KH, Ko JW, Yoon ES, Korean Chem. Eng. Res., 45(1), 32 (2007)