Analyse du réseau d'égouttage des eaux usées de Louvain-la-Neuve

Details

Supervisors

Soares Frazao, Sandra

Faculty

Ecole polytechnique de Louvain

Degree label

Master [120] : ingénieur civil des constructions, à finalité spécialisée

Abstract

enRainfall-derived infiltration and inflow in separate sanitary sewer system has long been a recognized problem. These are the result from ageing installations in the urban environment and illicit connections from roof leaders, house drains between the stormwater sewers and the sanitary network. Groundwater infiltration enters the network through cracks or dislocated pipe joints. This infiltration depends on the height of the water table, causing seasonal variation in the water supply. It results in a slight increase of the instantaneous flow in the pipe over a long period. Inflows, on the other hand, enter the network through illicit connections. This can cause a significant increase of the instantaneous flow over a shorter period. These infiltrations and inflow have economic, ecological, and human consequences. Louvain-la-Neuve and its separate sanitary sewer system are no exception, and the presence of inflows in the sanitary sewer has been noted. The aim of this report is to determine the areas of illicit connection in the network by modelling it using Storm Water Management Model software. It also discusses the various assumptions made during the modelling process and their impact on the results obtained. Finally, the report details the field tests carried out, uncovering illicit connections.