The high pollution load in wastewater at the beginning of a rain event is commonly known to originate from the erosion of sewer sediments due to the increased flow rate under storm weather conditions. It is essential to characterize the biodegradability of organic matter during a storm event in order to quantify the effect it can have further downstream to the receiving water via discharges fro...

This paper presents an approach that integrates a legacy component into a software system for storm sewer simulation. The legacy component employed here is the Storm Water Management Model (SWMM). The Extended Transport (EXTRAN) block of the SWMM that applies the finite difference method (FDM) with explicit numerical schemes, solving the de Saint-Venant equations, is used to route the storm sew...

Combined sewer systems are designed to transport stormwater surface runoff in addition to the dry weather flows up to defined limits. In most European countries, hydraulic loads greater than the design flow of wastewater treatment plants are discharged directly into the receiving water bodies with minimal treatment (screening, sedimentation) or with no treatment at all. One feasible solution to...

Sewer outlets from buildings in a harsh climate are considered one of the main elements sewer network, determining its reliability and efficiency. The article considers change temperature wastewater at laid reduced depth frozen ground. Methods: purpose this study was to determine city Kyzyl during day winter. Result: New experimental data on presented summarized. range building has been determi...

Optimal sewer design aims to minimize capital investment on infrastructure whilst ensuring a good system performance under specific design criteria. One of the state-of-the-art optimization techniques for this problem is the Genetic Algorithm (GA), which is commonly combined with a sewer hydraulic simulator during the optimization. However, this approach can be prohibitively time-consuming espe...

Methane is a highly potent greenhouse gas and contributes significantly to climate change. Recent studies have shown significant methane production in sewers. The studies conducted so far have relied on manual sampling followed by off-line laboratory-based chromatography analysis. These methods are labor-intensive when measuring methane emissions from a large number of sewers, and do not captur...

At present, many metropolitan sewer systems do not meet existing and proposed standards on water pollution. Existing systems were designed to overflow at prescribed locations in order to protect the sewage treatment plants whenever severe overload conditions exist (usually during storms). This discharge of untreated overflows into natural receiving waters is of growing concern to water pollutio...

The gradual growth of the use of radionuclides in nuclear medicine, since the decade of 70, and the consequent increase of liquid radioactive discharges for the urban sewer network, brought the necessity of revise the current maximum values for release of radioactive material in sewage systems, and to develop regulation to ensure the protection of man and the environment. According to the IAEAI...

Limnimeter and Rain Gauge FDI in Sewer Networks 1 using an Interval Parity Equations based Detection Approach 2 and an Enhanced Isolation Scheme 3 4 Vicenç Puig, Joaquim Blesa 5  6 Advanced Control Systems Group (SAC), Institute of Robotics and Industrial Informatics (IRI-CSIC) ,Universitat 7 Politècnica de Catalunya (UPC), Pau Gargallo, 5 ,08028 Barcelona, Spain 8 (e-mail: [email protected]...

Suburban areas are subject to strong anthropogenic modifications, which can influence hydrological processes. Sewer systems, ditches, sewer overflow devices and retention basins are introduced and large surface areas are sealed off. The knowledge of accurate flow paths and watershed boundaries in these suburban areas is important for storm water management, hydrological modelling and hydrologic...