This paper deals with the global control of the Riera Blanca catchment in the Barcelona sewer network using a predictive optimal control approach. This catchment has been modelled using a conceptual modelling approach based on decomposing the catchments in subcatchments and representing them as virtual tanks. This conceptual modelling approach allows real-time model calibration and control of t...

Biogenic corrosion of sewers represents a cost of about 10% of total sewage treatment cost in Flanders (Belgium) and is further increasing. In the past, research has resulted in a number of prevention methods, such as injection of air, oxygen, H(2)O(2), NaClO, FeCl(3) and FeSO(4). The possibility of biological oxidation of sulfide using nitrate as the electron acceptor has also been explored in...

OBJECTIVES Sewer workers are used to unpleasant smells, but may be required to investigate unusual ones. Twenty six men were involved in investigation of episodes of such a smell after neighbourhood complaints over several weeks. METHODS Workers exposed to the smell were investigated by clinical follow up, lung function tests, and measurement of pituitary function. RESULTS 14 of the 26 deve...

Stratified Microbial Structure and Activity in Sulfideand 1 MethaneProducing Anaerobic Sewer Biofilms 2 3 Jing Sun, Shihu Hu, Keshab Raj Sharma, Bing-Jie Ni, Zhiguo Yuan* 4 5 1 Advanced Water Management Center, The University of Queensland, St. Lucia, 4072, 6 Queensland, Australia; 7 2 CRC for Water Sensitive Cities, PO Box 8000, Clayton, Victoria, 3800, Australia 8 9 *Corresponding author 10 E...

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...