the ultimate goal of this work was to recommend and install the necessary advanced wastewater treatment facilities to allow southern service company to continue discharging wastewater into st. bernard sewerage district no. 1 sanitary sewer system. as of june 14, 1976, these facilities were installed and fully operational. the resulting waste-water effluent was tested and found to be totally acc...

The quantitative analysis of human urinary metabolites as biomarkers in wastewater streams has been used to estimate the rates of illicit drug use in the wider community. The primary underlying assumption in such studies is that a sample of wastewater is equivalent to a cumulative sample of urine. Drug metabolism in humans is predominantly enzymatically mediated, but these processes are not exc...

MSC is announcing a new business offering based upon a breakthrough technology. MSC has developed a means by which design engineers or occasional CAE software users can reliably perform complex engineering analysis with the same resultant quality as do the dedicated analysis experts. This breakthrough technology captures the expert’s engineering knowledge and specific process solution methodolo...

millions of dollars are being spent worldwide on the repair and maintenance of sewer networks and wastewater treatment plants every year. the production and emission of hydrogen sulfide has been identified as a major cause of corrosion and odor problems in sewer networks. prediction of hydrogen sulfide production in the sewer system helps the engineers and manager to obtain a proper strategy fo...

nowadays deep excavations are needed for construction of foundation of high rise buildings, providing space for parking and etc. in some cases deep excavations may be constructed in the vicinity of the subway tunnels and causes unpredicted extra displacements and internal forces in tunnel lining of tunnels which were not designed for them and consequently affect serviceability of tunnel. theref...

the construction of underground tunnel plays a more and more important role in the development of big cities. one of the most important problems caused by the construction of the tunnel is that underground excavation will cause large settlement of the ground and buildings. previous studied showed the difference between numerical and experimental results. in this study the case study of niyayesh...

In view of various studies looking for the merit of coliphages as indicators of water pollution with viruses originating from faecal material, a small agricultural community (population of approximately 1500 inhabitants of all ages, 2-3 km from Haifa) was selected in order to understand these bacteriophage ecology (F-RNA and somatic coliphages) in its sewer and oxidation pond system. Along the ...

Mission To safely collect and treat wastewater in compliance with all regulatory requirements using state‐of‐the‐ art technology in the most cost‐effective manner in order to improve the environment and enhance the quality of life in Fairfax County. Focus The Wastewater Management Program includes wastewater collection and conveyance, wastewater treatment, and planning and monitoring program a...