Real-time monitoring of water quality for sewer system is required for efficient sewer network design because it provides information on the precise loading of pollutant to wastewater treatment facilities and the impact of loading on receiving water. In this study, synchronous fluorescence spectra and its first derivatives were investigated using a number of wastewater samples collected in sewe...

Localized biogenic corrosion and extrication of annoying odors caused by hydrogen sulfide (H2S) have long been a big problem in the management urban sewer systems. H2S emission control sewers via chemically or biologically normal oxidation processes has also investigated extensively is costly. The objective this work was to develop new technology mitigate concentration pipes using conductive co...

The slope of sewer pipes is a major factor for transporting sewage at designed flow rates. However, the gradient inside pipe changes locally various reasons after construction. This causes disturbances requiring investigation and appropriate maintenance. study extracted internal elevation fluctuation from closed-circuit television footage, which required sanitary sewers. principle that change i...

The formation and fate of sulfide in a force main and a downstream-located gravity sewer were investigated in an extensive field study. Sulfide formation in the force main was significant. However, during 14 minutes of transport in the gravity sewer, the sulfide concentration decreased 30%, on average. An application of a conceptual sewer process model for simulating the formation and fate of s...

Assessment of the corrosion condition different types eighty steel-reinforced concrete (SRC) structures Pokhara Valley (Nepal) was carried out in present study using a half-cell potential measurement (HCPM) method without destruction specimens. It is concluded from experimental results that SRC found at dried places areas showed low percentage(i.e., < 10%) risk, while fencing pillars used fo...

The paper describes KURT, an autonomous robot platform prototype that is able to navigate through a network of sewage pipes. KURT is a six-wheeled vehicle; it has modular, layered hardware and control architectures. Its sensor connguration consists mainly of stationary and one exible ultrasound transducers and of two inclinometers. In experiments run in a test sewerage system consisting of conc...

This paper presents an overview of causes of sewer deterioration together with a discussion of control methods that can prevent or arrest this deterioration. In particular, the paper covers inlineand combined sewer overflow(CSO) storage-tank-flushing systems for removal of sediments and minimizing hydrogen sulfide production resulting in the reduction of associated pollution and sewerline corro...

Climate change occasioned by the accumulation of greenhouse gases (GHGs) is now widely accepted as an issue which mankind needs to address. The starting point is necessarily the determination of all the sources of emissions during the life-cycles of the studied components. Post-calculation, the results ought to be presented to decision-makers in a clear manner so as to provide the basis on whic...

The Vallejo Sanitation and Flood Control District is performing CCTV inspections on pipes that do not have a record of such inspections. This effort was triggered by a settlement with Baykeeper, who alleged that broken pipe or pipe about to collapse would remain undetected and lead to sanitary sewer overflows. The actual result of the CCTV inspection turned out to be quite different. Instead of...