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Showing 1 to 20 of 69 for “"Sewers"”.
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Sediment transport in storm sewers
… effect of roughness in the sediment transport in sewers. This model was later tested against experimental data obtained from a test rig. The rig had a pipe which was specially fabricated in two halves so that it could be divided to coat the interior with uniform sand grains to provide roughness. …
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The ventilation and flushing of sewers
Made available in DSpace on 2016-11-09T23:47:47Z (GMT). No. of bitstreams: 2 5958726_opt.pdf: 6517603 bytes, checksum: 61e150c197d1aa68683acba394a79f6b (MD5) license.txt: 4183 bytes, checksum: 1dcc2037833d76bede73d5717587543b (MD5) Previous issue date: 1897
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Treatment of overflows from combined sewers
Introduction: Automation and the danger of over productivity have created unprecedented amounts of leisure time in the United States. We are now in the process of finding that major potential recreational areas have been seriously polluted by the by-products of the same automation and productivity …
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Aesthetic pollutant loadings in upstream combined sewers.
… that aesthetic pollutants are stored in upstream sewers and private drainage connections during the dry weather period prior to a storm occurring. These pollutants and those within the flow in dry weather are transported out of the sewer at the start of the storm as part of a first foul flush. …
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Odor control in sewers using calcium nitrate
Wastewater often creates nuisance odors. Effectiveness of Calcium Nitrate (trade name Bioxide) to control odors was investigated in the collection system of Clark County Sanitation District over a three month period in the summer of 1993. Bioxide feed stations were set up on the nine sewer lines …
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Near bed solids transport in combined sewers
… the problems associated with sediments in sewers, and their transport through these systems, has given rise to concerted research programmes in the U.K., and further afield. A collaborative research project was initiated in collaboration with the University of Newcastle upon Tyne, the …
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Tractive-Force Distribution in Sewers and Channels
Made available in DSpace on 2014-12-08T23:56:09Z (GMT). No. of bitstreams: 1 6408430.pdf: 9519970 bytes, checksum: d148eb1b844e6d2554056e1dd4beba1b (MD5) Previous issue date: 1964
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The flow of water in pipe sewers
Made available in DSpace on 2017-11-30T22:46:23Z (GMT). No. of bitstreams: 2 5959305.pdf: 4898044 bytes, checksum: 3775712071969e25d52824fed3bc51ad (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1899
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Leaping weirs and overflow weirs for sewers
Made available in DSpace on 2017-11-30T22:11:17Z (GMT). No. of bitstreams: 2 5995007.pdf: 12391999 bytes, checksum: e902d21192974d8455c5ae2e2e504ab4 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1917
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Development and analysis of computer aided design and drafting software for storm sewers
A software package has been developed for the IBM personal computer that aids engineers in storm sewer design and drafting. The most unique feature of this software package is its extensive use of the AutoCAD graphics system. The software package uses AutoCAD to enter storm sewer data. Drainage …
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A three-dimensional two-phase model for flow, transport and mass transfer processes in sewers
… of rainwater from residential areas. Damages to sewers cause infiltration and exfiltration and at the same time high costs for rehabilitation. The formation of hydrogen sulphide (H2S) represents a risk factor for the conditions of concrete channels. Its emission cannot only cause the destruction …
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An investigation of leaky sewers as a source of fecal contamination in the stormwater drainage system in Singapore
A preliminary investigation was conducted into possible pathways for fecal contamination to enter stormwater drains from leaky underground sewer lines in Singapore. The island's drainage channels flow into catchment reservoirs that are used to store water for future supply needs. Singapore's Public …
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The Impact of Rochester Storm Sewers on the Water Quality of the Lower Genesee River: A Modeling Approach Using PCSWMM
… due to industrial and municipal sources, storm sewers, and urban runoff. In urban areas, nonpoint source pollution from stormwater runoff is known to be a dominant factor in water quality. An assessment of the lower Genesee River was initiated to determine impacts from the canal, storm sewers, …
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Performance of geopolymer concrete subjected to mineral acid corrosion and related to microbially-induced corrosion (MIC) of concrete in sewers
worse than degradation at the crown of the sewer pipe. Furthermore, results from this study show that high resistance under the static acid corrosion exposure condition cannot be extended to mean high resistance under the erosion-corrosion exposure condition for some concrete mixes. In this study, …
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Solid transport in combined sewerage systems
… caused by the deposition of sediments in sewers, and by the transport of solids through and from sewer systems has given rise to a great deal of research both in the UK and internationally. A collaborative research effort has been initiated by the Water Research Centre (WRc) under the …
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Composition and microstructure of concrete mixtures subjected to biogenic acid corrosion and their role in corrosion prediction of concrete outfall sewers
… and treatment facilities, which include outfall sewers, manholes, and treatment works, are among the key constituents of a country's infrastructure. Most of these facilities are made of concrete due to its low production costs, versatility, inherent strength and durability under most conditions. …
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Beitrag zur Verbesserung der Reinigung von Abwasserkanälen
In Germany the cleaning of sewers takes place predominantly with the high pressure cleaning (jetting). Since the beginnings of the jetting 50 years ago the machine and instrument technique of this procedure was improved significantly. On the other hand operating strategies changed hardly until …
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An analysis of spatial and temporal variation in fecal indicator concentrations in Singapore
… all indicators but total coliform, that older sewers had a significantly higher indicator concentration than newer sewers. This suggests that sewer leakage likely contributes to fecal contamination. Leaking sewers can explain some of the high indicator concentrations, but lack of diurnal …
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The development of an ancillary textile industry waste treatment process
… Cape Town Municipality before discharge to the sewers. A certain measure of pretreatment before discharge to the sewers was therefore required. The treatment process eventually selected consists of neutralization; flocculation; sedimentation; sand filtration of the sludge; and atmospheric drying …
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Reduzierung von Fremdwasser bei der Abwasserentsorgung
… over leakages in public and/or private sewers and drain pipes as well as the rainfall induced inflow into sanitary sewers. It leads to an additional hydraulic charge, a reduced efficiency of wastewater treatment plants and thus to a higher pollution of water bodies and an increase of …
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