municipal wastewater operation Articles
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How can better data keep your wastewater plant flowing? - Case Study
Municipal Wastewater Plant (Germany) Did you know: Our Metris addIQ monitoring and control solution allows municipal wastewater operators to access in-depth performance and trend reports, real-time sludge and polymer flow monitoring, long-term process data and more from anywhere, on any device. Optimal sludge flows demand accu rate data – anytime, and anywhere. Which is why ...
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Effect of influent nutrient ratios and temperature on simultaneous phosphorus and nitrogen removal in a step-feed CAST
A step-feed cyclic activated sludge technology (CAST) with a working volume of 72 L treating real municipal wastewater was operated to examine the effect of varying ratios of influent COD/TN and COD/P on the nutrient removal. With the increased COD/P and COD/TN, the phosphorus and nitrogen removals exhibited an upward trend. The TN removals had a positive linear correlation with the phosphorus ...
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Fate of selected pharmaceutically active compounds in the integrated fixed film activated sludge process
The potential for integrated fixed film activated sludge (IFAS) processes to achieve enhanced transformation of pharmaceuticals relative to conventional activated sludge (CAS) processes was assessed. Previous studies have focused on direct comparisons of parallel reactors with and without fixed film carriers and little information is available on the impacts of how varying operating ...
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Pharmaceutical Wastewater Treatment- An Application to Effective Treat Emerging Pharmaceutical Residues in Wastewater through GWT IWRS Process
Pharmaceutical Wastewater Treatment – An Application To Effectively Treat Emerging Pharmaceutical residues in wastewater through specialized electrocoagulation, advanced oxidation and biological processes. Pharmaceuticals have become one of the newly emerging contaminants found in water supplies across the USA and around the world. This is due to the fact that wastewater discharged from ...
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House of commons committee on transport, infrastructure and communities
The Canadian Water and Wastewater Association represents the interests of municipal water and wastewater services in respect to federal or national legislation, policies and programs. More than 24 million Canadians receive drinking water from municipal services and discharge wastewater to those services. The services are provided on a notfor-profit, public service basis. Revenues derived from ...
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Biological nitrogen removal in a step-feed CAST with real-time control treating municipal wastewater
The performance of a 18 L step-feed cyclic activated sludge technology (CAST) combined with real-time control treating real municipal wastewater was evaluated. The operation strategies employed pH and oxidation reduction potential (ORP) as on-line control parameters, which can control the durations of oxic and anoxic phases flexibly. The obtained results showed that the studied process had ...
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AQUA ENVIRO - Final Report - Full ScaleTrials of Recycled Glass as Tertiary Filter Media for Wastewater Treatment. GLA36-010
The report summarises the findings of both pilot-, and full-scale trials comparing the performance of recycled glass and sand as filter medium in tertiary filtration for suspended solids removal during wastewater treatment. The trials were undertaken at three sites: the Malton municipal wastewater treatment plant operated by Yorkshire Water; Stubbins Paper Mill, Ramsbottom, operated by Georgia ...
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Operation of a full-scale pumped flow biofilm reactor (PFBR) under two aeration regimes
A novel technology suitable for centralised and decentralised wastewater treatment has been developed, extensively tested at laboratory-scale, and trialled at a number of sites for populations ranging from 15 to 400 population equivalents (PE). The two-reactor-tank pumped flow biofilm reactor (PFBR) is characterised by: (i) its simple construction; (ii) its ease of operation and maintenance; ...
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Pilot-scale anaerobic submerged membrane bioreactor (AnSMBR) treating municipal wastewater: the fouling phenomenon and long-term operation
An anaerobic submerged membrane bioreactor (AnSMBR) on pilot-scale treating a mixture composed of municipal wastewater and glucose under mesophilic temperature conditions was operated for 206 days. The performance of the AnSMBR was evaluated at different fluxes, biomass concentrations and gas sparging velocities (GSV). GSV was used to control fouling. In addition, the AnSMBR was operated in ...
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Operating costs for reducing total emission loads of key pollutants in municipal wastewater treatment plants in China
Total emission load reduction of COD, NH4-N, TN, and TP is the key measure in controlling water pollution and eutrophication. Municipal wastewater treatment plants (MWWTPs) are major contributors in lowering energy consumption and reducing pollutant discharge. The flow-based operating costs have not been directly established to relate to costs of pollutant reduction based on an investigation of ...
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Comparative analysis of DNA-based microbial community composition and substrate utilisation patterns of activated sludge microorganisms from wastewater treatment plants operated under different conditions
In this study, the microbial community structure and carbon source utilisation profile of activated sludge samples collected from full-scale municipal wastewater treatment plants (WWTPs) operated under different conditions were characterised and compared, respectively, using terminal-restriction fragment length polymorphism (T-RFLP) analysis and Biolog assay. Samples were collected from each ...
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Trace organics removal using three membrane bioreactor configurations: MBR, IFAS-MBR and MBMBR
Seventeen pharmaceutically active compounds and 22 other trace organic pollutants were analysed regularly in the influent and permeate from a semi-real plant treating municipal wastewater. The plant was operated during 29 months with different configurations which basically differed in the type of biomass present in the system. These processes were the integrated fixed-film activated sludge ...
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Lafourche Parish Louisiana Sheriff’s department work release program - Case study
A number of years ago the Lafourche Parish Sheriff’s Department, State of Louisiana, instituted a new program to assist prisoners nearing release to transition back into society. This vehicle requires that inmates pay for their room and board while they learn work skills in industries, such as, shipbuilding, oil field services, food preparation, kitchen management and municipal ...
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Lafouche Parish Work Release WWT Plant
A number of years ago, the Lafourche Parish Sheriff's Department in Louisiana instituted a new program to assist prisoners nearing release to transition back into society. This vehicle requires that inmates pay for their room and board while they learn work skills in industries such as shipbuilding, oil field services, food preparation, kitchen management and municipal water and wastewater ...
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Emerging Technologies for Wastewater Biosolids Management
This guide will help municipal wastewater treatment system owners and operators find information on emerging biosolids management technologies. Featured technologies can be used to reduce the volume of residuals to be managed, produce stabilized biosolids that can be used to help improve soil fertility and tilth, or promote the recovery of energy from biosolids. Technical and cost data for more ...
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An approximate solution for two-dimensional groundwater infiltration in sewer systems
Estimating groundwater infiltration into sewer systems is important for wastewater treatment operators and municipalities. This paper presents an approximate solution for steady-state groundwater infiltration into sewer systems through line defects. The groundwater table was assumed to be horizontal and the aquifer homogeneous and isotropic. Mobius transformation technique and equivalent ...
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How targeted investments by private water can boost public support
A significant number of utilities in smaller regions operating where resources are strained, and where the daily business of water treatment can be exceedingly expensive, have turned to privately owned companies to manage their drinking water and wastewater operations. For municipalities, this provides extensive expertise and economies of scale that they typically couldn’t get on their own. ...
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Thermodynamic analysis and assessment of a municipal wastewater treatment system: a field study on sewage treatment
This paper is a field study on thermodynamic analysis and assessment of an actual municipal wastewater treatment facility. The system operation is described and a methodological approach based on the energy and exergy analyses is provided to assess the performance of a complex wastewater treatment system. Since the specific exergy value of the sludge is increased through treatment process, a new ...
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Ten years of industrial and municipal membrane bioreactor (MBR) systems – lessons from the field
The use of membrane bioreactors (MBRs) in activated sludge wastewater treatment has grown significantly in the last decade. While there is growing awareness and knowledge about the application of MBR technology in municipal wastewater treatment, not much information is available on the application of MBRs in industrial wastewater treatment. A comparative study of design data, operating ...
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Investment and operating costs of municipal wastewater treatment plants in China
The municipal wastewater treatment will continue to be intensified in China due to the economic development and the poor water quality. Within four years, the number of wastewater treatment plants has doubled. Before 2000, mostly plants without nitrogen and phosphorous removal were built. Since Chinese laws require strict effluent qualities, many plants were built with ...
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