wastewater treatment screen Articles
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A modelling system for wastewater treatment process evaluation and screening: methodology and case study
Considering nutrient reduction, China's wastewater treatment plants are facing the challenge to upgrade. A modelling system has been developed to screen suitable treatment processes, while statistical methods are not feasible due to data shortage. The system comprises a database to manage different treatment unit technologies, a module to generate candidate processes, a module to simulate ...
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NSW Tannery benefits from highly efficient chrome removal process and a very dry sludge - Case study
NCMC (Northern Cooperative Meat Company) engaged Hydroflux Industrial to design and install a new treatment plant to remove Chrome from wastewater originating from the on site tannery in Casino, NSW. Located on the same site as the abattoir all hides are received immediately after slaughter and put directly into the chrome tanning process. The raw wastewater from the factory contains up to 300 ...
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Characterization of extended spectrum β-lactamase (ESBL)-producing Escherichia coli in Asi (Orontes) River in Turkey
In this study, the presence of extended spectrum β-lactamase (ESBL)-producing Escherichia coli in aquatic environments (the Orontes River and an urban wastewater) was investigated. Fifty-four E. coli strains resistant to cefotaxime were isolated from the river waters and nearby waste water treatment plant and screened for ESBL gene variants, different classes of integrons and sulfonamide ...
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3mm Microbar Screen Louisville, Ohio WWTP - Case Study
The city of Louisville, Ohio installed a 3 mm Or-Tec Blue Whale Microbar Screen in its wastewater treatment plant in November 2018 to screen hair, wipes, plastics and other 'rags' from its influent wastestream. Louisville is a bedroom community with around 10,000 residents and a few light businesses. Its plant is designed to treat up to 6 million gallons of wastewater per ...
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Particle removal in a novel sequential mechanical filter system loaded with blackwater
A novel sequential mechanical filter system was developed as an alternative primary treatment method for onsite wastewater treatment. The filter combines traditional screening with a novel type of counter-flow filter using wood-shavings as a biodegradable filter matrix. This study tested the system in a batch loading regime simulating high frequency toilet flushing using blackwater from a ...
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Screening Influent Treatment Units - Case study
Our customer, a large beef processing plant, required an influent screening solution for their wastewater treatment system. H2Flow provided two externally fed rotary screens for solids removal. The screens are wedgewire style units, with a 0.5mm (20/1000") opening. Installed on an owner supplied elevated platform, the units discharge all screened material directly into a screenings bin below. ...
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Fundamentals and Advantages of Screen Filtration
The “art” of filtration utilizes many methods for separating solid particles from fluids. There is often no right or wrong method. Water quality and customer requirements usually determine the “best” method for each unique situation. Ridged screens, pleated cartridges, string wound cartridges, melt blown cartridges, woven fabrics, non woven fabrics, sintered metals, granular media, frizzy balls ...
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Tortilla Plant
Problem: A major tortilla plant, producer of corn and flour tortillas, tortilla strips and taco shells, was having problems with high levels of contaminants in their wastewater. Their major sources of waste are from their corn cooking operation and from their principal plant clean up performed twice a week. Although minor, boiler blow down and fryer cleaning are also waste sources for this ...
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New screens for the Lisbon wastewater treatment plant - Case study
Portugal's largest wastewater treatment plant for 630,000 PT has been upgraded. Three HUBER ROTAMAT Wedge Sections Screens Ro 2 3000 x 6mm were installed. The WWTP Alcantara treats 42% of the catchment area around Lisbon, Oeiras and Amadora. After mechanical preliminary treatment and pre-clarification the whole wastewater is discharged into the Tagus without prior biological treatment. To ...
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Screening optimisation for indirect potable reuse
An automatic backflush pre-filter used for pre-treatment for secondary wastewater re-use was evaluated and optimised at two different mesh sizes over an 18 month period. The filter was initially run with a 500 μm rating mesh size, as recommended by the supplier of the downstream membrane filtration process, and then at 100 μm to investigate any change in water quality produced and associated ...
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Cold weather ammonia reduction in municipal/industrial treatment plant case study
Problem During cold weather this municipal wastewater treatment plant with a high percentage of industrial flow from food processing and electronics manufacturing suffered from high ammonia loadings. As temperatures dropped the plant lost nitrification. The objective of this full-scale product application program was to reestablish ammonia oxidation and reduce ammonia-nitrogen in the lagoon ...
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Municipal WWTP with MABR Technology on St. Thomas - Case Study
PROJECT DETAILS LOCATION Bordeaux Region, St. Thomas, the U.S. Virgin Islands CUSTOMER The Virgin Islands Waste Management Authority (VIWMA) SOLUTION Wastewater Treatment Plant TECHNOLOGIES Membrane aerated biofilm reactor (MABR) wastewater treatment MABR Technology Implemented at Wastewater Treatment Plant in Bordeaux, St. Thomas, US Virgin IslandsBackground St. Thomas in the U.S. ...
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Florida, USA - Advanced Sequencing Batch Reactor - Case Study
300,000 gpd ASBR facility replaced the existing concrete and steel conventional extended aeration activated sludge treatment, secondary clarifiers, and aerobic sludge digesters. Receives wastewater collected from 14 neighborhoods, residential housing, nursing homes and hospital facilities on a 425 acre site. Wastewater treatment comprises flow metering, fine screening and washing, grit ...
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What Is a Trommel Screen Used for?
Exploring the Versatile Uses of Trommel Screens A Trommel screen also known as a Rotary Trommel Screen is a versatile piece of equipment that is used for a variety of applications across different industries. Its primary purpose is to separate and classify materials based on their size. The design of a trommel screen consists of a cylindrical drum with a rotating screen surface that has holes ...
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Mechanical wastewater pre-treatment for Membrane bioreactors - Case study
When membrane technology solutions appeared on the market for the treatment of municipal wastewater, the requirements on mechanical wastewater treatment systems changed fundamentally. Conventional screens with their bar spacings or perforations of 6 to 10 mm were no longer sufficient for the membrane bioreactors used today. The efficiency of one-dimensional screens such as wedge wire screens, ...
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Case study - Florida, USA – advanced sequencing batch reactor
300,000 gpd ASBR facility replaced the existing concrete and steel conventional extended aeration activated sludge treatment, settlement clarifiers, and aerobic sludge digestors. Receives wastewater collected from 14 neighborhoods, residential housing, nursing homes and hospital facilities on a 425 acre site. Wastewater treatment comprises flow metering, fine screening and washing, grit ...
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Johnson V Wire Screens for Filtration
Johnson wedge wire screens, also known as V wire screen filters or profile wire screens, are indispensable filtration devices widely employed across diverse industrial sectors. These Vee wire screens are designed to effectively separate solid particles from liquids and classify particles based on their size and shape. Their unique construction is characterized by a surface crafted from ...
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How the Olde Atlanta Club Wastewater Treatment Facility solved its debris screening problem - Suwanee, Georgia - Case Study
The Olde Atlanta Club is as genteel as its name implies. The Suwanee, Georgia community boasts pristine golf courses, upscale homes, and plenty of Southern charm. The community is also home to an aging wastewater treatment plant, which had an expensive problem. The plant was protected by the original roto-screen assembly, which did a reasonable job of screening away large debris, but failed to ...
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Control of dangerous substances in discharges and microbiological abatement: European framework and a case study of an ozone disinfection system
Directive 2000/60/EC requires the achievement of a ‘good chemical status’ for surface water within pre-established dates. Disinfection is needed to achieve compulsory final microbial limit values (in Italy for wastewater discharges the parameter Escherichia coli – EC – is imposed by law with a maximum limit value of 5,000 cfu/100 mL). Liquid waste and disinfection ...
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Microbiology: The Key to Wastewater treatment case study
The biological treatment of wastewater relies mainly on a consortium of heterotrophic and autotrophic bacteria. The fecal bacteria that are constantly introduced into the collection system are not the optimal bacteria for degrading the contaminants present in wastewaters. The soil bacteria that are introduced through inflow and infiltration are more effective at degrading the wastes and can ...
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