Water Screens Articles

  • Gettysburg hospital addresses ailing evaporative coolers

    WellSpan Gettysburg Hospital was looking to modernize mechanical systems to ensure reliability of critical patient-care functions. Constructed in 1921, WellSpan Gettysburg Hospital in Gettysburg, Pa., has undergone a number of changes over the years. According to Joe Lehigh of the facility’s engineering team, the most recent were made chiefly to improve hospital operations. “The key ...


    By Evapco Inc.

  • NFPA 820 Compliance in Wastewater Treatment Plants

    Wastewater treatment plants are essential structures in cities and small communities. Such facilities are closely monitored by several professional institutions, such as OSHA and the NFPA. When it comes to the latter group, guidelines set forth in NFPA 820 are regulations that dictate fire hazards in such facilities. Fire related accidents in wastewater treatment facilities are uncommon. However, ...


    By Larson Electronics LLC

  • Hot weather on its way ... Check the condition of your cooling tower

    The approach of summer is a good time to check the performance and, more importantly, the physical condition of your cooling towers. After all, it’s easier to repair a tower when weather conditions don’t put a strain on its cooling capacity. A cooling tower passes air over tiny droplets or the exposed surface of a water film. In both cases, a small amount of water is vaporized, ...


    By Evapco Inc.

  • Screening of organic pollutants in urban wastewater treatment plants and corresponding receiving waters

    There is a lack of knowledge in environmental pollution of the anthropogenic contaminants in wastewater and surface water. Several organic compounds merit special attention, because of their potential risk to the aquatic environment. Therefore, gas chromatography–mass spectrometry-based screening analyses were performed in order to identify anthropogenic organic contaminants and to reveal ...


    By IWA Publishing

  • Search Query What are you looking for? How our minidot was swept up in a flood — and survived

    The miniDOT logger is a submersible water logger that measures dissolved oxygen and water temperature. Scientists working in aquaculture are familiar with the quality of PME instruments, which range from small loggers to larger monitoring systems. But what they may not be aware of is that PME’s innovative products occasionally become ...

  • Simplifying the Screening Workflow for Extractables Testing: Infographic

    The safety of pharmaceuticals, cosmetics, and foodstuffs may be compromised by chemical compounds in the various types of packaging and food contact materials (FCMs) that are in direct contact with the consumer product. Due to continuously increasing global regulations, the characterization of extractables and ...


    By Climate Institute

  • Case study - Grundon - Kennetholme Quarry

    The prime objective of the new wash plant is to process ‘as-dug' material in a replacement for the existing Grundon operation at the nearby Padworth Quarry where mineral processing will soon cease. Kennetholme has over 10 years of reserves of a flint based sand and gravel. The new plant site was originally an old paper mill works. Some of the old infrastructure has proved useful for the new ...


    By DUO (Europe) plc

  • Case study - Hadleys

    Material Source: Excavation waste from construction sites.  Equipment Installed: Main components included: Commander 1400 Hopper Feed Conveyor 16 x 5 Rinsing Screen Logwasher c/ with Dewatering Screens Finesmaster 120 Sand Plant 16 x 5 Dry Screen Bivitec Pre- Screen System ...


    By DUO (Europe) plc

  • Case study - CEMEX - Kingsmead

    At its Kingsmead site, near Horton in Berkshire, where CEMEX produces aggregates to service its concrete plant and to supply the market place, new plant has increased both throughput and flexibility. The 40 hectre Kingsmead site, owned and operated by CEMEX UK has extensive reserves of sand and gravel and has been recently redeveloped as part of its current national investment programme of over ...


    By DUO (Europe) plc

  • Case study - Specialty spiral core winding

    Location: Ohio Equipment: Adwest Technologies Regenerative thermal oxidizer (RTO) Manufactured in 1999; Refurbished 2016 5,000 scfm capacity Problem: A manufacturer of spiral cores for multiple products needed to economically control emissions. Their growth had resulted in increased emission tonnage and were nearing the ...


    By Kono Kogs, Inc.

  • Polishing of municipal secondary effluent using native microalgae consortia

    This work evaluates the use of native microalgae consortia for a dual role: polishing treatment of municipal wastewater effluents and microalgae biomass feedstock potential for biodiesel or biofertilizer production. An initial screening was undertaken to test N and P removal from secondary effluents and biomass production by 12 consortia. A subsequent treatment was performed by selected ...


    By IWA Publishing

  • Treatment of Cyanide Bearing Wastewaters

    Water Innovations utilizes a 2-stage Cyanide Oxidation (CN) system that can treat from 2 GPM to 10 GPM. In the first stage of treatment, hypochlorite oxidizes cyanide to cyanate. It consists of two double-wall “Batch” Cyanide Oxidation Tank and an accumulation tank for cyanide-bearing rinse water, each tank equipped with one mixer. Wastewater containing cyanide will be pumped or flow ...


    By Water Innovations, Inc

  • Using experimental design for the screening and optimization of key factors on silica particles adsorption using magnetic nanoparticles – a case study of chemical mechanical polishing wastewater treatment

    This study applied magnetic nanoparticles (MNPs) to chemical mechanical polishing wastewater treatment using experimental design (Plackett–Burman methods) to select the key factors among pH, mixing, Polyaluminum chloride dosage, settling time, MNPs dosage, and temperature and using response surface methodology (RSM) to determine the optimal values of key factors. Research results showed that ...


    By IWA Publishing

  • Structural improvements on hydrodynamic separators: a computational fluid dynamics approach

    Hydrodynamic separators (HDSs) have been used extensively to reduce stormwater pollutants from urbanized areas before entering the receiving water bodies. They primarily remove particulates and associated pollutants using gravity settling. Two types of HDSs with different structural configurations of the inner vortex-inducing components were presented in this study. One configuration consisted ...


    By IWA Publishing

  • Should Your Sensor Have A Connector Or Pin Terminals?

    When it comes to measuring the activity of your project, it’s nice to have options. High precision sensors can offer plenty of selections from the range of your measurements to the output of your readings, but a sensor is only as good at its connection. Connectors and pin terminals are common and dependable connections that relay your readings from within the sensor to the screen in front ...


    By Jewell Instruments LLC

  • Real Time COD and BOD Monitoring in a Municipal Wastewater Treatment Plant - Case Study

    Introduction A municipal Wastewater Treatment Plant (WWTP) located in the Greater Toronto Area (GTA) currently utilizes Biological Oxygen Demand (BOD) from a 24-hour composite sample to monitor their discharge to Lake Ontario and meet compliance standards. The Challenge The BOD method run on the 24-hour composite from the final effluent of the WWTP is a 5-day ...


    By MANTECH

  • Electrocoagulation Wastewater Treatment – An Application To Sustainably Reuse Textile Wastewater

    The textile industry is a water consumption intensive industry. Water is utilized for cleaning the raw material, and for the different steps in the textile dyeing process. Due to the effects of water scarcity and stricter environmental regulations, the cost of fresh water utilization has increased worldwide. In addition, the textile industry is faced with pressure by government regulators to move ...

  • Headworks Screening for Smaller Plants

    Water treatment facilities in smaller towns and villages, as well as treatment works supporting institutions, prisons, resorts or remote facilities, have difficult choices to make when selecting a headworks system. All require a solids control strategy, but lower flows and smaller budgets limit the available equipment options. A number of different types of equipment can be used to meet these ...


    By JWC Environmental

  • Assessment of organic micropollutants occurrence in treated wastewater using heat shock protein 47 stress responses in Chinese hamster ovary cells and GC/MS-based non-target screening

    Combining bioassays and analytical chemistry screening is a powerful approach to assess organic micropollutants which are the main contributors to toxic potential in complex mixtures of treated wastewater (TWW). The aim of this study was to perform a comprehensive toxicity assessment of treated effluents using stress response bioassays and then to assess the occurrence of the organic ...


    By IWA Publishing

  • Are you Sitting on a Ticking Time Bomb?

    Health risks of sitting for prolonged periods The Lancet have published a new study looking at the results of sitting for prolonged periods and the link to higher mortality. The study was undertaken by a number of international researchers who analysed the data from 16 studies covering more than one million men and women looking at sitting time, physical activity and ...


    By SHEilds Ltd

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