wastewater screening Articles

  • Wastewater Treatment- Internally Fed Screen

    Wastewater Treatment:  Solids removal with internally fed screens efficiently filters the majority of material.  Stuart Ward of  Process Engineered Water Equipment, LLC explains screening equipment is key.  Every installation has an issue and at BrucePac JLR the challenge was removing screened ...


  • SaniTEE: an ideal septic tank wastewater screen

    SaniTEE is an effluent wastewater screen (commonly known as an effluent filter) that reduces the gross suspended solids discharged in septic tank effluent. This helps extend the lives of drain fields, reduces clogging of orifices in effluent disposal systems, and allows use of non-solids handling effluent pumps. It is shown in Figure 1. It fits inside a standard septic tank outlet tee by dropping ...


    By Bio-Microbics, Inc.

  • Wastewater treatment facility uses ‘monsters’ to better manage screening, odor and trash

    As wastewater pours into the Cobourg Water Pollution Control Facility located on the outskirts of this Canadian town, it comes loaded with organics, trash, debris and chemicals. A large perforated plate screen system, called a Monster Separation SystemTM, is the plant’s first line of defense and removes all unwanted solids in order to protect downstream processes.Managers at the facility report ...


    By JWC Environmental

  • 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 ...


    By Inderscience Publishers

  • Methane production and hydrolysis kinetics in the anaerobic degradation of wastewater screenings

    Anaerobic biodegradability and hydrolysis rates of wastewater screenings were determined using the biochemical methane potential test at 37 °C. The extent and rate of screenings conversion to methane of this complex and particulate substrate were investigated and since two stages of hydrolysis were identified, corresponding to the different types of materials in screenings, a linear and ...


    By IWA Publishing

  • 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 ...

  • What is Wastewater?

    What is wastewater? Wastewater, the waste discharge that first comes to mind in any discussion of stream pollution, is the discharge of domestic wastewater, which contains a large amount of organic waste. Industry also contribute substantial amounts of organic waste, some of which comes from vegetable and fruit packing; dairy processing; meat packing; tanning; processing of poultry, ...

  • Rotary Drum Screen - Case Study

    This case study showcases how the Old Atlanta Club Wastewater Treatment Facility has solved its debris problem thanks to Aqualitec's rotary drum screen Drumtec which is ian internally fed rotating drum screen built for heavy pretreatment applications such as draining, mud thickening, and sandy or ...


    By Aqualitec Corp.

  • 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 ...


    By IWA Publishing

  • Fine screens help New Jersey wastewater treatment plant stop rag and grease problems

    A few years ago the Hammonton Wastewater Treatment Plant, located in the lush green countryside of southern New Jersey, faced continuous problems with rags, trash and plastics passing right through a rusty old bar screen and into the oxidation ditch and final clarifier.After years spent unclogging pumps, clearing out trash and untangling the UV system – plant managers decided to find a better ...


    By JWC Environmental

  • Application of the Morris method for screening the influential parameters of fuzzy controllers applied to wastewater treatment plants

    In this paper, we evaluate the application of a sensitivity analysis to help fine-tuning a fuzzy controller for a biological nitrogen and phosphorus removal (BNPR) plant. The Morris Screening method is proposed and evaluated as a prior step to obtain the parameter significance ranking. First, an iterative procedure has been performed in order to find out the proper repetition number of the ...


    By IWA Publishing

  • Pharmaceutical concentrations in screened municipal wastewaters in Victoria, British Columbia: A comparison with prescription rates and predicted concentrations

    Pharmaceuticals and personal care products (PPCPs) are emerging chemicals of concern detected in surface waters globally. Recent reviews advocate that PPCP occurrence, fate, and exposure need to be better predicted and characterized. The use of pharmaceutical prescription rates to estimate PPCP concentrations in the environment has been suggested. Concentrations of 7 pharmaceuticals ...


    By John Wiley & Sons, Ltd.

  • Statistical optimisation for biological decolourisation and COD removal of screen–printing wastewater using Trametes versicolor

    The conventional treatment methods employed in decolourisation of industrial wastewater are not effective and lead to generation of hazardous sludge. In the present investigation, a systematic study of three important process variables (concentration of initial colour, glucose and ammonium chloride) influencing the decolourisation and Chemical Oxygen Demand (COD) removal in screen–printing ...


    By Inderscience Publishers

  • Chicken Skin Wastewater

    The wastewater from a poultry processing plant contained almost exclusively skins, and high concentrations of fat for approximately 8 hours of the production day. This wastewater created heavy blinding problems on their dewatering system. In lab tests the untreated wastewater would completely blind 30 thousands wedge wire screen and inhibit dewatering. IE-614 treated the wastewater with no pH ...


    By Integrated Engineers Inc.

  • Peach Processing Wastewater Treatment

    A major fresh pack operation of peaches and nectarines needed a screening system to remove the labels and peach fuzz from their wash water before it was pumped from the pond for irrigation use. Flow to the pond is a steady flow of 50 gpm, rising to 600 gpm during periodic draining of the peach coolers and washing systems. The water is a combination of wash water, labels and fuzz from the fruit, ...


    By Integrated Engineers Inc.

  • Cylindrical Screw Screen Spiraltec - Case Study

    In this case study taking place in Langley, Washington, the in-tank Spiraltec spiral screen, which is designed to collect, convey, dewater and compress wastewater solids, replaced a manual screen in a 0.2mgd capacity wastewater treatment plant. As a result on installing Aqualitec's Spiraltec, not only it is now complying with biosolids rules but ...


    By Aqualitec Corp.

  • Wastewater treatment in Ukraine

    Lviv Vodokanal collects for treatment on average 320,000 m3/day of domestic (800,000 inhabitants) and industrial wastewater. The wastewater is treated at two  Waste Water Treatment Plants (WWTPs) placed side by side some 15 km north of Lviv’s city centre. The plants have their own wastewater treatment system while the sludge treatment facilities are shared. The total design capacity of ...


    By Sweco

  • Wastewater treatment for a municipality

    Description of the plant At first, wastewater is pre-treated by a combinated sand and fat trap before further treatment is affected by a special screen. The accruing particles are collected in anti-septic plastic bags to avoid any personal contact because of hygienic reasons. Based on the high varying hydraulic amount of wastewater, an aerated mixing and balancing reactor is ...

  • Wastewater Treatment Works

    Margate and Broadstairs, two of the principal towns in northeastern Kent, attract thousands of visitors each summer to enjoy the beaches and countryside within easy reach of London. Such popularity comes with a cost. The infrastructure serving the area needs to be developed to keep pace with the rising population and the requirements of new UK and European Union legislation. With the ...


    By Black & Veatch Corporation

  • Screening of few aquatic floating plants for chromium phytoremediation

    Phytoremediation process using hydrophytes emerges as an attractive scientific and engineering tool for the attenuation of metal pollution in the aquatic environment particularly in secondary and tertiary levels of wastewater treatment. The selection of appropriate plants on the basis of maximum uptake potential for engineering application of the process is the key factor. The present study deals ...


    By Inderscience Publishers

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