Industrial Mixing Articles

  • Low energy mixing to optimize anaerobic digestion at the Kitchener WWTP

    The existing Kitchener Wastewater Treatment Plant (WWTP) is a conventional secondary treatment facility, with a rated capacity of 122,745 mVd. The plant is comprised of two separate secondary treatment plants (Plant 1 and Plant 2) served by a common headworks facilities and primary clarifier facilities. Plant 1 was constructed in the early 1960s and Plant 2 was constructed in the mid-1970s. Both ...

  • Case study - Industrial ASBR wastewater treatment facility, India

    This two (2) basin ASBR facility near Mumbai, receives a variety of industrial wastewaters collected from many factories and chemical production facilities. The 10,000 m3/d wastewater plant comprises flow metering, chemical treatment,  pH correction, flow splitting, flow equalization with aeration, chemical precipitation and lamella plate clarification, two (2) basin ASBR biological ...

  • Fortesa International Stop It HP - Case Study

    STOPIT HP is a multi-component, yet easy to apply, epoxy composite system designed for high-pressure sealing applications with working pressures up to 2,000 PSI (140 kg/cm2) and operating temperatures to 175° F (79° C) while providing a built in 5:1 safety margin. Fortesa International (Dakar, Africa) In the inhospitible desert of Dakar Africa a high pressure 4" fiberglass pipline was ...


    By InduMar Products, Inc.

  • Treating pharmaceutical wastewater - Case Study

    A pharmaceutical facility in the Caribbean had an existing wastewater treatment process that utilized a sequencing batch reactor (SBR). SBRs use large tanks to collect wastewater, then a number of different options can be employed to treat the water (such as chemicals addition, aeration and mixing). When an SBR aerobically breaks waste down, it can produce a high volume of air that needs to be ...


    By QED Environmental Systems

  • Los Angeles County WRRF Embraces Codigestion

    Technology to produce food waste slurry key to project implementation - and helps generators comply with California organics recycling mandates. The Sanitation Districts’ JWPCP in Carson (CA) treats an average of 280 million gallons/day of wastewater. One of the two anaerobic digestion tanks above has been used for codigestion, with the second serving as the control. Photos ...


    By BioCycle Magazine

  • Modeling the pH effects on nitrogen removal in the anammox-enriched granular sludge

    The aim of the study was to determine the pH effects on nitrogen removal in the anammox-enriched granular sludge. The experimental data were extracted from a 4 L completely-mixed batch reactor with the granular sludge at different initial pH values (6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5) and constant temperature T = 30 °C. Simulations were run in GPS-X 6.4 using a comprehensive mechanistic ...


    By IWA Publishing

  • Antifreeze Windshield Washing Liquid

    In cold season nonfreezing liquid for windshield washer along with gasoline are virtually the only consumable materials for a car. It seems impossible to not use this product, because it allows the driver to maintain visibility of the traffic situation and helps reduce the number of car accidents. Antifreeze is used in all cars regardless of their brand and ...


    By GlobeCore GmbH

  • Dinitrogen oxide (N2O) emission in the treatment of urban wastewater via nitrite: influence of liquid kinetic rates

    N2O emission was studied in a continuous process via nitrite for real urban wastewater treatment. The relationship between the gaseous forms and the liquid kinetic rates of nitritation and denitritation was investigated. N2O mass load and global nitrogen mass balance were quantified. The emission factor of the N2O (gN2Oemitted/kg mixed liquor volatile ...


    By IWA Publishing

  • Investigation into mixing in the shallow floodplain Poyang Lake (China) using hydrological, thermal and isotopic evidence

    Although mixing in lakes has significant environmental and ecological implications, knowledge of mixing dynamics for shallow floodplain lakes has received little attention. In this study, hydrological, thermal and isotopic investigations were undertaken to provide evidence for the mixing in the large, shallow floodplain Poyang Lake (China). Depth profiles of water velocity, water temperature ...


    By IWA Publishing

  • Case study - Supplemental aeration nearly eliminates filamentous sludge bulking

    The Dubai Investments Park Wastewater Treatment plant in the United Arab Emirates faced challenges in their oxidation ditch due to filamentous sludge bulking, resulting in poor sludge settling in the secondary clarifier. Supplemental aeration was needed to eliminate the filamentous sludge bulking. Challenge: The oxidation ditch is treating an ...

  • Household water insecurity is associated with a range of negative consequences among pregnant Kenyan women of mixed HIV status

    Water insecurity (WI) is a serious and worsening problem worldwide, but its role in health outcomes among people living with HIV or pregnant women is unknown. We assessed experiences of WI in a cohort of 323 pregnant Kenyan women of mixed HIV status. The majority (77.7%) had at least one experience of WI in the previous month; it was associated with negative economic, nutrition, disease, and ...


    By IWA Publishing

  • Town Branch WWTP Controls Odors with Modular Covers

    The Customer: The Town Branch Wastewater Treatment Plant located in Lexington, Kentucky, USA, serves a population of 130,000—about 60 percent of Lexington-Fayette County. The plant began operating in 1919, and currently treats almost 11 billion gallons of wastewater annually. The Customer’s Needs: The Town Branch Wastewater Treatment Plant ...

  • Solar-Driven H2O2 Generation From H2O and O2 Using Earth-Abundant Mixed-Metal Oxide@Carbon Nitride Photocatalysts

    Light-driven generation of H2O2 only from water and molecular oxygen could be an ideal pathway for clean production of solar fuels. In this work, a mixed metal oxide/graphitic-C3N4 (MMO@C3N4) composite was synthesized as a dual-functional photocatalyst for both water oxidation and oxygen reduction to generate H2O2. The ...


    By SusChem

  • Hand-Mix Case Study: SMR Soil Stabiliser Experience in Devon

    Success in the Use of Recycled Aggregate Despite being the Highway Authority with the largest U.K. network, (some 12900 km) and having reputedly one of the strictest Street Works regimes in England; Devon County Council have been very receptive to the correct use of SMR Soil Stabiliser by Utility Companies since its ...


    By SMR (UK) Ltd.

  • Binary vs Quaternary: How to Decide Which Pump is Right for You

    Well, you’ve made it this far, and I am guessing that you are coming back because I have provided some useful information to help you understand the differences and nuances of a binary versus quaternary pump. This final chapter will help you think of some questions to ask when you are trying to make a decision of which pump to buy, or which system you would like to implement in the ...


    By Waters Corporation

  • Binary vs. Quaternary Pumps: High Pressure Mixing vs. Low Pressure Mixing

    Welcome to the next installment in my series on binary vs. quaternary pumps for liquid chromatography! In my previous post, I discussed how gradients are created as well as the importance of having accuracy and precision in your gradient. ...


    By Waters Corporation

  • Binary vs Quaternary Pumps

    How is a Gradient Created? Any liquid chromatograph is an amalgamation of a certain set of components that delivers to the scientist a monograph of the sample they are analyzing.  Traditionally, an LC system consists of a pump, an injector, a column heater, a detector and even more commonly these days a mass spectrometer or mass detector.  In ...


    By Waters Corporation

  • Destabilization dynamics of clay and acid-free polymers of ferric and magnesium salts in AMD without pH adjustment

    The physicochemical treatment was employed to treat acid mine drainage (AMD) in the removal of turbid materials using clay only (exp A) and a combination of clay, FeCl3 and Mg(OH)2 (exp B) to form a polymer. A 5 g sample of clay (bentonite) was added to 1.2 L of AMD and treated in a jar test at 250 rpm for 2 min and reduced to 100 rpm for 10 min. A 200 mL sub-sample from the 1.2 L mother ...


    By IWA Publishing

  • Mixing at double-Tee junctions with unequal pipe sizes in water distribution systems

    Pipe flow mixing with various solute concentrations and flow rates at pipe junctions is investigated. The degree of mixing affects contaminant spread in a water distribution system, and many studies have focused on mixing at the cross junctions; however, only a few have focused on double-Tee junctions of unequal pipe diameters. To investigate the solute mixing at such junctions, a series of ...


    By IWA Publishing

  • 4 Key Design Criteria for Jet Mixers

    Jet mixers are widely used in both municipal and industrial wastewater treatment facilities to blend the plant influent and suspend light organic solids in circular equalization tanks.  Other applications for these powerful hydraulic mixers include mixing anoxic tanks and anaerobic reactors with the latter application being for industrial waste streams only. Jet ...


    By KLa Systems, Inc.

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