scaling control treatment Articles

  • What classifies as water pollution and why is it an issue?

    The UN declared 2005-2015 as the International Decade for Action ‘Water for Life’. Yet each day thousands of people still die as a result of contaminated water. This does not even take into account the millions of organisms that perish every year thank to polluted water sources. Water pollution is a huge issue that is made more so by the fact that unfortunately, water is ...


    By Aquaread Limited

  • Calcium Sulfate Scale Control with ML2580

    Background Mining company operates an ore roasting operation for gold recovery in the western US. SO2 is generated in the process and quenched with water creating a super saturated stream of SO4 . Calcium sulfate (gypsum) scale forms in the process plumbing and reduces critical flow rates. After months of reduced production, the decision was made to shut down and hydro-blast the system. The ...


    By ChemTreat, Inc.

  • Controlling Scale Deposition and Industrial Fouling

    It costs US industry billions of dollars a year to control and remove the limescale that builds up in industrial equipment such a heat exchangers, evaporative coolers, boilers, chillers and other water fed equipment. Oil wells, for example, face significant scaling problems from the highly mineralized water that are extracted with the oil. Limescale not only increases downtime, maintenance ...

  • Controlling scale in water systems helps prevent legionella

    The Legionella bacterium, Legionella Pneumophila (LP), the fundamental agent of Legionnaire’s Disease, is a water-based organism, which causes infection when inhaled in an aerosol form. Legionnaires' Disease acquired its name in 1976 when an outbreak of pneumonia occurred among persons attending a convention of the American Legion in Philadelphia. Later, the bacterium causing the illness ...

  • Controlling scale deposits in the pulp & paper industry

    The pulp and paper industry is one of the heaviest users of water within the North American industrial economy, requiring on average 54 cubic meters of water per metric ton of finished product.  As water is used in nearly every part of the manufacturing process, accumulation of scale is a phenomenon that can occur in all pulp and paper making processes. This occurs even with the purest water ...

  • Lessons learnt from evaluating full-scale ammonium feedback control in three large wastewater treatment plants

    Three large wastewater treatment plants in Sweden participate in a project evaluating different types of ammonium feedback controllers in full-scale operation. The goal is to improve process monitoring, maintain effluent water quality and save energy. The paper presents the outcome of the long-term evaluation of controllers. Based on the experiences gained from the full-scale implementations, a ...


    By IWA Publishing

  • City of Orlando Wastewater Treatment Plant Belt Filter Press Struvite Scale Control & Enhanced Flocculation case study

    Five month evaluation of Hydropath technology’s ability to treat magnesium ammonium phosphate hexahydrate (Struvite, NH₄MgPO₄•6H₂O) scale and to enhance flocculation resulting in reduced polymer usage Location: City of Orlando Wastewater Treatment Plant. Address: 5100 LB McLeod Rd., Orlando, FL 32811 Application: Struvite accumulation in ...


    By HydroFLOW USA

  • Scale removal - Case Study

    Water Cooling Towers Operate at Better Efficiency and Lower Maintenance Costs with KDF Water Filter Media "As Seen in Water Quality Products" At TowerKlean™ LLC... KDF Water Filter Media Help with Scale, Algae, Chlorine and Heavy Metal Removal from Water Scale... it's a vicious never-ending problem that can kill the overall efficiency of water-cooling systems or ...


    By KDF Fluid Treatment, Inc.

  • Full-scale SVE system operates in tandem with groundwater treatment

    Since 1993, SVE has been implemented using two designs at the TP Industrial, Inc. (TPI) site in Gardena, CA, to treat soil contaminated with chlorinated solvents. The SVE system was modified in 1997 to improve emissions control efficiency by using carbon adsorption units that treat effluent from an air-stripping system for treating site ground water. By the end of 2007, SVE had removed a ...

  • Control of Microthrix parvicella and sludge bulking by ozone in a full-scale WWTP

    Bulking and rising sludge are common problems in wastewater treatment plants (WWTPs) and are primarily caused by increased growth of filamentous bacteria such as Microthrix parvicella. It has a negative impact on sludge settling properties in activated sludge (AS) process, in addition to being responsible for foam formation. Different methods can be used to control sludge bulking. The aim of ...


    By IWA Publishing

  • Full-scale control of Mycolata foam by FEX-120 addition

    Foaming incidents in activated sludge treatment plants are a worldwide problem and occur on a regular basis in both municipal and industrial activated sludge treatment plants. Foaming is most often caused by excessive growth of filamentous bacteria, especially the gram-positive ones affiliated within the Actinobacteria, e.g. the branched Mycolata or CandidatusMicrothrix ...


    By IWA Publishing

  • Small-Scale Biosolids Composting

    Cambridge, Ohio retrofitted a portion of its vacuum assisted drying beds into a covered composting facility, processing about 300 dry tons/year of biosolids and wood chips. Like many small communities in an agricultural area, the City of Cambridge, Ohio (pop. 14,000) managed biosolids generated by its 2.25 mgd Water Pollution Control Center (WPCC) via land application on farm fields. “Then ...


    By BioCycle Magazine

  • Dolphins to the Rescue: Dolphins Eliminate the Need for Chemical Treatments to Prevent Scaling

    Untitled Document Mineral scale accumulates daily inside the boilers and cooling towers that keep us warm in the winter and cool in the summer. Scale is a bad actor causing loss of efficiency, ...


    By Dolphin WaterCare

  • A Struvite Control and Phosphorus Removal Process for Centrate: Full-Scale Testing

    ABSTRACTThe North End Water Pollution Control Centre (NEWPCC) in Manitoba, Canada serves a population of approximately 380,000. The dry weather flow to the NEWPCC is approximately 175 ML/d (46 MGD). The plant uses anaerobic digestion and centrifuge dewatering in its solids treatment train. The centrate stream comprises approximately 20 percent of the plant’s phosphorus load. The plant suffers ...

  • Chlorites Control in European Drinking Water Treatment Plants

    ABSTRACT The paper reports initial results for experiments carried out at Fortore drinking water treatment plant aimed at controlling chlorites. Research was performed in parallel with a full-scale drinking water plant (Fortore, Italy) and a pilot plant at Mosina water treatment plant which supplies potable water to the city of Poznań (Poland). Both plants operated with pre-disinfection ...

  • Control-design methodology for drinking-water treatment processes

    The performance of a drinking-water treatment plant is determined by the control of the plant. To design the appropriate control system, a control-design methodology of five design steps is proposed, which takes the treatment process characteristics into account. For each design step, the necessary actions are defined. Using the methodology for the pellet-softening treatment step, a new control ...


    By IWA Publishing

  • Treatment and Disposal of Air Pollution Control Residue

    What is APCr? Thermal waste management using Energy Recovery Facilities (ERFs) is now a well-managed and mature technology that is subject to environmental monitoring by a range of competent international bodies. These ERFs have been established as a means of diverting waste away from landfill disposal and for valorising the material and energy content of the waste. Counter to historic ...

  • Micro-aeration for sulfide removal in anaerobic treatment of high-solid wastewater: a pilot-scale study

    The presence of sulfur compounds (e.g. protein, sulfate, thiosulfate, sulfite, etc.) in the feed stream generates highly corrosive and odorous hydrogen sulfide during anaerobic digestion. The high sulfide level in the biogas stream is not only poisonous to many novel metal catalysts employed in thermo-catalytic processes; but also reduces the quality of methane as a renewable energy. This study ...

  • Removal of natural organic matter and trihalomethane formation potential in a full-scale drinking water treatment plant

    A multidisciplinary approach was applied in this work to characterise natural organic matter and evaluate the performance of a full-scale waterworks treating organic-rich surface water. It was shown that the combination of the treatment processes considered efficiently removed the dissolved organic matter, including its specific fractions. Most of the dissolved organic carbon and nitrogen (DOC ...


    By IWA Publishing

  • Full Scale Treatment of Slaughter House and Meat Packing Waste at Jennie-O Turkey Store, Barron, Wisconsin

    ABSTRACTJennie-O Turkey Store owns and operates a 0.057 m3/sec (1.3 MGD) treatment plant for treating wastewater from the slaughter of 26,000 turkeys per day. In 2000, Jennie-O Turkey Store was required by the Wisconsin Department of Natural Resources (WDNR) to remove phosphorous below 1 mg/l. The existing lagoon system with seepage cell was not removing phosphorous cost effectively and odors ...

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