scaling control dosing system Articles

  • 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 ...

  • Improvement of multi-parameter-based feed-forward coagulant dosing control systems with feed-back functionalities

    Coagulant dosing control in drinking and wastewater treatment plants (WWTPs) is often limited to flow proportional concepts. The advanced multi-parameter-based dosing control systems have significantly reduced coagulant consumption and improved outlet qualities. Due to the long retention time in separation stages, these models are mostly based on feed-forward (FF) models. This paper ...


    By IWA Publishing

  • 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 ...

  • Partech Water Instruments Case Study: Landfill Turbidity and Dosing Control - Case Study

    Set in one of Devon’s most beautiful river valleys Deep Moor is a haven for aquatic wildlife and therefore the site needs to be careful not to have any detrimental effects on the environment. Partech have been working closely with Greenacre Pumps of Newton Abbot in order to provide an extremely reliable and cost-effective dosing system. The best things about Partech’s Turbidity and ...


    By Partech (Electronics) Ltd.

  • Hydrogen Sulfide control in a municipal sewer collection system case study

    Odor and Corrosion Control in Pump Stations Using Microcat – ANL BioBlend – BSE 104 Problem Hydrogen sulfide generated in sewer systems can cause safety and maintenance problems including toxicity to humans, odors and corrosion. Several methods are used to control hydrogen sulfide in collection systems. While many have proven to be at least partially ...


    By Bioscience, Inc.

  • A sewer process model as planning and management tool – hydrogen sulfide simulation at catchment scale

    The collection system of a major city at the Persian Gulf was simulated for bulk water hydrogen sulfide and the release of sewer gas to the urban atmosphere. Geometry data on 870 km of sanitary sewer and data on dry weather flow entering all nodes in the catchment was exported from a Mike Urban database and imported to the sewer process model WATS. The process model then routed sewage and sewer ...


    By IWA Publishing

  • Would a two-stage N-removal be a suitable technology to implement at full scale the use of anammox for sewage treatment?

    Sewage treatment with anammox could be implemented through a two-step reactor system, where the first reactor would be devoted to partial nitritation. A process design was sketched including control loops. The control strategy regulates the flow-rate of the rich ammonium sidestream produced after dewatering the digested sludge, to keep the ammonium concentration at a set point in the partial ...


    By IWA Publishing

  • Case study - Algae control in cooling towers

    Company: Dubai festival city Description: LG Sonic industrial units for district cooling facility in Dubai Project objective: Reduce chemical dosage for water treatment and, at the same time, control factors that may cause problems, such as corrosion, scaling, and microbial activity Before treatment Scaling, ...


    By LG Sonic

  • Pathogen Inactivation by a Closed Alakaline System

    ABSTRACTThe efficiency of advanced alkaline disinfection in closed systems has been demonstrated to depend on the balance of ammonia concentration, pH, exposure time, temperature, total solids content, post-treatment storage time and mixing effectiveness. When the alkaline system is a closed one, an additional pathogen stressor is added: pressure. The effect of the alkaline dosing has been ...

  • Removing Struvite from wastewater systems

    Named after Henrich Christian Gottfried Von Struve, who discovered the magnesium ammonium phosphate crystals in medieval sewer systems in Hamburg in 1845, struvite is a major problem for waste water treatment plants. The hard, crystalline deposit forms scale on lines and belts, in centrifuges and pumps.  It also clogs system pipes and other equipment including anaerobic ...

  • Experiences with the conventional pretreatment system in the seawater reverse osmosis plant at Kalpakkam

    A 1800 m³/day Seawater Reverse Osmosis (SWRO) plant was commissioned in October 2002 at Kalpakkam, India, as part of the Nuclear Desalination Demonstration Project (NDDP). The conventional pretreatment scheme was adopted consisting of a lamella clarifier, pressurised sand filter, activated carbon filter and cartridge filter. The dosing of pretreatment chemicals, ferrous sulphate and ...


    By Inderscience Publishers

  • atg UV technology offer both low pressure amalgam and medium pressure UV systems

    From small scale industrial applications to large water treatment works and fully integrated PLC controlled UV packages atg UV Technology can offer a range of UV disinfection / treatment solutions to suit any application. As industry experts, atg UV can offer standard Low Pressure, Low Pressure Amalgam and high power Medium Pressure UV systems. Additionally atg UV also offer bespoke ultraviolet ...


    By atg UV Technology

  • Removal of pharmaceutical residues using ozonation as intermediate process step at Linköping WWTP, Sweden

    Pilot tests as basis for the design, implementation and operation of a future full-scale oxidation plant completing the existing sewage treatment in Linköping, Sweden, were performed. Using an ozonation step between bio-sedimentation and post-denitrification processes, the primary goal was the removal of the highest priority substances to effluent water levels that will not cause adverse ...


    By IWA Publishing

  • Water Reclamation – NEWater Singapore

    Hanovia Photon UV Systems Bedok NEWater Water Reclamation Plant (WRP) - Pilot Plant – 420m3/hr Bedok NEWater WRP - Full Scale Plant – 1,335m3/hr Kranji NEWater WRP - Full Scale Plant – 1,667m3/hr Bedok NEWater WRP – Pilot Plant - 3 x PMD320F2 Photon Systems (above) Bedok NEWater WRP – Full Scale Plant 3 x PMD321K6 Photon Systems Kranji NEWater WRP – 3 x PMD361K6 ...

  • Inactivation of human adenovirus by sequential disinfection with an alternative UV technology and free chlorine

    There has been growing concern over human exposure to adenoviruses through drinking water due to the extreme resistance of human adenoviruses to the traditional UV technology (low-pressure (LP) UV). As an effort to develop an effective treatment strategy against human adenoviruses in drinking water, we determined the effectiveness of sequential disinfection with an alternative UV technology ...


    By IWA Publishing

  • Theoretical and practical experience of calcium phosphate inhibition in RO waters

    The increasing trend over the last ten years to use waste water as a feed source for reverse osmosis membrane plant has resulted in an increase in calcium phosphate scaling on membrane surfaces. This is due to much higher levels of phosphate in waste water typically 10-30 mg/l as compared with a groundwater source which may have only 1-5 mg/l of phosphate. These higher phosphate levels resulting ...

  • Plant for the Istanbul waterworks

    Shock chlorination for a water quantity of 55,000 m³/h! This is the result of a large project carried out by Grundfos Alldos for the city of Istanbul together with Durko as the local representative.The background: the municipal waterworks of the Turkish metropolis draw their raw water from a local lake. The water is routed from there to the various waterworks for treatment.To enable problem-free ...


  • Case history - Thai Honda Colloid-A-Tron treatment for compressor aftercoolers

    Thai Honda, has operated in Bangkok since 1965, manufacturing automobiles, motorcycles & power tools for the Asian market The Problem A series of 220 KW air compressors and air dryers generating compressed air which is used to power various equipment throughout the plant. Due to the energy produced the equipment generates a large amount of heat and cooling water is ...

  • Nova Scotia - Communal Development case study

    Site: Voyager Lakes Development Location: Nova Scotia, Canada “Unique” and “Visionary” are terms that have been used to describe the new equestrian oriented Voyageur Lakes development outside Halifax, Nova Scotia. Voyageur Lakes is a mixed-use development that includes, residential homesites, shops and at the heart of the development an Equestrian Center. ...


    By Quanics Incorporated

  • Brazos Electric Generation Facility and Fractional Electrodeionization (FEDI®)

    Overview Brazos Electric Cooperative Power Plant in Cleburne, TX is a nominal 258 MW combined cycle gas fired power plant operating on AGC (Automatic Generation Control) load requirements. The plant uses approximately 54 million gallons of water per year for boiler feed water and NOx control of its combustion turbine. The power plant was originally commissioned in 1997. The ...


    By QUA Group LLC

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you