Why consider an alternative to traditional chemical water treatment?

  • To substantially reduce or eliminate the cost of water treatment chemicals and their associated costs for insurance, storage, handling and disposal

  • To reduce the amount of water used in open cooling water operation and the associated cost for supply and discharge

  • To eliminate discharge of toxic chemicals

  • To facilitate EPA & OSHA compliance by eliminating chemcials

  • To treat water for applications where the use of chemicals is either too costly or the application itself prohibits their use

  • To descale systems, which have lost efficient heat transfer, without the need for rodding or acid cleaning

  • Eliminate algae and bacteria,including difficult problems such as yeast and Legionella, by the use of a simple and very effective ionization unit

    ECOsmarte Cooling Tower Configuration
    cooling tower configuration

    diagram close-up
    With ozone and ionization gaining acceptance in cooling tower water treatment, ECOsmarte ionic copper and natural oxygen system provide the best available technologies for cooling tower management. Oxygen radicals (OH and O2) from the water itself provide more powerful, less corrosive oxidizers than ozone and are enhanced by the residual sanitizer, ionic copper. ECOsmarteoxygen and residual ionic copper act as a powerful biocide that decreases or nearly eliminates the need to remove quantities of water from the cooling tower in order to decrease the concentration of organic and mineral solids in the system.

    ECOsmarte treatment reduces the need for chemical additives to the cooling tower water. In a properly installed and maintained system, bacterial counts are reduced, with a subsequent minimization of the build-up of biofilm on heat exchanger surfaces. The resulting reduction in energy use, increased cooling tower operating efficiency and reduced maintenance effort provide cost savings as well as environmental benefit and regulatory compliance with respect to discharge of wastewater from blowdown. Cooling towers associated with chillers for air-conditioning should immediately consider the purchase of an ECOsmarte Cooling Tower System.

    A cooling tower functions to cool a circulating stream of water (see figure"BEFORE"). The tower acts as a heat exchanger by driving ambient air through falling water, causing some of the warmed water to evaporate (evaporation gives off heat -- providing cooling) and then circulates cooler water back through whatever equipment needs cooling (such as a chiller condenser). Typically, chemicals such as chlorine and chelating agents are added to cooling tower water to control biological growth (called "biofilm") and inhibit mineral build-up (called "scale"). The control of biofilm and scale is essential in maintaining cooling tower heat transfer efficiency. As the water volume in the tower is reduced through evaporation and drift, the concentration of these chemicals and their byproducts increases. Cooling towers also pick up contaminants from the ambient air. To maintain chemical and contaminant concentrations at a prudent level, water is periodically removed from the system through a process called "blowdown" or "bleed off."

    The blowdown water and the water lost through evaporation and drift are replaced with fresh "make-up" water (which also contains minerals and other impurities). Blowdown water must subsequently be discharged to a local wastewater treatment facility or discharged onsite to the environment. The blowdown water typically contains little organic material, and the local wastewater treatment facility will charge extra sewage fees for accepting the water. These costs can be quite significant in the overall costs of operating a cooling tower. Discharge of the blowdown water to the environment onsite is coming under increasing regulation because of the contaminants typically found in blowdown water. Oxygen will dissipate quickly and not be found in the blowdown water. This reduces the overall chemical load found in the discharge water, making it easier to comply with regulations.

    Most ECOsmarte Cooling Tower Systems include the following components: water and oil coalescing filters, particle filter, oxygen annodes, copper annodes, and a monitoring/control system.

    Field tests have demonstrated that the use of oxygen and ionization in place of chemical treatment can reduce the need for blowdown, and, in some cases where make-up water and ambient air are relatively clean, can eliminate it. As a result, cost savings accrue from decreased chemical and water use requirements as well as from a reduction of wastewater volume. There are also environmental benefits as fewer chlorine or chlorinated compounds and other chemicals are discharged. An ECOsmarte Oxygen/Copper System should require less maintenance per year than either a chemical or chemical/ozone system.

    There is substantial evidence that ionization and oxygen act as a descaling agent. The premise is that oxygen oxidizes the biofilm that serves as a binding agent adhering scale to heat exchange surfaces. When scale build-up on condenser tubes is reduced, higher heat transfer rates are achieved. Increasing the condenser heat transfer rate reduces the chiller head pressure, which then allows the chiller to operate more efficiently and consumes less energy. Certain calcium and magnesium carbonate revert and maintain a bicarbonate state to as high as 150 in ECOsmarte's field experience.

    CASE STUDY: ECOsmarte Chemical-Free Mini-Tower 1 1/2" System

    XYZ Plastic Injection Molders, Dallas, Texas

    Installed ECOsmarte 1 1/2" Standard 1 Ton Cooling Tower System, 2/96 Water quality shows major improvement; Tower down time reduced dramatically and no chemicals are used in this tower. Customer testimonial available.

    pH Management: none, tower pH 8.3 to 9.0
    TDS Source Water: 670
    TDS Tower Water: (testing not needed) 3300 actual at 1 year
    Calcium ppm Source: 340 (20grains of hardness)
    Calcium ppm Tower: (testing not needed)
    PSI: 80
    Sump size: 600 gallons
    Filtration: sediment pre-filter, granular activated carbon
    Electrical: 110V, 30VA with automatic backwash every 7 days
    Make-up Volume: 100 gallons per week
    Ionization Hours: 96 hours/month run consecutively
    Target Copper Level: 1.2ppm
    Oxygen Hours: Continual
    Chemicals Used: none
    Cost of System: $3,850.00 installed
    Primary Benefits: Zero down time, zero scale, complete elimination of chemical treatment, and water in injection molding equipment cooling is also scale free.

    1 1/2" System Complete (sump size to 20 m) $3895
    2" System Complete (sump size to 100m) $7995
    4" System Complete (sump size to 275m) $18,750
    Options & Upgrades
    pH controler
    ion-specific controllers, oxygen/ionization
    additional chambers (4" Systems only)