ESOT ultra



ESOT ultra offers a unique solution, to prevent biological growth in open systems of cooling water and in processed water systems. Ultra technology ESOT controls your algae in three simple steps: production of ultrasound, ultrasound transfer and elimination of algae.

Use in cooling towers

Cooling towers often require a strict control and use of larger quantities of chemicals and regular dosing for biology control to enable operation of the tower. ESOT ultra is the latest technology to prevent the growth of algae, microorganisms and formation of bio film which prohibit and reduce cooling efficiency in cooling towers and can cause clogging of films and pumps, and corrosion of other constituents of the system. ESOT ultra applies the latest ultrasound techniques to prevent formation of algae and bio films in all industrial uses. ESOT ultra prevents formation of legionella and consequently the risk for human health. ESOT ultra drastically reduces the costs of the use of biocides.

Use for waste waters

Waste waters are often treated for reuse as drinking water or for other purposes. Since such waters contain high level of nutrients, algae can grow quickly as well as microorganisms and bacteria. ESOT ultra uses the latest ultrasound technology to remove algae from water treatment plants and refurbished tanks. ESOT ultra systems can be used f. e. in tanks, flocculation containers, clarifiers, settlement tanks…



  • independent unit
  • it uses electric power only
  • multifunctional PLC control
  • Iit produces little noise during its operation
  • 24VDC (max 5VA) available for optional GSM module
  • water resistant housing
  • alarm option


Automatic system for preparation and monitoring of cooling water quality

AquaControl is a carefully controlled and regulated system to compensate losses due to evaporation and TDS system. It is combined with a modern chemical treatment of cooling system enabling more than 4-times water thickening in the cooling system and considerably reduced water consumption used for water compensation. At the same time it does not endanger system operation due to lining, water scaling, corrosion and biofilm. AquaControl enables a careful control of the level of supplying water and losses due to TDS system, electrical conductivity of raw and system water and of pH value of the system water. Based on these parameters it regulates dosing pumps to stabilise hardness/corrosion inhibitors, dispersant and biocide and this way it supplies needed quantities of chemicals into the system water. The system enables continuous supply of biocide into the water for water compensation or shock dosing in adequate intervals. The controller in the process of shock dosing prevents TDS system at least 4 hours after the dosing to reach the optimal effect of biocide and prevent leakage of biocide into the environment. AquaControl insures adequate concentration of chemicals in the system water and thus optimal cooling system operation and it prevents the formation of water scaling, corrosion and biofilm in the system.

AquaControl system for preparation and control of cooling water quality contains:

  • microprocessor controller
  • water flow meter for supplying water
  • water flow meter for TDS system
  • meter for electrical conductivity of water
  • meter for water pH value
  • dosing pumps

AquaControl is produced on the basis of SIEMENS Simatic control series 300, which ensures connectivity to CNS and integration into the rest of the control systems of the same basis.


Modern method of management and control of the water treatment systems

Management and function control system of the system components in water treatment, as follows:

  • filters (multimedia, sand, activated charcoal)
  • softening device
  • decarbonisation
  • demineralisation
  • reverse osmosis
  • dosing stations and pumps
  • UV disinfection
  • ultrafiltration
  • electrodeionisation (EDI)

ESOTROL is produced based on SIEMENS Simatic controller series 300. The controller is equipped with a graphic touch screen and enables the following functions:

  • control of pumps and valves with actuators
  • constant control over functioning of all the system components
  • alarms – error description
  • monitoring work parameters (flow, hardness, conductivity…)
  • simple change of settings
  • trend display
  • backup and storage of alarm
  • connection with CNS
  • visualisation (SCADA)
  • GSM communication – sending short messages (sms) about alarms via mobile phones

Type algorithms, which are repeatedly tested in their functioning, provide high reliability of their system and minimum start-up time of a newly built system. On the request of an individual customer standardised functions of the system can be expanded.


Main areas of use:Projekt

    • evaporative condensers
    • cooling towers
    • cooling water

    VRTX is a system of cooling water preparation without chemicals, which utilizes mechanical principles and kinetic energy of hydrodynamic cavitation. Technology prevents scaling, corrosion and proliferation of microbial organisms.

    VRTX has developed a system for the selection of sizes and is used for general purpose specification of water treatment without chemicals. Current appropriate size of the VRTX system may vary depending on the specific information on locations such as nominal weight, total volume of water in the system, chemical composition of the filler water and characterization of the heat load of the system.

VRTX is proven technology. The oldest unit is operational for 15 years and has many references in:

  • food industry: dairies (Campina, Unilever, Yakult), breweries, production of soft drinks (Coca Cola, Tropicana…)
  • pharmaceutical industry (GSK, Pfizer, Abott, Kimberly Clark…)
  • retail chains (Costco Wholesale, Ahold…)
  • data centers, museums and banks
  • construction
  • automotive industry (Johnson Controls)

How does it work?

Cooling water is received from the cooling tower or condensing pool. Speed, trajectory and rotation are used to create the opposite watercourses, which leave the precise nozzles. Water collides with an enormous kinetic energy and shear. At the core of these flows an area of full vacuum is formed, which removes gases from the water. Under these conditions hydrodynamic cavitation occours (the formation, growth and collapse of bubbles) with intense, microscopically localized extremes of temperature, pressure, and high-energy micro-jets. Water passing through VRTX device is returned to the pool cooling system. The precipitated mineral colloids, together with the other colloids are removed by filtration.

VRTX technology removes limescale

The solubility of calcium is inversely proportional to the water temperature. In the cooling system calcium has a tendency to precipitate out of solution and form limescale. Water treatment with chemicals retains calcium ions in solution. Using VRTX technology by means of kinetic energy which is released when the water streams collide, solid particles of calcium carbonate are formed which form colloids. These colloids attract dissolved calcium and carbonate ions and are then filtered from the water stream.

VRTX technology kills bacteria

VRTX cavitation zone is extremely effective in removing microorganisms. Exceptional localized temperatures and extreme pressures that develop in the VRTX chamber, damage cell walls of microorganisms.

VRTX technology prevents corrosion

In VRTX water stream an area which is close to full vacuum (27.5 to 29.5 mm Hg) is formed that causes the degassing of dissolved CO2 from the water and keeping the pH of the water near or above 8.5. Removing items that could form the limescale and kill bacteria allows VRTX technology, to also remove corrosive chemicals from the cooling system. VRTX technology using filtration removes solid particles from the cooling water and thereby maintains the surfaces of equipment clean. VRTX technology and ESOT guarantee that this device is free from defects in material and workmanship for the period of one year from purchase. Each unit or part of which is shown inadequate during the warranty period, will be replaced by an authorized VRTX representative. The results demonstrate that the technology reduces the consumption of filler water and the need to remove salt from the cooling system. Experience indicates a 40% reduction in the amount of water for removing salt, and 15% of the filler water annually. Thus, a typical VRTX system of 1,000 tons capacity can save over 4,000 m3 of water per year.