Anolyte (Eletcrolyzed Water) Generator Request a Quote

About Anolyte Generators

ANW anolyte machines are designed to produce anolyte using low amounts of salt and energy. About 1.5 grams of NaCL and approximately 4 W of energy are required to generate 1 Liter of anolyte with approximately 500 ppm of FAC. Reduced usage of salt and energy consumption is critical for many industries including municipal water treatment, health care and industrial applications.

These applications generally require high levels of sanitation with no or very low residue of salts, corrosion control may also be critical and therefore the content of chlorides in the treated water must be reduced to minimum, e.g. cooling towers and cooling water disinfection. All such applications are perfectly suited to the use of an ANW anolyte generator.

Anolyte and Catholyte Solutions Explained

Anolyte is a natural disinfectant liquid solution wheras Catholyte is a natural mild liquid detergent. The application of both solutions ranges from disinfection to cleaning in a completely environmentally friendly way. The combination of these two solutions has been proven to be very effective in the removal of organic contaminants in water as well as biological biofilms.

Anolyte Generator Models

Anolyte generator model EL The EL units have been developed to produce Neutral Anolyte on demand when disinfecting, sterilization and water purification are required. All manual units have water cooling, flow and temperature switches to protect units from low/no-mains flow situations.
Anolyte generator model ELA Semi-automated units with an input valve, pressure relays, flow meter, level switchers for anolyte tank, Grundfos or KNF brine pump and KNF acid pump which is used for flushing cell(s). Units have a conductivity meter and brine conductivity meter to control the quality of the feed brine. PCB of ELA units enable the setting and stabilization of the working current of the units. The units may have different FAC (Free Activated Chlorine) setting ranging from 100 ppm up to 500 ppm in one unit.
Anolyte generator model ECO The ECO units are designed for purifying drinking water that doesn't meet the WHO (World Health Organisation) health standards. Not only does it kill all bacteria and viruses in the water within seconds, but also reduces heavy metal content to US/European safety standards and produces pleasant-tasting potable water, retaining most of its beneficial mineral contents. Units include power supply, cell(s), temperature switch on the cell(s) and flow switch. Models from ECO-300 and up have inbuilt acid pump for cell flushing.
Anolyte generator model ELA-ANW ANW units are an ELA unit with the same specifications and features but with low salt (~1,2 - 1,5 g/L) and energy consumption that is achieved through a special design of the cell(s) and hydraulics of the unit.
Anolyte generator model ELA-SW SW units capable of generating anolyte with FAC (Free Available Chlorine) ranging from 500 ppm to 1000 ppm using sea water with 5-7 PSU up to 30-35 PSU salinity. No other source of feed water or brine is required.
HD units are designed to generate anolyte with FAC (Free Available Chlorine) concentration ranging from 1000 ppm to 6000 ppm.

Anolyte Solution Features

  • A pH neutral solution (pH between 6.8 and 7.3)
  • A high ORP (Oxidation Reduction Potential) solution (ORP above +900mV when fresh)
  • A highly effective broad spectrum disinfectant

Catholyte Solution Features

  • An alkaline pH solution (pH between 10.7 and 11.1)
  • A low ORP (Oxidation Reduction Potential) solution (ORP than -400mV when fresh, up to +200mV when stored for a few days)
  • An effective detergent and cleaning agent

ANW Anolyte Generator Unique features

  • Ph of ANW anolyte depends on the Ph of the source water but generally it is a Ph of 7.5. ANW generators can be regulated in the range Ph 5.5 - 7.5. Regulation of Ph requires installation of additional components in ANW generators.
  • ANW generators do not produce catholyte as a side product in a commercially viable volumes. Flow of catholyte is ~ 0.4% of the total flow specific for a particular generator, it is soley based on water and can be safely disposed of.

Usage of Diaphragmatic Cells

At the heart of all our anolyte generators are the patented diaphragmatic cells that have been designed using innovative and unique technology to effectively deliver electrochemically activated solutions (Anolyte and Catholyte) using a 1-4% water solution of NaCl as initial material.

Unlike other electrolytic cells, a diaphragm separates the Anolyte and Catholyte solutions that are generated respectively at the anode and cathode chambers of the cell. This process prevents the two streams mixing and inter-reacting to form a simple sodium hypochlorite solution.

These cells are manufactured with variable Anolyte output capacity ranging from 20 Liters to 1200 Liters per hour of Anolyte per cell. A combination of cells allows the mainufacture of units with an output capacity up to 6000 LPH (Liters Per Hour).

Unique Characteristics of Diaphragmatic Cells

  • Each cell is a round-shaped electrolyser, constructed of titanium and rare metals. The electrodes are separated by a polymer or ceramic diaphragm. Even under severe conditions hardly any element of the cell can be destroyed.
  • The cells they have production capacity varying from 20l up to 1200l of anolyte per hour. So with only one unit up to 20 - 1200 m3/h of water can be effectively disinfected or up to 1200 l/h of Anolyte directly dispensed.
  • Production of Catolyte, where required, by the diaphragmatic cells can be used for washing or whenever it is necessary to increase pH of the treated water.

Diaphragmatic Cell Performance

In addition to the principal electro-chemical reaction that takes place at the electrodes, the high intensity of the electrical field at the electrode surface imparts a degree of electro-meta-stability to the water and its dissolved salts, increasing its ORP in the order of -800mv and + 1200mv respectively in the two streams.

This meta-stable condition has been found to remain for periods of up to 72 hours after treatment and even longer. All the while retaining an inherently higher chemical reactivity and activity for this period of time  (when activated solutions are properly stored they remain sporicidal and biocide for up to 6 months and still biocide for up to 12 months). The increased ORP enhances the solubility, dispersive and reactive properties of the water and its dissolved salts by a marked degree and is a significant indicator of biocide potential.

Properties of these solutions depend on the electric characteristics of the power supply and chemical composition of the treated solutions. The pH level of the solutions synthesised is controlled in the range pH 2.0-13.0, it is adjustable and can be set-up for specific parameters.

Electrolyzed Water Solutions

Our anolyte generators produce different modes of Electrolyzed Water solutions (anolyte and catholyte), depending on the working current strength, velocities of stream of electrochemically treated water and its distribution in anode and cathode chambers. Each of these are explained further below

A - Acidic Anolyte

Acidic Anolyte can be used wherever there is a need to disinfect or sterilise, in applications where the pH is unimportant and where there is no danger of corrosion. Anolyte is a very powerful disinfectant against all bacteria, viruses and algae even when it is diluted in water or sprayed in the air.

Regime Active Chlorine mg/l pH ORP mV (redo-potential) Type of Anolyte generator
Acidic Anolyte ~500-700 2.0 - 3.5 ~1000 - 1200 Any unit designed and set for generation of acidic Anolyte

Acidic Anolyte is a colorless transparent biocidical liquid with a strong chlorine smell. It consists predominantly of chlorine (Cl2) with low Ph and high ORP which all give it superior sporicidal and biocidal activity.

Active substances conform to EC 98/8 and 03/2032 concerning the placing of biocidal liquids on the market.

Active Substances Symbols Wt/vol % CAS-No EINICS-No
Sodium Chloride NaCl 0.26 % 7647-14-5 231-598-3
Chlorine Cl2 0.05 % 7782-50-5 231-959-5
Water H2O 99.69 %

ANK - Neutral Anolyte

Neutral Anolyte is used wherever pH is important (corrosion) and where possible evaporation of active chlorine cannot be avoided. Neutral Anolyte is very effective against bacteria and viruses and is mostly used to disinfect swimming pools, drinking water or other water sources. Besides the applications Neutral Anolyte is widely used to disinfect / sterilise objects (floors, wall, tools, foodstuff, etc.).

Regime Active Chlorine mg/l pH ORP mV (redo-potential) Type of Anolyte generator
Neutral Anolyte ~500-700 ~5.5 - 8.5 ~700 - 900 Any unit designed and set for generation of ANK-Neutral Anolyte

ANK - Anolyte is a colorless transparent biocidical liquid with a slight chlorine smell. It consists predominantly of Hypochlorous acid (HClO) and Hypochlorite ion (OCl-) which give it superior sporicidal and biocidal activity.

Active Substances Symbols Wt/vol % CAS-No EINICS-No
Sodium Chloride NaCl 0.26 % 7647-14-5 231-598-3
Hypochlorous Acid HClO 0.05 % 7790-92-3 232-232-5
Water H2O 99.69 %

K - Catholyte

Alkaline Catholyte has a pH between 11 and 13 and can be used for flocculation (e.g. of heavy metals), coagulation, washing, extraction. Furthermore this solution can be used to wash wounds (instead of using iodine) and wherever there is a need to increase pH level of the water to be treated.

Regime Active Chlorine mg/l pH ORP mV (redo-potential) Type of Anolyte generator
Catholyte 0 11 - 13 ~800 - 900 Any unit

Product Comparison

Disinfectant Description Advantages Disadvantages
Chlorine (Cl2) Used in a gaseous state, requires strictest safety measures
  • Efficient oxidant and disinfectant
  • Efficiently eliminates tastes and odors
  • Featured with aftereffect
  • Capable of controlling the growth of algae, biological slimes and microorganisms
  • Decomposes organic contaminants (phenols...)
  • Iron and magnesium oxidant. Decomposes hydrogen sulfide, cyanides, ammonium and other nitrogen compounds
  • Strict requirements for transportation and storage
  • Potential danger for health in case of a leak. Formation of disinfection byproducts, such as chloroform. The MAC in water will be increased in the near future from 60 mkg/l up to 60 mg/l because there was no proof of direct action of the chloroform on DNA.

Chlorine - containing substances

Hypochlorite (ClO) Used in liquid and granulated forms (trade concentration - 10-20%), can be obtained on site, electrochemically
  • Effective against most of pathogene microorganisms
  • Relatively safe during storage and use
  • When on-site generated, does not require transportation and storage of chemicals
  • Ineffective agaist cysts (Giardia, Cryptosporidium)
  • Loses its activity during long-term storage
  • Potential danger of gaseous chlorine emission dunung storage
  • Forms trihalomethane. When on-site generated, requires either immediate use or, in case of storage, special measures to purify the initial water from heavy metals ions. When on-site generated, NaCIO solution with the active chlorine concentration less than 450 mg/l does not form chlorates during storage
Chlorine Dioxide (ClO2) On-site generation only. The most effective disinfectant and strongest oxidation agent among all chlorine-containing ones
  • Operates in low doses
  • Does not form chloramines
  • Does not facilitate trihalomethane formation
  • Destroys phenols - source of unpleasant taste and odor
  • Effective oxidant and disinfectant for all types of microorganisms, including cysts, (Giardia, Cryptosporidium) and viruses
  • Does not form bromides from bromates
  • Facilitates removal of iron and magnesium from water by means of their quick oxidation and precipitation of oxides
  • On-site generation only
  • Requires transportation and storage of chemicals
  • In reaction with organic impurities forms nonorganic byproducts
  • Forms chlorates and chlorite ions
Chloramine (NH2Cl) Formed during the reaction of ammonium with active chlorine. It is used as a disinfectant of a prolonged activity
  • Features stable and long-time aftereffect
  • Facilitates removal of foreign taste and odor
  • Reduces the level of trihalomethane and chlorine-organic acid generation
  • Prevents formation of biological slimes in distribution systems
  • Weak disinfectant and oxidation agent compared to chlorine
  • Not effective against viruses and cysts (Giardia, Cryptosporidium)
  • Considerable dosages and prolonged contact time are required for disinfection
  • Dangerous for patients using dialyzers, because it is capable of penetrating the dialyzer membrane and effect erythrocytes
  • Forms nitrogen-containing byproducts

Alternative Substances

Ozone (O3) Has been used for several decades in some of European countries for the purpose of disinfection, elimination of color, for the taste and odor control
  • Strong disinfectant and oxidation agent
  • Very effective against Giardia, Cryposporidium and any other pathogenic microflora
  • Facilitates removal of turbidity from water
  • Removes foreign tastes and odors
  • Does not form chlorine containing trihalomethanes
  • Forms byproducts, including: aldehydes, ketones, organic acids, bromine-containing trihalomethanes, (bromoform inclusive), bromates (in presence of bromides): peroxides, brom-acetic acid
  • Necessitates the use of biologically active filters to remove byproducts
  • Does not ensure residual disinfection effect
  • Requires significant initial expenses for the equipment
  • Considerable expenses for operators` training and installation support
  • When reacting with organic compounds, ozone disintegrates them into smaller components, which could become a feeding media for microorganisms` growth in water distribution systems
Ultraviolet (UV) Explosure of water to UV rays capable of killing various types of microorganisms
  • Does not require storage and transportation of chemicals
  • Does not form byproducts
  • No residual effect
  • Not efficient against cysts (Giardia, Cryptosporidium)
  • Requires considerable expenses for the equipment and technical maintenance
  • Requires considerable operational (power) expenses
  • Disinfection activity depends on the water turbidity, its hardness (sediments on the bulb surface), precipitation of organic impurities on the bulb surface, and deviations in the power supply, which effect the wavelength variation

Electrochemical Activation

Anolyte Electrochemical activation of brine solution in a membrane electrolyser
  • Strong disinfect and oxidation agent
  • Very effective against all kinds of bacteria and viruses
  • Highly effective as sporicidal agent
  • Effectivly eliminates bad tastes and odors
  • Removes biofilms
  • Significantly less formation of chlorine compounds, halogens and TMT
  • No toxic by products: clorites (ClO2) and clorates (ClO3)
  • No acute or chronic toxity when diluted in water
  • Low cost
  • No transport or storage problem
  • Easy and safe storage and handling
  • Ventilation might be required in the installation room to remove fumes