Clearing The Air

Advancements in salt chlorine-generation systems for commercial use are on the rise, and more aquatic facilities are embracing this technology. As the demand grows, ECG manufacturers are providing technology that achieves the most efficient and effective means of chlorination in the public (commercial) pool arena.

While the popularity of chlorine generation is mounting, there is often a lack of understanding about how the system operates–specifically, how to maintain a “salt” pool and the conditions necessary to ensure successful operation year after year.


Safety is the number-one advantage of installing an ECG system. It provides a safe and reliable method of sanitization; there is no need for bulky, heavy containers of powdered chlorine or tablets, or liquid bleach carboys.

There is no possibility of a chlorine leak or inexperienced personnel mixing chlorine with other dangerous chemicals. Erosion feeders–the cause of many accidents–are eliminated from the process.

The installation of the ECG system has proven to eliminate exposure to gaseous fumes, which has plagued operators for years. Facility safety and risk reduction are key reasons to consider this system.

Simple To Operate

Very few chemical adjustments are necessary. Organic sanitizers–such as trichlor–have a pH range of 2.8 to 3.5, which inherently lower the pH of the pool water, requiring the addition of sodium carbonate (soda ash) to raise the pH. In some cases, however, it will be necessary to lower the pH with the addition of muriatic acid or sodium bisulfate.

Easy Installation

Another ECG benefit is that the equipment installation is easy and does not take up much room in the mechanical area. There are only four components to the system: a power supply, an electrolytic cell, a flow-protection device and, of course, salt, which is dissolved in the pool water.

It’s important to study and understand the new technology. Photo Courtesy Of National Swimming Pool Foundation

Bathers Love It

Finally, patrons can enjoy a feeling of soft, silky water without red eyes, itchy skin, faded swimwear, or a chlorine smell. They cannot taste the salt, as the concentration range is 3,000 to 3,500 parts per million (ppm)–below human taste levels.

The comfort level of pool users and employees is improved, since there is no chlorine smell in indoor installations.


Recreational Water Illnesses (RWI) are a major threat to visitors of aquatic facilities, and thus a liability to the facility itself. Outbreaks of Cryptosporidium, Pseudomonas aeruginosa, E. coli, Staphylococcus aureus, and Giardia are on the rise.

This has compelled operators to reach out to secondary disinfection systems, such as Ozone and UV, to help kill these chlorine-resistant microorganisms.

RWI Protection

Aquatic managers seek to eliminate risks by improving public safety, enhancing water quality, and reducing operating costs. This is driving the growing acceptance of Ozone technology as an effective means to prevent RWI.

This momentum has also spurred several manufacturers to interface their traditional sanitizers with Ozone technology, delivering the ultimate water-quality treatment.

Ozone Production

There are two methods of Ozone production: Corona Discharge (utilizing electrical energy) and UV (utilizing light energy). Either method must be introduced into the circulation system downstream from all operating equipment, and before the injection point of the residual disinfectant.

Corona Discharge generators produce a much higher concentration and quantity of Ozone as compared to the UV Ozone generators. With the Corona Discharge method, as the air is exposed to an electrical current, a ring of energy is created, which looks like a crown (corona). As the air (or oxygen) flows through the corona, the oxygen molecules are split apart and then combine again to form ozone (O3).

Systems are designed so that, when the pump is turned off, the ozonation process ceases.

Healthier Option

Page 2 of 3 | Previous page | Next page

Related posts:

  1. Electroylitic Chlorine Generators – Answer Key
  2. Electrolytic Chlorine Generators – Test
  3. Water Park Chemistry – Test
  4. Water Park Chemistry – Answer Key
  5. The Science Of Supplemental Disinfection Systems
  • Columns
  • Departments