Safe and easy
Using an automated system, a brine & water solution is prepared and passed through an anode/cathode electrode chamber, known as an electrolyser, where a low voltage direct current is passed through the solution, generating sodium hypochlorite and a small amount of hydrogen gas. The hydrogen by-product is diluted with a large volume of air in an enclosed ventilation system and is discharged safely to atmosphere.
The freshly generated solution is transferred to a day-tank and can then immediately be used and dosed via chemical dosing pumps to treat drinking water, wastewater or pool water.
On-site hypochlorite generation is safe and easy, using just salt and water and energy as its raw ingredients. The resulting generated hypochlorite solution contains less than 1% chlorine, which is below the hazardous threshold, so there are big health & safety and COSHH management benefits in using this method.
The main raw material, salt, is a common commodity item which is easy to acquire and competitively priced from numerous suppliers. In the UK and Europe there are abundant sources of high-quality salt, so the electrochlorination method can have a much reduced impact on the environment compared to using calcium hypochlorite, for example, which is usually imported from East Asia or North/South America.
Salt is of course easy and very safe to store, has an infinite shelf life, and generates very little packaging waste/recycling in comparison to using commercially available hypochlorites. For example, users of calcium hypochlorite products supplied in plastic drums can reduce their plastic waste by over 90% by switching over to electrochlorination. Because the generated solution contains less than 1% chlorine, you don’t need to conduct COSHH chemical safety audits or have a hazardous chemical storage area for the product. Also, as personnel are not required to handle or transfer chemicals the use of personal protective equipment is much reduced.
As a further important safety benefit, the generated liquid product is clear, free of sediment and non-scale forming, meaning that chemical injection points do not require any regular cleaning or maintenance by personnel; a task often considered to be a high-risk activity.