INTRODUCTION
Electrichlor on-site hypochlorite generators provide sodium hypochlorite to control marine growth in industrial cooling water equipment, water/wastewater treatment in water supply systems and for refineries and offshore production platforms in Class 1, Division 1 & 2 hazardous locations. Electrichlor hypochlorite generators are suitable for indoor locations, or outdoors on a concrete foundation with a sunshade. However, in freeze conditions, indoor locations are recommended. Due to elements in seawater that can be affected by electrolysis, seawater is not recommended as the medium for producing hypochlorite for drinking water applications.

On-site hypochlorination has been used effectively for many years in the power industry to control marine growth in the pipework of cooling water systems. Generally seawater-cooling systems for power stations utilize on-site hypochlorinators to control algae and mussel growth that can block intake systems and severely impede the flow of seawater to condensers and heat exchangers. These systems divert a small seawater flow to an on-site hypochlorinator to produce sodium hypochlorite, generally at levels between 1000 and 2000 ppm which is well below the threshold level for hazardous material, (10,000 ppm), mandated by the EPA. By keeping a constant dosing at 1 ppm of chlorine in the cooling water system, marine growth is impeded from clogging cooling water systems.

The application is not limited to sea water. By using salty water in place of seawater, fresh water supplies can be effectively chlorinated using the same technology without the dangers associated with gaseous chlorine.




Power Stations, Refineries, Chemical & Industrial Plants

For chlorinating seawater cooling water systems to mitigate marine growth in pipework, heat exchangers and condensers. Generally, hypochlorite generators are installed adjacent to the seawater cooling water pumps and take their seawater feed from the pressure side of the cooling water pumps. Hypochlorite at 1500mg/l is piped to the pump suction to ensure the whole cooling water system is treated.