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.




Offshore Oil Production and Pumping Platforms

For the chlorination of wastewater, firewater, sewage, gray water and potable water services.

A hypochlorite generator is placed on the platform and is equipped with a number of outlet connections to treat the various dosing requirements. On oil production platforms where the hypochlorite generator is to be placed in a hazardous location, the hypochlorite generator is installed in a sealed purged and ventilated housing. Seawater from the platform’s seawater services pumps is used to provide the seawater for the production of hypochlorite and the hypochlorite produced at 1500mg/l is used to dose the systems.