The system will reduce risk from bulk storage of liquid chlorine, the water and wastewater treatement product company says.
The improvements at Huntington Water Treatment Works in Chester, England, are part of a £3.6 billion investment by United Utilities across North West England.
The original project scope called for the construction of a new facility to store drums of liquid chlorine on site. However, the project team identified an alternative process that would eliminate the need to store hazardous liquid chlorine, reducing the risk to operators.
Severn Trent Services installed six ClorTec HCT-1500 units, which each have a production capability of up to 680 kg/day of chlorine equivalent. Overall the units have the potential to produce 4,080 kg/day of chlorine equivalent and so are able to produce the 3,360 kg maximum chlorine demand at Huntington in an operating period of 20 hours.
The ClorTec system operates by feeding a mix of softened water and brine at a 3 percent solution through electrolytic cells. A low-voltage DC current is applied and a 0.8 percent sodium hypochlorite solution is produced.