SEEPEX have supplied several pumps to Bristol Water at Purton as part of a new electro-chlorination plant. The plant was installed to generate sodium hypochlorite, producing the large volumes needed for water treatment on site, and to solve the problems associated with Zebra Mussels in water intake pipes. Bristol water wanted to reduce the amount of stored chlorine, therefore improving safety on the site.
Sodium Hypochlorite pumping has several challenges which have all been overcome by SEEPEX progressive cavity metering pumps. The pumps had to provide a steady, pulsation free flow of hypochlorite in relatively large volumes with high degrees of accuracy, providing reliable operation, ease of maintenance and low lifecycle costs.
SEEPEX supplied pumps capable of accurately metering quantities between 500L/hr to 3m3/hr, with special designs and materials of construction to ensure suitability for hypochlorite pumping.
Progressive cavity pumps offer many advantages over traditional dosing pumps:-
- Pulsation free flow – no pulsation dampeners required
- Materials of construction suitable for corrosive chemical metering
- Accurate linear flow – controlled by one variable, pump speed
- Easy calibration – pump speed adjusts flow rate
- Flow meters and non-return valves not necessary – reduced system costs
- Vapour locking is not a problem – can pump gas/liquid mixtures
Bristol Water recognised these advantages when installing their OSEC plant to meet the demand and capacity of their process through put.
For more information contact SEEPEX at www.seepex.com or 01935 472376
