Posted to News on 23rd Nov 2016, 00:00
Inverters cut water treatment energy bills
When Sri Lanka’s MAS Fabric Park wanted to reduce the current energy consumption at its waste water treatment plant, it looked no further than Invertek’s proven variable frequency drives technology, which has already seen savings of between 28,000 and 30,000kWh of energy every month.
Harsha Deraniyagala, deputy general manager for hydro and environment at the park which is situated in Thulhiriya, said: “We are delighted with the results as the Invertek installation is already returning an OPEX saving of about Rs 4.5million per annum, and the costs entailed will be paid back in just a ten-month period.
The park had been running with four 22kW rated recirculation pumps fixed inside the deep aeration tanks, with motors running for a minimum of 22 hours per day. The aim was to try to save at least 25% of the consumption by fitting variable speed drives. Inverters were also fitted to a 75kW aeration blower and 11kW high lift pump. The success means that the drives are now being considered for a sister plant.
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