Xylem brand WTW’s specialist knowledge of manufacturing measurement technology for water analysis has overcome the potentially costly and time-consuming process of upgrading aeration systems.
One municipal water client turned to Xylem when it proposed switching from a jet aeration to fine bubble aeration system to treat the influent at its plant, a blend of domestic and high strength industrial sewage.
While the transfer promised to reduce energy demands, the company needed to be able to confirm through testing that the replacement method was effective.
Xylem, experienced in handling all aspects of water and wastewater in the municipal sector, designed and installed a pilot plant that accurately measured effects at every stage of the process.
Placed beside the sequential batch reactor under investigation, the pilot tank was fitted with FBDA diffusors at the same grid density as the proposed system and a blower providing a proportional variable air flow.
The trial also tested the dissolved oxygen sensor by remote monitoring. As a result of these measures, says the company, bleaching was minimised without impacting response and accuracy – increasing operational life.
The total trial time was seven weeks, covering operational phases at various air flow rates and feed pump cycle times.