Northumbrian Water last year completed the construction at Waren Mill of an extraordinarily flexible, low carbon footprint, dramatically low Total Life Cost Aero-Fac® wastewater treatment system supplied by Gurney Environmental.
Extraordinary Flow Variation Capability
Process engineers at Gurney Environmental developed this specific Aero-Fac® wastewater system for Northumbrian Water to meet a normal winter population of 200, but rising to a summer population of almost 3,000! This dramatic variation in flow from winter to summer can create serious issues for many WwTP designs. At this particular location, Northumbrian Water had been tankering away excess wastewater flows over the 150-pe SAF design with an associated high operating cost and carbon footprint.
In the analysis by Northumbrian Water’s consultants, Aero-Fac® offered a well-proven and time-tested system with the flexibility and robustness of operation to be able to cost-effectively and easily accommodate this large flow variation.
In the past year, especially with the covid pandemic, the nearby caravan site was full, so the WwTP had a high load summer. However, with the new Aero-Fac® system, Northumbrian Water have finally had a year with no tankering!
Significant OPEX Cost Reductions
While Aero-Fac® handles massive flow variations without significant operator intervention, the unique wastewater treatment system also utilises renewable wind energy and extremely low operating and maintenance cost aeration systems. Total annual operating costs are typically around 85% less than conventional activated sludge systems.
Aero-Fac® also requires no sludge handling, removal, testing or disposal by completely self-digesting sludge within the system itself, thereby providing a truly long-term sustainable, low TOTEX, complete and total on-site solution.
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Understanding Aero-Fac® Technology
- The all-stainless diffused air system is designed to normally be in the off-state, activated automatically by a dissolved oxygen monitor only when required by increased demand.
- The diffusers are self-cleaning and require virtually no routine maintenance. The low-pressure fan blowers have a very low wear factor with minor ongoing routine maintenance.
- The Aero-Fac® WwTP is also equipped with wind-powered SERIES 3 aerator/mixers that provide constant aeration and balanced loading throughout the treatment cells with zero-to-low energy costs. These units provide the supplemental oxygen and overall cell optimisation for early-years or off-peak low-flow/load situations.
- When oxygen demand exceeds their capability, the powerful diffused air system automatically kicks in to handle larger flows/loads when and if needed.
Proven Track Record of Performance
Several Unique Wastewater Treatment Solutions from Gurney Environmental
Gurney Environmental offer several systems and variations of the Aero-Fac® system that include:
The very unique and economical Accel-o-Fac® system, as an example, offers a zero-to-low energy solution that provides incredibly low OPEX with very low initial CAPEX. In many cases, no energy costs plus no sludge handling costs or complexities make Accel-o-Fac® extraordinarily sustainable and economical initially and long-term. Accel-o-Fac® has been used for over a decade in the UK at such locations as Holkham Hall and Village.