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Established over 25 years ago, WPL is recognised as an international leader in engineering design, manufacture and supply of packaged wastewater treatment process solutions. Offering standardised products and bespoke process solutions for the cost-effective, on-site treatment of wastewater treatment, WPL has delivered on-site process solutions to the domestic, commercial and industrial markets globally. WPL ensure that wastewater treatment plants are designed and proven to exceed all current or proposed discharge consent standards enforced by the UK Environment Agency, SEPA or other regulatory bodies, the directors, managers and staff are committed to ensuring adherence to the following: ISO 9001 certification; OSAS 18001:2007 certification and ISO 14001 certification.


Miss Lianne Ayling
Units 1 Aston Road



To treat the industrial wastewater at a microbrewery in North West Scotland, a WPL below ground packaged wastewater treatment solution was specified to offer low visual impact and meet stringent discharge standards when providing off mains drainage.

Ondeo Industrial Solutions, who knew of WPL through previously working with Scottish Water, were commissioned by Fyne Ales to deliver the turnkey design and build project for their brewery. Ondeo Industrial Solutions chose the bespoke configured WPL HiPAF Modular in the latter half of 2014 to work with their overall solution.

Due to the rural location and lack of nearby municipal works capacity, Fyne Ales has to treat its own brewery industrial wastewater so it can be safely discharged into the surrounding environment. Previously this process was via a septic tank, however due to expansion of the brewery, they required an upgrade.

The client's brief was to ensure there would be minimal visual impact upon the beautiful surrounding location and view from the family home located nearby. This was essential to the requirement.
Other challenges included access to the installation site which was located down a very rural singular track road. The industrial solution also needed to take into account the highly fluctuating flows and loads during the industrial process.

The treatment plant had to be designed to manage the flows and loads parameters stated below to meet a SEPA effluent discharge standard of 40mg/l BOD, 50mg/l TSS, (no ammonia removal considered).

WPL proposed a 2 tank WPL HiPAF Modular packaged treatment plant to Ondeo, to ensure there was sufficient biological capacity to treat the Biochemical Oxygen Demand (BOD) to the required SEPA standards.

The compact packaged design allowed for easy transportation to site and the below ground installation meant low visual impact on existing views of natural beauty.

Configured design of the WPL HiPAF Modular:

· Modular HiPAF (two tank system) including:
-Primary/SAF in tank 1
-SAF/Humus Filter Settlement in tank 2

· Duty Stand by blower - for process reassurance, to increase air supply to potentially overcome build-up of biofilm which can be caused by higher BOD concentrations

· Control panel - controls the operation of the plant.

· Extra large kiosk - discreet, weatherproof, acoustically lined.

WPL HiPAF Modular Optional Extras:

· Stand-by side channel variable speed drive blowers c/w motor, air distribution manifold, kiosk and control panel upgrades to compliment the duty side channel variable speed drive blower.

· Alarm with kiosk mounted beacon in the event of failure.

· Battery back-up to indicate mains failure.

· Factory wired tubular anti-condensation heater with thermostat in kiosk.

· Additional acoustic lining for kiosk.

Andrew Haywood, Utility and Industrial Sales Manager, states "Ondeo chose our process solution to support their overall objective of the client's brief, as WPL is regarded as a high specification supplier to the UK water utilities, and has tried and tested below ground reference sites that suited the clients aspirations."

The WPL HiPAF (High Performance Aerated Filter) brand name references the unique hydraulic profile which works within the submerged aerated filter (SAF). The benefit gives a stable robust biomass growth during high or low flows meaning WPL is offering higher treatment efficiencies over other similar solutions on the market.

This robust biological treatment process is backed by proven WPL SAF technology based on 25 years empirical data offering treatment for carbonaceous removal, nitrification and de-nitrification (Total N) when strict standards are required.

Andrew Thomson, Project Design Engineer from Ondeo stated 'The type of treatment the HiPAF unit provides was a key advantage over other competitors' treatment solutions. The fixed film aerated SAF offered a robust solution to treat the fluctuating high strength BOD effluent.'

For further information please email WPL Ltd

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