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Brighton & Hove WwTW Scheme

A £300m environmental improvement scheme bringing cleaner seas to Sussex

  • 2.5

    Kilometers long sea outfall

  • 95M

    Liters of treated wastewater

  • £300M

    Improvement scheme

  • Sussex, United Kingdom

    Sussex, United Kingdom

Wastewater treatment works treating 95 million litres of wastewater generated per day

Stantec worked collaboratively with Southern Water to deliver major environmental improvements at Brighton and Hove Wastewater Treatment Works in Peacehaven, East Sussex, UK. The Works treats the 95 million litres of wastewater generated each day to required European standards. The treated effluent is returned to the environment 2.5 kilometres off-shore.

Stantec designed the wastewater treatment works, Marine Drive pumping station, and Portobello pumping station. We were also responsible for the detailed design of the civil, architectural, and reinforced concrete works, the pumping station superstructures on the sewerage system, and the local sewer connections.

Environmental impact was a key focus in the planning approval process. Additionally, odour, noise, and visual impact were three main considerations. Stantec ensured that it took all environmental requirements into account when carrying out the detail design, working in collaboration with multiple designers and contractors who carried out assessments in the planning phase of the scheme.

The wastewater treatment includes a high-rate primary sedimentation process, a high-rate biological treatment process, screens and screenings processing, and grit and grease removal and processing. Indigenous sludge, plus imported sludges from other sites is anaerobically digested on site prior to dewatering. The biogas produced by the digestion plant is used in a CHP plant to produce electricity. An extensive odour control system extracts and treats odours linked to the treatment processes on site. The three-stage process, consisting of an acid and alkali treatment plus carbon polishing, is applied before the cleaned air is released through a chimney-like structure.

We designed this state-of-the-art wastewater treatment works to be sunk into the landscape to minimise its visual impact and covered by one of the largest green roofs in Europe so that it blends in with the surrounding landscape.

At a Glance

Offices
Client
  • Southern Water
Awards
Project of the Year at the 2014 Construction News Awards
Major Civil Engineering Project of the Year (Over £50m) - British Construction Industry Awards 2013
ICE Brassey Award for the best civil engineering plant in Kent and East Sussex 2013
Meet Our Team

Cath Schefer, Executive Vice President & Chief Operating Officer – Global

I’m passionate about bringing the combined knowledge and expertise of Stantec’s people across the world to deliver great projects for our clients and communities.
Cath Schefer Executive Vice President & Chief Operating Officer – Global Read More

Liz Chapman, UK Design Director

Innovation isn’t just about thinking up new ideas; it can also be about bringing ideas from elsewhere and adopting them.

Scott Jackson, Regional Director, Water

I have an open and honest leadership style which helps my team deliver innovative project solutions for our clients and communities.

John Ord, Business Director, Energy & Resources

The UK energy business is changing rapidly. We assist our clients across the industry to shape and improve transitional and future energy projects.
John Ord Business Director, Energy & Resources Read More

Craig McMaster, Head of Programme Management and Integrator Services

Supporting our clients create high performing enterprise structures for the efficient delivery of major capital investments is the foundation of my role at Stantec.
Craig McMaster Head of Programme Management and Integrator Services Read More

Timothy Williams, Strategic Growth & Business Development Director, Water

Communication at all levels, within and between organisations, is paramount to business success.
Timothy Williams Strategic Growth & Business Development Director, Water Read More

Jamie Woods, Regional Director, Water

Collaboration has always been at the heart of my approach – not just in technical delivery, but also business leadership.

Cath Schefer

Executive Vice President & Chief Operating Officer – Global

Liz Chapman

UK Design Director

Scott Jackson

Regional Director, Water

John Ord

Business Director, Energy & Resources

Craig McMaster

Head of Programme Management and Integrator Services

Timothy Williams

Strategic Growth & Business Development Director, Water

Jamie Woods

Regional Director, Water

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