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Rainwater Harvesting for Midpoint Distribution Park
1. Ecozi Case Study
Midpoint Distribution Park, Minworth Case Study
Client: Prologis
Project: Midpoint Distribution Park, rainwater harvesting
Building Type: 14,000m² distribution centre
Roof: Curved metal sheet
Catchment Area: 650m²
Apps: 16 WCs for office staff
Sustainability: BREEAM - Excellent
Built: 2011
Ecozi Ltd, Unit 2 Churchlands Business Park
Ufton Road, Harbury
CV33 9QX
01926 614 002
info@ecozi.com
www.harvestingrainwater.co.uk
2. About Ecozi – Rainwater Harvesting Systems:
Ecozi is a specialist rainwater harvesting and grey water recycling system provider.
Ecozi design, supply, install and maintain water recycling systems throughout the UK for commercial and residential
customers.
Ecozi work to all industry standards and are members of the UK Rainwater Harvesting Association. With our
experience from installation, commissioning and maintenance the service levels offered by Ecozi are amongst the
highest in the industry.
Market leading German manufacturers are key supply partners to Ecozi, providing advanced reliable systems with low
risks to end customers.
Ecozi Ltd, Unit 2 Churchlands Business Park
Ufton Road, Harbury
CV33 9QX
01926 614 002
info@ecozi.com
www.harvestingrainwater.co.uk
3. System Requirements:
Bowmer and Kirkland were awarded a D&B contract for a new distribution building by the developer, Prologis. With a
minimum BREEAM target of Excellent B&K set about
consultation with Ecozi at an early stage in order to reduce the whole system cost for the provision of rainwater
harvesting. Ecozi were able to offer significant input in the system design to save on supply and installation costs. The
building was unusual in the basic design such that a complete gravity system, with no pumps could be installed.
Had Ecozi not been consulted early in the design program, the more common occurrence with design and build would
have been poor liaison with the different sub-contractors and mistakes or overall expensive installation costs. The
rainwater harvesting system was installed by B&K appointed contractors and Ecozi were employed on a supply and
commission basis.
Ecozi Ltd, Unit 2 Churchlands Business Park
Ufton Road, Harbury
CV33 9QX
01926 614 002
info@ecozi.com
www.harvestingrainwater.co.uk
4. Storage/Filtration/WC Water Distribution:
Storage
A 10,000L single piece GRP tank was lifted onto the roof of the internal office
block before the roof was complete. The load rating of the office roof on which
the tank stands was increased early in the build. The tank was supplied with
cradles for self supporting final location on the concrete base.
Filtration
The 650m² of collectable roof area is routed into a pre-tank filter located on the
internal structure above the inlet level to the storage tank. The gravity filter
requires cleaning every 6 months to maintain maximum efficiency of the
system. The pre-tank filter is connect with a bypass pipe in case of blockage
over the filter mesh. The bypass pipe also increases the flow capacity in the
even of heavy storm conditions to eliminate the risk of flooding.
The total area of the roof is 14,000m² but only a fraction of this is required to
provide optimum rainwater collection for the small number of occupants. The
early design consultation with Ecozi provided savings of several £’000 to
Bowmer and Kirkland.
WC Water Distribution
Water drops from the tank to the WCs via gravity flow. In the event that the
rainwater is less than the WC demand a mainswater top-up via a tundish
provides mainswater operation until the next rainfall. Excess water flow from
the tank and filter go immediately to the surface water drain.
Ecozi Ltd, Unit 2 Churchlands Business Park
Ufton Road, Harbury
CV33 9QX
01926 614 002
info@ecozi.com
www.harvestingrainwater.co.uk
5. Contact Details:
Ecozi Ltd
Unit 2 Churchlands Business Park
Ufton Road
Harbury
CV33 9QX
Tel:01926 614 002
Email: info@ecozi.com
Visit our website at: www.ecozi.com
Subscribe to our blog: www.harvestingrainwater.co.uk
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