Tesco Extra Havant - Rainwater Harvesting Case Study

Ecozi Ltd, Unit 2 Churchlands Business ParkUfton Road, HarburyCV33 9QX01926 614 [email protected]

Ecozi Case Study

Tesco Extra Havant - Rainwater Harvesting

Client: TescoBuilding Type: Food and retail storeRoof: 100% mono pitch with sheet cover and syphonic drainageCatchment Area: 800m²Rainwater Apps: 14 WCs for public and staff use and 2 home delivery van washdownpointsBuilt: 2009


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.

http://www.ecozi.com/

About the Project:

Rainwater Harvesting Requirements

This second generation Tesco store is built on columns to provide a larger store area and car parking than the original store.

To meet the planning conditions allowing for the increase site density the SUDS plan required rainwater harvesting. Build by Vinci with Essex Services as the M&E contractor Ecozi provided design assistance for the scheme that had to utilize an above ground tank due to the high density piles for the building columns.

The rainwater applications were WCs (public and staff and 2 home delivery wash down points). Due to the 24hr operation 7 days a week the rainwater system required robust design with flexible architecture to cater for several eventualities.


Project Challenges:

The mechanical plant room was built off-site and craned on to the roof. The rainwater if lifted by a tank located pump into the specialized hybrid rainwater booster set—HyproDuo. The rainwater is kept in a stainless steel 280L cylinder and pressurized as required on demand to supply the WCs and wash down points. A fine particle filter and UV filter was specified for additional treatment.

The hybrid system provides the best design available and enables the user to operate on mains water without the main tank being in service. This is especially useful in the event of contaminated water in the main tank and tank servicing. Keeping the main pressure pumps in the plant room also provides much simpler and easy maintenance.

The advanced HyproDuo appliance is factory tested and has advanced logic control to enable continued operation even with faults or failed pump(s) The surface mounted tank is sectional, insulated GRP with a nominal 12,000L capacity.

Two stainless steel pre-tank filters remove debris from the syphonic drainage system . Only 800m² of the roof area wasavailable due to the roof type and risk of contamination from the partially trafficked roof by vehicles. Ecozi provided system design, supply, installation and commissioning services.


Contact Details:

Ecozi LtdUnit 2 Churchlands Business ParkUfton RoadHarburyCV33 9QX

Tel:01926 614 002Email: [email protected]

Visit our website at: www.ecozi.com

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Tesco Extra Havant - Rainwater Harvesting Case Study

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Transcript of Tesco Extra Havant - Rainwater Harvesting Case Study