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Whipsnade Wild Animal Park

Inflow type

Treatment type

Treatment type

Screening, package treatment plant and reed beds; attenuation ponds and holding tanks; treated water return re-circulation

Reed beds

Sequential terraced

Substrate hydraulic permeability (ideal)

10<sup>-3</sup>m/s to 10<sup>-4</sup>m/s

Minimum oxygen flux / influent BOD ratio

1.5:1

Discharge - BOD5

<20 mg/l

Discharge - N-NH3

<5 mg/l

Installed pumps

Wilo-Drain TP 40 S

Project cost

Approx. &pound;750,000

Phase 1 commencement

May 2004

Phase 1 completion

September 2004

Phase 2 commencement

January 2005

Phase 2 reed bed planting

May/June 2005

Phase 2 completion

August 2005

Phase 3 anticipated commencement

Q4 2005

Phase 3 anticipated completion

Q1 2006

Client

Zoological Society of London

Regulatory body

Environment Agency

Main contractor

Alpheus Environmental

Civil engineers

Clarets

Consultants

RSK ENSR

Pumps

Wilo

Other contractors

Waterproofing Services; Merton Hall Pond
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