Full water harvesting, irrigation and recycling system for nurseryes

1. Welcome to Salix, Croxton Park

2. House Keeping
- No Fire Alarm Expected
- Refreshments
- Toilets

3. Offices
Construction
Teams
Croxton Park

4. Croxton Production
• 20 Acre (5 hectare) nursery
• UK Native wetland &
wildflower plant producer
• Flora locale approved
supplier.
• Cell/Pot Plant Production
• Coir rolls and pallets

5. Location of Cleanleach

6. UK Cleanleach Reciplical: Full Water
Harvesting, Irrigation and Recycling
• Rainwater Collected from
Polytunnels
• Stored in Tanks
• Used to irrigate pot grown
plants
• Cleaned in Cleanleach
System
• Recycled back into tanks
• Main Differences: Drainage
Layer under Sand filter &
Floating Reedbed

7. 1m
24m
CleanLeach: DETAIL 4: General Arrangement: NTS
Gravel
Filter
Outlet
Pipe
(Centre)
Sand
Filter
5% fall
in last
3m of
bed
SSF Gravel
Reedbed
Floating Reedbed
Chamber
(By Others):
Control Flow
to either bed
(split flow)
35m (1% Fall)

8. Gravel Filter (Wrapped in
Terram 1000)
Outlet
Pipe (Set
50mm below
bottom and
sealed around
pipe)
Mypex on
surface Sand
Filter
Pond Liner to Seal
Entire Bed (as per
existing pond lined
beds).
Drainage
Geotextile
CleanLeach: Detail 3: Close up Sand Filter Outlet & Geotextile Layers: NTS

9. Drainage Geo-composite

10. Gravel Filter (Wrapped in
Terram 1000: 1m wide)
CleanLeach: Detail 6: Section Of Gravel SSF Reedbed: NTS
Outlet
Pipe (Set
50mm above
gravel and
sealed around
pipe: Need to
be able to
adjust flow to
back up water
depth)
Gravel
Pond Liner to Seal
Entire Bed (as per
existing pond lined
beds).
Inlet
Pipe (Set
70mm above
gravel and
sealed around
pipe)
1% Fall
0.5m
100mm
Freeboard

11. CleanLeach: Detail 7: Section of Floating Reedbed: NTS
Outlet
Pipe (sealed
around pipe:
Need to be
able to adjust
flow to back
up water
depth)
Floating Reedbed
Pond Liner to Seal
Entire Bed (as per
existing pond lined
beds).
Inlet
Pipe (sealed
around pipe)
1% Fall
0.45m
200mm
Freeboard
Open Water

12. Construction

13. Construction:
Mid June to End August
• Good weather
during construction
• Driest September
Recorded
• Very Wet October

14. Installation of Geo- Composite Drain

15. Xlyit Fibres Added to Improve Soil Structure
& Soil Drainage (Fine Sand Compacts When Disturbed)

16. Completed Layers

17. Flow Distribution

18. SSF Gravel & Floating Reedbeds

19. SSF Gravel & Floating Reedbeds

20. Plant Species Grown in Coir Mats
• Phragmites australis
• Carex acutiformis
• Iris pseudacorus
• Lythrum salicaria

21. State of the Art: EWWTA, CWA, ESWEG
• Phosphate Capture
• “Passive Water
Treatment”
• Whole Life costs
• Sustainability; Waste &
Energy Costs
• Maintenance &
Refurbishment Costs
• Water Framework
Directive “Driver”