1. SUDS Research Dr Martin Mansell School of Engineering and Science University of Paisley

2. Current Research Frequent Storm Storage Unit Water Balance of Paved Surfaces

3. Frequent Storm Storage Treatment Unit Plan void formers 10mm gravel sand porous pipes geotextile membrane central chamber area for 2D modelling

4. Frequent Storm Storage Treatment Unit Section

5. Storage Unit Rig

6. Water Levels in Tank

7. Water Levels in Sand and Gravel

8. Water Quality Results LocationTime (mins.) pHSus. solids (mg/L ) BOD (mg/L) COD (mg/L) inlet1.74.77591547 inlet3.84.8850234386 outlet9.93.591171126 outlet553.622.8< 3<10 outlet2393.592.4< 3<10

9. Metal Concentration

10. Salt Concentration

11. Issues to be Resolved Sediment in pipe

12. Issues to be Resolved Loss of Voids Treatment Efficiency (esp metals) Groundwater interaction Surcharging Long term Maintenance

13. Water Balance Principles Depression storage Infiltration Paved surface Soil Filter Drain Runoff Evaporation Precipitation infiltrationjoint flow

14. c) Rough relief surface E I R MC(%) b) Medium relief surface E I MC(%) Depth Infiltration MC(%) Depth Evaporation MC(%) Depth Infiltration and Evaporation profile for different surface types a) Smooth relief surface E I R Surface Texture

15. Infiltration EvaporationPrecipitation Runoff Brick weighing to measure the infiltrated water Cross section of brick slab investigated Measurement of Water Balance under Field Conditions

16. 5 Slabs under Field Conditions Brick, Concrete, Asphalt slabs Weather Station Rainfall raingauge Runoff gaugeRespective cubes

17. Water Balance Model Q1 Q2 S2S2max Infiltration (I) Precipitation (P)Evaporation (E) Runoff (R) S1S1max Joint Flow (J)Q1 Cross section of paved surface

18. Water Balance Model