1. SDS Aqua-Xchange – bringing new opportunities to treat road runoff

2. SDS Aqua-Xchange – flexible, reliable and effective

3. Use SDS Aqua-Xchange as a layer in filter drains to remove Copper & Zinc from road runoff

4. Use SDS Aqua-Xchange under dry swales where there is a particular need to remove soluble pollutants
From Cambridge SuDS Design & Adoption Guide

5. Metals retention efficiency2
Installation Specifications used for testing
The example specification (as measured in test1): for the treatment of an impermeable catchment area measuring 50m2, a 250mm deep layer of Aqua-Xchange measuring 0.5m2 is required.
Flow rate per hectare
Rainfall Depth
Flow rate per 50m2
Treatment flow rate
75 l/s/ha
27mm/hr
0.375 l/s
Pollution retention flow rate
111 l/s/ha
40mm/hr
0.556 l/s
Treatment efficiency
Metals retention efficiency2
Zinc capture
99.8%
Zinc retention
99.6%
Copper capture
99.5%
Copper retention
100.0%
1 Tests were carried out in accordance with the British Water Code of Practice
2 Metals retention under the influence of road salt application

6. Collection, treatment, storage and release
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Jo Bradley
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Collection, treatment, storage and release