In-ditch Polishing Point

We’ve designed a passive treatment point combining Floc Mat®, Silt Wattle and Silt Mat™ to capture fine silts in drainage channels. The specific layout and product combination is a result of years of refinement of working with the construction industry to control silt pollution on site.

No. This system works passively with flowing water, reducing carbon footprint and maintenance costs.

Our In-ditch Polishing Points can be created in ditches, swales, culverts or any location where silty water collects or flows. This technique has been designed to make the most of existing topography and other infrastructure readily available on site.

The mats can be fixed with metal stakes (soft beds) or sandbags (hard beds). Watch our installation video or download our CAD drawings for further advice.

Our In-Ditch Polishing Point should be installed in shallow, slow flowing channels with gentle gradients (up to 3 degrees) where water depth typically does not exceed 300 mm. For slopes greater than 3 degrees, use check dams to slow water.

The system is designed so that Floc Mats® are the first point of contact, treating fine suspended sediment as runoff enters. Flow is then slowed further by Silt Wattles, allowing the Silt Mats™ to capture and retain the treated sediment. We recommend to line or seed the ditch to prevent scour.

Yes. We regularly support clients with on-site assessments, installation advice, pollution prevention training and compliance planning. Contact us to arrange a visit or speak to one of our technical specialists. We happily provide practical advice and support to ensure the right product is used effectively.

• In-ditch Polishing Point: consists of just Floc Mats, Silt Mats and Silt Wattles for a capturing and separating silt from flowing water. It is designed to ‘polish’ the water rather than our other treatment alternatives better designed for bulk drop out.
• In-ditch Treatment Point: includes the use of Gel Flocculant to bind fine silt particles to treat the water, as well as our mats which capture the suspended material while the surface water flows over them.