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On-site sludge removal is in the bag

On-site water treatment and sludge removal processes have been eased by the launch of the new geotextile Siltstoppa Dewatering Bags, according to product developer Siltbuster.

The Siltstoppa Dewatering Bags, which are available in a number of different sizes, can be supplied on their own to sit on a drainage area, or mounted in their own skip or hook-lift roll-on roll-off container for ease of transport for disposal. Siltbuster says the bags can also be used as part of a complete water treatment package with water clarifiers and settlement units, automatic de-sludging systems and sludge conditioning/pre-treatment systems.

“Siltstoppa Dewatering Bags use a technology we’ve been using for some time and given the hassle and costs associated with tankering liquid waste off site, they’ve more than proved their worth,” said Siltbuster managing director Richard Coulton.

“It’s a passive technology requiring no power. The sludge is conditioned to make the solids bind together and separate out the water, similar to curdling milk. It’s just a case of filling the bags and letting the bleed water drain out through the geotextile fabric to be collected and pumped back into the water treatment plant, captured and reused or discharged off site.

“These bags are the ideal solution to dewater the water treatment sludge on a construction site so it can be mucked away with the other materials.”

The settled solids remain in the bag and dewater, so their volume reduces. When the Siltstoppa bag is full it can either be split open on site and the dewatered solids removed by excavator, or similar equipment, leaving only disposal of the geobag remnants. Alternatively, the skip container and filled geobags can be taken off site for disposal.

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