aggregate industries img

Aggregate Industries improves water quality by supplying slowfil sand

  • 26 Jul 2017

  • Share

Garside Sands is helping to improve the water quality Glenfarg Water Treatment Works by supplying over 2,800 tonnes of Slowfil Sand.

The water treatment works supplies drinking water to over 180,000 customers in the Fife area, and purifies water using the slow sand filtering method.

Garside Sands, part of Aggregate Industries, was able to fulfil the requirement of a quality sand that would meet the acute industry standard for size, grading and colour, required to help with the production of safe drinking water.

Slow sand filtering takes place in a sand-filled container, in which the sand is initially submerged in water. The water allows the top layer of wet sand to gradually develop a biological ‘film’ made up of living organisms such as algae and bacteria. After this, the water filtration process can begin.

The surface biofilm is the layer that provides the most effective purification as the living organisms essentially ‘eat’ or attach to pathogens in the water, effectively stopping them from flowing down through the sand.

As water travels down – due to the natural pull of gravity – the underlying sand continues to provide a level of biological treatment, which lessens as the water reaches the bottom most layer of sand.

Brian McCulloch at Ross-Shire Engineering, who installed the system at Glenfarg Water Treatment Works said: “Garside Sands was fantastic in working closely with us and understanding what it was that we needed. They were able to provide a finely graded sand, which offered the right level of permeability to manage the removal of microorganisms and, so far, we are really pleased with the result.”

Grace Cosby, Sales Representative at Garside Sands, said: “If the sand is of high quality, we know that there filters can produce water that has a 90-99% bacterial cell count reduction. As such, we ensured that we spent the right amount of time in developing a sand that would help to both enhance and maintain the quality of water that slow sand filters will continue to produce for years to come.”

Garside Sands range has a high silica content, grain she and naturally occurring colour range. It’s exported all over the world for applications including water filtration, brick manufacture, energy processing and sports pitches.

Visit the Aggregate Industries website

Leave a Reply

More articles

Rinnai

Carry on caravanning with Rinnai - ideal for all commercial sites

Rinnai, the UK leader in hot water heating units and systems for all commercial and residential sites, has recently completed an installation at a caravan park and holiday multi-activity centre.

Posted in Articles, Building Industry News, Building Services, Case Studies, Heating Systems, Controls and Management, Heating, Ventilation and Air Conditioning - HVAC, Posts

  • Share
swisspacerimg_Fotor

Passivhaus tests the impact of SWISSPACER's warm edge spacer bars

Passivhaus Institute in Darmstadt recently found that SWISSPACER’s aluminium and warm edge spacer bars save homeowners a significant amount on energy bills.

Posted in Articles, Building Industry News, Building Products & Structures, Building Regulations & Accreditations, Research & Materials Testing, Sustainability & Energy Efficiency, Windows

  • Share
Ketley Brick

Ketley Brick passes rigorous freeze-thaw testing with flying colours

Ketley Brick has eased through rigorous industry freeze-thaw tests for the performance of its textured and “hit and miss” brickwork in severe exposure conditions.

Posted in Articles, Bricks & Blocks, Building Industry News, Building Products & Structures, Posts, Research & Materials Testing, Walls

  • Share
Screen Shot 2018-06-20 at 10.41.20

The environmentally friendly Thermoslate from CUPA PIZARRAS

CUPA PIZARRAS is pushing to be more environmentally friendly with Thermoslate, the roof solar system that converts sunlight to energy for central heating.

Posted in Articles, Building Industry News, Building Products & Structures, Roofs, Sustainability & Energy Efficiency

  • Share