There are two categories of spray-on ADCs: foams and slurries. Soap, starches or resins are mixed with water to create foam. Slurry ADCs are made by mixing solids with water and spraying the mixture on the working face of the landfill. Solids commonly used to make slurries are wood fiber, newspaper, cement kiln dust and fly ash

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Alternative Daily Waste Cover (ADC) is a spray-applied durable, non-flammable and erosion resistant coating.

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As well as removing the need for traditional daily covers, it also;

• Mitigates odours

• Conserves air space

• Reduces airborne debris

• Controls vector populations

• Prevents fires starting

• Discourages scavenging

• Cuts operating costs

• Can be used for erosion control

• Extends landfill life

• Non-toxic

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ADC takes up 24 times less space than traditional methods. The life of any landfill depends on the remaining permitted available air space. Each cubic metre of traditional cover used for daily cover results in a permanent loss of revenue on space that cannot be sold.

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Landfill operators can make savings in air space, labour, machinery and fuel costs by using ADC instead of traditional soil covers.

Applying ADC is a one-person operation done using specialised equipment or a standard hydroseeding unit.

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One load requires just one hour for mixing, application and rinse-out, but if not used can be saved for later use.

After application, the ADC slurry hardens to form a cement type crust that provides a durable, erosion resistant coating.

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