Waste-Technical briefs    

Solid Waste in the Minerals Extraction Industry

A WRC funded research project was undertaken aimed at enhancing the capability of making reliable, quantitative predictions of water-related impacts associated with solid mineral wastes and demonstrating the effective integration of the resulting methodology into decision-making processes  Read more…

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Well Digging in Kassala – The Hand

In order to reform the wells the farmers came up with the innovative idea of using a percussion drill ('Sibiyah' in Arabic) by hand instead of by its more standard use as part of a high-tech well digging bulldozer, which proved far too expensive for most farmers in the area. The percussion drill also started to be used increasingly for digging new wells Read more….

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Recycling Organic Waste

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Organic waste is produced wherever there is human habitation. The main forms of organic waste are household food waste, agricultural waste, human and animal waste. In industrialised countries the amount of organic waste produced is increasing dramatically each year. Although many gardening enthusiasts ‘compost’ some of their kitchen and garden waste, much of the household waste goes into landfill sites and is often the most hazardous waste.. Read more….

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Compost bin Manufacturing

Different types of home composting units/bins are available in the market, which are manufactured from plastic, metal or concrete rings. Concrete bins have been identified as the most cost-effective and environmentally friendly solution, when compared to other designs. Production of concrete bins has been limited to a few fabricators in the capital city Colombo but there is a huge gap in the dissemination of this knowledge to the other small-scale fabricators in other parts of Sri Lanka. Therefore, this technical brief is intended to disseminate the technology of concrete composting bin fabrication. Read more….

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Low cost Medical Incinerator

The medical waste incinerator is a simple two-chamber natural-draught incinerator designed to be operated at temperatures of 800oC and higher. The performance of the incinerator will vary depending on the moisture content of the medical waste but a throughput of up to 15kg/hour can be achieved. The incinerator has been designed so that it can be built on site, using standard building bricks or blocks and lined with refractory bricks. All the steel components, such as the loading door, the ash removal door and air inlet apertures can be made using basic workshop equipment. . Read more….

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