Bentonite’s adsorption and absorption properties are very useful for wastewater purification and as a sealing material in the construction and rehabilitation of landfills to ensure protection of groundwater.

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As an absorbent bentonite neutralises uric acid, ammonia and associated noxious/odiferous compounds.

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Watheroo Bentonite’s have the ability to take up almost 9 times more copper than other Australian bentonites and when modified a surface area of more than 400m2 per gram can be exposed; with these characteristics Watheroo Bentonite has the ability to absorb heavy metals and organic materials ie. PCB’s, Phenols etc.

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Water treatment

Removal of suspended and emulsified oils and fats from wastewaters and treatment of waste waters from mechanical maintenance activities.

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Waste water from many industries and can contain emulsified or dispersed fats, oils, grease, fuels or other hydrocarbons. These oils and fats need to be removed prior to discharge or reuse of wastewaters. The high-grade calcium bentonite clays have an affinity for fats and hydrocarbons, when fats and oils are bound to the clay they can be rapidly separated from water.

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Liquid of Leachate containment using bentointe clay to minimise advective and/or diffusive transport in containment migration.

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Effluent treatment

Several industries can generate significant quantities of waste water heavily loaded with organic materials, dissolved nutrients and other pollutants.

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Bentonite clay based water treatment, using settlement or flocculation assisted separation, can be simple, reliable, cost effective approach to polluted water management.

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Bentonite clay based water treatment technology can give good management of this wastewater by:

• Production of high solids sludge for disposal or reuse.

• Concentrating organic material content to improve biogas or methane generation.

• Reduction in content of dissolved nutrients and biological oxygen demand (BOD) in water.

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