The process provides up to 99% treatment of the water and thus meets the EU drinking water directive.

The waste product is fine-grained granules with strong and stable metal bonds and the final deposits represent only about 10% of normal sludge volumes.

• It has long been recognised that adsorption processes are capable of reducing the amount of many metals to a very low level in water/wastewater.
• Veolia Water Solutions & Technologies has patented MetClean™ technology that utilises the adsorption process in a fluidised bed reactor to remove a range of metals from solutions.
• Veolia Water Solutions & Technologies' experience includes As and the following metals: Cd, Cr, Hg, Mo, Ni, Se, Zn, Cu, V, Ba and Sr.

METCLEAN is capable of removing most metals fiom solutions.

Typical applications axe:

Potable water contaminated by arsenic or nickel as a result of pyrite oxidation. This problem can be solved by installing a METCLEAN treatment unit at the existing water supply facility.

Groundwater contamination due to leaching of metals is easily eliminated by using a dedicated fluidised bed reactor accommodated in a standard container. A typical application is chromium removal from metal coating facilities or fly ash landfills.

Industrial wastewater from metal treatment industries, wood preservation, tanning... containing the metals already mentioned.

Flue gas desulphurisation wastewater from power plants is the field in which Kruger has gained most experience so far. METCLEAN™ is highly suited for this heavily contaminated wastewater and offers a substantial reduction in treatment and waste disposal costs. In fact, METCLEAN™ is capable of treating a range of metals to lower ppb levels than can be achieved in a traditional precipitation plant. In this application, the elimination of the sludge problem is a very obvious advantage.