Alum Sludge: From waste to valuable product With AquaCritox® recovery process

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Source: SCFI Group Limited

Alum and iron salts are generally used to promote coagulation in the production of clean drinking water which results in the generation of significant quantities of drinking water sludge. The Alum sludge is typically mechanically dewatered and is currently treated as a waste which cannot be processed through traditional sewage sludge disposal methods and in many cases goes to landfill. This additional cost burden of collection, transport and disposal cost is common to all water treatment plants.

The AquaCritox® unit from SCFI can turn this environmental and cost issue into a sustainable and economically sound solution. Using the patented AquaCritox® process it is possible to recover the coagulant as pure aluminium or iron hydroxide which can be reconstituted to generate new coagulant for reuse.

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