S² has been collecting waste brines from the Israeli Aluminum processing industry since 2001, in order to produce valuable chemicals used for waste water treatment and other applications.

Brines removed from Aluminum plants are transported to a central processing unit. They are used for Sodium Aluminate production. Products' quality meets the standards of use for potable water. The recycled products are currently used for industrial and municipal wastewater treatment.

This operation highly valued by the Israeli Ministry of Environmental Protection is performed as a purely commercial activity. No commercial advantages have been requested for the use of recycled material

There are three types of Aluminum processing factories:

Aluminum extrusion plants waste
S² removes basic waste solution from extrusion processes to produce Sodium Aluminate. Recycled Sodium Aluminate is the cheapest coagulant sold in Israel. As a result it allows reducing the cost of wastewater treatment. In 2008, S² has recycled 90% of the available brine in Israel.

Aluminum milling waste solutions
Waste caustic soda solutions from the aircraft industry contain impurities that impose their burial or combustion at a hazardous waste disposal facility (e.g. Ramat Hovav in Israel). S² has developed a process which enables recycling most of these wastes into Sodium Aluminate, thereby reducing the quantity of waste removed to the waste disposal facility.

Anodizer wastewater treatment
S² has developed a novel technology for the treatment of aluminum anodization wastewaters. The technology proposed by S² enables:

• The removal of concentrated acidic and basic solutions from Anodization plants.
• The reduction of water consumption up to 75%.
• The reduction of treated wastewater flow to sewage system.
• The reduction of the amounts of salts (Na+, SO4--) discarded to the sewage system.
• The reduction of solid wastes produced by the neutralizing process.
• The reduction of the wastewater treatment in the plant to a minimum.

The concentrated brines removed from the anodization plants will be recycled by S². The recycled Sodium Aluminate and Aluminum Sulfate will be used for waterwater treatment.