TACOMA, WA – Enpurion filed a patent for treating dissolved aluminum in stormwater and industrial wastewater.

Dissolved metals are shown to be toxic to many aquatic species, especially salmon. Many states regulate metals in stormwater and industrial wastewater.  Some states (e.g. Oregon) include Aluminum in their general industrial stormwater permits, with limits below 1 part per million (mg/l).

Enpurion Compact EC

Enpurion Compact EC

While elemental aluminum is relatively insoluble, the anionic form, called aluminate ion, can be especially tricky to remove.  Aluminate ion forms in alkaline environments, and once formed, remains soluble well into the neutral range.  Many facilities have aluminum problems and they not been able to solve, until now.  The Enpurion process is safe, effective and can treat aluminum below 0.1 mg/l

The process involves formation of insoluble aluminate compounds and then precipitating the resulting solids in an electrochemical process.  The process is inexpensive to operate and can provide options to companies that have not been able to achieve benchmarks.  This process can replace traditional technologies such as chitosan, filtration, above-ground sorption beds (dumpsters) or traditional electrocoagulation.

Enpurion engineering personnel are available to describe the process to end users and provide consultation on the technology at no charge.  For more information, contact by email at info@enpurion.com.