British Nuclear Fuels Plc

Trevor Simon Ngawoofah

Harry Eccles

Theresa Elizabeth Kearney

A composite bioreactor and a method of using same is described. The bioreactor ( ) comprises a combination of a sulfur oxidizing bacteria (SOB) bioreactor ( ) directly on top of a sulphate reducing bacteria (SRB) bioreactor ( ); the SOB bioreactor ( ) comprising a heap of said soil to be rernediated and having suitable microorganisms therein to react with degrade contained contaminants; said SRB bioreactor comprising trough means ( ) having support means to support said soil heap associated with an opening thereof, said support means having permeable membrane ( ) associated therewith to allow passage of liquid but substantially no soil and sulfur reducing bacteria within said trough means ( ); and liquid and nutrient supply means to promote growth of said sulfur oxidizing bacteria and said sulphate reducing bacteria within said composite bioreactor.

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Preston, United Kingdom

Trevor Simon Ngawoofah