Behaviour of the Dissolved Iron in a Spring Water with Reducing Property along the Stream

Abstract

When a spring water having reducing property with an about 10 ppm (Fe) of dissolved iron flowed down stream, the iron deposition behaviour along the stream was investigated. The dissolved iron concentration decreased along the stream, finally reaching its lowest limit level (1-2ppm). The resultant hydrous iron (III) oxide was X-ray amorphous. Judging from the variation of the redox potential along the stream, the water kept its reducing property during the early stage of the iron deposition and then gradually changed, finally reaching an oxidizing stage.