Recovery of iron oxides from polluted coal mine drainage

Details Recovery of iron oxides from polluted coal mine drainage Recovery of iron oxides from polluted coal mine drainage

1997-04-15

1999-09-21

Woo, Jay H.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210722, 210724, 210747, 210170, 210201, 210205, 210253, 210322, 423140, 423633, C02F 164

Patent

active

059549696

ABSTRACT:
A method and system is provided for producing a commercially usable iron oxide material by treating iron contaminated water. A clean effluent is also produced. Iron contaminated water is sampled to determine a bicarbonate to iron molar ratio. The flow of the water is directed to a collection basin assembly when the bicarbonate to iron molar ratio is at least 2 to 1. Iron oxide material precipitates in the collection basin assembly. The water from the collection basin assembly is directed to a constructed wetland. After a period of time, the iron oxide material in the collection basin assembly can be harvested and used for commercial purposes without excessive further treatment.

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The Recovery of Marketable By-Products from Acid Mine Water; B.B. Kaplan; 1930; pp. 90-92.
Passive Treatment of Coal Mine Drainage; Information Circular 9389; Robert S. Hedin, Robert W. Nairn, and Robert L. P. Kleinmann; 1994.

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