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NEUTRALIZATION OF ACIDIC GROUND WATER NEAR GLOBE, ARIZONA.

By:
,
Edited by:
Schmidt Kenneth D.

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Abstract

Highly acidic contaminated water is moving through a shallow aquifer and interacting with streams near Globe, Arizona. Dissolved concentrations reach 3,000 mg/L iron, 150 mg/L copper, and 16,400 mg/L total dissloved solids; pH is as low as 3. 6. Samples from 16 PVC-cased observation wells include uncontaminated, contaminated, transition, and neutralized waters. Chemical reaction with sediments and mixing with uncontaminated water neutralizes the acidic water. The reactions form a transition zone where gypsum replaces calcite and most metals precipitate. Ferric hydroxide also precipitates if sufficient oxygen is available. Abundant gypsum crystals and ferric hydroxide coatings have been recovered from well cuttings. Large sulfate concentrations produce sulfate complexes with many metals that inhibit removal of metals from solution.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
NEUTRALIZATION OF ACIDIC GROUND WATER NEAR GLOBE, ARIZONA.
Year Published:
1985
Language:
English
Publisher:
American Water Resources Assoc
Publisher location:
Bethesda, MD, USA
First page:
141
Last page:
148
Number of Pages:
8
Conference Title:
Proceedings of a Symposium - Groundwater Contamination and Reclamation.
Conference Location:
Tucson, AZ, USA