Deep Well Waste Injection - Reaction with Aquifer Water

by Don L. Warner,

Serial Information: Journal of the Sanitary Engineering Division, 1966, Vol. 92, Issue 4, Pg. 45-72

Document Type: Journal Paper


Deep-well injection is a promising method for permanently storing some liquid wastes. The influence of reactions between injected and interstitial waters on aquifer permeability is a problem of significant interest. A theoretical and laboratory study has shown that, under specified conditions, the amount of reaction between injected and interstitial solutions can be anticipated if the dispersive character of the porous medium is known. Laboratory evidence also showed that permeability loss resulting from the formation of some precipitates may not be as great as has been suggested. Others have proposed that, where reaction between injected waste and interstitial water is undesirable, a zone of nonreactive water can be injected between the waste and the aquifer water. This buffer-zone concept was substantiated in the laboratory and equations are proposed for the design of such zones in field situations.

Subject Headings: Injection wells | Waste management | Aquifers | Laboratory tests | Waste storage | Porous media

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