Geochemistry and flow structure of contaminated subsurface waters in fissured bedrock of the Lake Karachai area, southern Urals, Russia

Book · Sat Dec 30 23:00:00 EST 1995

OSTI ID:220986

Solodov, I N; Zotov, A V ^[1]

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1. Russian Academy of Sciences, Moscow (Russian Federation). Inst. of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry

Hydrogeochemical investigations of natural and contaminated subsurface waters were carried out in 1992--1994 at the area of surface storage of liquid radioactive waste (RAW) of the Radiochemical plant of the Amalgamated Industrial (Al) Mayak. The water-bearing horizon in fissured volcanogenic rocks was penetrated by uncased observation wells that allowed the use of hydrogeochemical logging. The hardware for the logging includes the hydrogeochemical probe, eight channels of which constantly measure T, P, electric conductivity (E), pH, Eh, concentrations of dissolved oxygen (O{sub 2}), Na, and NO{sub 3} in the wells. This technique allowed one to simulate the natural hydrogeochemical setting in the RAW storage area, to delineate anomalies of contaminated waters of different origin, to evaluate the role of radiolytic processes in the formation of chemical compositions of technogenic solutions, to study the chemical composition and physico-chemical properties of sodium nitrate brines, associated with RAW storage, and to propose a conceptual model for the flow structure of the contaminated subsurface waters.

• OSTI ID: 220986
• Report Number(s): CONF-950917--; ISBN 0-7918-1219-7
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
AQUIFERS
COMPILED DATA
ENVIRONMENTAL EFFECTS
FLOW MODELS
FUEL REPROCESSING PLANTS
GEOCHEMISTRY
GROUND WATER
HYDROLOGY
INTERMEDIATE-LEVEL RADIOACTIVE WASTES
LIQUID WASTES
LOW-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE STORAGE
RUSSIAN FEDERATION
SETTLING PONDS
STORAGE FACILITIES
WATER CHEMISTRY
WELL LOGGING