A kind of sewage collection system for in-situ leaching uranium mining well site

Abstract

The invention provides an in-situ leaching uranium mining well field sewage collection system. The system comprises a sewage discharge main pipe, a plurality of sewage discharge branch pipes, liquid-pumped drilled hole opening buried pipes, liquid-injected drilled hole opening buried pipes, a sewage tank, a sewage discharge pump room and a liquid collecting pipeline, wherein an inlet port of the sewage discharge main pipe is arranged at each well field highest point, and an end port of the sewage discharge main pipe and the sewage tank are arranged at one or more well field lowest points; the sewage discharge branch pipes are respectively laid between liquid-pumped and liquid-injected drilled holes and the sewage discharge main pipe, are connected with the liquid-pumped drilled hole opening buried pipes and the liquid-injected drilled hole opening buried pipes and are topographically connected to the sewage discharge main pipe; walls of the sewage tank are of brick-and-concrete-structured members, and a precipitation and overflow wall is arranged at the bottom of the sewage tank, so as to divide the interior of the sewage tank into a precipitation tank and a pump suction tank; a pump suction port and a pump suction pipe are arranged above the pump suction tank. According to the system, the pollution to the ground surface and underground of an in-situ leaching well field caused by sewage is fundamentally avoided, and moreover, uranium in the sewage is recovered, so that the system has significant economic benefits.

Description

Technical field [0001] The invention belongs to the technical field of in-situ leaching of uranium, and in particular relates to a sewage collection system for an in-situ leaching of uranium. Background technique [0002] There are four main types of sewage from in-situ leaching uranium mine pits: Type I sewage is cleaning water from the mud and filters in the hole after the drilling construction is completed; Type II sewage is after the drilling has been pumped and injected for a period of time. , Clean the sewage with radioactive substances that is blocked by the borehole filter, and the third type of sewage is the sewage generated by cleaning the equipment in the wellhead; the fourth type of sewage is atmospheric precipitation, snow water, etc. Except for Type I sewage that has been collected into the waste mud pool during drilling and centralized treatment, the other three types of sewage are all accumulated in the wellhead or scattered around the wellhead and removed by atmo...

AI Technical Summary

Problems solved by technology

Some advanced in-situ leaching uranium mines in the world use well-washing tank trucks to wash holes and collect well-washing water, but the sewage of type III and type IV has not been collected and treated, and this type of sewage is a mixed water body. Although the amount is not large, it contains trace amounts of radioactive substances—elements such as uranium and radium. If they are not collected and processed, they will also pollute the surface vegetation and underground soil.

Images