A method for deep geologic sequestration of coal mine water concentrate

By employing a non-powered stirring unit and deep well injection technology during the deep well injection process, the problem of inconvenient equipment handling and storage in deep excavation processes has been solved, enabling efficient deep-ground sealing of coal mine water concentrate and improving the convenience and reliability of the equipment.

CN117228209BActive Publication Date: 2026-06-09INNER MONGOLIA ERDOS YONGMEI MINING INVESTMENT CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INNER MONGOLIA ERDOS YONGMEI MINING INVESTMENT CO LTD
Filing Date
2023-10-17
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing deep well injection equipment, when used for deep excavation, suffers from excessively long mixing and self-cleaning mechanisms, making the equipment inconvenient to transport and store, thus affecting its ease of use and efficiency.

Method used

Using a non-powered stirring unit and deep well injection technology, the concentrated solution of mine water after RO reverse osmosis treatment is sealed in the formation at a depth of -1800 meters to -2200 meters. The sealing is achieved by utilizing the pores and micro-fractures of sandstone, and the use of a non-powered stirring unit avoids the need for an excessively long stirring structure.

Benefits of technology

This technology avoids the use of excessively long mixing structures during deep well sealing, facilitates equipment handling and storage, improves equipment convenience and reliability, and reduces the difficulty of equipment maintenance and cleaning.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to a kind of coal mine water concentrated liquid deep earth storage method of coal mine wastewater treatment field, comprising the following working steps: S1, coal mine water is treated by RO reverse osmosis, and waste water concentrated liquid is obtained;S2, utilize the well unit in the deep digging column inside and dig deep well at selected storage point, the bottom of deep well is below-2200 meters;S3, utilize the winding mechanism outside and pull deep well unit to ground, and along the restraint groove of deep digging column inner wall No. power stirring unit is sent into deep digging column inside close to the position of bottom end;S4, then utilize the waste water concentrated liquid and place in deep well inside by elastic tube, so that concentrated liquid is stored in the stratum between-1800 meters to-2200 meters, utilize the sandstone pore and microfracture in-1800 meters to-2200 meters stratum;S5, utilize the concentrated liquid in deep digging column and stir mixing treatment by No. power stirring unit, avoid the solid particles in concentrated liquid and occur sedimentation stratification, using deep well perfusion technology, and the concentrated liquid of coal mine water is stored in deep earth.
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