An up-down combined high-salinity mine water treatment system

By combining underground and surface mine water treatment systems, utilizing underground space and thermal energy resources, and integrating multi-stage membrane concentration and MVR evaporation crystallization technology, the problems of large land area, high energy consumption, and high cost in mine water treatment have been solved, achieving low-carbon and efficient mine water treatment and resource utilization.

CN119774810BActive Publication Date: 2026-07-03XIAN RES INST OF CHINA COAL TECH & ENG GRP CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN RES INST OF CHINA COAL TECH & ENG GRP CORP
Filing Date
2025-01-09
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing mine water treatment technologies suffer from problems such as large land area requirements, low treatment efficiency, large reagent dosage, difficulty in intelligent transformation, high energy consumption, and high costs, failing to meet the demands of modern mining for low-carbon, environmentally friendly, and resource-recycling needs.

Method used

A combined underground and surface high-mineralization mine water treatment system is adopted, including an underground water treatment system and an above-ground mine water heat exchange system. It utilizes the underground space, terrain difference and thermal energy resources in the mine water, combined with multi-stage membrane concentration and MVR evaporation crystallization technology to achieve efficient treatment and resource utilization.

Benefits of technology

It improves treatment efficiency, reduces water treatment costs, realizes low-carbon and high-efficiency mine water desalination and resource utilization, reduces the use of chemicals, extends the life of membrane systems, reduces energy consumption and operating costs, and realizes the recycling of water resources.

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Abstract

This invention provides a combined underground and surface high-salinity mine water treatment system, comprising an underground water treatment system and an surface mine water heat exchange system. The underground water treatment system mainly includes a high-level regulating tank, a multi-stage ultrafiltration device, a flocculation sedimentation tank, a diaphragm filter press, and a terminal ultrafiltration device. The surface mine water heat exchange system mainly includes a condenser, a brackish water reverse osmosis device, a seawater desalination reverse osmosis device, a disc tube reverse osmosis device, a heat pump exchange system, and a crystallizer. This invention fully utilizes underground space, terrain elevation differences, and hydrothermal resources, obtaining heat energy through a water source heat pump as a preheating heat source for the evaporation and crystallization of concentrated brine, thereby achieving combined underground and surface treatment of high-salinity mine water and low-carbon, low-cost desalination and resource utilization.
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