Innovative Zero Discharge Technology for Mine Water: Breakthrough Exploration of Deep Reinjection and CO2 Synergistic Sequestration
坑水の革新的ゼロ排水技術：深部圧入とCO2相乗貯留へのブレークスルーの探求 (AI 翻訳)
Zhang Q, Wang X, Hu X, Chai G, Wang X
🤖 gxceed AI 要約
日本語
この研究は、中国西部の炭鉱地域における高塩分坑水のゼロ排水処理を目的とし、NF-ROハイブリッドシステムを提案している。また、膜濃縮水とCO2の深部圧入によりCO2の相乗貯留を実現し、炭素中立効果を達成した。PHREEQCシミュレーションにより、鉱物の飽和指数低下と地中拡散の促進を確認した。
English
This study proposes a hybrid NF-RO system for zero-discharge treatment of high-salinity mine water in arid coal mining areas of western China. It also explores deep reinjection of brine and CO2 for synergistic sequestration, achieving net carbon-neutral effects. PHREEQC simulations confirm reduced mineral saturation indices, mitigating precipitation and promoting geological diffusion.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
本論文は、石炭鉱業における水管理と炭素隔離を結びつける点で、日本のGX文脈にも示唆を与える。特に国内の坑水処理やCCUS技術開発において、塩水圧入によるCO2貯留の可能性を検討する際の参考となる。
In the global GX context
This paper contributes to global CCUS knowledge by demonstrating a hybrid zero-discharge and CO2 sequestration system for mine water. It aligns with the growing interest in industrial water cycle and carbon storage, relevant to ISSB disclosures on water and carbon management.
👥 読者別の含意
🔬研究者:Provides a practical method for co-optimizing water treatment and CO2 storage in saline aquifers.
🏢実務担当者:Useful for mining companies seeking to reduce water discharge and offset emissions.
🏛政策担当者:Highlights the potential for regulating brine injection as a carbon storage pathway.
📄 Abstract（原文）
<title>Abstract</title> <p> Western China’s coal mining areas suffer from arid climates and acute water scarcity, while coal mine water is typically high-salinity, with existing zero-discharge systems hindered by high operational costs. To enhance desalination efficiency and cut brine disposal costs, this study proposes a hybrid nanofiltration-reverse osmosis (NF-RO) system to replace conventional RO for deep desalination of high-salinity mine water. It also explores water-quality prediction models for hybrid desalination and evaluates mineral saturation during synergistic CO <sub>2</sub> sequestration through deep reinjection of membrane concentrate and CO₂ generated from temporary hardness removal. Results show that temporary hardness acidification plus hybrid desalination effectively improves the suitability of mine water for irrigation: at 80% NF and 90% RO recovery rates, sodium adsorption ratio (SAR) drops to 3.92 (below the 5.0 safety threshold) and electrical conductivity to 530.5µS/cm. CO <sub>2</sub> -brine mixing optimizes pH for the target formation, with 1 million tons of brine injection co-sequestering 3,700 tons of CO₂,achieving notable carbon-neutral effects. PHREEQC simulations confirm reduced saturation indices of aragonite, calcite and dolomite, mitigating precipitation and promoting geological diffusion. </p>
🔗 Provenance — このレコードを発見したソース
- Research Square https://doi.org/10.21203/rs.3.rs-9504231/v1first seen 2026-06-16 04:28:57
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