Fresh Water Generation from Aquifer-Pressured Carbon Storage
Fresh Water Generation from Aquifer-Pressured Carbon Storage
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DOI：
10.2172/962809
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发表时间：
2009-07
期刊：
影响因子：
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通讯作者：
R. Aines;T. Wolery;W. Bourcier;T. Wolfe;C. Haussmann
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文献类型：
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作者：
R. Aines;T. Wolery;W. Bourcier;T. Wolfe;C. Haussmann
我们能利用与封存相关的压力将盐水变成淡水吗？该项目正在建立将盐岩地层中的碳捕获和储存(CCS)操作加压的盐水用作海水淡化和水处理技术(包括反渗透(RO)和纳滤(NF))的原料的潜力。可能的产品包括：饮用水、冷却水和用于储存二氧化碳的额外含水层空间。结论是：(1)许多含盐地层水似乎可以接受大部分常规的反渗透处理；(2)热力学模拟表明渗透压比矿物结垢对水采收率的限制更大；(3)结合Pitzer方程(或扩展的UNIQUAC)的热力学模拟可以准确地估计渗透压极限；(4)提出了基于TDS的处理可行性的一般分类，其中10,000-85,000 mg/L的卤水是最有吸引力的目标；(5)这个TDS系列的卤水(在地理上和深度上)似乎丰富，可作为规划未来CCS作业的目标(包括选址和选择注入层)；以及(6)由于预期将有更多的回收压力，处理10,000-85,000毫克/L TDS系列的海水的估计成本约为传统海水淡化成本的一半。“更少”
Can we use the pressure associated with sequestration to make brine into fresh water? This project is establishing the potential for using brine pressurized by Carbon Capture and Storage (CCS) operations in saline formations as the feedstock for desalination and water treatment technologies including reverse osmosis (RO) and nanofiltration (NF). Possible products are: Drinking water, Cooling water, and Extra aquifer space for CO{sub 2} storage. The conclusions are: (1) Many saline formation waters appear to be amenable to largely conventional RO treatment; (2) Thermodynamic modeling indicates that osmotic pressure is more limiting on water recovery than mineral scaling; (3) The use of thermodynamic modeling with Pitzer's equations (or Extended UNIQUAC) allows accurate estimation of osmotic pressure limits; (4) A general categorization of treatment feasibility is based on TDS has been proposed, in which brines with 10,000-85,000 mg/L are the most attractive targets; (5) Brines in this TDS range appear to be abundant (geographically and with depth) and could be targeted in planning future CCS operations (including site selection and choice of injection formation); and (6) The estimated cost of treating waters in the 10,000-85,000 mg/L TDS range is about half that for conventional seawater desalination, due to the anticipated pressure more » recovery. « less