Mitigation of silica nanoparticle scaling in water treatment

水处理中二氧化硅纳米颗粒结垢的缓解

• 批准号: LP160101294
• 负责人: A/Prof Steven Pratt
• 金额: $ 30.01万
• 依托单位: The University of Queensland
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2017
• 资助国家: 澳大利亚
• 起止时间: 2017-09-11 至 2023-09-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP160101294
• 关键词: Mitigation; silica; nanoparticle; scaling; water

This project aims to develop strategies to mitigate silica scaling at coal seam gas (CSG) water treatment facilities. CSG is adsorbed to the surface of coal along fractures and cleats and released when pressure is reduced by removal of groundwater, which has chemistry specific to the region from which it is extracted. Desalination of produced water is severely impacted by mineral scaling on reverse osmosis membranes. This project will consider silica and silica-rich nanoparticles in concert with cations and organics, with the aim of better managing cations so to facilitate nanoparticle lubrication. Project outcomes may include more productive use of assets, improved pre-treatment infrastructure to support reverse osmosis operation, and the environmental benefits of reduced chemical waste and increased water recovery.

该项目旨在制定减少煤层气 (CSG) 水处理设施中二氧化硅结垢的策略。 CSG 沿着裂缝和割理吸附在煤炭表面，并在通过去除地下水而降低压力时释放，地下水具有其提取地区特有的化学性质。采出水的淡化受到反渗透膜上矿物质结垢的严重影响。该项目将考虑将二氧化硅和富含二氧化硅的纳米颗粒与阳离子和有机物结合起来，目的是更好地管理阳离子，以促进纳米颗粒润滑。项目成果可能包括更高效地利用资产、改进预处理基础设施以支持反渗透操作，以及减少化学废物和增加水回收的环境效益。