Mitigation of silica nanoparticle scaling in water treatment

该项目旨在制定战略，以减轻煤层气（CSG）水处理设施的二氧化硅结垢。CSG沿着沿着裂缝和割理吸附到煤的表面，并且当通过移除地下水而降低压力时释放，地下水具有提取其的区域特有的化学性质。反渗透膜上的矿物结垢严重影响采出水的脱盐。该项目将考虑二氧化硅和富含二氧化硅的纳米颗粒与阳离子和有机物的协同作用，目的是更好地管理阳离子，以促进纳米颗粒的润滑。项目成果可能包括更有效地利用资产，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。

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.