Innovations in MF/UF membrane technologies: Development and scale-up of electrically conductive membrane coatings and recycled membranes for wastewater reuse

提出的研究旨在发展膜技术的创新，并加速这些创新到工业应用的中试规模。本项目分为三个部分：1.设计方案；导电膜，防止表面污垢2 .回收污染的膜用于非饮用水的重复使用；材料放大和中试规模测试。在第一部分中，重点介绍了导电防污膜的工作条件。我们将评估导电MF和UF膜的抗胶体和抗生物污染能力，这些膜是由de Lannoy实验室几种成熟的技术合成的。我们将进一步研究操作条件（施加电压强度、极性、频率）如何影响导电膜的抗污染能力，并建立模型来预测最佳操作条件。在第二部分，重点是膜材料的改性。受污染的膜将通过蚀刻旧/用过的微滤（MF）、超滤（UF）和反渗透（RO）膜表面进行回收和再利用。这些被污染、蚀刻和回收的膜将用于分离城市废水。渗透液将用紫外线消毒处理，并评估产品水在非饮用水重复使用中的可行性。在第三部分的研究中，我们将重点研究导电膜和再生膜的规模。我们将建立方法，扩大导电膜在宝尔的膜生产线上的应用。大规模生产包括共挤压涂层技术，在MF和UF膜上涂上导电表面层。我们还将回收污染的膜组件，并将其用于目前由Trojan运营的Greenway污水处理厂的中试规模系统。我们将把回收膜组件的废水与在线紫外线消毒结合起来，并评估其对非饮用水再利用应用的适用性。

The proposed research aims to develop innovations in membrane technologies and accelerate those innovations to the pilot-scale for industrial applicability. The project is divided into three components: 1. Electrically conductive membranes to prevent surface fouling 2. Recycling fouled membranes for non-potable reuse applications and 3. Material scale-up and pilot-scale testing of both. In part 1, the focus is on operating conditions of electrically conductive anti-fouling membranes. We will evaluate the anti-colloidal and anti-biofouling capabilities of electrically conductive MF and UF membranes, synthesized from several established techniques in the de Lannoy lab. We will further investigate how operating conditions (applied voltage strength, polarity, frequency) impact the anti-fouling abilities of electrically conductive membranes and develop models to predict the optimal operating conditions. In part 2, the focus is on membrane material modifications. Fouled membranes will be recycled and reused by etching old/used microfiltration (MF), ultrafiltration (UF), and reverse osmosis (RO) membrane surfaces. These fouled, etched and recycled membranes will be used to separate municipal wastewaters. The permeate will be treated with UV disinfection and the product water will be evaluated for viability in non-potable reuse applications. In part 3 of the proposed research we will focus on investigating scaling-up of electrically conductive and recycled membranes. We will establish methods to scale up electrically conductive membranes for applications in Pall's membrane production line. Scale-up production includes co-extrusion coating techniques to coat MF and UF membranes with electrically conductive surface layers. We will also recycle fouled membrane modules and use them in the pilot scale systems currently at the Greenway wastewater treatment plant operated by Trojan. We will couple the effluent from the recycled membrane modules to inline UV disinfection and assess the water quality for its applicability to non-potable reuse applications.