Mitigating tertiary membrane fouling under cold weather conditions

膜技术正越来越多地用于生产高质量的经处理的废水，以便排放到敏感水体或用于再利用目的。膜污染是最具挑战性的因素之一，其降低膜容量并增加操作费用。特别地，已经发现位于生物处理工艺下游的膜在寒冷天气条件下表现出高水平的结垢。该项目将采用历史数据回顾、现场规模取样和实验室规模测试相结合的方法，以寻求了解导致寒冷天气结垢的机制。将测试污染缓解策略的选择，以确定在寒冷天气条件下减少膜污染的优选策略。

Membrane technologies are increasingly being employed to produce high quality treated wastewaters for discharge to sensitive waterbodies or for reuse purposes. Membrane fouling is one of the most challenging factors that reduces membrane capacity and increases operating expenses. In particular, membranes that are located downstream of biological treatment processes have been found to demonstrate high levels of fouling under cold weather conditions. This project will employ a combination of historical data review, field scale sampling and bench scale testing to seek to understand the mechanisms leading to cold weather fouling. A selection of fouling mitigations strategies will be tested to identify a preferred strategy for reducing membrane fouling under cold weather conditions.