Non-potable reuse – getting squeezed out in favor of potable reuse?
Dr. Kati Bell | Brown and Caldwell | United States
Non-potable (NP) reuse can diversify water supply portfolios. Many applications (e.g., landscape irrigation) are applicable seasonally and require dual distribution systems. Expanding indoor NP reuse (e.g., toilet flushing, urban agriculture) have risks we must take seriously. This presentation summarizes key opportunities in NP reuse and highlights the need to balance benefits and risks.
Can chlorine disinfection control the biofouling of reverse osmosis membrane used for municipal wastewater reclamation?
Dr. Yinhu Wu | Tsinghua University | China
This study investigated the effect of chlorine disinfection on the biofouling of reverse osmosis membrane used for municipal wastewater reclamation. Although chlorine disinfection inactivates most bacteria in wastewater, some chlorine-resistant bacteria could still survive and the microbial community structure changes significantly after chlorine disinfection, leading to more severe biofouling.
Factors Affecting Chlorine Stability in Recycled Water Distribution System: How Much Do We Know?
Georg Kastl | Western Sydney University | Australia
This study investigates chlorine stability in a full scale recycled water system. Repeated chlorine dosing did not significantly stabilise the chlorine. The chlorine decay rate in water samples increased with retention time but did not correlate well with known compounds/factors. Possible microbial factors and chemical factors and directions are suggested.