Addressing the challenges of combined sewer overflows

Operation Risk Simulation and Interaction Impact of Stormwater and Sewage Systems Based on Storm Water Management Model

“…Hydraulic models offer an effective means to simulate drainage processes in stormwater and sewage systems, enabling precise identification of operational risks within pipe networks [24]. However, prevailing studies often construct separate hydraulic models for stormwater and sewage, overlooking the compounding effects of mixed flow between stormwater and sewage on their respective risks [25]. Moreover, combined sewer systems are typically examined in isolation, neglecting their interaction with stormwater and sewage systems [26].…”

Estimating Wastewater Dilution Using Chemical Markers and Incomplete Flow Measurements: Application to Normalisation of SARS-CoV-2 Measurements

“…Wastewater can be lost by seepage or can spill into the natural environment through combined sewer overflows (CSOs). CSOs are active during times of high flow, when the capacity of the wastewater network has been reached, and prevent wastewater backing-up into properties (Perry et al [10]). Wastewater can also be temporarily diverted to storage tanks.…”

Invited Perspective: Toward Resilience—Community-Based Approaches to Managing Combined Sewer Overflows in a Changing Climate

“…These contaminants include triclosan from shampoos, soaps, and toothpastes 14 ; pharmaceuticals, such as erythromycin, fluoxetine, and diclofenac 15 ; per- and polyfluoroalkyl substances 16 ; diethylhexyl phthalate leaching from polyvinyl chloride piping 17 ; and pesticides and nutrients from agricultural and gardening activities. 18 Wastewaters from urban, rural, and industrial sources differ in their composition and are of concern for acute vs. chronic health effects depending on their source. 19 …”

“…When comparing green and gray infrastructure projects, the former may be preferable because they can have socioeconomic, environmental, and community benefits, such as restoration of biodiversity and ecosystem services; increased real estate values; opportunities for increased tourism and leisure activity; and improved public health. 18 Gray infrastructure projects, on the other hand, while effective, are encumbered by high costs and carbon footprints. 18 Embracing green and community-centered approaches not only safeguards public health but also advances systemic resilience to climate change.…”

“… 18 Gray infrastructure projects, on the other hand, while effective, are encumbered by high costs and carbon footprints. 18 Embracing green and community-centered approaches not only safeguards public health but also advances systemic resilience to climate change. 22 …”