Name

Advanced liquid nanotechnology for effective spill reduction at Scottish Water’s WWTW

Speakers

Aidan Holland, Ross Graham

Authors

Elizabeth Bismonte and Aiden Holland, Acorn Water, Ireland
Ross Graham, Scottish Water, UK

Description

Wet weather flows in the UK frequently exceed the capacity of combined sewer systems, leading to the discharge of untreated or partially treated wastewater into natural water bodies. This issue, driven by increase in population, introduces pollutants such as nitrogen, phosphorus, organic matter, and pathogens into aquatic ecosystems, causing biodiversity loss and posing public health risks. Infrastructure upgrades, while effective, are capital-intensive and time-consuming.

Acorn Water, in collaboration with Scottish Water, trialed Nanofloc at Dalderse WWTP to address hydraulic load challenges during wet weather. With a design capacity of 68,170 m³/day, Dalderse experienced peak flows of 94,950 m3/day in 2023, and 136,101 m3/day in 2024 – an increase of 43% influent flow. Nanofloc enhanced the plant’s treatment efficiency by forming dense flocs with activated sludge, enabling an additional 6,090 m³/day of treated water, equivalent to 2.2M m³/year, while reducing spillage events by 41%.

Nanofloc offers a cost-effective solution to enhance treatment capacity, minimise environmental impact, and stabilize plant operations under peak loads. Its implementation reduces reliance on infrastructure expansion, offering sustainable approach to managing wet weather flows.

Time

10:05 AM - 10:17 AM

Location Name

Room 2

Track

10:05 - 11:20 Technology Showcase