Case
Groundwater management
Industrial water treatment
Urban water management
+4
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The Sandbach Wastewater Treatment Works in Cheshire, England, needed to increase treatment capacity to support regional population growth.
The key challenge was to deliver higher performance within a limited site footprint and budget. Using traditional crossflow filter media would require larger structures, longer construction time, and significantly higher costs, making the project difficult to deliver within existing constraints.
Working closely with Cougar Wastewater, EXPO-NET delivered an alternative biological filtration solution using BIO-BLOK® fixed filter media.
BIO-BLOK® enabled the design of a compact nitrifying filter system capable of handling increased loads within the existing site boundaries. The modular BIO-BLOK® units are lightweight, self-supporting, and easy to install by hand, which significantly reduced both installation time and complexity.
This approach made it possible to deliver a higher-performing solution without increasing the plant footprint.
The project delivered strong, well-documented environmental and economic benefits:
Key results include:
