ENHANCING WATER FILTRATION EFFICIENCY

As part of a multi-million investment to ensure a sustainable and resilient water supply for over 300,000 residents in Essex, the Layer Water Treatment Works has undergone a significant upgrade to enhance filtration performance and improve raw water quality by upgrading the sand washing system.

Duo Group, in collaboration with Terex Washing Systems, supplied and installed an advanced FM120C & Pre-Wash sand washing system on behalf of Northumbrian Water Ltd, ensuring the highest efficiency in filter media processing.

At the outset, there were some challenges to overcome. The existing sand washing system was outdated, affecting filtration efficiency. Climate change-related factors were also impacting raw water quality, increasing the need for a pre-treatment solution.

In addition, the current system required the sand to be processed two or three times to be clean and in spec and there was the need for a chemical-free solution to improve sustainability and reduce maintenance costs.

The Solution

To resolve these issues, the sand washing system had to be upgraded which led to the installation of a new Terex Washing Systems FM120C & PreWash plant to improve sand cleanliness and optimise filtration.

This new plant includes an H12 Feeder which handles feed material efficiently; a 12x5 Double Deck Static Rinsing Screen that removes unwanted oversize and debris; a Prewash System & Cyclones to ensure efficient sand washing and optimal sand recovery; a Dewatering Screen & Radial Product Conveyor that provides immediately useable sand; and a Freshwater Tank and Pumps to maintain consistent water supply for operations.

The equipment was pre-assembled at the TWS factory in Northern Ireland, ensuring a smooth on-site installation, with mobile cranes and telehandlers being used for the precise placement of large components.

The Results

The benefits of the upgrade have been many and include:

■ Improved Filtration Performance – Cleaner, more efficient sand washing enhances water treatment.

■ Sustainable & Chemical-Free Processing – Reducing environmental impact while maintaining high-quality water standards.

■ Increased Operational Efficiency – Modern equipment reduces cycle time, material handling cost, maintenance downtime and improves output.

■ Reliable Water Supply for 300,000+ Residents – Ensuring long-term water security in Essex.

■ Cost Savings & Resource Efficiency – Recycled sand minimises the need for purchasing new material.

Conclusion

The Layer Water Treatment Works upgrade sets a new benchmark in sustainable water filtration. By integrating advanced Terex Washing Systems technology and innovative engineering solutions from Duo Group, the project enhances water quality, supports climate resilience, and improves long-term operational efficiency.