There is an increasing need to identify sustainable, cost-effective solutions to maintaining high standards of drinking water quality to customers in the face of regulatory change. Similarly, there is the need to ensure consumers have full confidence in their tap water. This project seeks to identify, assess and evaluate potential future options within stored water reservoirs, including investigations into radically innovative ideas. The aim is to, not only improve raw water quality within reservoirs, but to help achieve compliance and customer acceptability of drinking water at lower overall cost than through traditional WTW process-led solutions. Options identified through the project could also contribute to reducing the risks of outage or reduced WTW production due to adverse raw water quality, helping to improve overall water supply resilience.
This project will identify and review low cost in-reservoir treatment technologies, with the aim to achieve a sustainable reduction in downstream treatment costs, including water treatment energy, chemical and/or sludge disposal costs. In-reservoir problems to be targeted include:
In-reservoir algal blooms
Algal by-products: Geosmin and 2-MIB
Dissolved organic compounds such as polar pesticides
Manganese and other heavy metals
Zebra mussel larvae
Pre-cursors for unregulated DBPs.
For each technology the project will:
Assess its scientific, engineering and economic viability
Identify timescales and routes to implementation at full scale.
This work will inform water companies 25 year strategic plans, as well as potentially offer solutions for problems which could be considered in PR19.