Construction works for sewage treatment plants, purification plants and refuse incineration plants

Tender description

Notification of Award of Lot 1 of the following (Lots 2 and 3 have been discontinued): The bulk of the sewage sludge generated in the Thames Water catchment area is digested, with this proportion due to increase further with the construction of new assets. Conventional anaerobic digestion typically recovers 30 % of energy value contained within sludge with the bulk of the energy potential being lost as sludge is applied to agricultural land. Thames Water is looking for new methods to recover larger amounts of renewable energy from sewage sludge to meet regulatory, economic and environmental targets. Recent developments and success in advanced thermal recovery technology has prompted this OJEU. Thames Water is seeking as a minimum a third party technology provider to work with us to develop a full scale (10-40 dry tonnes/day) demonstration plant to recover renewable energy in the form of electricity, biogas and/or heat. The source being dewatered sewage sludge cake or dried sludge with a dry solids content of 17-30 % and 80-95 % respectively and an energy content of 12-16 MJ/kg dry solids. The technology could either be plasma gasification, gasification, pyrolysis, supercritical water oxidation or others. These technologies could either be market ready or under development. We are seeking market ready technologies to meet immediate requirements. However, we may also be interested in developing technologies with potential to meet our requirements. Allotment: 1. Lot 1: Technology that is already proven in the water utilities sector; 2. Lot 2: Technology that is proven in industries other than water; 3. Lot 3: Technology that is at the developmental stage and unproven. Suppliers can apply for more than 1 lot if they can offer more than 1 technological process. Please note that awards may not be made for any or all lots. Agreements will be awarded for a minimum of at least 3 years up to a maximum of 7 years.