The Thames Tideway tunnel is a super sewer being built to minimise the amount of pollution that directly enters the river each year.

Keltbray secured a contracted with FLO JV over two years ago to treat contaminated material arising from seven shaft sites used for the new Thames Tideway Tunnel.

By using its own wharf facility to accept hazardous and non-hazardous material from the shaft sites in 2018, Keltbray was able to develop sustainable technological practices and ensure the treatment was eco-friendly.

The material was excavated, analysed and then treated depending on the contaminant, which required a high level of performance in terms of treatment capabilities, health and safety performance and operational procedures. In under a year, Keltbray received, treated and recycled 45,000 tonnes of waste soil from the project.

Indeed, Keltbray’s core values are committed to the consideration of the social, economic, and environmental. Keltbray Environmental’s goal in recovering and recycling waste in treatment facilities, and reducing air emissions showcases the company’s commitment to sustainability.

The Tunnel is a successful project, marked by Keltbray’s ability to use barge transport and to locate its treatment facility close to the site. This massively reduced the haulage cost of its clients, as well as decreased barge emissions. Since the project took place in central London, Keltbray ensured safer and less congested roads and greater movement capabilities.

By using barges to move the material, 64% less CO2 and 15% less NOX was emitted than by using a tipper truck. Even the treatment processes incorporated advanced techniques that allowed them to sustainably haul material from site and divert it from landfill.

The treatment facility in Mohawk Wharf treats hazardous material, and allowed Keltbray to achieve a recycling figure of 99.5% in 2018, practically zero waste. The Mohawk Wharf site has since been expanded to allow for a greater treatment area and maximise its environmentally friendly technologies.

It is this level of thought and care that marks Keltbray out as a leading innovator in the industry.

Its current technology development to grow hydrocarbon degrading microbes producing biochemical for soil treatment draws Keltbray as being scientifically innovative. Indeed, Mohawk Wharf is the only facility in central London that can carry out this treatment.

Keltbray works with the environment, and not against it. It is for this reason that Keltbray is developing new sites to increase its ability to treat CDE material, and will act as a hub for waste in other areas of London. It has added additional EWC codes at its Thames Wharf site to keep up with demand from London’s biggest construction projects. This increased capacity illustrates the level of growth and demand Keltbray has for its unique services.

A client recently said of our capabilities,  “Keltbray’s Environmental division is the best in class as far as I am concerned” which validates the quality of work Keltbray pioneers in handling hazardous waste treatment.

Keltbray Group integrates clean technology into its practices. It is no longer a hassle: it is a core component.