Mobile Reed Bed Pilot Aims to Bring Flexible Wastewater Treatment to Rural Sites
A mobile plant-based approach to wastewater treatment which can be targeted at specific sites as required is being trialled by Scottish Water for the first time.
Transportable reed beds were put in place at Moscow Wastewater Treatment Works in East Ayrshire at the end of 2025 as part of the pilot, which aims to provide an additional level of nature-based filtration and treatment at smaller, remote treatment works as and when required.
Now, data gathered over the course of the last eight months shows that the reed beds – which have been grown in 20-yard roll-on roll-off skips that can be easily transported – are helping produce a cleaner final effluent and meeting the targets set at the start of the trial, with the potential to be rolled out more widely.
Reed beds are an established, environmentally-friendly way of filtering out contaminants such as phosphorus, nitrates, and organic biodegradable substances from wastewater effluent that are already employed at a number of Scottish Water sites in traditionally planted reed beds.
Operations team leader for the treatment works, Connor McCafferty, said: ¡°This portable reed bed is the first of its kind in Scotland. The flow comes into the reed bed after it has been through primary and secondary treatment processes already and filters through the stones where the reeds will essentially eat up any organic and biological matter that is left in the effluent at this point.
¡°This allows us to add an extra layer of filtration and treatment to the wastewater effluent that we deal with from the surrounding area, with the added benefit that the reed beds can easily be moved from site to site and scaled up or down as needed.¡±