Where there's muck in Scotland, there's biomass
15 Jan 2000
The demands of the Urban Wastewater Directive have led to West of Scotland Water ordering over £1million-worth of tertiary nitrification filters from Huntingdon-based Munters. The filters have been installed at Daldowie sewage treatment works near Glasgow.
The Directive required Daldowie to reduce the concentration of ammonia in its discharged water to 5mg/l in summer and 8.5mg/l in the winter. To achieve this, West of Scotland Water opted for Munters' BIOdek tertiary nitrifcation filters. These use fixed films of biomass to oxidise the ammonia into harmless by-products. The filters are downstream from the final clarifiers, so the water entering them has low BOD and total suspended solids.
`BIOdek is very efficient for this type of application due to its long retention times, crossflow structure and high surface area,' says Munters environmental components division director Terry Marshall.
