| The first U.K. installation of the floating Biofilter was completed at a farm lagoon owned and operated by Anglian Water at Balsham, Cambridgeshire in April of this year. The lagoon is used for the storage of untreated sewage sludge prior to agricultural disposal. |
| This application demonstrates the flexibility of the Biofilter system in its ability to compensate for the sloping sides of the lagoon and fluctuating sludge levels. In this case the design incorporates a gas tight butyl skirt between the lagoon sides and the Biofilter, thereby enabling the filter body to move vertically with the changing sludge level and prevent egress of gas and odour. |  |
 |
The installed design, encompasses the Biofilter; a series of bags linked together to form a simple mattress, an intermediate butyl membrane linked by additional Biofilter bags ( to provide more filter medium in contact with sludge at high sludge levels ) to the butyl skirt which is anchored and sealed around the perimeter of the lagoon. |
xPerformance testing by Anglian Water personnel xand the Technical University of Brunswick has xdemonstrated compliance with previously agreed xperformance criteria – "an overall reduction in xgaseous emissions (including H2S, Organic xemissions and Olfactory) of at least 80%." |
 |
| Biofilter systems can be used to reduce gaseous emissions and odour in a variety of applications, from steel tanks to holes in the ground. Purchase, installation and maintenance costs are significantly less than alternative solutions. |