Sustainable solution for effluent treatment no longer meeting effluent standards
Existing wastewater treatment equipment was no longer meeting effluent standards, but the filter system itself was performing well. Consequently a solution was needed to increase the treatment levels without replacing of the existing random media Trickling Filter system.
This was the problem faced in a wastewater treatment plant at a key factory of a major food manufacturer. The water treatment company were reluctant to replace the existing Trickling Filter system as it had proved to be low maintenance and an efficient wastewater treatment method. However, the random media trickling filters were no longer able to meet the effluent standards required of the high load demands.
So an alternative solution was needed that was not only cost effective to install but also delivered a sustainable long term solution.
The project was run by ACWA Services who asked 2H Water Technologies Design Specialists to help analyse the underlying treatment requirements in order to develop a design proposal which included key details such as specifying the correct weights of media to ensure it would be mechanically safe for the arduous conditions found in a roughing filter.
2H designed an innovative solution based on the crossflow capabilities of the BIOdek structured plastic media. This unique crossflow pattern delivers better levels of treatment than random media plus it prevents the build up of solids within the media pack which often occur in random media, particularly with high loads associated with roughing filters. Once the solution was agreed 2H supplied and installed 1090m3 of BIOdek 100m2/m3 media to fill a glass coated steel tank 17mtr diameter with 4800mm deep media.
Richard Manning MD, 2H stated “Due to our significant experience in delivering custom designed wastewater treatment installations in industrial processing operations we were able to design a specific solution for the Wrexham plant that delivered the higher levels of treatment required. This was achieved using the BIOdek structured plastic media with its crossflow pattern which delivers these higher levels of treatment plus prevents the build up of solids within the media pack which often occurs in random media, particularly with the high loads associated with roughing filters.”