Context

Suez Industrial Solutions was contracted by Croda International plc to modernise the existing wastewater treatment facility at its HQ in Goole, Yorkshire. Suez Industrial Solutions commissioned 2H Water Technologies to upgrade the plant’s two biofilters, both of which contained random media that had become blinded with solids.

Challenge

2H was tasked with providing a solution that would reduce COD/BOD by up to 41% and 56% respectively, and guarantee process performance improvements based on:

  • average influent flow: 800m3/day
  • influent COD: 2174kg/day
  • influent BOD: 1152 kg/day

Solution

2H Water Technologies designed, built and installed a solution based on a combination of BIOdek cross flow and vertical flow structured plastic media. 2H brought the project to a successful conclusion when the second biofilter became operational.

  • Media type: BIOdek KFP627 cross flow and KVP vertical flow media
  • Media surface area: 125m2/m3
  • Media volume: 2376m3
  • Media bed depth: 3.6m

Key features and benefits

  • Improves influent distribution through all media
  • Reduces potential for blockage
  • Maximises biomass population
  • Open channels allow easy discharge of decaying biomass
  • BIOdek™ structured plastic media is highly durable
  • Large surface area used to construct modules with optimal compressive strength
  • High void volume and large specific surface area for higher organic loadings
  • Easy to operate
  • Low energy requirements, supervision and capital expense