Unilever is one of the global leaders in the food/condiment, personal care and household product markets with £2 billion in annual sales in the UK alone.
Ogden Water have installed a full, turn-key trade effluent plant for one of their manufacturing sites.
The system includes:
- Extensive double-skinned pipework from the factory to the plant
- Primary filtration using a premium Salsnes screen
- Balancing tank to maintain a consistent incoming effluent quality
- Chemical dosing and mixing
- Chemical storage tanks
- Dissolved Air Floatation (DAF)
- Chemical supply
- Sludge tank
At a run rate of 10m3/hr, total suspended solids are reduced by more than 95% from a typical concentration of 5000mg/L in the raw effluent to less than 100mg/L in the treated water to discharge. COD levels are down from 20,000mg/L in the raw effluent to less than 1000mg/L in the treated water.
From these values, the cost reductions based on the MOGDEN formula are:
|Cost per m3||Cost per day||Cost per year|
The site also benefits from treatment chemical supply and a monthly service visit from Ogden Water, which includes sampling and analysis, equipment inspection and calibration, recommendations for optimisation and advice on how to maximise efficiency with the treatment plant as a whole.