CLIENTS & APPLICATIONS
Case profile:
-
Industrial Effluent Aeration
- Fast-track Aeration
- Leachate lagoon aeration
- Luss Wastewater Treatment Works
- Ightham Mote
- Rental System
- New Housing Development
- Nitrification upgrade
- Vegetable screening
- Industrial Effluent
Case Profile: Industrial Effluent Aeration
Client: Croda Colloids
Project Background
The effluent treatment plant at the Widnes works has been in existence for more than six years to deal with effluents generated from a gelatine production process. Originally the aeration process installed was a series of aeration panels bolted to the base of two annular aeration tanks. It was identified that many of the panel membranes had ruptured causing a major problem in the efficiency of the process.
Project Scope
Provide a retro-fit aeration system which could be serviced without future interruption to the effluent treatment process.
Scope of Work
Pollution Control supplied a removable fine bubble diffused air system, fitted to ballasted mats, which could easily be removed in the event of a failure or routine maintenance. The system would be connected to existing air main headers. Pollution Control also undertook the removal of the old aeration system and cleaning out the residual sludge left from the process.
Equipment Supplied
- 60 x 32 diffused aeration assemblies.
- Connecting flexible pipe work.
Installation
- To minimise disruption, one
tank only was emptied and cleaned whilst the other took on the whole volume of effluent flow.
- Using a mini excavator, crane, skip and dumper, a cleaning team had each tank cleaned within 3 days and the old panel
aeration system was removed.
- Pre-assembled aeration mats were installed using a crane and by the fifth day, the new system had been tested and the
tank was being refilled.
Results
| Old Panel System | New Pollution Control (UK) System | |
| Average BOD | 22 | 5.5 |
| S.A. | 44.5 | 2.9 |
| Range | 2-23.4 | 2-11 |
| Blower hours per day | 72 | 25 |
