DESIGN
Having identified high levels of Suspended Solids & COD present within their wastewater stream, a leading UK cosmetic manufacturer – already working with MSA Environmental consultancy (https://www.gomsa.co.uk/), approached Watermark Projects to provide a turn-key solution for their wastewater treatment.
The initial site due diligence delivered by MSA identified that Dissolved Air Flotation would be an ideal process to address the various requirements for this client, providing an open design for Watermark Projects to expand and implement.
Following further investigation with the client, the Watermark Projects team were able to offer a final design focused around our Model 10 DAF system, a skid mounted DAF package with a treatment capacity of up to 20,000 Litres per hour – over double the clients current treatment requirement to accommodate planned future growth. The complete effluent treatment plant design would also include;
• Pre-Treatment Balancing.
• Hot & Cold Line Mixing (for cooling).
• Aeration.
• Agitation.
• Pre-Treatment pH Monitoring.
• Level Control.
• Foam Suppression.
As well as additional ancillary instrumentation for monitoring and data capture.
With the preliminary works completed the client opted for an initial 12 week trial utilising one of our Model 6 DAF units (treatment capacity of up to 10,000 litres per hour – suitable for their current throughput requirement). Not only would this enable the client to see how effective the DAF treatment process would be for their particular waste stream, but also familiarise their engineering team with the operation and maintenance of the future treatment plant.
Following this trial exercise, the client decided to continue hiring the Model 6 DAF system as an interim solution during the procurement & manufacture of their final treatment package, ensuring they remained compliant during the build process.
MANUFACTURE
This project was overseen by the Watermark Projects team at our Manchester head office which included the procurement of the various ancillary items, as well as the manufacture of the Model 10 DAF (in our 17,500 sq ft manufacturing facility).
With the additional instrumentation processes required for the final treatment system (including aeration, foam suppression etc), a large element for this project was the Balance Tank where much of the pre-treatment/conditioning would take place prior to treatment within the DAF itself.
For this, a high-capacity Balance Tank was specially designed with the team over at Chem Resits UK (https://www.chemresist.com/). Due to the various equipment integration required, this 80,000 Litre Balance Tank turned out to be both the largest and heaviest that Chem Resist have manufactured to date.
INSTALLATION & COMMISSIONING
During the installation phase it was key to ensure minimal downtime of ongoing treatment. Therefore, the interim Model 6 DAF was re-located on site and kept in operation throughout.
However, this meant a phased installation process had to be adopted to ensure supporting equipment (existing Balance Tank, Feed & Discharge pipework etc) also remained in operation until the new equipment was fully installed – ready to switchover and continue feeding the interim DAF.
Thanks to our skid mounted DAF design – where all integrated pipework and wiring is already completed prior to delivery, the final changeover to the Model 10 was completed within a matter of hours.
With the Model 10 now fully operational, the Model 6 was removed from site and is now ready for trial or rental to another customer.
Watermark Projects would like to thank our customer and suppliers for their support on this project. The team here are thrilled to have achieved our clients objectives and look forward to working with them moving forward.