Background
Severn Trent had recently completed the construction of their Resource Recovery and Innovation Facility at Spernall STW allowing access to a testing facility for wastewater processes, providing an environment with no pressure to maintain a discharge permit quality.
The Overall Objective
The trial was installed with Severn Trent to allow the performance comparison of both an SPS lamella clarifier (integrated iHB20R) and an SPS dissolved air flotation (D10) unit on a primary sedimentation duty. The units were operated in parallel with and without ferric addition over a period of 2 weeks.
Solution
Both units tested performed similarly when no chemical addition was employed. Both were in line with industry-standard values. Improved performance above that seen with the lamella clarifier was seen with the DAF when ferric addition was employed.
Siltbuster Process Solutions provide wastewater solutions to both the municipal and industrial markets. We are constantly developing our products as part of our continuous improvement programme.
