A study on a novel sewer overflow screening system

After heavy rainfall, sewer overflow spills into receiving water bodies, causing serious concern for the environment and public health. To overcome this challenge novel sewer overflow screening devices have been developed and evaluated to overcome the limitations of low capture efficiency and high initial and maintenance costs. The proposed 'Comb Separator' was designed and testing through a comprehensive analysing involving numerical model, laboratory and sensitivity testing. Comparisons of the 'comb separator' with the industry standard Hydro-JetTM suggest that the former can perform better when there are blockages, and that it has a higher capture efficiency during periods of low flow.