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CASE STUDY Pulborough STW - Inlet Screen Upgrade A Wastewater Case Study HUBER Technology successfully completed the inlet screen upgrade at Pulborough STW installing 2 off of its Rotamat Ro9 700mm diameter Microstrainer screens with 6mm perforated plate mesh on an elevated inlet works structure. Project Profile Working with BTU, Southern Water’s small projects delivery team, Huber investigated a number of various different options to replace the old worn out 25mm automated raked bar screen and its associated mechanical dewaterer. The Population Equivalent for Pulborough was identified as 8,352 and had a consented full flow to treatment of 62 litres/sec. From investigation within the terminal pump station however recorded flows of up to 160 litres/sec had been experienced and resulted in the existing screens allowing unscreened influent into the balance to the storm tanks and blocking downstream pumps. HUBER Technology Supplied 2 off Ro9/700/6 Rotamat Combined Screens Fully Water Company Compliant Control panels M&E Installation carried out by HUBER personnel Objective & Solution The maximum size HUBER Rotamat Ro9/700 was chosen and installed to meet a maximum inflow of 160 litres/sec as had been experienced from the earlier site investigation. In addition to this during the design phase it was also decided to fit 2 off screens working on a duty / standby arrangement and remove the existing bypass bar screen.
