Background
Lletty Brongu Wastewater Treatment Works treats predominantly domestic sewage, with some local light-industry wastewaters, from the town of Maesteg near Bridgend in South Wales. The works comprises preliminary treatment (screens, grit removal), primary settlement followed by trickling filters and humus settlement prior to discharge to the Afon Llynfi.
The Overall Objective
The two existing Humus Settlement Tanks were being refurbished and upgraded as part of the scheme to provide enhanced clarification for phosphorus removal. One Humus Tank was to be taken offline at a time for upgrading.
Solution
Siltbuster Process Solutions worked closely with the client (JN Bentley and Mott MacDonald) providing a suitable solution capable of treating 50% of the works Full Flow to Treatment (FFT). One Splitter tank was used to split the flows of up to 108 l/s three-ways to three SPS D100 DAFs for solids/liquids separation of the unsettled trickling filter effluent prior to discharge.
SPS supported the client throughout the 8 week Hire period to ensure that the discharge consent was never at risk.
