PRO004606 - Works - Lostock WTW Filter Refurbishment

Description

The works consists of the design, construction and commissioning of the following at Lostock WTW Refurbishment of the concrete structure and replacement of the filter plenum floor of 2 No. current rapid gravity filters (Filters 7 and 8) to prevent erosion of exposed surfaces, prevent water quality deterioration, and ensure satisfactory performance of the filter underdrains. Replacement of the steel plenum floors and air scour pipework system of 4 No. steel rapid gravity filters to prevent water quality deterioration, and ensure satisfactory performance of the filter underdrains. Topping up of anthracite media in 8 No. Filters final depth required 400mm (as per the Employer’s Standard Operating Procedure). Provision of 2no stainless steel access ladders in each of the concrete construction rapid gravity filters Replacement of the Clean Backwash Water Control Valve LKA-WW-VA007 (A5/AV6062) for the 6 No. steel rapid gravity filters Lot 1: The works consists of the design, construction and commissioning of the following at Lostock WTW Refurbishment of the concrete structure and replacement of the filter plenum floor of 2 No. current rapid gravity filters (Filters 7 and 8) to prevent erosion of exposed surfaces, prevent water quality deterioration, and ensure satisfactory performance of the filter underdrains. Replacement of the steel plenum floors and air scour pipework system of 4 No. steel rapid gravity filters to prevent water quality deterioration, and ensure satisfactory performance of the filter underdrains. Topping up of anthracite media in 8 No. Filters final depth required 400mm (as per the Employer’s Standard Operating Procedure). Provision of 2no stainless steel access ladders in each of the concrete construction rapid gravity filters Replacement of the Clean Backwash Water Control Valve LKA-WW-VA007 (A5/AV6062) for the 6 No. steel rapid gravity filters