AWMA were engaged by Enviro Process Engineering (HK) Co. Ltd to design and manufacture a downward opening decant weir penstock as part of an upgrade to the UV treatment area of the Siu Ho Wan Sewage Treatment Works in Hong Kong.
The UV outlet penstock is a critical part of the UV treatment process. Matthew Ho (Enviro Process Engineering (HK) Co. Ltd.) stated that;
the outlet weir needs to regularly adjust position to control the upstream water level passing over the UV lamps. This water depth is critical to ensuring the correct operation of the UV disinfection process. AWMA understood these requirements and offered a design capable of modulating duty inclusive of a dual spindle drive with automated spindle lubrication system.
AWMA’s DLF Penstock solution was custom designed to suit the 2800mm wide x 1150mm high UV channel. To address issues associated with the highly corrosive service environment, the penstock was manufactured from grade 2205 duplex stainless steel.
