Compact Nijhuis DAF solved footprint challenges at Temporary Sewage Treatment Plant ‘Sha Tau Kok’
To maintain sewage treatment services for Sha Tau Kok district in Hongkong during the expansion works, a Temporary Sewage Treatment Plant (TSTP) is required to be built within a small footprint of less than 750 square metre in the existing plant area. The compact Nijhuis DAF (type IPF) fitted perfectly within the small footprint restrictions.
"The compact Nijhuis DAF (type IPF) fitted perfectly within the small footprint restrictions."
Short construction period
To tackle the challenges on short construction period and small site footprint, the overall project team adopts Moving Bed Biofilm Reactor (MBBR) technology in the project. MBBR is an advanced wastewater treatment technology using specialised plastic carriers to create a surface on which microorganisms treating the wastewater are grown.
It is renowned for its compactness and high treatment efficiency. Nijhuis Industries has provided a DAF system which functions as activated sludge flotation. The complete plant consists of an inlet pumping station, Package Pre-Treatment Plants, Equalization Tank, Mechanical Filter Mesh, Moving Bed Biofilm Reactor (MBBR) Tank, Flocculation Tank and Dissolved Air Flotation Unit and In-pipe UV Disinfection System.
Large-scale new to build Sewage Treatment plant will become the largest MBBR plant in Hong Kong
The project has commenced in March 2019 and is in operation since June 2020. Due to the short delivery of the Nijhuis DAF and technologies from other partners, Sha Tau Kok achieved the urgent delivery schedule of the complete temporary plant. The plant has a treatment capacity of 2,500 m3/day. The actual large-scale new to build Sewage Treatment plant will become the largest MBBR plant in Hong Kong.