Design, Supply and Delivery of Packaged Water Treatment Plant including WetSep, Interim Tanks, Media Filtration System, Effluent System and Sludge Management System at Tseung Kwan O Landfill
Bentonite and Sludge Slurry
Tseung Kwan O, Hong Kong
Bentonite Pool in 137 landfill (Hong Kong) is almost full and seeking for an alternative. A trial wastewater treatment plant has been installed to treat the wastewater collected from the sludge tanker. Wastewater is first collected in the sedimentation pool. The supernatant is then pumped into the WetSep for clarification. The effluent is further purified in the sand filter before used for recycling (floor spraying). The expansion of the plant will be carried out in late 2017.
Design, Supply and Installation of Chemically Enhanced Primary Treatment Package Plant at Repulse Bay Main Sewage Pumping Station
Repulse Bay, Hong Kong
Two “WetSep 60” are installed in the Repulse Bay Main Sewage Pumping Station for treatment served as a contingency and maintenance purpose. Sewage is temporarily pumped into the system. Effluent is disinfected and discharged after the treatment. Two weeks performance testing has been carried out. BOD5 and suspended solids removal rate reach 80% and 95% respectively which comply with the required standard.
Supply and Delivery of WetSep, Sand Filtration and Chlorine Dosing System for Jabal Sayid Project
Wash Bay Collection Sump
The whole treatment process is divided into three systems which are Coalescing Plate Oily Water Separator, WetSep and Sand/Medium Filter. The turbid wastewater in the third sump pit is transferred and treated in the WetSep. Effluent from WetSep storing in the Filter Feed Tank is polished by a sand filtration system equipped with chlorine dosing for disinfection. The treated water is stored in the Treated Water Tank and pressurized by a high pressure pump to wash the trucks in the Wash Bay. The wastewater in the Wash Bay is then flowed to the first pits of the Collection Sump.
Supply and Delivery of WetSep, Disc Filter, Ultrafiltration System and Filter Press at Bella Vista, Australia
Bella Vista and Cherrybrook, Australia
This project includes the construction of a twin 15 km tunnels from Bella Vista to Epping which are Australia’s longest rail tunnels. “WetSep 60E” with pH treatment system, disc filter and ultrafiltration system have been installed for the treatment of wastewater runoff and tunnel water. Reverse osmosis system is adopted for water reuse. Sludge dewatering system – filter press is also used to reduce the sludge’s water content.
Supply, Delivery and Installation of WetSep on Barge for the Three-Runway System Project
Hong Kong International Airport, Hong Kong
Deep cement mixing (DCM) method is adopted to improve the soft ground before land reclamation for the Three-Runway System Project. As DCM is applied using a barge, CSC safety approved “WetSep 20” and “WetSep 60” are installed on the barges to provide onsite treatment of the cement and sandy wastewater. Effluent is re-used for the subsequent cement mixing.
Supply, Delivery and Installation of WetSep Wastewater Treatment System at West Kowloon Refuse Transfer Station
Cheung Sha Wan, Hong Kong
Leachate is generated from the collected refuse which has a high dissolved organic content. The high BOD and COD content have eventually exceeded the existing SBR treatment capacity. A “WetSep 60” is then installed in the refuse transfer station to enhance the performance of the existing wastewater treatment.
Supply, Delivery and Installation of WetSep Wastewater Treatment System and Filter Press for Construction of Shatin to Central Link
Hin Keng, Hong Kong
The project includes the constructions of a 2,475m tunnel by drilling and blasting, and 1,400m twin tunnels by excavation using tunnel boring machine (TBM). A WetSep 80 is applied to the onsite treatment of wastewater generated from tunnel drilling and blasting. Sludge discharged from WetSep is dewatered by the containerized filter press. Both the WetSep and filter press have small footprint that can be placed in the underground construction site.