Press

Access Engineering successfully completed the rehabilitation work of Six Wastewater Pump Stations

Access Engineering PLC recently announced the successful completion of the rehabilitation work of six wastewater pump stations in Dehiwala, Mt. Lavinia and Kolonnawa under the Greater Colombo Wastewater Management Project.

The sewerage systems in Dehiwala, Mt. Lavinia Municipal Council and Kollonnawa Urban Council areas had been built during 1983-1987 based on a sewerage Master Plan prepared by Howard Humphrey in 1972. While these timeworn sewerage systems accounts significantly to the overall wastewater disposal of the suburbs, no rehabilitation work has been carried out for the last 25 years, causing the systems to make severe failures in function.

Recognizing the criticality of the requirement, the Greater Colombo Wastewater Management Project was initiated by National Water Supply and Drainage Board. And the project was funded by Asian Development Bank intending to improve the urban environment and public health of the urban and suburban residents of Colombo. The contract to rehabilitate six existing wastewater pump stations was subcontracted to Access Engineering PLC by CCB Envico Pty Ltd; an Australia based company that holds the main contract to the Project.

The Kollonnawa sewerage system consists of 25km sewer network and four wastewater pump stations (Kolonnawa, Wellampitiya, Meetotamulla, Dematagoda) including associated force mains. The entire flow of Kollonnawa Sewerage System is discharged to a manhole in the gravity sewer line which carries the flow to Maligawatta pump station.

Dehiwala & Mt. Lavinia Sewerage System which consists of 25 km sewerage network and two wastewater pump stations (Dehiwala, Mt. Lavinia) and associated force mains, pump the entire flow into Wellawatta sea outfall.

The scope of the project completed includes rehabilitation of four wastewater pump stations under Kollonawa sewerage system and two pump stations of Dehiwala & Mt. Lavnia sewerage system. The project is to rehabilitate the above pump stations with fitted SCADA systems which automate the operation process by allowing operators and facility personnel to monitor and control the equipment either locally or remotely. Under the contract, each pump station consists of a sanitary and office facilities required for the respective operational staff.

Completed Mount Lavinia Pump Station

Mr. Jeewaka Dahanayaka ; The project manager of rehabilitation work of siz pump stations under Greater Colombo Waste Water Management Project