The Ellen Brook Wetlands is a natural waterway that has the largest catchment in the Swan Coastal Plain. The Ellen Brook Wetland Project consists of a series of basins fitted with filtration mediums in order to improve water quality. The pumping system supplies water to these basins to allow the filtration process to take place.
Rapallo was engaged as the Mechanical Engineering Consultant for the project to complete the pumping system detailed design. The design was completed to allow for the flow of water to four basins, to be constructed in the first stage of project, as well as an allowance for a remaining three basins to be built in the second stage of the project.
Rapallo completed pumping system design which included:
- The specification and selection of four variable speed pumps to account for the significant difference between the required minimum and maximum flow for the system and expansion of the pumps for stage 2 of the project.
- Pressure drop calculations for the pipework system over the range of various flows and to ensure appropriate flow rates to each of the separate basins.
- Selection and specification of strainers, isolation valves, non-return valves, air relief valves, pressure relief valves, flushing and scouring arrangement for the system.
- Development of the functional description for the control of the pumping system, including considerations for alarms, water hammer and fatigue considerations for the HDPE pipe.
- Operability and reliability reviews and considerations.
