Period
2009–2015
Client
Tehran Regional Water Company
Location
Highlands of District 22, Tehran
Stage
Design and Execution
Technical Specifications:
• One stilling basin
• One Parshall flume
• Three bar screens
• Six rapid mixing units
• Six pulsators
• 24 dual-layer rapid gravity filters
• Primary and secondary chlorination systems using chlorine gas
• 25,000 m³ storage reservoir
• Chemical, chlorination, general operation, and auxiliary buildings
• Overall capacity: 15 m³/s
Role of Moshanir
Consultant to the client for design and site supervision.
Special Achievements
• Design and selection of dual-layer filters with higher efficiency compared to conventional single-layer filters.
• Construction of filter structures on top of the storage reservoir to maintain water level.
• Due to the special topography of the treatment plant site, careful layout of microstrainers, pulsators, filters, and reservoir outside the corridor of high-voltage transmission lines crossing the site.
• Design and management of floodwaters originating from the northern highlands into natural waterways of the area.
• Stage I studies for the transfer system of surplus inflow water from the tunnel to Tehran Water Treatment Plant No. 2 or to the Kan River.
