Submersible pumps for collection system pumping
stationSince the early 1990s, Mott MacDonald has been
assisting the Shanghai Municipal Government with the implementation
of a number of environmental projects, many undertaken with
significant assistance from international funding organisations.
The aim is to achieve the requirements of the Shanghai Urban Master
Plan (1999 – 2020), which calls for 80% of the city’s wastewater to
be treated by 2020.
In 2004 Mott MacDonald was engaged to provide design review,
procurement support and construction management services for the
Shanghai Sewerage Project Phase III (SSPIII), which forms part of
the overall World Bank funded Shanghai Urban Environment Project.
This project also includes solid waste, urban planning and pilot
upgrading, catchment management and institutional strengthening
components.
The purpose of the Mott MacDonald services for the SSPIII was to
ensure that high quality designs and bidding documents were
prepared to World Bank requirements. Support was also provided to
ensure that designs were appropriate and cost effective. In
addition, construction management support was given to monitor and
advise on issues relating to construction programmes, construction
cost and quality, whilst also ensuring that health and safety
issues were adequately addressed during construction.
Pipejacking operations for the wastewater treatment
plant outfall
The cost of the SSPIII Project was approximately US$ 345million.
The wastewater collection system covers an area of
167.7km
2 and comprises 134km of collection sewers
(300-2,000mm diameter), including eight pumping stations, 9.5km of
trunk sewers (600-2,700mm diameter), including one pumping station,
and 136km of stormwater conveyors (800-3,500mm diameter), including
16 pumping stations. Wastewater flows are transferred to a
treatment plant located at Zhuyuan, in the Pudong district of
Shanghai, which has a designed treatment capacity of
500,000m
3 per day. Treated effluent is discharged
through twin outfall pipes into the Yangtze River.
Upon completion of SSPIII, the citywide wastewater collection
efficiency will be increased from 68% to 72% and the percentage of
wastewater treated increased from 44% to 56%.
