Sector Sewerage

Project Type Sewerage Facilities Construction

Project Title Ho Chi Minh City Water Environment Improvement Project

Location Ho Chi Minh City, The Socialist Republic of Vietnam

Client People’s Committee of Ho Chi Minh City

Project Period 2002 – ongoing (as of 2012)

Problems addressed by the Project

Although the original urban drainage and sewerage system (combined system) constructed in 1870s were improved from 1950s to 1975, the old facilities were designed for a population of 1.5 million. The present population is more than 5 million which caused rainfall runoff increase because ground surfaces are covered by roads and buildings. Therefore, during the monsoon season, floods have occurred several times in the existing urban area. In addition, domestic and industrial wastewater of 729,000 m3 with a pollution load in terms of BOD5 of more than 193 tons was discharged daily to rivers and canals without any treatment. This pollution load deteriorates the water quality of rivers and canals to an unacceptable level. Hence the Government of Vietnam requested the Japanese Government to design and construct new treatment facilities.

Service Period

OC Global conducted master plan, feasibility study, basic design and detailed design of this project since 1998. In 2002, we started to work as a project management consultant and to assist the client through the modification of detailed design and the bidding process. Our services were as follows:

Updating and supplementation of detailed design prepared in the previous stage Finalization of the detailed design, quantity, cost estimation and tendering documentation Assistance in Pre-qualification process Study on institutional development Technology transfer on sewerage operations Coordination with the client and JICA Construction Supervision

Actual Project Recommendations

Sewage Treatment Plant : Total Capacity = 423,000 m3/day, Modified Aeration Process Sewage Pumping Stations : 2 Storm-water P/S (Q=42 m3/m x 2sites), 1 Sewage P/S (133.3 m3/m) Canal Improvement : L = 3,158 m, L = 4,128 m Interceptor Sewer : Main φ300-2200mm L = 6,540 m, Secondary φ200-900 mm L = 6,540m Conveyance Sewers : Double-cell Reinforced Concrete Box Culvert (1.3 m x 1.2 m x 2), L = 3,574 m Improvement of Existing Combined Sewers: L = 9.6 km