14 May 2008
MUSCAT : For implementing the Al Seeb waste water project, Abdullah bin Abbas bin Ahmed, chairman of the board of directors of Oman Wastewater Services Company (OWSC) signed two contracts Al Maabela Gravity Drainage Network with Arab Contractors, and Al Seeb Costal Strip Vacuum Sewers Networks with Galfar worth more than RO145 million.
Omar bin Khalfan Al Wahaibi, chief executive officer of Oman Wastewater Services Company, said that Al Seeb Costal Strip Vacuum Sewers Networks project, signed with Galfar and worth RO86,904,894, consists of constructing 270km vacuum sewers network in the costal strip areas, north of Sultan Qaboos highway.
Ten vacuum stations will be constructed in the appointed places to suck wastewater through a network of vacuum sewers. The wastewater collected in the vacuum stations will then be transferred to the main sewage treatment plant through pumping.
The OWSC uses such technology after studying the topography and soil conditions of the area and it was discovered that the level of underground water is high and the area is flat and hence vacuum sewers system is the most feasible technology.
The use of vacuum sewer technology will avoid deep digging thereby preventing the lowering of the underground water level during the construction. The project will cover Manuma, Maabela North, Gashbeh, Sharadi, Al Seeb old town, Wadi Al Luwami, Hail North and Mawaleh North. The construction work for both projects is expected after two months.
For Al Maabela Gravity Drainage Network contract, worth RO58,531,567, Al Wahaibi said that the project which was signed with Arab Contractors & National Company for Construction, will consist of 170km of sewers that will be constructed in Al Maabela with the aim of connecting with the new wastewater network.
With gravity sewers being the preferred methods of providing a wastewater network to customers in Maabela, such system operates by laying a network of pipes that are sufficiently inclined to allow wastewater to flow through the system in the required direction by entirely natural 'gravitational' means.
This type of sewer will usually involve increasingly deep pipe construction, but it will avoid the long-term pumping and operational costs involved in a pressurised system. In a gravity network system, pumping stations are normally introduced when pipe construction becomes impractical due to depth considerations. The project basically covers all of the respective areas of Al Maabela. He added that both projects are expected to be completed after 4 yeas. The signed contracts are just two of the five contracts of Al Seeb Wastewater Project. There are a number of wastewater projects in the Muscat governorate like Al Amerat project and Mutrah project.
Omar Al Wahaibi said that the success of the project and the achievement of the set objectives will depend to a large extent on residents appreciating the nature of the project. Excavation work, road cutting and inconvenience are part of the nature of this project.
Oman Wastewater Services Company will act to ensure that this message reaches all residents through a booklet explaining the different phases of the project. Moreover, leaflets will be distributed before each phase of work. The OWSC welcomes any comments or queries through its toll free number 800 77 111.
MUSCAT : For implementing the Al Seeb waste water project, Abdullah bin Abbas bin Ahmed, chairman of the board of directors of Oman Wastewater Services Company (OWSC) signed two contracts Al Maabela Gravity Drainage Network with Arab Contractors, and Al Seeb Costal Strip Vacuum Sewers Networks with Galfar worth more than RO145 million.
Omar bin Khalfan Al Wahaibi, chief executive officer of Oman Wastewater Services Company, said that Al Seeb Costal Strip Vacuum Sewers Networks project, signed with Galfar and worth RO86,904,894, consists of constructing 270km vacuum sewers network in the costal strip areas, north of Sultan Qaboos highway.
Ten vacuum stations will be constructed in the appointed places to suck wastewater through a network of vacuum sewers. The wastewater collected in the vacuum stations will then be transferred to the main sewage treatment plant through pumping.
The OWSC uses such technology after studying the topography and soil conditions of the area and it was discovered that the level of underground water is high and the area is flat and hence vacuum sewers system is the most feasible technology.
The use of vacuum sewer technology will avoid deep digging thereby preventing the lowering of the underground water level during the construction. The project will cover Manuma, Maabela North, Gashbeh, Sharadi, Al Seeb old town, Wadi Al Luwami, Hail North and Mawaleh North. The construction work for both projects is expected after two months.
For Al Maabela Gravity Drainage Network contract, worth RO58,531,567, Al Wahaibi said that the project which was signed with Arab Contractors & National Company for Construction, will consist of 170km of sewers that will be constructed in Al Maabela with the aim of connecting with the new wastewater network.
With gravity sewers being the preferred methods of providing a wastewater network to customers in Maabela, such system operates by laying a network of pipes that are sufficiently inclined to allow wastewater to flow through the system in the required direction by entirely natural 'gravitational' means.
This type of sewer will usually involve increasingly deep pipe construction, but it will avoid the long-term pumping and operational costs involved in a pressurised system. In a gravity network system, pumping stations are normally introduced when pipe construction becomes impractical due to depth considerations. The project basically covers all of the respective areas of Al Maabela. He added that both projects are expected to be completed after 4 yeas. The signed contracts are just two of the five contracts of Al Seeb Wastewater Project. There are a number of wastewater projects in the Muscat governorate like Al Amerat project and Mutrah project.
Omar Al Wahaibi said that the success of the project and the achievement of the set objectives will depend to a large extent on residents appreciating the nature of the project. Excavation work, road cutting and inconvenience are part of the nature of this project.
Oman Wastewater Services Company will act to ensure that this message reaches all residents through a booklet explaining the different phases of the project. Moreover, leaflets will be distributed before each phase of work. The OWSC welcomes any comments or queries through its toll free number 800 77 111.
© Times of Oman 2008
