Pakistan faces water related problems for which desalination plants can provide an excellent solution science & technology can do wonders in case of power these can also be powered by nuclear power plants Pakistan has extensive knowledge in the field of nuclear science & with some effort could be able to build at least first generation nuclear power plants the country is resource rich in this field with uranium in the northern areas i read somewhere i came across this news
its from 2008 but none the less is quiet relevant to the topic at hand
please contribute your ideas as these can benefit Pakistan
Pakistan’s First Water Desalination-&-Power Plant
On the same day (Feb 11, 2008) when South Bound Lyari Expressway was inaugurated, another important project of Pakistan reached its opening milestone. This one is called the DHA Desalination and Power Plant. It is the first project of its kind in Pakistan which desalinates water from the Arabian Sea for human consumption as well as provides Electrical Power to the KESC Grid.
Pakistan’s First Water Desalination-&-Power Plant : ALL THINGS PAKISTAN
The capacity of the Power plant is 94 MW (Mega Watts) and that of the desalination plant is 3 MIGD (Million Imperial Gallons per Day). Electrical Power generated here is supplied to the 132 KV (kilo-volt) KESC grid whereas the Desalinated Water is supplied to CBC/DHA for local distribution.
The fuel for the Power Plant is Natural Gas which will be provided by the Sui Southern Gas Company Limited (SSGCL) via 20″ diameter pipeline. The Electrical Power is generated by two turbines. One is Gas fired with the generation capacity of 67MW. The other is Steam fired with the generation capacity of 27 MW.
Who Did What:
The project is carried out by DHA Cogen Limited (DCL). It is a Public Limited Company which was incorporated in the city of Karachi on January 19, 2003. The company is a joint venture between Defence Housing Authority, Karachi (DHA) and Sacoden Investments, Singapore (SI). The contract for building the Power Plant was given to Siemens AG Germany (SAG) who also supplied the two turbines used in the plant. The Desalination Plant is built by Alfa Level, Copenhagen, Denmark (ALC) and the civil works is carried out by Siemens Pakistan (SPK).
Following is the photo of DHA Desalination Plant
The Civil Works component of the project was a huge task in itself which included the necessary support infrastructure in terms of fuel gas supply, seawater intake, 132KV Sub Station, water treatment, under ground storage, workshop, stores, control room and administration offices.
A neat thing about this project is that a by-product of power generation i.e. steam is used as a fuel to desalinate water. The two power turbines of the Power station are connected together (as a single shaft configuration) along with a Heat Recovery Steam Generator (HRSG). The steam turbine is designed to exhaust steam directly to the two MED (multi effect distillation) plants to provide energy input to the MED desalination process.
The photo to the above right shows MED desalination plant installed at HUBCO Karachi. It is similar in MED processes but much smaller in design to the DHA Desalination plant.
Another Success Story of Pakistani Engineers
Here I also want to mention yet another success story coming out of Pakistan’s Public universities. The local project Manager of Siemens AG Germany overseeing the work on the Power Plant is Mr. Yasir Jilani, a EE graduate from the NED University of Engineering and Technology, Karachi. I want to present it yet another success story of Engineering graduates coming out of Pakistan’s public Educational System.
Location of the Plant
Plant is located at the southern tip of DHA phase VIII. Google Earth has not been updated for Karachi for many years now therefore it still shows a flat ground in most of DHA phase VIII. The pointer in following image shows where the present day plant is located
In an age when Pakistan is facing serious power shortage, this plant is certainly a welcome addition.
Pakistan’s Other Water Desalination Plants:
1. A desalination plant was installed in 1987 in Saindak Copper Mines in Balochistan. This plant uses the brackish water Reverse Osmosis (BWRO) process.
2. Another desalination plant was installed in 1995 and commissioned in 1996 at the HUBCO power station outside Karachi. This plant uses Reheat type Multi-effect distillation (MED) desalination.
3. KANUPP near Karachi operates a Sea Water Reverse Osmosis (SWRO) desalination plant to meet its operating requirements.
1. DHA Cogen Limited
2. Dawn Newspaper Report on Plant Inauguration
pakistan desalination plant moves-forward
The planned desal plant at Port Qasim is now back on track with a fresh developer team. It has been a long wait.
Pakistan passed a major desal milestone on 11 February, as a consortium of CEM, (through Enviro Desal), GE and Bushnak Group signed a memorandum of understanding with the Karachi Water and Sewerage Board and the City District Government of Karachi, outlining plans for a 50MIGD (227,300m3/d) desalination facility at Korangi.
It has been a long journey for CEM’s Sami Khan, the inspiration behind the project. California Enviro-Management signed the first MOU with CDGK & KWSB in October 2004 to develop two 25 MIGD (95,000m³³/d) SWRO plants at Port Qasim and Korangi, respectively. It was not until August 2005, however, that CEM was granted an exclusive concession, and a preliminary tariff was agreed.
On 26 December 2006, CEM and equity and EPC partner ITT signed the off-take agreement with KWSB following prolonged negotiations, paving the way for financial close. Under a revised agreement, the two plants were to be merged into one 50MIGD facility to be located at Port Qasim. Shortly afterwards, however, ITT withdrew its equity commitment, throwing the project into doubt. ITT had been down to commit 44% of the project equity, and OPIC’s commitment to underwrite the debt portion of the project was contingent on at least 25% of the project equity coming from the US.
It was a major setback, but the indefatigable Khan sought out new partners, and soon had a team of GE and Bushnak Group behind him. The group inked an agreement to work together in July 2007.
The recent signing is a significant step forward, as it firms up a number of key commitments, including provisional water tariffs. The agreement “includes all the terms and conditions for developing the project to financial close,” Khan told GWI. It does not constitute a water purchase agreement in full final form, however, as GE’s Ali Ben Haj Hamida explains: “It’s just an MOU right now. Later on there will be a water purchase agreement, [and] in the MOU there is an understanding of what the tariff will be.” The developer group is said to be happy with the number.
“The next big step is the financial close,” says Khan. He expects the $350 million project to reach this position in 6 to 8 months. Under the agreement, GE and Bushnak will arrange the financing.
“GE is interested in the project as an investor, not just as a technology supplier,” explains Adil Bushnak. “My role will be to find other investors,” one of which is rumoured to be the Abu Dhabi Investment Company. Bushnak Group will also take an O&M role under a 25-year BOOT contract.
It looks like Khan’s dream will become a reality, and he is positive about the future: “Karachi needs ten more like this, and the city, the mayor and KWSB are working hard to bring in genuine developers.”
Pakistan desalination plant moves forward | Global Water Intelligence - Archive: Global Water Intelligence
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