Presented by Noor Ahmed Project Coordinator

Desalination Plant: An effort to Mitigate Drinking Water Crisis of Southwest Coastal Region of

Bangladesh

Presented by

Noor Ahmed

Project Coordinator

Prodipan

Impact of Saline Water Intrusion in the Southwest coastal region of Bangladesh

Impact on Drinking Water

Impact on Livelihood

Impact on Environment/ Ecosystem

Impact on Health

Impact on Agriculture

Source of drinking water in the salinity affected area

Pond Sand Filter (PSF)

Pond Tube well

Rainwater Harvester

Limitations of PSF, Rain Water Harvester, Pond and Tube well

Cannot remove dissolved solid (such as arsenic, calcium, magnesium, iron, odor, color and so on)

Micro organism grow after two to three months

Cannot not supply water whole the year

Output rate is low

Not free form viruses and bacteria

Cannot remove Salinity

An effort of Prodipan to mitigate drinking water crisis of southwest coastal region of Bangladesh

Prodipan has installed a desalination plant in the upazila of Sarankhola of Bagerhat under the project of Rehabilitation support for the victims of cyclone Sidr 2007.

Desalination Plant Control Panel

Main mechanism of desalination plant:

The main mechanism of desalination plant is reverse osmosis. Reverse osmosis is a liquid filtration method for removing many types of large atomic molucules from smaller molecules, by forcing the liquid at high pressure through a membrane with pores (holes) just big enough to allow the small molecules to pass through.

It is most commonly known for its use in drinking water purification from seawater, removing the salt and other substances from the water molecules.

Demand of desalination plant water

Demand of desalination plant water is tremendous

Our plant capacity is 1000 liter/hour but the demand is more than supply.

We are running desalination plant from January 2010 and our average sale is 1000 liter per day.

Advantages of Desalination Plant

Remove all kinds of dissolve and suspended materials and chemicals (such as arsenic, calcium, magnesium, iron, odor, sediment, color and so on)

Initial installation cost is relatively high but considering long term it is most appropriate technology for salinity water treatment

Produce pure, clean and potable water

Output rate is high

Produce viruses, bacteria and diseases free water

Remove salinity

Some Key Feature of desalination Plant

Installation Cost is approximate 10 lac for 1000 liter/hour plant

Per liter production cost is 0.35 paisa (plant run by diesel generator)

Per liter production cost is 0.25 paisa (plant run by electricity)

Production cost depends on plant capacity

Challenges of Desalination Plant

Installation cost is relatively high

Needs skill person to operate

Operation and maintenance cost is relatively high

Needs electricity to run the plant

Safe and secure place is needed for desalination plant

Community based management with finacial contribution

Thank You