Reverse osmosis (RO) is a filtration method that removes many types of large molecules and ions from solutions by applying pressure to the solution when it is on one side of a selective membrane. The result is that the solute is retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side. To be "selective," this membrane should not allow large molecules or ions through the pores (holes), but should allow smaller components of the solution (such as the solvent) to pass freely.

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1m water purification tablets for rain-hit areas

Islamabad—More than one million water purification tablets will be supplied to save the rain-hit people from water borne diseases especially cholera, diarrhea in Sindh province, Chairman, National Disaster Management Authority (NDMA), Zafar Qadir said on Monday. “We are seriously concerned with spread of epidemic diseases. Therefore, we are supplying aqua tablets to save the people especially the children from water borne diseases such as cholera, diarrhea and dysentery,” he told APP.

Zafar Qadir informed that all the disaster management teams of the Authority are also being dispatched to the affected areas for deployment, adding, these team will stay there till the end of the disaster. He said ten thousand tents are being provided to the rain affected people of Badin district while 10 thousand food ration packets are also being distributed among the rain victims through Utility Stores on daily basis on behalf of NDMA.

The Chairman informed that distribution of ration packets to affected people would continue till their rehabilitation. Besides, he informed that NDMA is also introducing the new concept of telemedicine with the objective to provide medical treatment to rain affected people on modern lines and save their precious lives. Zafar Qadir said that so far no international donor agency has extended cooperation and the entire rescue and relief work is being carried out at the expenses of Federal and Sindh Governments.

He, however, seek the cooperation of local NGOs, philanthropists as around three months are required to bring the situation to normalcy. He said on the directive of Prime Minister Syed Yusuf Raza Gilani, the Authority has distributed relief items including 12,700 tents, three water purification plants and 23,000 family ration packs, to the flood-affected people in Sindh. The relief goods have been distributed in the inundated districts of Badin, Tando Muhammad Khan and Mirpur Khas besides the badly damaged Mithi Town of Tharparker District, he added.

The Chairman informed that the National Emergency Operations Room at the NDMA is functioning round-the-clock to receive requirements and coordinate response. About crops, he informed that around 60 percent of cotton crops were damaged in the flood affected areas. “Crops of sugar-cane were not damaged in flood hit areas because the height of the sugar-cane is three feet above the flood water level,” he added. He said that all armed forces were managing the rescue part of flood relief operations.—APP

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