Timely transferring water filters to people in flood areas

On October 2nd 2013, 50 IET water filters were delivered to families in two communes of Cong Binh and Tuong Son, Nong Cong district, Thanh Hoa province, to solve the urgent demand for clean water due to the direct effects of Storm No. 10 which caused serious floods and isolated thousands of households.

The water filters were provided by the Institute of Environmental Technology under VAST, in coordination with Thanh Hoa provincial Union of Science and Technology Associations.

The activity also drew the participation of representatives from Thanh Hoa provincial Department of Health, leaders of Nong Cong district, leaders of Cong Binh and Tuong Son communes.

Flood water is turbid water, which has golden brown colour from alluvial soil; high content of small soil particles suspended in water; small “glue” particles that people can not see and will not be trapped in common filters; can bring dissolved pollutants such as organic substances from daily waste and muck, heavy metal salt molecules from soil and mining areas, bacteria and fungi causing diseases in humans. Making drinking water from flood water by water filters can eliminate all impurities harmful to people’s health in difficult living conditions without electricity and fuel is not a simple matter because it is necessary to take out of water super small-size elements with completely different chemical, physical and biological characteristics.

Carrying out a research project of the National Centre for Rural Water Supply and Sanitation, scientists from the Institute of Environmental Technology successfully made IET water filters for flooded areas. The key stage of the technology to eliminate impurities out of water in this tool is to use multi-component water filtering material, including nanocomposite from silica transplanted silver nano particles in order to absorb heavy metals and destroy micro-organisms causing disease, and using denatured active coal to absorb organic pollutants. These materials were made from available materials in Vietnam. Tests of natural water filtered through IET filters showed that the results meet requirements of QCVN 02: 2009/BYT standard issued by the Ministry of Health and have no E.coli and coliform bacteria.

With the filtering speed of 2-3 litres per hour, IET water filter meets drinking water needs of households with four or five people. To continue using the filter, it is necessary to replace filtering materials in about 100g weight into filtering pipe in the filter. IET water filters are suitable for people in flood areas because they are small, easy to use and do not require electricity. People only pour natural water into the filter after water has been dissolved with alum and deposited in half an hour.

Following are several photos of staff from the Institute of Environmental Technology’s transferring IET water filters to families in Nong Cong district in two days in October 2013, six hours after since receiving a request from local authorities.

Representatives from Thanh Hoa provincial Union of Science and Technology Associations, Nong Cong district Department of Agriculture and the Institute of Environmental Technology transported relief to people in Cong Binh commune

IET water filters and all relief handed to people in Dong Coc village on October 2nd 2013


Tran Van Hiep – chairman of Cong Binh commune presented IET water filters to people in Dong Coc village

Staff from the Institute of Environmental Technology under VAST instructed people in Cong Binh commune on how to use IET water filters

Translated by Tuyet Nhung

Link to Vietnamese Version


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