In some parts of Africa, from rural to some urban areas, access to healthy and good drinking water still remains a challenge. Nearly half of hospital beds are still occupied by people suffering from water borne diseases and the numbers of children suffering from diarrheal diseases continue to increase. It is against this background that simple technologies are required to combat this problem across the affected areas of our dear continent, Africa.
The proposed idea is simple, easy and does not require any technical expertise. This home based technology is scalable and can be applied for large volumes of water. It provides an inexpensive, cost effective and an efficient way of improving the quality and safety of water for humans and animals in rural Africa where technologies for efficient water purification are missing and would go on to reduce water borne disease outbreaks in human and animal populations.
The proposed idea involves simple filtration using any clean cloth (preferable nylon) covered with ground charcoal .Whiles the cloth traps impurities during the filtration process, the charcoal absorbs the toxins that may be present in the water sample (as charcoal is a rich source of carbon). A number of lime fruits are then cut into pieces and then dropped into the filtered water. This mixture is then covered with a black rubber bag (this absorbs UV radiations from the sun) and then exposed to the sun for at least 6 hours. This exposure time could be increased in a cloudy day. The sunlight (UV radiations) along the lime helps to disinfect and remove detectable amounts of harmful bacteria such as E.coli which causes most water borne ailments.
The use of this simple technology in poor households in rural and urban Africa would help reduce the incidence of diarrhea and other water borne diseases in Africa.