INNOVATIVE WATER TREATMENT SYSTEM FOR GOOD HEALTH.
We are proposing to construct adsorption-based Biofilters that can provide safe drinking water.
The Biosand filters of five layer matrix would be constructed from local materials such as cement, river sand, gravel and PVC pipes and sold at a very affordable price. And they would be modified with Iron and Manganese oxide coated brick chips.
Water enters the filters and filters first through the coarse river sand and composite Iron and Manganese oxides. While the sand traps coarse particles, composite Iron and Manganese oxides adsorb dissolved toxic metals. At the bottom of the filter bed, the fine river sand will remove fine particles in the water and the non coated bricks stabilize the water flow. With relatively good aeration, the oxidant/adsorbent Iron and Manganese oxides will be continuously regenerate in situ by the activities of Iron - and Manganese-oxidizing bacteria that would be immobilized in the filter bed.
This solution will serve to improve the water quality of the people greatly and ensure that the water related epidemic outbreak in the areas is reduced and subsequently eradicated. It shall provide clean and safe drinking water, both in terms of pathogens and toxic heavy metals such as Arsenic, Iron, Manganese, Lead and Fluoride, and then save the lives of thousands of people living in these areas. On the Economic impact, their direct income will be retained from the expenses due to curing of water borne illnesses. It will save the costs from time and energy from perhaps boiling water. Productivity of these rural dwellers will also be increased due to better health conditions.
These villages have several sources of water like the local Wells and Boreholes which Government and some NGOs built. However, their water problem lies on their water often contaminated by organic and inorganic contaminants which has resulted in serious all-year-round health challenges among the people. The sources of these water contaminants are perhaps due to illegal mining activities by the locals in these areas and poor sanitation of the people.
Our project is of global target; but for now, we have proposed to commence operation in 15 villages of Zamfara state Nigeria, comprising more than 2000 poor households which have been suffering from serious water-related health issues over a decade. An example of these vulnerable populations is located in three Local Government Areas (Anka, Bunkuyum and Maru) of the state. Some of the villages are Abare, Tungare, Guru, Tungar, Daji, Sunke, Bagega and Duza. They have large reproductive capacity because their men are polygamous. Most of them are very poor and uneducated, and there population is over 20000.
The solution shall impact lives because it sustains management of water and sanitation for all; and as a result,many lives will be saved leading to economic and productivity impacts of the society. On the Economic impact, people's direct income shall be retained from the expenses due to curing of water borne diseases. It will save the costs from time and energy from perhaps boiling water. And due to better health conditions, their productivity would be increased.
We are proposing to design and mass-produce portable, low-cost, adsorption-based Biosand filter units that can provide clean and safe drinking water for poor households facing serious water related epidemic outbreak in Nigeria.
The Biosand filters are designed and constructed from local materials such as cement, river sand, gravel and PVC pipes and sold to these communities at a very affordable price.
They would be modified with Iron oxides - and Manganese oxides coated brick chips. The filter bed would be a five layered matrix with coarse river sand on top of the matrix followed by Manganese oxides - and Iron oxides - coated bricks separated by wood charcoal, and the last layer of fine river sand mixed with non-coated bricks.
Water enters the filtration units and filters first through the coarse river sand and composite Iron and Manganese oxides. While the sand traps coarse particles, composite Iron and Manganese oxides adsorb dissolved toxic metals. If As(iii) is present in the influence water, it will be oxidized by the Manganese oxides to As(v), which is easily removed by Iron oxides. At the bottom of the filter bed, the fine river sand will remove fine particles in the water and the non coated bricks stabilize the water flow. With relatively good aeration, the oxidant/adsorbent Iron and Manganese oxides will be continuously regenerate in situ by the activities of Iron - and Manganese-oxidizing bacteria that would be immobilized in the filter bed. Application of water is manual using containers, but it can be automated with overhead tank for those that can afford it.
Unlike the most common types of Biosand filters used in most African communities today, this current and innovative Biosand filters are modified for dual functions which are simultaneous removal of harmful microorganisms and heavy metal contaminants from water by a combination of biological and physicochemical sorption processes. Another great advantage of the system is its non recurring costs which are always associated with other water treatment methods. Above all, it is sustainable and easy to use by poor, uneducated people.
- Prevent infectious disease outbreaks and vector-borne illnesses
- Pilot
