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Contaminated Water In Third World Countries

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In third-world countries, water and sanitation facilities are often scarce or unreliable. Contaminated water and poor sanitation are linked to transmission of diseases such as chorea, dirrhoea, hepatitis, typhoid and polio. Each day 2000 children die from diarrhoea caused by contaminated water an inadequate sanitation and hygiene and overall around 842000 people are estimated to die each year. These diseases have the insidious effect of reducing people’s ability to access education and earn income – 272 million school days are lost each year to water-related diseases. There is a correlation between filtration rate and the effective removal of suspended materials. The higher the flow rate, the lower the effectiveness of the filter in removing sediments from the water. On the other hand, a filter must produce enough clean water per day to be useful for the people relying on it. The flow rate can be affected by several factors including the water level in the reservoir, the quantity and type of filter material used and the diameter of the filter. When water looks turbid, it is because fine particles are suspended in the water. When the particles are small enough they can stay suspended in the water due to natural movement from the constantly moving …show more content…

The turbidity is then calculated based on immersion depth. Now turbidity is measured using optoelectronic meters. Optoelectronic meters are special meters that detect and measure light. This is done by using an artificial light source, which emits light through a sample of liquid. The suspended particles scatter or absorb the light. The scattered light is then recorded on a photodetector. Scattered light is generally measured at a 90o angle. This measurement principle is known as nephelometry. A nephelometer is therefore a turbidity meter that measures scattered light at a 90o

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