Household Water Treatment and Safe Storage Factsheet: Source ...
Household Water Treatment and Safe Storage Factsheet: Source ...
Household Water Treatment and Safe Storage Factsheet: Source ...
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<strong>Household</strong> <strong>Water</strong> <strong>Treatment</strong> <strong>and</strong> <strong>Safe</strong> <strong>Storage</strong><br />
Fact Sheet: Clay<br />
Key Data<br />
Inlet <strong>Water</strong> Criteria<br />
The treatment capacity of clay is optimum when water pH is about 5.6 (Jinadasa et al. 1988)<br />
Bucket system is only good for low fluoride concentration (93.8% 1<br />
Field<br />
Not<br />
available<br />
Not<br />
available<br />
Not<br />
available<br />
Not<br />
available<br />
Not<br />
available<br />
Not available<br />
1 Using bauxite from Malawi (Sajidu et al. 2008)<br />
<br />
<strong>Treatment</strong> efficiency depends on the quality of the clay <strong>and</strong> kind of filter used<br />
Operating Criteria<br />
Flow Rate Batch Volume Daily <strong>Water</strong> Supply<br />
Not available Not available Not available<br />
<br />
The flow rate, batch volume <strong>and</strong> daily water supply depend on the technique <strong>and</strong> kind of filter<br />
used<br />
Robustness<br />
<br />
<br />
The clay used in filters needs to be replaced or regenerated (very costly) when saturated<br />
It is necessary to measure the fluoride concentration in the outlet water to know when to<br />
replace or regenerate media<br />
Estimated Lifespan<br />
<br />
Clay media needs to be replaced every 25-40 days typically<br />
Manufacturing Requirements<br />
Worldwide Producers:<br />
Bricks are produced everywhere<br />
Local Production:<br />
Clay can be burnt in a kiln locally<br />
Materials:<br />
Clay<br />
Kiln<br />
Labour:<br />
Anyone can be trained to produce burnt clay chips<br />
Maintenance<br />
<br />
<br />
Frequent replacement or regeneration of clay<br />
Clean filter on a regular basis