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Upflow roughing filter

459 bytes added, 22:28, 18 September 2012

→‎Construction, operations and maintenance

After a year or more (depending on the turbidity of the raw water), hydraulic cleaning alone is no longer adequate, and the different filter layers have to be removed and cleaned, which requires several people. The filter should be cleaned before the turbidity of the raw water reaches a maximum (e.g. before the rainy season starts). Occasionally, the valves need to be repaired or replaced, and if a steel weir is used this may need to be painted or replaced. New caretakers can be trained by experienced technicians.

 

====Caretaker training====

Comprehensive training of local staff is essential since technical installations must be run by operators. While most technical problems can be eliminated or reduced by appropriate design and construction, human aspects which might affect treatment plant operation are more difficult to control. Careful, formal training of caretakers and extensive support, guidance, and supervision in the first years of operation are necessary.

====Potential problems====

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