The efficiency of waste-water treatment units depends on the quality of materials used in the design of the units, the way of handling of the machines and the maintenance culture adopted while the machines are in operation and when they are at rest.
The material used in making or designing each unit has to be made to tackle the functions meant for them without any interference. They should be rust free and should also be free from the influence termites and other ants or insects.
They should be readily available and have spare parts. Depending on the unit in question, the machines should be able to resist the influence of pressure on them without their being damaged. In terms of the handling of the machines in the units, they should be properly handled and maintained.
Areas that need to be scooped should not be allowed to accumulate in excess so as not to interfere with their proper functioning and that of others. The same should be done to areas needing oiling or greasing.
The unit needing nature to act on it should have its site cleared and not being overburdened by solid waste that are not part of sewage and waste- water.
Equally, heavy vehicles, equipment’s or machines should not be placed on top of the units machines as doing so would destroy them.
In conclusion, from all the foregoing, one can conclude that corrosion which is the rusting of metal in pipes or tanks due to the corrosive action of water, waste-water or soil is a major factor in the design of waste-water treatment units.
This is because it has negative effects on the objectives and goals of treatment of sewage and waste-water. In order to defeat the ill effects of corrosion, the design of treatment units has to be made with materials that can resist rust still retaining its functionality and the desired longevity or where such is not possible, the application of safety measures to allow the proper functioning of the metallic materials used in making such units become mandatory, hence the need for this last unit.