Meaning of Sewage and Refuse
Refuse refers to all solid wastes such as pieces of paper leaves, garbage, ashes and dead animals while sewage refers to liquid wastes such as urine, kitchen wastes or water from laundry.
Types of Sewage
There are basically three types of sewage, namely:
Methods of Sewage Disposal
Methods of Refuse Disposal
Advantage: It is cheap to water system
Advantage: Decomposed materials (without toxic materials) may serve as fertilizers
Disadvantage: Turning may be laborious and odour offensive
There are modern and local ones and are of different types.
Advantage: Local technology can be used
Disadvantages: If not properly managed surrounding air may be polluted
Advantage:
(i) It help to reclaim waste land
(ii) It does not require high technology
(iii) It is not expensive
Disadvantage: Land to be used may be difficult to come by.
EVALUATION
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