7. Give the necessary precautions to be taken for making land-fill. 8. Why should a land-fill be not situated near the water supply system of community?9. Why should the wastes in land-fill be covered every time with a layer of fresh earth?10. What are the important steps needed for disposing of wastes?
Answers
Answer:
7)= Landfilling is considered as a waste treatment process, with its own inputs and outputs, rather than as a final disposal method for solid waste. Land-filling essentially involves long-term storage for inert materials along with relatively uncontrolled decomposition of biodegradable waste.
8)=The most serious form of water pollution from landfills is direct leachate contamination, considered a major environmental and human-health hazard. Leachate is a highly odorous black or brown liquid that commonly contains heavy metals, such a lead, and volatile organic compounds or VOCs.
9)=At the end of each working period, waste is covered with six to twelve inches of soil or other approved material. Daily cover reduces odors, keeps litter from scattering and helps deter scavengers. As waste arrives, it is compacted in layers within a small area to reduce the volume consumed within the landfill.
10)=Waste management is the actions and activities that are taken to manage the waste from its inception until its disposal and the time between its inception and disposal includes many stages; collection, transport, sorting, and treatment of waste while monitoring it.