Health problem during time of segregation, reuse, recovery, recycling of solid waste
Ø During time of segregation
1.
Workers and rag pickers can be infected during picking of biodegradable and Non-biodegradable
waste.
2.
If biodegradable and non-biodegradables or wet and dry wastes are not put
separately, it can creates bad odor.
3. Possible
health hazard include raised level of infant mortality, non-communicable
disease such as hand/leg injury by sharp edge material, respirational
infections, eye infection,.
4. Communicable
diseases such as Diarrhoea & dysentery (due to flies), skin disease
Ø During time of reuse
Health risk can be arises
from transportation and handling of organic waste, processing application of
organics from mixed municipal waste to soil, cultivation on old dumps and
feeding of animal with waste and hence many factor are involved over the risk
of human –animal disease links.
Ø During time of recycling
1.
During the recovery and recycling process of the solid waste, it creates the
various health problems because in production of electricity, there is the generation
of gas evolved in the environment in which some toxic gases are present, which
affects on the respiration system of the surrounding peoples and working people
there on.
2.
Recovery and recycling process creates bad odor, particulate matter emissions
that lead to air pollution and also creates metal illness to the humans.
Ø During time of resource recovery
Biological
and thermal treatment of waste can result in recovery of useful product such as
energy or compost.
Biological
Processes: In this treatment involves using micro-organisms to decompose the
biodegradable components of waste.
Two
types of process are use:
i)
Aerobic processes: Windrow composting, aerated static pile composting and in
vessel composting, vermiculture etc. Utilizable product is compost.
ii)
Anaerobic processes: Low solids anaerobic digestion, high solids anaerobic digestion.
Utilizable product is methane gas.
In
India, aerobic composting plants have been used to process up to 500 tons per
day of waste.
Thermal
processes: Thermal treatment involves conversion of waste into gaseous, solids and
liquid conversion products with subsequent release of heat energy.
Three
types of systems are as follows:
i)
Combustion systems: Thermal processing with excess amounts of air.
ii)
Pyrolysis systems: Thermal processing in complete absences of oxygen.
iii)
Gasification systems: Thermal processing with less amounts of air.
0 comments