Trash is a residue of a business or
activity [human] who are solid [in the form of organic and inorganic substances
that are biodegradable and non-biodegradable] and is not considered useful
anymore [so disposed to the environment]. Nature knows no trash, only recycled
materials and energy. Only people who litter [result in the garbage].
All sorts of organisms that exist
in nature always produces waste material, because there is no conversion
process has an efficiency of 100%. Most of the waste material produced by
organisms that exist in nature are organic [CHO ties, part of the living body].
Waste from human activities which can be organic or inorganic. Examples of
organic waste are: food scraps, paper, wood and bamboo. While inorganic waste
[the results of the process plant] for example: plastic, metal, glass, and
rubber.
Garbage is a consequence of the
presence of human activity. Every human activity must generate waste or
garbage. The amount of waste comparable to the level of human consumption of
goods / materials are used in everyday life. The population growth and
lifestyle are very influential on the volume of waste.
Characteristics of the waste in schools:
School
as a gathering place for many people to be the largest waste producer in addition
to the market, household, industrial and institutional. In general, waste can
be separated into:
- Organic waste / nonperishable comes from food scraps, vegetable scraps and fruit skins, fish and meat, garden waste (grass, leaves and twigs).
- Inorganic waste / nonperishable form: paper, wood, fabric, glass, metal, plastic, rubber and soil.
Waste
generated mostly school is kind of dry waste and wet waste only slightly. Dry
waste is produced mostly in the form of paper, plastic and a little metal.
While the wet garbage from a tree fallen leaves, food scraps and food wrapping
in banana leaves.
Trash does have a huge potential to
be used as electrical energy, because the production of waste each year has
increased. School is one of the public places in cities that generate waste and
require considerable power. In addition, the school is a place young people to
study, so that the knowledge which a student in the school can be directly
applied. In this case the waste is processed utilizing the knowledge gained.
Processing process can be done in a
way to accommodate the trash in a big hole closed (depends on the ability of
each school). Then, made a hole which is distributed by pipeline heat boiler to
the simple tool (a tool to steam heat exchanger). Then burned garbage in the
hole. Burned garbage will generate heat that will be absorbed by the heat
conduit.
After arriving at the boiler,
generating heat which is then converted into a vapor that can be used to drive
a generator producing electricity. Then, the electrical energy produced can be
used as a power source for lighting, school supplies such as computers, garden
lighting, lighting in the cafeteria, etc.. Thus, in particular electrical
problems at school can be a bit overcome. If electrical energy is generated,
then the electrical energy will be utilized out of school or be fully utilized
in the school. For example, as the street lighting in the vicinity of the
school.
It can provide many benefits, among
other issues in urban household garbage can be resolved, ease the distribution
of scattered garbage, lighten the burden of government on the issue of waste,
tackle pollution caused by waste, reducing the danger of mosquitoes, flies and
other diseases, and even more so in when the feast of the coming of the rainy
season streak plus, sehigga constraints as it is often the case in Bali can be
done well.
Production of electrical energy
independently conducted by skolah can reduce electricity production costs and
ease the burden of electricity costs the school. In addition, the presence of
such a breakthrough, with no deliberate will have a positive influence to
students.
Some positive effects are: students
will be skilled in applying science in enrollments and increase student
awareness of the good lingkungna management, learning creativity (utilizing
waste into marketable products), caring learning environment, students will
also be able to provide input to the neighborhood that has the problem of waste
management or electricity shortage issue to make use of waste in the vicinity,
as a source of electrical energy.
Of ideas and explanations above, it
can be concluded that the waste has a huge potential as a producer of
electrical energy, because the number is increasing every year. Management of
waste into electrical energy conducted in schools will provide
multi-positive-effects on the next generation (students).
