Recycling of organic waste

Recycling organic waste

1. WELCOME

2. ORGANIC WASTE AND IT’S RECYCLING
SUBMITTED BY:
Mr.SHIVAJI RAVASAHEB SURYAVANSHI
M.Sc. (AGRONOMY),
RCSM COLLEGE OF AGRICULTURE, KOLHAPUR
MAHATMA PHULE KRISHI VIDYAPEETH, RAHURI .

3. Introduction :
Organic waste is produced wherever there is human habitation.
The main forms of organicwaste are household food waste,
agricultural waste, human and animal waste.
Inindustrialised countries the amount of organic waste produced
is increasing every year.

4. The organic waste component of landfill is broken down by micro-organisms to form a
liquid ‘leachate’ which contains bacteria, rotting matter and maybe chemical contaminants
from the landfill.
This leachate can present a serious hazard if it reaches a watercourse or enters the water
table.
Digesting organic matter in landfills also generates methane, which is
a harmful greenhouse gas, in large quantity.
Little effort is made to reclaim the valuable nutrient or energy content of this waste.

5. Types of organic waste :
1)Domestic or household waste
2)Commercially produced organic waste
3)Animal and human waste
4)Agricultural residue

6. 1)Domestic or household waste
•Thistypeofwasteisusuallymadeupoffoodscraps,eithercooked
oruncooked,andgardenwastesuchasgrasscuttingsortrimmings
frombushesandhedges.
•Domestickitchenwasteisoftenmixedwithnon-organicmaterials
suchasplasticpackaging,whichcannotbecomposted.
•Domesticorhouseholdwasteisusuallyproducedinrelativelysmall
quantities.
•Indevelopingcountries,thereisamuchhigherorganiccontentin
domesticwaste

7. 2) Commercially produced organic waste
This type of waste generated at institutional buildings, such as
schools, hotels andrestaurants.
The quantities of waste here are much higher.

8. 3) Animal and human waste
Rawsewagecontainsbacteriaandpathogensthatcauseseriousillness
anddisease.
Rawsewageshouldneverbeappliedtocropswhichareforconsumption
byhumansoranimals.
Human faecal residueis produced in large quantities in urban areas and it
is recycled by a variety of ways.
Animal residueis commonly used as a sourceof fertiliser.

9. 4) Agricultural residue
This is the ‘waste’ which remains after the processing of crops (e.g.
maize stalks, rice husks,foliage, etc.).
There are a wide variety of applications for this residue, ranging from
simple combustion on an open fire to complex energy production
processes that use this waste as afuel stock.
It is not within the scope of this paper to deal with the many and
varied uses of agricultural residues.

11. Recycling of organic waste :
Fig. Processes and products from organic waste

13. Composting :
Composting is simply the method of breaking down organic materials in a large container or
heap.
The decomposition occurs because of the action of naturally occurring micro-organisms such
as bacteria and fungi.
Small invertebrates, such as earthworms andmillipedes, help to complete the process.
Composting can convert organic waste into rich,dark coloured compost, or humus, in a
matter of a few weeks or months.
Undercontrolled conditions, however, the process can be speeded up.

14. Thank you…