manipulation of raw material for production of quality compost
DESCRIPTION
Manipulation of Raw Materials for the Production of Quality CompostTRANSCRIPT
Powerpoint Templates Page 1
Group No. 7
Manipulation of Raw Materials for the
Production of Quality Compost
Powerpoint Templates Page 2
• Compost is organic matter that has been decomposed and recycled as a fertilizer and soil amendment.
What is compost?
Powerpoint Templates Page 3
• There are developed quality standards.– Government – Private composting association
• For a example Canada has developed 3 standards– A national Canadian standard for the composting
industry (BNQ);– Guidelines for compost (CCME); and– The adoption of new mandatory criteria for compost
(AAFC).
How to measure the quality?
Powerpoint Templates Page 4
Quality compost
Well maturity
No foreign matter
High amount of trace elements
No pathogenic organisms
No organic contaminants
Contain humic substances
Good physical characters
Good chemical characters
Powerpoint Templates Page 5
• Technically, compost may be made from any organic material.– Green Manures- legumes– Animal Manures– Kitchen waste– Garden residues– farm residues-hay ,straw – Paper & cardboard– MSW
Raw Material
Powerpoint Templates Page 6
Manipulate,
Material size and shape
Contamination of toxic
Proportions of row material
How To Manipulate?
Powerpoint Templates Page 7
• Effect to – Composting speed– Physical property of the pile( Porosity, structure)– Handling
Material size & size
Powerpoint Templates Page 8
• The best sized is less than 2 inches in the largest dimension.
Shredding or grinding raw materials
Powerpoint Templates Page 9
• Farm waste heavy mettle, herbicide• News paper Pb• Animal manure pathogens, anti biotic
Contamination of toxic
House Trash
MSW compost
Bio Compost 14
Green CompostGarden Compost
How waste handling affects compost quality:
Dioxin concentration (ng/kg) in waste and composts.
Source: Kraus & Grammel 1992
Powerpoint Templates Page 11
• Different raw matter effect differently.
Saw dust Carbon /Humic substances.
Chicken manure Nitrogen
Dry leaf litter Reduce moisture content
Simple sugar Initial microbial population
Proportions of raw materials
Powerpoint Templates Page 13
1. Compost quality standards & guidelines- project report by
William F. Brinton, Ph.D.(Project Manager)
2. http://whatcom.wsu.edu/ag/compost/fundamentals/needs_parti
cle_size.htm
3. Support Document for Compost Quality Criteria-National
Standard of Canada
4. http://cwmi.css.cornell.edu/composting.htm
References
Powerpoint Templates Page 14
• 08/AG/009-- S.J. Karunanayake• 08/AG/026-- W. M. B. P. B.
Weerasinghe• 08/AG/39-- P.G.S.P Chandrasiri• 08/AG/057-- K. A. N. Y. Kodisinghe• 08/AG/068-- H.A.D.G. Perera• 08/AG/079-- W.A.S.D.
Wickramasinghe• 08/AG/089-- R. Cyril
Group members
Powerpoint Templates Page 15