Wednesday, July 29, 2009

Waste into Compost

Composting is the purposeful biodegradation of organic matter, such as yard and food waste. The decomposition is performed by micro-organisms, mostly bacteria, but also yeasts and fungi.[1] In low temperature phases a number of macro-organisms, such as springtails, ants, nematodes, isopods and earthworms also contribute to the process, as well as soldier fly, fruit flies and fungus gnats. There are a wide range of organisms in the decomposer community.
A biodegradable material is capable of being completely broken down under the action of microorganisms into carbon dioxide, water and biomass. It may take a very long time for some material to biodegrade depending on its environment (e.g. wood in an arid area versus paper in water), but it ultimately breaks down completely. Many contaminating materials not dealt with in common composting are in fact "biodegradeable", and may be dealt with via bioremediation, or other special composting approaches.
A biodegradable material is capable of being completely broken down under the action of microorganisms into carbon dioxide, water and biomass. It may take a very long time for some material to biodegrade depending on its environment (e.g. wood in an arid area versus paper in water), but it ultimately breaks down completely. Many contaminating materials not dealt with in common composting are in fact "biodegradeable", and may be dealt with via bioremediation, or other special composting approaches
A biodegradable material is capable of being completely broken down under the action of microorganisms into carbon dioxide, water and biomass. It may take a very long time for some material to biodegrade depending on its environment (e.g. wood in an arid area versus paper in water), but it ultimately breaks down completely. Many contaminating materials not dealt with in common composting are in fact "biodegradeable", and may be dealt with via bioremediation, or other special composting approaches.
A biodegradable material is capable of being completely broken down under the action of microorganisms into carbon dioxide, water and biomass. It may take a very long time for some material to biodegrade depending on its environment (e.g. wood in an arid area versus paper in water), but it ultimately breaks down completely. Many contaminating materials not dealt with in common composting are in fact "biodegradeable", and may be dealt with via bioremediation, or other special composting approaches

Best five in Sabaragamuwa

There are 28 LGAs in Sabaragamuwa province under the two districts Kegalle and Rathnapura. Out of these LGAs only five LGAs have been managing solid waste which is generated in the area coming under their responsibility properly. They are Balangoda urban council, Rathnapura municipal council, Kuruwita pradeshiya saba in Rathnapura district and Kegalla urban council and Mawanella pradeshiya shaba in Kegalla district. Mawanella pradeshiya shaba has a unique system for composting Municipal Solid Waste (MSW).It is Called the Inclined Step Grate (ISG) composting unit. Other four places have been following open windrow system for conversion of bio degradable waste into Compost. Kuruvita pradeshiya shaba’s composting plant is the most especial because it is located inside the Kuruwita prison prisoners carry out the composting work.

Monday, May 11, 2009

Solid waste generation in Sri Lanka



Waste generation is often expressed in terms of a waste generation rate, this being the quantity of waste produced per person per day (kg/person.day). The waste generating rate is vary useful for planning and comparison purposes. For example, household waste generation increases with income. Low income: 0.37Kg/person.day, Middle income: 0.47Kg/person.day,High income: 0.67Kg/person.day and municipal waste generation is always greater than household waste generation.municipal waste generation is also closely related to the state of the town/city economy, increasing during time of rapid economic growth and decreasing during times of economic recession. Developing countries: o.3-1.0 Kg/person.day, Developed countries: 1.0-2.5 Kg/person.day.waste generation also affected by the floating population, this being the number of people who pass through a town/city during the day,season and festival and other especial occations.

පරිසර දුෂණය


Environmental pollution is a growing problem in Sri Lanka aggravated in the absence of proper management systems of waste and by the existence of a large number of industries that are located in every part of the country at various scales. However, rate of generation of waste is also increasing with the increase of population, technological development and the changes of life styles of the people. Mismanagement of waste and its improper disposal lead to health and environmental problems. Most obvious environmental problem that has more public concern is damages to aesthetic view. However more serious visible, invisible and some times irreversible environmental damages occur due to surface and ground water pollution by the leachate from uncontrolled open dumping of solid waste. Air pollution can also be caused from the inefficient burning of waste either in an open air or in plants with inadequate emission control systems.

Wednesday, May 6, 2009

Waste disposal


Direct dumping of MSW in open site is the most common practice in many developing countries including Sri Lanka. Disposal of MSW in Sri Lanka is primarily by open site dumping located at lowland areas where leads to surface and ground water pollution .source and separation is still not practiced for MSW thought it is an essential process to recycle and reuse possible materials for example collection of glassware in island wide is successful thus it reduces the manufacture of bottles by 60%. Common problem with open site dumping can be explained as odour emission to the atmosphere, ground water pollution by leachate transport, health and hygiene problem for living beings, pollution of aesthetic appearance, natural water bodies’ pollution, scavenger’s problems and fly and mosquito problems. But this requires large land area and has to handle massive quantities, further it creates many problems mentioned above and has to be stopped immediatel

Wednesday, April 29, 2009

Municipal solid waste


Municipal Solid Waste (MSW) is a major problem that affects environmental equality and the sustainable development cities and rural areas of Sri Lanka. Large amount of MSW is remain untreated and dumped on the open land due to lack of appropriate technological knowledge and financial resources to treat and dispose them. Therefore, a systematic waste management system is required. The waste management system should be handled in environmentally sound and economically viable manner. Human health and environmental quality gradually fall into more unsafe situation due to poor waste management.