solid waste

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SOLID WASTE Presented By: E.Ramsai KL University

Sources of solid wastes::

Sources of solid wastes: Domestic waste Garbage waste Hospital waste Industrial waste Street waste

Types of waste materials::

Types of waste materials: Municipal solid waste: household, construction wastes. Hazardous waste: paints, tins, old batteries and old medicines. Infectious waste: research activities and chemical wastes.

Methods of management :

Methods of management Un controlled dumping Source reduction Sanitary landfill Recycling Composting Grinding Open dumps Incineration Salvaging

Open dumps :

Open dumps Referred to uncovered areas that are used to dump all types of solid wastes This waste in untreated, uncovered and not segregated will be Breeding ground for flies, rats and other insects that spread diseases.




RECYCLING Means separating, collecting, processing, marketing and ultimately using a material that would have been thrown away. Recycling is a key component of modern waste management. Recycling materials include many kinds of glass, paper, metal, plastic, textile and electronics.

Why should we recycle?:

Why should we recycle? 1. Recycling reduces our reliance on land fills and incinerators. 2. Recycling protects our health and environment. 3. Recycling conserves our natural resources because it reduces the need for raw materials.


LANDFILLS: Landfills are generally located in urban areas where large amount of waste is generated and has to be dumped in a common place.


SANITARY LANDFILLS Methodical manner. Alternate layers of plastic and clay is covered with impermeable soils Considered when completely degraded biologically, chemically and physically. It is a bit costlier used more in Urban countries.


COMPOSTING One of the oldest forms of disposal. Natural process of decomposition of organic wastes that yields manure or compost which is rich in nutrients Biological process which micro organisms like bacteria and fungi convert degradable organic wastes into humus like substance

Benefits of composting: :

Benefits of composting: It supplies part of the 16 essential elements needed by the plants. It helps reduce the adverse effect of excessive alkalinity, acidity, or the excessive use of chemical fertilizer. It makes soil easier to cultivate. It helps keep the soil cool in summer and warm in winter. It aids in preventing soil erosion by keeping the soil covered. It helps in controlling the growth of weeds in the garden .


INCINERATION: Process of burning waste in large furnaces In these plants the recyclable material is segregated and rest of the material is burnt

Requirements for better solid waste management :

Requirements for better solid waste management Proper access road to the disposal site. Equipment like loader and movers. Additional man power for disposal and Working tools and equipment for the new manpower.

Slide 15:

RE-USE : Great for plastics. Instead of throwing away your plastics bag or bottle, have you tried reusing it? If not as a bottle, try making a flowerpot out of it or pencil stand. REDUCE: Reduce the generation of unnecessary waste , eg: carry your own shopping bag when you go to the market and put all your purchases directly in to it.

Slide 16:

Recycle: Use shopping bags made of cloth or jute, which can be used over again . Refuse: Instead buying new containers from the market, use the once that are in the house. Refuse to buy new items though you may think they are prettier than the one you already have.

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Save the environment

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