Solid waste management using 4 r

Management of waste & processing of solid waste

1. METHODS OF SOLID WASTE MANAGEMENT -USING “4 R”

2. Prepaired By : Zesrin Rezoana Sylhet Agricultural University

3. What is Waste? Waste- is source in the wrong place at wrong time. Once it finds its rightful place, it will be just as valuable as any other resource Type of waste Solid Liquid

4. Sources of agricultural waste Animal Plant Field or Farm The main types of agricultural waste are biological Solid Hazardous Sources & Types of Agricultural Waste

5. Main type of waste Sources of Agricultural waste Main type of Agricultural waste

6. Solid Waste: In Simple Words  - Solid wastes are any discarded or abandoned materials. Solid wastes can be solid, liquid, semi-solid or containerized gaseous material . Examples of solid wastes include the following materials when discarded : scrap metal waste tires latex paints furniture and toys and plastic bottle garbage vehicles oil an anti-freez

7. Environment pollution by solid waste

8. Types of solid Waste Municipal Waste: Residential waste: Food waste,rubbish,ashes, special waste Commercial waste: Food waste,rubbish, decomposition &construction waste,occasionall hazardous waste Open areas: special waste,rubbish Treatment plant: Treatment plant waste,composed of residual sludge Industrial Waste: Chemical waste: Chemic Pesticides, fertilizers and other chemicals. agriculture, Heavy metal Mercury,anti-frezzer etc Solid waste: scrap paper,plastic materials,sanitary Toxic and hazzadious waste: Amonia,murcary, CFC Bio-medical waste: pathological waste, pharmaceutical waste, genotoxic waste, chemical waste, and radioactive waste etc.

9. Amount of solid waste genaration in sylhet city

10. Objective of managing of solid waste: Public hygine and health Reuse,recovery,recycle Sustainable development aethetics And covert waste into source of energy Going towards minimum wastage

11. Effects of waste if not managed wisely affects our health affects our socio economic conditions affects our coastal and marine environment Effects our claimate

12. Concept of waste management Established waste treatment technologies Composting Incineration Landfill Recycling Windrow composting

13. Alternative waste management treatment Anaerobic digestion Alcohol/ethanol production production of biomass to mixed alcohol fuels  (pilot scale ) Gasification Mechanical biological treatment Mechanical heat treatm Sewage treatment Tunnel composting

14. Concept of 4R: We apply 4r for waste management . reduce, reuse, recover, recycle to all our services. Wwe actively angage waste generators in managing their waste responsibly. R for reduce R for reuse R for recycle R for recover

15. Recycle: Means to use materials again in a new formation. Importance of recycle : Saves limited natural resources prevent greenhouse gas emissions and water pollutants. saves energy provides raw materials for industry creates jobs saves landfill space

16. Waste Recycling :

17. Reduction: Means to make something smaller . Waste reduction, the combination of waste prevention and recycling efforts . Importance of waste reduction. waste prevention benefits the environment makes good financial sense. benefits society,.

18. Reuse: Reuse means using reusable old things or product again. manufacturing new products drains our limited natural resources, disposing of unwanted materials from environment, One way to prevent waste , improve our communities, provide help to other people who are in need .  .  

19. Recovery: Resource recovery goes further than just the  management of waste . different treatment technologies In recovery broken materials are reused by fixing It is economical in the case of pursuing new things By recovering we can save of money,waste and environment

20. Concept of solid Waste Management Transfer station Transfer vechicle Collection vechicle On-site storage Refuce processing Recedure transport landfill

21. Managing solid waste collection In the end there must be disposal system of waste.If waste is thrown into the environment then invironmet pollution will be occurred.so Collection bean must have a large enough space area . Municipal authority should maintain the storage facilities to avoid unhygainic unstasionary condition It is advisable to move from open dumping to sanitary land filling in a phased manner. And we all should dump waste in a specific place. And we should not dump the waste material in a same bean .

22. For managing waste a waste management plant should be stabilished in the farm or industries. In the waste management plant : Biodegrable waste is converted into biogas and humas Non biodegrable waste is burned Waste which can not be burned is used in land fill. In allo management process th main moto is to reduce waste at any possible way.producing waste can not be stopped.But it can be reduced,recycle,reuse an lessened.

23. Thank you Thank you!!