Discribe 3 method of solid waste

Methods of Solid Waste Disposal and Management: 1. Solid Waste Open Burning Solid waste open burning is not the perfect method in the present scenario. 2. Sea Dumping Process This sea dumping process can be carried out only in coastal cities. This is very costly procedure and not environment friendly. 3. Solid wastes sanitary landfills Solid wastes sanitary landfills process is simple, clean and effective. In this procedure, layers are compressed with some mechanical equipment and covered with earth, leveled, and compacted. A deep trench of 3 to 5 m is excavated and micro-organisms act on the organic matter and degrade them. In this procedure, refuse depth is generally limited to 2m. Facultative bacteria hydrolyze complex organic matter into simpler water soluble organics 4. Incineration method Incineration method is suitable for combustible refuse. High operation costs and construction are involved in this procedure. This method would be suited in crowded cities where sites for land filling are not available. It can be used to reduce the volume of solid wastes for land filling. 5. Composting process Composting process is similar to sanitary land-filling and it is popular in developing countries. Decomposable organic matter is separated and composted in this procedure. Yields are stable end products and good soil conditioners. They can be used as a base for fertilizers. Two methods have been used in this process: a)Open Window Composting b) Mechanical Composting