Which is the least preferred strategy of Integrated Solid waste Management according to their Environmental benefits?

Concepts:

Recycling is the most preferred method among the given options but if waste cannot be recycled, incineration then sanitary landfilling is the next preferred methods of treatment.

Land filling is the most prevalent because it is the cheapest method of disposal but it is the least preferred method keeping in view of Environmental benefits as it produces the leachets and leads to contamination of ground water.

Methods for solid waste disposal are:

1. Landfills:  In this, Garbage is basically spread out in thin layers, compressed and covered with soil or plastic foam.  It is used in urban areas where large amount of waste is generated. 

2. Incineration:  This method involves the burning of solid wastes at high temperatures until the wastes are turned into ashes.   It is used when calorific value of refuse is very high i.e. volume of refuse is reduced significantly.  

3. Composting is a biological method for decomposition of the organic wastes. It can be done either in presence of oxygen or in absence of oxygen. End products formed in this process are called humus or Composed manure. There are mainly two methods (Indore and Bangalore method) adopted in India for decomposition of solid wastes by compositing.

4. Shredding: It is the process of size reduction of waste material.