Prayak and Pragna were IIT pass-outs and were planning to have a start-up which addresses the waste management issues. They spent couple of months visiting various organisations and government agencies, as part of their

CS Professional · Environmental, Social and Governance (ESG) Principles and Practice · PYQS · June 2025
Prayak and Pragna were IIT pass-outs and were planning to have a start-up which addresses the waste management issues. They spent couple of months visiting various organisations and government agencies, as part of their research. They made a pitch to one of the investors about their project and explained to them that waste management refers to various schemes to manage and dispose of wastes. It can be by discarding, destroying, processing, recycling, reusing, or controlling wastes. The prime objective of waste management is to reduce the number of unusable materials and to avert potential health and environmental hazards. The investor asked them what are the various sources of wastes which they have identified and plan to address through their start-up. In this context, briefly explain the various sources of waste generation.

Answer & Explanation:

Various sources of waste generation are: Domestic Waste: The waste materials produced from our households in our daily activities are called domestic waste. These include: (a) Kitchen waste like vegetables, fruits, and other food waste. (b) Sewage-human excreta and waste from bathrooms and kitchens. (c) Garbage-newspapers, rags, hair, house dust. (d) Others-plastic bags, bottles, tins, etc. Industrial Wastes: All Industries generate waste materials. The wastes typically comprise of ashes, rubbish, building material wastes, toxic wastes, metal containers, plastic containers, paints, oils, and other complex synthetic materials. (a) Mining operations leave tailings (rocks of little or no value) as waste. (b) Metallurgical industries release waste like slag and scrap metal. (c) Paper and pulp mills release effluents containing wood chips, bits of bark, cellulose fibres, and a number of chemicals. (d) Oil refineries and petrochemical units release a mixture of wastes containing hydrocarbons, organic acids, and Sulphur compounds. (e) Food processing units such as dairy, breweries, and meatpacking units release organic wastes. Agricultural Wastes: Modern methods employed in agriculture and the use of a variety of chemicals have contributed to the production of large quantities of agricultural waste. Agricultural wastes include crop residues like husk and straws, farm animal waste, and chemicals like pesticides, rodenticides, fungicides, herbicides, and fertilizers. These wastes can enter the water table as runoff from agricultural fields. Chemicals used in agriculture are toxic in nature. Commercial Wastes: Substantial waste is generated from commercial establishments such as restaurants, hotels, markets, offices, printing shops, auto repair shops, medical institutions, and hospitals.

Topics: Waste Management

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