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Waste is any substance discarded after primary use, or is worthless, defective and of no use. A by-product, by contrast is a joint product of relatively minor economic value. A waste product may become a by-product, joint product or resource through an invention that raises a waste product's value above zero.
Waste comes in many different forms and may be categorized in a variety of ways. The types listed here are not necessarily exclusive and there may be considerable overlap so that one waste entity may fall into one to many types.
The composition of municipal solid waste varies greatly from municipality to municipality, [1] and it changes significantly with time. In municipalities which have a well-developed waste recycling system, the waste stream mainly consists of intractable wastes such as plastic film and non-recyclable packaging materials.
Human waste (or human excreta) refers to the waste products of the human digestive system, menses, and human metabolism including urine and feces.As part of a sanitation system that is in place, human waste is collected, transported, treated and disposed of or reused by one method or another, depending on the type of toilet being used, ability by the users to pay for services and other factors.
Waste generation = materials recycled + waste to landfill. waste hierarchy (waste management hierarchy)– a concept promoting waste avoidance ahead of recycling and disposal, often referred to in community education campaigns as 'reduce, reuse, recycle.' The waste hierarchy is recognised in the Environment Protection Act 1970, promoting ...
Landfills waste are categorized by either being hazardous, non-hazardous or inert waste. In order for a landfill design to be considered it must abide by the following requirements: final landforms profile, site capacity, settlement, waste density, materials requirements and drainage.
Green waste can be collected via municipal curbside collection schemes or through private waste management businesses. Many communities, especially in the United Kingdom, have initiated green waste recycling and collection programs in order to decrease the amount of biodegradable materials in landfills. [1]
WRATE Waste and Resources Assessment Tool for the Environment; WRG Waste Recycling Group; WRWA Western Riverside Waste Authority; WS2007 Waste Strategy for England 2007 (superseded by the Waste Management Plan for England (2013)) WSA Waste Strategy Area (e.g. 11 WSAs in Scotland) WtE Waste-to-Energy; WTF Waste Transfer Facility