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Sewage treatment is the treatment and disposal of human waste. Sewage is produced by all human communities. Treatment in urbanized areas is typically handled by centralized treatment systems.
There are a number of different waste treatment technologies for the disposal, recycling, storage, or energy recovery from different waste types. Each type has its ...
Waste management in these countries and cities is an ongoing challenge due to weak institutions, chronic under-resourcing, and rapid urbanization. [18] [page needed] All of these challenges, along with the lack of understanding of different factors that contribute to the hierarchy of waste management, affect the treatment of waste.
Mechanical biological treatment (sorting into selected fractions) Refuse-derived fuel; Mechanical heat treatment; Molten salt oxidation; Pyrolysis; UASB (applied to solid wastes) Waste autoclave; Specific to organic waste: Bioconversion of biomass to mixed alcohol fuels; In-vessel composting; Landfarming; Sewage treatment; Tunnel composting
Other technologies include composting and recycling. There are also a number of new and emerging waste treatment technologies which are able to treat a variety of waste streams. There is a move away from treating waste as a disposal problem towards recognising waste contains valuable resources that can be recovered.
The primary mechanism of biological waste recycling in the natural environment is performed by other organisms such as animals, insects, soil microorganisms, plants, and fungi, which consume all available nutrients in the waste, leaving behind fully decomposed solids that become part of topsoil, and pure drinking water that has been stripped of everything that can possibly be consumed and ...
A mechanical biological treatment (MBT) system is a type of waste processing facility that combines a sorting facility with a form of biological treatment such as composting or anaerobic digestion. MBT plants are designed to process mixed household waste as well as commercial and industrial wastes .
Waste management laws govern the transport, treatment, storage, and disposal of all manner of waste, including municipal solid waste, hazardous waste, and nuclear waste, among many other types. Waste laws are generally designed to minimize or eliminate the uncontrolled dispersal of waste materials into the environment in a manner that may cause ...