WasTe

What is waste?
Waste is an unwanted substance. It is known as rubbish,trash,garbage or junk depending on the type of material. Living things dispose of waste or toxins from their bodies. There are many waste types which include municipal solid waste, commercial waste and hazardous waste. Waste can be divided into its physical, chemical and biological characteristics.
Solid wastes are waste materials that contain less than 70% of water. They are household garbage,some industrial waste, some mining wastes, and oilfield wastes such as drill cuttings.
Liquid wastes are usually wastewater that contain less than 1% solids. Such waste may contain a lot of dissolved salts and metals.
Sludge is between liquid and solid. Such wastes may contain high concentrations of dissolved salts and metals. Sludge is a class of waste between liquid and solid. They usually contain between 3% and 25% solids, while the rest of the material is water dissolved materials.
Some components of wastes have economical value and can be recycled once correctly recovered. Waste that some people discard may be useful to others. Waste materials are a valuable resource and people should take advantage of this.
Biodegradable waste such as food waste and sewage is broken down naturally by microorganisms. Uncontrolled disposal of biodegradable wastes can cause the release of green house gases that are bad for health as they can cause climate change.
Waste management
Waste management is the collection, transport, processing, recycling or disposal and monitoring of waste materials. It is done to reduce their effect on health and environment. Waste management can involve solid,liquid,gaseous or
radioactive substances with different methods for each.Waste management practices differ for developed and developing nations, for urban and rural areas and for residential and industrial producers. Management for non-hazardous residential and institutional waste in town areas is usually
the responsibility of local government authorities, while management for non-hazardous commercial and industrial waste is usually the responsibility of the generator .
Waste pollution - the impact on the environment.LitteringLittering is the most common visible form of solid waste pollution. The most common irresponsible practice is disposing of waste in public places. Despite signboards forbidding littering, the public still ignore them and continue littering.
Marine debris
Marine debris known as marine litter, is human-created waste that has been deliberately dumped or accidentally become afloat in a lake, sea, ocean or waterway. Four fifths of the ocean debris is seaward from landfills, and washed seaward by storm drains. Other forms of pollution include illegal dumping and leaching.