Waste Management and Pollution

Biomedical wastes, industrial wastes, domestic wastes etc., are burnt in and incinerator at high temperature. Incineration is an industrial combustion process designed to reduce unwanted material to simple solid and gaseous residues.

Pyrolysis is a thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen, which produces energy-rich gases and oils. Other methods listed are primarily for containment or treatment rather than energy recovery.

Biomedical waste includes infectious waste, which is waste that is contaminated by body fluids or radioactive chemicals such as chemotherapy drugs. The waste may include needles, disposable tools and other materials. Improper management of biomedical waste can result in contamination of air, soil and water with pathogens and toxic chemicals which may affect all forms of life. Inadequate waste management may lead to transmission of diseases like typhoid, cholera, etc. Infectious agents such as faeces, vomit, saliva, secretions, blood can cause serious health risks on individuals by affecting organs or systems like gastrointestinal, respiratory, eye, skin and cause Anthrax, Meningitis, AIDS, Haemorrhagic Fever, Hepatitis A, B, C, Influenza etc.

Municipal waste is defined as waste collected from residential, commercial, and institutional sources within a municipality. It is distinct from industrial or hazardous waste streams.

Solid waste management is primarily an urban problem because of the high concentration of people and consumption in cities, which creates significant logistical and environmental challenges for local governments.

Disposal into the sea involves depositing waste into deep ocean waters from coastal areas. Composting is biological decomposition, pulverization reduces particle size, and incineration burns waste at high temperatures.

Pulverization is a mechanical process that grinds or shreds waste, significantly reducing its volume and altering its physical characteristics to make it easier to handle or compact.

Lighter components of solid waste, such as plastics and certain organic materials, have a lower density than seawater and will therefore float on the surface.

Total solids in a water or waste sample are defined as the sum of total dissolved solids and total suspended solids.

Solid waste classification is broad and includes various categories such as rubbish (non-putrescible), garbage (putrescible), and agricultural waste.

Biomedical waste may be infectious waste include discarded blood, sharps, unwanted microbiological cultures and stocks, body parts after amputation. The wastes may also include bandages and dressings, discarded gloves, other medical supplies that may have been in contact with blood and body fluids, and laboratory waste. This waste is highly infectious. The method used for the disposal of biomedical waste is incineration. Incinerators are operated at very high temperatures. This temperature kills and destroys the microorganisms and pathogens. Autoclaving is done for reusable products like gloves. 

The waste that is generated from hospitals and clinics is classified as biomedical waste. The waste includes bandages, syringes, gloves, waste cotton, saline etc. in this category.

The time taken for some solid waste to decompose is very long, 100-400 years for old cloths, wool etc. 

Definition of solid waste. There is an ever increasing  generation of solid waste by the society due to changing life styles. approach if convenience and use and throw habit.