How do you treat hazardous waste physical chemical and biological treatment?
How do you treat hazardous waste physical chemical and biological treatment?
Hazardous waste can be treated by chemical, thermal, biological, and physical methods. Chemical methods include ion exchange, precipitation, oxidation and reduction, and neutralization. Among thermal methods is high-temperature incineration, which not only can detoxify certain organic wastes but also can destroy them.
What is treatment of hazardous waste?
Treatment is defined as any method, technique, or process designed to change the physical, chemical, or biological character or composition of any hazardous waste so as to neutralize such waste, or so as to recover energy or material resources from the waste, or so as to render such waste nonhazardous, or less …
What is biological hazardous waste?
1. Summary. Biological hazards are organic substances that pose a threat to the health of humans and other living organisms. Biological hazards include pathogenic micro-organisms, viruses, toxins (from biological sources), spores, fungi and bio-active substances.
What is biological waste treatment?
Biological wastewater treatment harnesses the action of bacteria and other microorganisms to clean water. Wastewater typically contains a buffet of organic matter, such as garbage, wastes, and partially digested foods. It also may contain pathogenic organisms, heavy metals, and toxins.
How is chemical waste disposed?
Chemical waste is regulated by the Environmental Protection Agency (EPA) through the Resource Conservation and Recovery Act (RCRA). It cannot be disposed of in regular trash or in the sewer system. Most chemical wastes must be disposed of through the EHS Hazardous Waste Program.
How do we manage biological waste?
Biological liquid waste can be poured down the drain (sanitary sewer), under running water after it has been decontaminated by autoclave or chemical means. Human or animal blood and body fluids do not need to be disinfected before being poured down the drain.
How is biological hazardous waste disposed?
Liquid biological waste should be collected in containers for autoclaving or chemical disinfection. Autoclaved or chemically disinfected liquid wastes can be disposed via the laboratory sink. Allow it to cool and solidify, then dispose of it as solid waste in biohazardous waste bags.
What is chemical wastewater treatment?
Chemical Wastewater Treatment. Chemical treatment of wastewater uses chemical reactants to break down pollutants. It is ideal for wastewaters with high chemical toxin contents, such as the wastewaters from chemical or pharmaceutical manufacturing, pump and paper mills, laboratories and textile manufacturers.
What is the biological treatment of hazardous waste?
Historically, biological treatment processes have been widely used for treatment of organic waste (e.g., municipal wastewater), but nowadays, they are being used more and more frequently as well for treatment of hazardous waste, particularly that at low hazardous concentrations.
What is the importance of separating hazardous materials from their waste?
These processes are very useful for separating hazardous materials from an otherwise non-hazardous waste stream so that they may be treated in a more concentrated form, separating various hazardous components for different treatment processes, and preparing a waste stream for ultimate destruction in a biological or thermal treatment process.
How to neutralize hazardous waste?
Acidic solutions are generally neutralized through the addition of slaked lime. Alkaline ones are mixed with sulfuric acid or bubbled through carbon dioxide. Most chemical waste treatment processes will require neutralization of hazardous waste before treating it.
What are physical treatment techniques for waste management?
Physical treatment techniques are often used to separate the materials within the waste stream so that they can be reused or detoxified by chemical or biological treatment or destroyed by high-temperature incineration.
