Chonnam National University's Policy on Hazardous Waste Disposal

Chonnam National University has established detailed guidelines to safely and efficiently manage designated hazardous waste generated in laboratories and medical facilities. These guidelines clearly outline the procedures for handling, transporting, and disposing of hazardous waste to minimize environmental pollution, reduce risks to human health, and prevent potential accidents.

In particular, to further enhance safety and compliance, Chonnam National University introduced updated safety management guidelines in December 2023, ensuring that all processes are rigorously followed.

1. Definition and Classification of Hazardous Waste

Designated hazardous waste at Chonnam National University includes substances that can pollute the environment or pose risks to human health. This includes:

• Acidic Waste: Waste with a pH level of 2.0 or lower (e.g., sulfuric acid, hydrochloric acid).
• Alkaline Waste: Waste with a pH level of 12.5 or higher (e.g., sodium hydroxide, potassium hydroxide).
• Halogenated Organic Solvents: Organic solvents containing halogens (e.g., dichloromethane, trichloroethylene).
• Other Organic Solvents: Non-halogenated organic solvents (e.g., acetone, ethanol).
• Toxic Waste: Toxic substances as defined by the Chemical Control Act (e.g., phenol, xylene).
• Waste Oil: Oil-containing waste with at least 5% oil content (e.g., vacuum oil, machine oil).
• Medical Waste: Waste from healthcare and research institutions that may pose infection risks (e.g., human tissue, blood, animal carcasses).

2. Waste Collection and Disposal Processes

2.1 Waste Segregation and Collection

• Chemical Waste: Laboratories must classify waste based on its chemical properties, including corrosiveness, toxicity, and flammability. Each type of waste must be collected in dedicated containers to avoid reactions between incompatible substances.
• Medical Waste: Generated from medical or research facilities, medical waste must be handled with special care, including separate collection for infectious materials, sharp x-x-objects, and biological waste.

2.2 Storage and Transportation

• Storage: Waste containers must be securely sealed and stored in well-ventilated areas to prevent leaks and reactions. Each container is labeled with the type of waste, the date of collection, and the individual responsible for disposal.
• Transportation: Waste is transported according to a schedule and handled by trained personnel equipped with protective gear. The transportation process follows strict safety protocols to prevent spills or accidents.

2.3 Prohibited Actions

• Mixing Waste: Hazardous chemical reactions can occur if incompatible wastes are mixed. Therefore, substances such as acids and bases or organic and inorganic chemicals must never be combined in the same container.
• Improper Disposal: Solid materials such as gloves, tissues, or unused chemicals must not be disposed of in liquid waste containers. These materials must be handled by specialized waste management companies.

3. Specific Guidelines for High-Risk Materials

3.1 Explosive Substances

• Handling and Storage: Explosive substances, such as potassium chlorate or certain nitro compounds, must be stored in specialized containers and handled with extreme caution to prevent accidental detonation.

3.2 Peroxide-Forming Chemicals

• Safety Measures: Chemicals prone to forming peroxides, such as diethyl ether, must be regularly checked for peroxide formation and safely disposed of within specified time frames to prevent dangerous reactions.

3.3 Flammable Substances

• Storage Protocols: Flammable substances that react with air or water, such as sodium or potassium metals, must be stored in oil and kept in sealed containers to prevent ignition.

4. Disposal of Special Waste Types

4.1 Medical Waste

Medical waste must be disposed of according to stringent guidelines to prevent contamination or infection. This includes waste from medical institutions, veterinary clinics, and laboratories that handle biological materials.

4.2 Chemical Waste Disposal

Chemical waste is treated in collaboration with certified waste processing companies, ensuring that hazardous substances are neutralized or safely contained to prevent environmental harm.

Conclusion

Through these comprehensive guidelines, Chonnam National University ensures the safe handling, storage, and disposal of hazardous waste generated from its academic and research activities. By following strict protocols, the university minimizes the risks associated with hazardous materials and actively contributes to environmental protection and campus safety.

 

※ Evidence:
- Chonnam National University Laboratory Safety Management Guidelines
- Chonnam National University Guidelines for the Safe Management of Laboratory Wastewater and Designated Wastes