Hazardous Waste & Oil Waste

What is Hazardous Waste & Oil Waste?

Hazardous waste refers to the waste that can pose a threat to human health or the environment, as it may contain toxic, corrosive, flammable, reactive, or infectious substances. This waste must be processed (preferably recycled) before being disposed of in the environment.

Oil waste is a special category of waste that includes used lubricating oils, waste fuel oils, oil sludge, and oil-contaminated materials. This waste is generally generated from heavy machinery and vehicles, and is typically contaminated with heavy metals, combustion by-products, and toxic hydrocarbons.

Sources of Hazardous Waste

Industrial Sources

Chemical manufacturing industries
Petrochemical industries
Pharmaceutical manufacturing units
Paint and dye industries
Pesticide and fertilizer industries
Textile processing and dyeing units
Leather tanneries
Metal plating and electroplating units
Battery manufacturing units
Cement and asbestos industries

Healthcare and Laboratory Sources

Hospitals and clinics
Pathology laboratories
Research laboratories
Diagnostic centers
Pharmaceutical testing labs

Agricultural Sources

Pesticide application residues
Herbicide and fungicide containers
Fertilizer production waste
Veterinary chemical waste

Commercial and Institutional Sources

Dry-cleaning units
Automobile service stations
Printing presses
Educational institutions (laboratories)
Photographic processing units

Mining and Metallurgical Sources

Mining operations
Ore processing plants
Smelting units
Refining operations

Sources of Oil Waste

Petroleum Industry

Oil refineries
Crude oil storage terminals
Pipeline operations
Oil exploration and drilling sites

Automotive Sector

Vehicle servicing stations
Garages and workshops
Transport fleets
Lubricant change facilities

Industrial Machinery and Manufacturing

Heavy machinery operations
Power generation plants
Steel and metal industries
Hydraulic system maintenance

Marine and Shipping Sector

Ship maintenance yards
Ports and harbors
Offshore drilling platforms
Bilge water discharge

Power and Energy Sector

Thermal power plants
Diesel generator installations
Transformer oil handling units

Types of Hazardous Waste

Ignitable (Flammable) Waste

This type of waste consists of the material that can be easily ignited under normal environmental conditions. These materials are highly combustible and generally have a low combustible point (below 60°C). Examples of ignitable waste include solvents (benzene, toluene), waste alcohols, paint thinners, used fuels, and certain industrial cleaning fluids.

Corrosive Waste

The corrosive waste generally includes material that can corrode metals or destroy living tissues. Sulfuric acid from battery waste, hydrochloric acid, sodium hydroxide solutions, and acidic cleaning agents are some of the examples of corrosive waste. These materials are typically strong acids (pH ≤ 2), strong bases (pH ≥ 12.5), or substances that release hydrogen gas after reacting with metals.

Reactive Waste

Reactive waste refers to the type of waste that is unstable and reacts violently under certain conditions. It can react with water, release toxic air, or be unstable under heat or pressure. Some of the common reactive waste materials are cyanide-containing waste, sulfide-containing waste, certain laboratory chemicals, and old explosive materials.

Types of Oil Waste

Used Lubricating Oil

This includes oil that has been used in cars or other types of heavy machinery. This type of oil waste is generally contaminated with heavy metals, carbon particles, and oxidation products. Generally, lubricating oil waste originates from heavy vehicles, industrial machines, and generators.

Waste Fuel Oil

The waste fuel oil is the oil used for combustion and has been disposed of. It contains expired or contaminated petroleum products. These oils can be toxic to the environment and pose a fire hazard if dumped carelessly. Common sources of waste fuel oil include refineries, fuel storage tanks, and transport spills.

Sludge Oil

This type of waste consists of oil mixed with semi-solid or solid waste from oil refineries and storage tanks. This material is composed of oil residues, water, sediments, and heavy hydrocarbons. The sludge oil is difficult to dispose of compared to other types of waste and requires special processing methods before disposal.

Benefits

The benefits of proper disposal of oil and hazardous waste are explained below:
Proper processing and disposal of hazardous waste prevent their unwanted leakage into soil, air, and water systems.
As the amount of hazardous and oil waste in the ecology is reduced, public exposure to carcinogens, heavy metals, toxic fumes, and harmful hydrocarbons is prevented.
It prevents the leakage of harmful substances into groundwater used for drinking and other municipal water bodies.
The oil waste discarded after consumption can be reused after adequate processing. This practice prevents the extraction of oil from natural resources.
Certain hazardous waste can be processed to retrieve valuable material, which promotes circular economy practices.
Additionally, proper processing and disposal of hazardous waste ensures the safety of staff and prevents workplace hazards.

Problems Caused by Improper Disposal

The disadvantages of improper disposal of hazardous and oil waste are explained below:

Hazardous chemicals such as heavy metals (lead, mercury, cadmium), pesticides, and industrial solvents can leach into the soil and reduce its fertility.
The seepage of hazardous and oil waste into the groundwater, which pollutes the drinking water sources.
Human exposure to oil and hazardous waste can lead to respiratory diseases, skin disorders, organ damage, neurological problems, reproductive issues, and cancer, which can result from chronic exposure.
Open burning of oil and hazardous waste leads to the release of toxic chemicals and greenhouse gases into the air.
Hazardous and oil waste can be highly flammable and pose fire risks at sites where this waste is dumped.
These types of waste materials can end up in the food chain, as animals and other organisms can accidentally consume them.
The cleanup, processing, remediation, and healthcare to mitigate the effects of oil and hazardous waste put economic strain on administrative, municipal, and healthcare systems.

Indian Regulations

Environment (Protection) Act, 1986

The Environmental Protection Act is an umbrella act that encompasses the rules and regulations regarding all kinds of environmental concerns. It empowers the central government to frame laws, ensure compliance, and determine penalties for non-compliance. This act is applicable to all hazardous and oil-based wastes.

Hazardous and Other Wastes (Management and Transboundary Movement) Rules, 2016

This act ensures proper handling and management of hazardous waste and also governs the import/export (transboundary movement) of such materials. According to this act, the industries generating any hazardous waste must register with the State Pollution Control Board. Post-resignation, such industries must follow the regulations for the processing and disposal of hazardous and oil-based waste.

Water (Prevention and Control of Pollution) Act, 1974

This act outlines the regulations governing the discharge of hazardous and oil waste into municipal water bodies. In accordance with this act, industries are required to obtain Consent to Establish (CTE) and Consent to Operate (CTO). Additionally, industries must treat oil-contaminated wastewater before discharging it into water bodies.

National Green Tribunal Act, 2010

This act directs the government to establish a national green tribunal. This tribunal handles cases regarding improper disposal of hazardous waste. This tribunal can also seek prompt justice for environmental non-compliance and enforce penalties in such cases.

Air (Prevention and Control of Pollution) Act, 1981

This act was introduced to prevent and control the burning of hazardous waste, which can lead to air pollution. According to this act, burning of hazardous waste or oil waste, without authorization, is illegal. It also outlines standards for incineration procedures.

Petroleum Act, 1934

The Petroleum Act regulates the import, transport, storage, and production of petroleum. It enforces the requirement of a license for the storage and handling of petroleum products. This act also outlines rules and regulations for the handling of flammable oil waste.