Bhopal Gas Tragedy: Complete Incineration of Union Carbide Waste Marks Environmental Milestone

The entire 337 tons of waste from the closed Union Carbide factory in Bhopal has been incinerated at a disposal facility in Pithampur, Madhya Pradesh. This process concluded six months after the toxic materials were transported to the site. Initially, 30 tons were burned during three trials, while the remaining 307 tons were incinerated between May 5 and June 29-30.

The disposal operation followed directives from the Madhya Pradesh High Court. Local residents initially protested due to concerns about environmental and health impacts. The waste was incinerated at a maximum rate of 270 kg per hour under expert supervision. Emissions were monitored in real-time and remained within standard limits.

Waste Disposal Process

The incineration process began on May 5 at 7:45 pm and concluded on June 29-30 at 1 am. The Central and State Pollution Control Boards oversaw the operation, ensuring compliance with safety standards. The emissions of various gases and particles were continuously monitored, confirming they stayed within acceptable levels.

During the burning of the waste, emissions such as particulate matter, sulphur dioxide, carbon monoxide, hydrogen sulphide, hydrogen fluoride, oxides of nitrogen, mercury, cadmium, and other heavy metals were found to be within prescribed limits. The air quality in nearby villages like Tarapura, Chirakhan, and Bajrangpura also remained within safe standards.

Residue Management

Post-incineration, the ash and residue are securely packed in sacks and stored in a leak-proof shed at the plant. Special landfill cells are being constructed for burying this residue safely by November. Before burial, the residue will undergo scientific treatment to prevent environmental harm.

Additionally, about 19 tons of excess waste found in the soil at the Union Carbide site is being incinerated at Pithampur. This process is expected to finish by July 3. Furthermore, 2.22 tons of packaging material waste will be treated and buried scientifically.

Background and Safety Measures

The Union Carbide factory was the site of a major industrial disaster when methyl isocyanate gas leaked on December 2-3, 1984. This incident resulted in over 5,479 deaths and thousands more injured. The current waste disposal efforts aim to close this tragic chapter safely.

The waste included soil from the factory premises, reactor residue, Sevin pesticide residue, naphthal residue, and semi-processed materials. Scientific analysis indicates that Sevin and naphthal chemicals have become negligible in effect. No methyl isocyanate gas or radioactive particles were present in the waste.

The waste was transported from Bhopal to Pithampur on January 2. Initial trials burned 30 tons at varying rates of 135 kg per hour, 180 kg per hour, and 270 kg per hour. These trials confirmed that emissions stayed within safe limits.

The State Pollution Control Board stated that if all goes as planned, the residue will be disposed of by December after thorough scientific treatment to ensure no environmental damage occurs.

With inputs from PTI