How to dispose of fireworks residue?

Prioritize safety: fully soak and cool waste before sorting. Residual propellant or contaminated casings must not be discarded directly as dry debris can smolder and cause bin fires. Illegal disposal leading to fires results in compensation and detention penalties.

Fireworks casings continue to smolder for 3-5 minutes after use; though invisible, internal heat can ignite paper/plastic. In Zhejiang, a citizen who discarded uncooled waste caused a fire, resulting in 11 days detention and over 20,000 RMB in fines/compensation. Correct cooling: Submerge all waste in water for at least 15 minutes to neutralize residual propellant. Do not step on casings as it increases ignition risk. Disposal methods: 1. Used casings/debris/sparklers: Soak in water for 15+ minutes, drain, seal in double plastic bags, and dispose in general waste (gray bin). Sparkler rods are also non-recyclable due to contamination. 2. Unlit outer cardboard boxes without fire residue: Flatten and recycle in blue bins. 3. Duds with residual propellant: Do not inspect or relight. Soak in water for 15+ minutes, seal separately, and dispose as general waste. For large quantities of duds, contact community/police/fire departments for professional disposal. Source: Zhejiang Daily.