Waste minimization means the reduction, to the extent feasible (technology and economic feasible), of hazardous waste that is generated prior to treatment, storage, or disposal of the waste. Somewhat synonymous terms for waste minimization are waste reduction, clean technologies, pollution prevention, environmental technologies, low and non-waste technologies. Waste minimization techniques focus on source reduction or recycling activities that reduce either the volume or the toxicity of hazardous waste generated. Source reduction consists of product changes and source control. Source control includes input material changes, technology changes, and good operating practices. Recycling (on site and off site) covers use and reuse and reclamation. Waste minimization procedure consists of five phases：planning and organization assessment preparation step, assessment step, feasibility analysis step, and implementation.