Several methods are used for emission quality monitoring:
1. Continuous Emission Monitoring Systems (CEMS): Provide real-time data for pollutants like SO₂, NOx, and CO.
2. Manual Stack Testing: Periodic sampling using probes and laboratory analysis.
3. Portable Emission Analyzers: Handheld devices for on-site testing.
4. Optical Remote Sensing: Measures emissions using light-based technology.
The choice of method depends on regulatory requirements, cost, and operational needs.
Advantages
– CEMS: Real-time monitoring for immediate action.
– Manual testing: Accurate for detailed chemical analysis.
– Portable devices: Quick and flexible.
Disadvantages
– CEMS: High installation and operational costs.
– Manual testing: Time-consuming.
– Portable analyzers: Less accurate over long-term monitoring.
Uses in Environment & Daily Life
– Continuous monitoring for large industries.
– On-the-spot testing during audits.
– Research studies on industrial pollution.