1. Environmental Technology ChimH409 (2-0-1) Michel Verbanck mikeverb@ulb.ac.be 2012 Universite Libre de Bruxelles Welcome @ Bruface Dept Water Pollution Control

2. Course structure Part 1. Introduction (incl. generic methods) Part 2. Air pollution control engineering Part 3. Water & wastewater treatment Part 4. Solid and hazardous wastes

4. Part 2. Air pollution control engineering Gaseous Particulates

7. Henry's Law states that the amount of a gas that dissolves into a liquid is proportional to the partial pressure that gas exerts on the surface of the liquid. where, C A = concentration of A, [mol/L] K H =equilibrium constant (Henry's Law constant), [mol/L-atm] p A =partial pressure of A, [atm]

9. Packed Bed Scrubber

11. Impingement separators (impactors)

15. LbLb LcLc

22. Electrostatic Precipitator (ESP)

24. Design of Electrostatic Precipitators The efficiency of removal of particles by an Electrostatic Precipitator is given by η = fractional collection efficiency w = electrokinetic velocity (drift velocity), m/s. A = available collection area, m 2 Q = volumetric flow rate m 3 /s

26. In practice, on a real industrial site: What are the characteristic removal efficiencies for each implemented step ? [refer also to the technical visit at Brussels-Energy incineration plant]

27. ..................poor !..................excellent