Pecma impingement scrubbers are available in different arrangements like spray tower. The air may be forced to impinge on a series of baffles. These are gain low energy category scrubbers and have relatively low degree of particulate removal. The efficiency will range from 90 to 95 % for 10 microns particulars. Water consumption will range from 35 to 70 liters of liquid for per1000 M3 of gas.