| Parameters |
Wet Scrubber |
ESP |
Bag House |
Other APC MDC, Multi cyclone, Trema etc |
| SPM |
100pm |
100pm |
50 ppm |
Generally 800-1000 ppm |
| SOx |
100pm |
Not useful |
Not useful |
Not useful |
| Delta P |
50-60mmWC |
25-30mmWC |
100-150mmWC |
50-100mmWC |
| Installation / Space |
VerticalLow Ground space required |
Long Space Required- Bulky |
Space required Bulky |
VerticalLow Ground space required |
| Initial cost |
Medium |
Very High |
High |
Medium |
| Draft Loss |
Medium |
Low |
High |
Medium |
| Operation Cost |
Low- use of ETP Water |
High Electrical Cost |
High pressure loss call for Bigger ID power |
Very Low |
| Delivery |
Fast |
Long |
Long |
Fast |
| Material Of Construction |
SS316L Special Grade |
MS |
MS |
MS |
| Operation ease |
Attn required over water circulation. Easy to operate |
Trained engr required |
Attn required for operation |
No Attn required |
| Maintenance Cost |
Low – preventive cleaning |
High |
Very HighRegular Bag change requiredCompressed air required |
Low |
| Flexibility of Fuel |
Excellent |
Good. However sudden increase in ash% will call for more emission at outlet. |
Low, more than designed parameters and type of fuel may not work. |
Outlet parameters vary. |
| Fire Hazard |
Nil- Due to water inside |
Yes |
Yes |
Nil |
| Ash Handling |
Wet ash handling |
Dry ash- Fine required pneumatic conveying |
Dry ash- Fine required pneumatic conveying |
Manual- ash spreading takes place |
