Control of pollution created by suspended particulate matters (SPM) from small and medium scale iron and steel and refractory industries: the dry and wet options

In the design of pollution control systems, the designer is often faced with the crucial decision to choose between either a dry or a wet system. The choice is not often easy as factors such as cost, availability of process water implications of causing secondary pollution due to the discharge from the scrubbers conflict with each other. Some of these issues have been critically analyzed in this paper with specific examples from pollution control in metallurgical industries.