Characteristics and Impact Assessment of Odor Pollution in an Ink Manufacturing Enterprise
This study investigated odor emissions from a large-scale ink manufacturing enterprise through comprehensive analyses of odor concentration, substance concentration, and characteristic odor compounds across all exhaust stacks. The aim was to assess odor dispersion patterns and identify critical odor-generating processes to inform strategic upgrades of air pollution control systems. The results showed that acrolein, hydrogen sulfide, isobutyraldehyde, m-xylene, p-xylene, and ethanol were screened as typical odor substances, with acrolein being ubiquitously present across all emission processes. The odor dispersion radius extended 1.4–2.6 km beyond the facility boundary. Vertical odor impact at a sensitive point 1 km from the plant boundary revealed a parabolic profile: concentrations initially increased with height, peaked at 30 m (equivalent to a 10-story building), then decreased at higher heights. The exhaust stack of the sewage treatment station accounted for 53.26% of total odor emissions, establishing this system as the priority control node for implementing enhanced air purification technologies in industrial air quality management.