A study on the removal of acetaldehyde in flue gas by a biological deodorizing method

摘要

Experiments were conducted to study the removal of acetaldehyde in flue gas using a packed tower equipped with a biological scrubber for deodorization. The test conditions included using flue gas with an acetaldehyde concentration of 15 ppm, anacetaldehyde volumetric load of (0.4 kg/(m{sup}3·d), and an SV of 600 h{sup}-1. Experimental results indicated that stable removal was possible, with the acetaldehyde concentration decreased to below 0.2 ppm. However, continuous long-term operationresulted in an increase in residual sludge in the tower, and a significant rise in pressure loss in the same. It was found that using a hydrogen peroxide solution was effective for removing such residual sludge.