Practical Application of the Method for Deodorizing Malodor in Exhaust Gas with Sodium Hypochlorite

Abstract

Practical application of the method for deodorization of exhaust gas which hypochiorite was investigated.
Malodor in exhaust gas from night soil and sewage treatment plants can be treated almost perfectly by oxidizing firstly dimethyl sulfide, dimethyl disulfide, ammonia, trimethylamine, styrene, and acetaldehyde with sodium hypochlorite solution (1.2×10^-2mol/l, pH7) at the superficial gas velocity of 1.7m/s in a packed tower and by oxidizing next hydrogen sulfide and methyl mercaptan remaining unreacted with sodium hypochlorite solution (the same concentration, pH11) in another packed tower, upon the condition that gas is completely collected and the process air rate is set properly.
The system is free both from malodor trouble at gas sources and from carbonate-scaling.