Odor Control for Fermentation & Drying ExhaustJiangxi For Yibang Industrial Co., Ltd.

Background:

The facility generates complex odor exhaust from drying and fermentation processes, including mixed organic smells, fermentation gases, and high-temperature air streams.

The challenges were clear:

1. Odor composition is complex, with both water-soluble and non-soluble organics

2. Strong and persistent odor, difficult to remove completely

3. High inlet temperature affecting treatment stability

4. Need to meet both emission and odor standards

Solution:

Chaori designed a combined wet scrubbing + biological deodorization system.

The front-end scrubber removes soluble pollutants and stabilizes gas conditions, while the biofilter section handles remaining odor compounds through microbial degradation.

To ensure stable biological performance, a dedicated cooling and temperature control section is integrated before the bio stage.

What Makes It Different: 

1. Pre-treatment + bio-stage matching design, instead of relying on bio alone

2. Enhanced inlet and airflow structure, improving gas distribution inside large towers

3. Full-contact scrubbing layout, reducing untreated zones

4. Temperature-controlled bio section, keeping microorganisms active and stable

5. Anti-clogging and easy-maintenance design for long-term operation

Results:

1. Significant reduction in complex odor emissions

2. Stable operation despite high temperature and variable gas composition

3. Consistent compliance with emission and odor standards

4. Low operating cost with minimal secondary pollution

Conclusion:

For odor control, the challenge is rarely a single gas — it’s the combination of different compounds and conditions.

By combining pre-treatment and biological degradation in a controlled way, the system achieves stable and efficient odor removal in real operating conditions.