Deodorization plan for food factories

1、 Project Background

Food factories are prone to producing odorous gases such as hydrogen sulfide, ammonia, and organic sulfides during raw material processing, fermentation, and cooking. Traditional chemical spraying or activated carbon adsorption methods have problems such as high operating costs and secondary pollution. This plan adopts biological deodorization technology, which decomposes odor molecules through microbial metabolism to achieve green and efficient treatment.

2、 Technical principles

1. microbial degradation
Screening composite bacterial strains (such as sulfur oxidizing bacteria, nitrifying bacteria, etc.) to form biofilms in the biological filtration tower, converting odorous gases intoCO₂TheH₂O and harmless salts.

2. System Composition

oPreprocessing segmentSpray tower removes dust and adjusts gas humidity (humidity needs to be maintained)60% -80%).

oBiological filter bed: Fill organic-Inorganic mixed filter material (such as bark and volcanic rock) provides a carrier for microbial attachment.

ointelligent control systemReal time monitoringpH、 Temperature, pressure difference, automatic adjustment of spray frequency.

3、 Implementation steps

1. Exhaust gas collection
Design a closed gas collection hood based on the workshop layout+Negative pressure pipeline system ensures that odorous gases do not escape.

2. Equipment selection

oProcessing air volume: by workshop areaCalculate the ventilation rate (recommended 8-10 times/hour).

oFilter material thickness:≥1.5m， The dwell time is ≥ 15 seconds.

3. Operations Management

oCheck the moisture content of the filter material weekly and replenish the microbial agent monthly;

oReplace every quarter30% filter material to maintain activity.

4、 Benefit analysis

·environmental benefits: Exhaust gas removal rate≥ 90%, in compliance with the "Emission Standards for Odor Pollutants" (GB14554-93).

·economic benefitsReduced energy consumption compared to traditional methods35%, with a device lifespan of 8-10 years.

Attachment: Case data
After adopting this plan, the number of complaints in the surrounding area decreased for a certain sauce braised products factory95%, saving 180000 yuan in processing costs annually.