How to Effectively Remove the Odor in the Composting Process of Organic Fertilizer

Sources of odor in organic fertilizer production process: The odor in organic fertilizer production mainly comes from raw material decay and deterioration, organic fertilizer fermentation and organic fertilizer drying, etc. Organic fertilizer production of odor substances of many kinds, a wide range of sources, generally ammonia, hydrogen sulfide, etc., on human respiratory, digestive, cardiovascular, endocrine and nervous system will cause varying degrees of toxicity, some odor even without health hazards, there are mental or emotional stimulation and impact on people.　

Composting process odor generation stage: mainly generated in the early stages of fermentation, due to the rapid degradation of easily decomposed organic substances consume a lot of oxygen, resulting in local hypoxia and small molecules of organic substances and hydrogen sulfide. At this time, due to the low pH is not easy to produce ammonia volatilization, about 1-2 weeks later, as the compost pH increases and a lot of ammonia volatilization. At this time, the compost has gradually completed composting primary fermentation.　
　
Composting process odor suppression and elimination: by adjusting the aeration of the material, increase ventilation and add adsorbent materials can be suppressed to some extent the generation of odor. However, due to the large amount of fermentation materials, the concentration of odor generation and the relative closure of the site, the odor concentration in the fermentation site is extremely high, and sometimes the concentration of ammonia in the site is as high as 300 mg/L or more. This also causes a large loss of nutrients. Measures need to be taken to collect and treat.　　

At present, there are many ways to eliminate odor, such as water washing, chemical treatment, combustion, adsorption, air dilution, masking, ozone oxidation, plasma, and biological deodorization method.
　　
Production of a more widely used is the biological deodorization method, this method is under the action of biological, biological and chemical reactions to decomposition, transformation of odor components to achieve the purpose of deodorization. Currently, the application is the use of microorganisms to deal with odor. Therefore, also called microbial deodorization method. This method has the greater advantage of low operating costs, energy and resource savings and easy maintenance.