Organic fertilizer processing equipment requires fermentation treatment, and fermentation bacteria play an important role in this process. Fermentation bacteria are suitable for neutral or alkaline environments, which are conducive to their reproduction, decomposition, and survival. In order for them to exert their fermentation function, it is necessary to regulate the pH value to achieve the desired effect. Today, we will explain the importance of regulating the pH value during the processing of organic fertilizer equipment:

The suitable living environment for bacteria and actinomycetes is neutral or slightly alkaline, while fungi prefer acidity. When fermenting organic waste such as feces, the bacteria and fungi inside decompose and digest the organic matter, releasing some organic acids. Organic acids accumulate during the continuous fermentation of feces and other organic waste, resulting in a decrease in the pH value of the fermentation material. At this time, the pH environment is suitable for the reproduction and decomposition of fungi, as well as for the degradation of wood and fibers in fermentation materials. As organic acids are further degraded by fermentation bacteria, the pH value of the fermentation material gradually begins to rise. The suitable pH environment allows actinomycetes and fungi to begin to proliferate, decompose, and ferment rapidly.

The low pH value is mainly affected by excessive moisture or fine materials. At this time, organic waste such as feces can easily become anaerobic during fermentation. When it becomes anaerobic, the accumulation of organic acids can reduce the pH value to below 4.5, which seriously affects the activity of fermentation bacteria inside the compost, causing them to stop activity and enter dormancy or death. At this point, it is necessary to use a manure turning machine to supply oxygen to the materials. After turning, the materials are relatively breathable compared to before, and the oxygen content is sufficient. Adequate oxygen content can restore the pH environment of organic waste such as manure to the normal range.

If the pH value is too high, the activity of many fermentation bacteria will decrease and the decomposition and reproduction of the material will not be carried out much. If it is higher than 11.5, a large number of fermentation bacteria will begin to die, causing protein denaturation and enzyme protein inactivation inside the fermentation material, thereby affecting the fermentation cycle and the quality of organic fertilizer.

However, the pH value of common fermentation materials does not need to be adjusted. Examples of materials that do not require pH adjustment include farm manure, sewage treatment plant sludge, straw, peat, mushroom residue, etc. Here, we will explain that the pH value of a normal composting fermentation environment is 5-9. If the pH value of the manure is higher than 9 during fermentation, it needs to be adjusted by adding ferric chloride, alum, strong acid, or compost return. If the pH value is lower than 4, lime, peat ash, etc. can usually be added for adjustment. Proper pH adjustment during manure fermentation can affect the fermentation environment, promote the growth, reproduction, and decomposition of fermentation bacteria, shorten the fermentation cycle, and enhance the quality of organic fertilizer produced from fermentation materials.

The above is an introduction to regulating the pH value of organic fertilizer equipment, hoping to be helpful to you.