When processing organic fertilizers with organic fertilizer equipment, fermentation treatment is required, during which fermentation bacteria play a crucial role. Fermentation bacteria thrive in neutral or slightly alkaline environments, facilitating their reproduction, decomposition, and survival. To maximize their fermentation effect, pH levels must be regulated accordingly. Today, we will explain the importance of pH regulation in the processing of organic fertilizers with equipment

Bacteria and actinomycetes thrive in neutral or slightly alkaline environments, while fungi prefer acidic conditions. During the fermentation of organic waste such as manure, the decomposition of organic matter by bacteria and fungi releases organic acids. As these organic wastes continue to ferment, the accumulation of organic acids leads to a decrease in the pH of the fermentation material. This acidic environment is favorable for fungal growth and decomposition, as well as the degradation of lignin and cellulose in the fermentation material. As the organic acids are further broken down by fermenting microorganisms, the pH of the fermentation material gradually rises. The suitable pH environment promotes the proliferation and decomposition of actinomycetes and fungi, accelerating the speed of fermentation and composting.

A low pH level is primarily caused by excessive moisture or overly fine materials, which can lead to anaerobic fermentation of organic waste such as manure. During this anaerobic state, the accumulation of organic acids can reduce the pH below 4.5, severely affecting the activity of internal composting microorganisms, causing them to cease activity and enter dormancy or die. At this point, a manure turning machine is required to aerate the material by turning the pile. After turning, the material becomes relatively more ventilated, with sufficient oxygen levels, which can restore the pH environment of organic waste like manure to the normal range.

An excessively high pH level reduces the activity of many fermentative bacteria, significantly impeding material decomposition and reproduction. When the pH exceeds 11.5, fermentative bacteria begin to die off in large numbers, causing protein denaturation and enzyme protein inactivation within the fermented material. This ultimately affects the fermentation cycle and compromises the quality of the organic fertilizer.

However, the pH values of common fermentation materials do not require adjustment. Materials that do not need pH regulation include: farmyard manure, sludge from sewage treatment plants, straw, peat, mushroom residues, etc. Here is an explanation: the normal pH range for composting and fermentation environments is 5-9. If the pH exceeds 9 during manure fermentation, it can be adjusted by adding iron chloride, alum, strong acids, or returning compost material. If the pH falls below 4, lime or peat ash can typically be added for adjustment. Proper pH regulation during manure fermentation can influence the fermentation environment, promoting the growth, reproduction, and decomposition of fermentative microorganisms. This shortens the fermentation cycle and enhances the quality and efficacy of the resulting organic fertilizer.