After the fermentation raw material is put into the pool for normal use, over time, serious crusting, sedimentation, and delamination will occur within the fermentation chamber, resulting in a decrease in the effective volume between fermentations. If the fermentation material is not broken and large refueling, it cannot continue. use. At the same time, the distribution of the bacterial materials in the fermentation room is uneven. There are "blind fermentation areas" and "microbial-depleted areas" as well as the active suspended sludge is lost along with the materials. Microorganisms and fresh raw materials cannot be fully contacted, which affects the biogas digesters. The gas production rate and normal use. How to increase biogas digester production in winter? It is a topic that everyone is more concerned about, and talk about personal views for reference.
1. “Covering the quiltâ€, the temperature is an important external factor for the biogas fermentation. When the temperature is suitable, the bacteria will flourish, and the activity is strong. The anaerobic decomposition and methane production are fast and the gas production is high. Studies have shown that the chemical reaction rate increases with increasing temperature, and the reaction rate increases by 2 to 3 times for each temperature increase of 10° C. The biogas fermentation process is a biochemical reaction process carried out by microorganisms, and this is met within the normal temperature range. law. When the fermentation temperature is lower than 10°C, the microorganisms dormant and the gas production is very small, which is not sufficient for use. Therefore, the temperature of feed liquid must be controlled above 15°C to achieve gas production and use. For household biogas digesters, especially for the northern biogas digesters, the use of solar energy technology to increase the temperature of the biogas digester feed liquid is particularly important for increasing gas production. Therefore, before the winter, for the “three-combined†biogas system, plastic film should be used to cover the top surface of the solar livestock house. If the open-air biogas digester is not completed due to busy farming activities, it must be a biogas digester. Build a simple greenhouse or pile up straw for wintering.
2, "eat belly", biogas microorganisms to absorb nutrients, excrete waste and survival and reproduction, all need appropriate water, too much or too little water is not conducive to the activities of biogas and biogas production. If the amount of water is too much, the content of dry matter in the fermentation material liquid is small, and the volume of gas produced per unit volume is reduced. If the amount of water is too small, the fermentation material liquid is too concentrated and the organic acid is likely to accumulate, impeding the biogas fermentation and affecting the gas production. The concentration of starting material in rural biogas projects should generally be controlled below 6%, and the operating concentration should be controlled within the range of 5—10% with temperature changes. With the decrease of temperature, the concentration of feed solution should be gradually increased. For example, if a household raises 2 pigs (one big and one small), the biogas digester is started in August (concentration of the feed solution is 4% at the time of start-up). Since its use, the current production volume has started to decline, and there is an urgent need to add new materials. There are two major benefits. First, it can supplement microorganisms with nutrients needed; second, it can use fresh raw materials to ferment to increase the pool temperature, increase the gas production, and ensure the use of the farmers. Now we need to increase the feed concentration from 4% to 8%. How much fresh material should be added? In the absence of normal discharge, 1.2m3 or more of new material should be added. Note that all raw materials must not be added to the tank at the same time. It should be added multiple times (about 0.2m3 per 100kg of feed).
3, often stirring, stirring is an effective means of contact between microorganisms and food, its benefits are: often mixing the raw material within the biogas fermentation device, can make the raw materials and biogas microorganisms full contact, promote the metabolism of biogas microorganisms, make it grow rapidly, Improve the rate of gas production; it can break the upper crusts and make the biogas produced in the middle and lower layers attached to the fermentation raw materials accumulate into small bubbles and rise into the air box; the living environment of biogas microorganisms can be continuously updated. It helps them to obtain new raw materials.
The rural biogas project generally adopts the fermentation liquid reflux stirring method. There are three kinds of stirring methods: one is the manual reflux slag stirring device for strong reflux stirring; the other is to set a small sludge pump in the discharge tank, relying on electricity. The fermentation material liquid is returned to the fermentation room for forced agitation. The third method is the use of a biodynamic aerodynamic stirring device, which uses the power of the gas production and the use of gas to automatically stir the fermentation materials in the tank.
Organic Wolfberry 220 Specifications
Organic Bulk Wolfberry 220 Specifications,Bulk Red Wolfberry 220 Specifications,Natural Bulk Wolfberry 220 Specifications,Organic Wolfberry 220 Specifications
NINGXIA STARLIGHT FOOD TRADE CO.,LTD , https://www.starlightfood.com