Biogas digester crust solution

After a period of time in a rural household hydraulic digester, due to a part of the daily raw materials, the floating raw material floats under the action of buoyancy to generate scum and form crusts. It can lead to the obstruction of the biogas accumulation in the pool, the reduction of the effective volume and the air storage room, the reduction of raw material utilization, and the reduction of gas production. Severe crusts often result in a well-end digester becoming a "disease pool, waste pool." There is a simple way to solve the problem of biogas tank crust.
The specific method is: when the biogas production in the winter is low, the biogas in the biogas digester is used up, all the switches are turned on, and the biogas digester is in the zero pressure state. Take off the biogas connection hose from the air pipe, let the natural biogas produced daily discharge into the air, continue to add water to the biogas digester, so that the biogas digester is fully loaded, let the biogas digester stop running, that is, “rest” for 5-7 days. In this way, the dross in the upper layer of the biogas digester can be soaked in the biogas slurry. In the case of constant pressure, the dross will automatically fall down to form sediment, and the biogas residue can be extracted by an automatic slag discharge device.
Operation should pay attention to the following points:
1. During the rest period, it is forbidden to use an open flame near the mouth of the airway or to test the fire on the airway to prevent explosion.
2. At the same time when taking a break from the pool, a comprehensive inspection shall be conducted on each cover plate and the transmission and distribution system of the biogas digesters, and problems shall be repaired and replaced in time to ensure the safe use of the biogas tanks.

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