Symptom 1: The newly built biogas digester does not change after two weeks or three weeks after feeding or when the digester is refueled for the second time. Possible causes: 1 There is no connection somewhere in the gas pipeline. A large amount of air leakage occurred at the cover of the event. The water level between feed and water pressure was too low. 2 Inoculated bacteria were not enough or insufficient. 3 There were more toxic bacterial substances in the raw materials. Treatment methods: 1 Connect the gas pipe, seal the active cover or increase the amount of raw materials and water, so that the normal water level 2 increase the inoculum size 3 clean up the entire liquid, re-feed Symptom 2: After a period of normal gas production, the water column of the barometer drops rapidly Possible causes: 1 Insufficient amount of inoculum, or acidification of raw material 2 with just sprayed drugs in the tank, too much weeds, too little fecal material, or too much raw materials for one-time treatment of poultry manure: 1 Remove the inoculum from the longer-lived digester and put it into the tank. The raw materials collected by stacking shall be measured after entering the pool 2PH test paper after the disappearance of the drug property. After confirming the acidity, add appropriate amount of ash or clear lime water, adjust the PH value to about 7, or increase the amount of manure to be fed. To feed batches, you can not feed most of the time to prevent acidification Symptom 3: The barometer and water column are very high, but the gas drops quickly Probable causes: Too much raw material and water to be added, and the space in the air chamber is too small. Disposal method: Excessive feed liquid to normal water level Symptom 4: normal gas production, suddenly not producing gas Possible causes: 1The movable cover is opened; 2 The gas pipeline is broken or disconnected 3; The gas pipeline is bitten by a mouse; 4 The pressure gauge or the joint leaks; 5 The pool suddenly leaks; 6 After use, the valve is not closed or Lazy Treatment method: Reinstall the movable cover, do a good job of sealing, connect the gas pipeline, replace damaged management roads, joints, and pressure gauges.
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Check valve after maintenance and gas use
Diagnosing failures and remedies before the normal operation of the digester