Process for gradient treating organic wastes
An organic waste, cascade technology, applied in the field of cascade treatment of pig and/or cow manure, can solve problems such as power supply shortage
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[0024] The collected cow manure is pretreated to meet the needs of conventional anaerobic digestion to prepare biogas. The produced biogas is used for power generation, and the rest of the biogas digester is discharged into the sedimentation tank for sedimentation. The obtained liquid is biogas slurry, part of which is used For planting forage grass. The slag is biogas residue, which is used to plant mushrooms after drying with the help of solar dryers, and the leftovers after harvesting mushrooms are used to breed earthworms, and vermicompost is used to plant forage grass.
[0025] The method provided by the invention forms a benign ecological cycle, realizes the maximum comprehensive utilization of waste resources, and is the most economical and practical treatment method for solving livestock and poultry manure pollution.
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