Practical Application of Semi-dry Anaerobic Digestion Technology of Kitchen Waste in Hohhot
In view of the problem of old kitchen waste treatment facilities and insufficient treatment capacity in Hohhot,a semi-dry anaerobic digestion treatment project with a treatment scale of 300 t/d was constructed,and the treatment effect was tracked and monitored.The actual operation shows that the yield of the semi-dry anaerobic digestion process reaches 90 m3/t,and the water consumption is 56-60 kg/t,which has a good water-saving effect.In order to confirm the stirring performance of the semi-dry anaerobic tank,a tracer test was carried out.After adding lithium bromide tracer,the material in the tank can be evenly distributed within 3 h,which improves the gas production effect.This technology not only realizes the resource utilization of kitchen waste,but also saves water and has a high gas production rate,which is suitable for popularization and application in water-scarce areas in western China.
kitchen wastesemi-dry anaerobic digestiondigestatetwo-stage A/O process