An Anaerobic Digestion Device For Strengthening Biogas Production By Self-Sustaining Air Floatation

摘要

#$%^&*AU2020100952A420200716.pdf#####Abstract The invention provides an anaerobic digestion device for strengthening biogas production by self-sustaining air floatation, which comprises an anaerobic digestion main tank unit, a self-sustaining air floatation screening unit and a biogas metering collection unit, the self-sustaining air floatation screening unit includes a bottom-up connected air floatation screening part, a material precipitation part, an active reflux part and a three-phase separation part, and the digested material in the main tank unit of anaerobic digestion is pumped into the air floatation screening section, the overflow enters the precipitated part of the material and then rises to the active reflux part. The gas components enter the biogas metering collection unit through the three-phase separation part together with the gas production of the main tank unit of anaerobic digestion; based on the phenomenon of organic matter being degraded to produce biogas in the anaerobic process, the anaerobic digestion device of the invention plays the role of self-sustaining air floatation-screening-reflux of highly active microorganisms and discharge of more difficult degradable materials by adding a self-sustaining air floatation screening unit, in order to effectively avoid the problem of insufficient degradation caused by short flow of materials in the process of anaerobic digestion of organic solid waste.Air Outlet FF A IA Sampling Valve Sampling Valve Injection Valve Emptying Valve Emptying Valve Backflow Valve Figure 2