Anaerobic solid reactor

Abstract

The invention relates to an anaerobic solid reactor. In the equipment, waste water containing a high-concentration solid organic matter is used as a raw material for producing marsh gas; and the reactor can be used for treatment and energy recovery of the organic waste water with high solid content and high concentration, such as vinasse waste liquid, poultry breeding waste liquid and the like. The anaerobic solid reactor comprises a reaction tank body, and is characterized in that: the middle part of the reaction tank body is columnar, the upper part of the reaction tank body is frustum-shaped and the lower part of the reaction tank body is inverted frustum-shaped; the upper part of the reaction tank body is provided with a marsh gas discharge device and a water discharge device; a phaseseparation device, a flow stabilizing device, a gas collection crust breaking device and a backflow stirring and water inlet device are arranged inside the reaction tank body; and the lower part of the reaction tank body is provided with a sludge discharge device. The invention has the advantages that: the equipment solves the problems that the sludge in the reactor is difficult to mix, the sludge retention time is short, the release of the marsh gas is influenced due to crusting of a surface sludge layer, and the like.

Description

technical field [0001] The invention relates to an anaerobic solid reactor, which is used to produce biogas with waste water containing high-concentration solid organic matter as raw material, and can be used for the treatment and treatment of high-solid and high-concentration organic waste water such as distiller's grain waste liquid and livestock and poultry breeding waste liquid. energy recovery. Background technique [0002] With the improvement of environmental protection requirements and the need for resource recycling, anaerobic fermentation plays an important role in the treatment of agricultural product processing waste, livestock and poultry breeding wastewater, and the generation of new energy-biogas. The anaerobic fermentation method is the core of biogas production The ecological engineering model has become the development direction of high solid organic waste treatment and comprehensive utilization of resources, and also puts forward requirements for the furth...

AI Technical Summary

Problems solved by technology

There is no stirring device in the traditional USR reactor. The feed enters the bottom of the tank through the pipe water distribution system evenly distributed at the bottom of the reactor, and then flows upward through the sludge bed to be converted into biogas by anaerobic microorganisms. In large-scale biogas projects, USR The reactor has a large volume and a large diameter. Due to the small amount of feed, this water distribution method cannot actually meet the requirements of uniform water distribution and is easy to block, resulting in a dead zone in the reactor, and the actual effective volume is greatly reduced. In addition, The natural agitation of the biogas generated in the tank alone cannot provide sufficient mixing, the microorganisms in the reactor cannot effectively contact the solid organic matter, the mass transfer and anaerobic digestion reaction rate is low, and the conversion rate of organic matter into biogas is low.

In addition, according to relevant information, there have been engineering accidents in which the tank body swelled and cracked due to the incrustation on the liquid surface that prevented the release of gas.

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