A device for preventing scum crusting in anaerobic reactor

Abstract

The invention belongs to the field of anaerobic reactors, and more particularly relates to a device for preventing scum incrustation in anaerobic reactors. It includes the water inlet area set at the bottom, the first three-phase separation area set in the middle and the second three-phase separation area at the top; the first three-phase separation area includes several conical gas collection hoods and each conical The gas riser connected to the top of the gas collection hood; the first three-phase separation zone also includes a stirring component arranged above the upper nozzle of the gas riser and a fixed shaft for fixing the stirring component; the second three-phase separation zone includes a central Gathering gas outlet area and the surrounding water outlet area; the present invention guides the anaerobic generated gas by arranging a conical gas collection hood, a gas riser and a stirring part on the upper part of the gas riser in the anaerobic reactor, and utilizes the gas The impulsive force stirs the scum on the liquid surface, prevents it from crusting, improves the overall treatment effect of the anaerobic reactor, and ensures the long-term stable operation of the reactor.

Description

Technical field [0001] The present invention belongs to the field of anaerobic reactors, more particularly, relates to a device to prevent scum crusts of anaerobic reactors. Background [0002] Many industrial wastewaters contain scum and grease, such as aquaculture wastewater, landfill leachate and food processing wastewater. When treating such high-SS wastewater with anaerobic reactors, delamination is often prone to occur in fermentation systems. Less dense grease and high-fiber particles float in the upper part, and due to the small number of microorganisms in the upper part, these scum are not degraded effectively in time, thus remaining at the liquid level; At the same time, due to the small fluctuation of the liquid level, microorganisms attach to the scum are easy to form a biofilm, bonding more scum, and forming a scum layer. Over time, the scum layer gradually thickens, reducing the volume of the reaction zone of the anaerobic system, while the overly thick scum layer w...

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Problems solved by technology

[0006] Aiming at the defects of the prior art, the object of the present invention is to provide a device that is easy to operate, does not consume external energy, does not destroy the original anaerobic system water flow conditions, and has a good treatment effect to prevent anaerobic reactor scum from encrusting. , which uses the biogas generated in the anaerobic reactor to provide kinetic energy for the screw blades to prevent sludge crusting, and aims to solve the technical problems of complex devices for preventing scum crusting in the prior art anaerobic reactors and consumes a lot of energy.

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