Novel anaerobic fermentation equipment and method for sludge

Abstract

The invention discloses novel anaerobic fermentation equipment and method for sludge. The equipment and the method are used for solving the problems of the existing anaerobic fermentation equipment for the sludge during sludge fermentation that the stirring is nonuniform, the stirring effect is poor, the sludge fermentation rate is low, the work efficiency is low, and biogases generated from the sludge fermentation cannot be exhausted from the sludge promptly. According to the equipment and the method, a stirring shaft moves downwards while carrying out stirring, so that the sludge stirring effect is greatly improved, and the stirring of the sludge is more uniform. The stirring shaft carries out rotary stirring intermittently, so that the reduction of stirring resistance is facilitated, and the phenomenon of jamming is prevented. Wedge-shaped convex ribs on a rotating table and butting convex ribs on the external bottom surface of a fermentation drum are in butted fit so as to regularly dither the fermentation drum while carrying out stirring on the sludge, thus, on one hand, the stirred sludge can be prevented from overflowing from the fermentation drum, on the other hand, the sludge is vibrated, and the timely discharge of the gases from the sludge is facilitated.

Description

technical field [0001] The invention relates to a fermentation equipment, more specifically, it relates to a novel sludge anaerobic fermentation equipment and method. Background technique [0002] At present, the methods for dealing with organic sludge and domestic waste in my country are mainly traditional filling, incineration, and fertilizer pushing. Renewable resources are used, resulting in waste of resources. For municipal sludge, the common method now is to carry out anaerobic fermentation, send the raw sludge into the fermentation tank and mix it with the sludge in the tank, then carry out stirring anaerobic fermentation to obtain methane fuel, and discharge the decomposed sludge from the tank . However, many sludge anaerobic fermentation equipment currently used have uneven stirring during the sludge fermentation process, poor stirring effect, slow sludge fermentation speed, low work efficiency, and the biogas produced by sludge fermentation cannot be discharged fr...

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the uneven stirring in the sludge fermentation process of the existing sludge anaerobic fermentation equipment, poor stirring effect, slow sludge fermentation speed, low work efficiency, and the biological gas produced by sludge fermentation cannot be removed from the sludge in time. In order to meet the shortage of discharge, a new type of sludge anaerobic fermentation equipment and method is provided, which can stir the sludge evenly during the fermentation process, the stirring effect is good, the sludge fermentation speed is fast, the work efficiency is high, and the sludge produced by sludge fermentation Biogas can be discharged from the sludge in time, which is beneficial to improve the fermentation speed and fermentation effect

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