Urban organic waste combined anaerobic treatment system and method

Abstract

The invention discloses an urban organic waste combined anaerobic treatment system and method. The system comprises a grille, a chute, a feeding conveyer, a separating device, a crushing device and ananaerobic fermentation device, waste is preliminarily filtered through the grille, then enters into the feeding conveyer through the chute and is transported by the feeding conveyer into the separating device for separation, and the waste in a lower waste box and the crushed waste discharged from the crushing device are both transported by a screen underflow belt conveyor into the anaerobic fermentation device for anaerobic fermentation treatment. The urban organic waste combined anaerobic treatment system and method have the advantage that the process of waste anaerobic treatment can be completed with high efficiency and high quality.

Description

Technical field [0001] The invention relates to a waste treatment technology, in particular to a combined anaerobic treatment system and method for urban organic waste. Background technique [0002] There are currently three more reliable treatment methods for municipal domestic waste, namely sanitary landfill, incineration for power generation and composting. [0003] Sanitary landfill investment is low. In some large and medium-sized cities, a polyethylene membrane is used to prevent seepage at the bottom of the landfill. After the waste is compacted, the treatment method is covered with a film, and there is a collection and treatment of seepage. A complete set of measures for filtrate, landfill gas, and soil pollution prevention and control. However, sanitary landfills have air pollution, soil pollution, and the possibility of surface water pollution and groundwater pollution, and have many problems such as large area and difficult site selection, and their application scope is...

AI Technical Summary

Problems solved by technology

In the existing integrated anaerobic fermentation process of municipal organic waste, there are defects in anaerobic fermentation and the pretreatment process before anaerobic fermentation. Specifically, waste treatment is a long-running system, and the existing anaerobic fermentation The separation process is not thorough. Generally, the drum structure is used for separation, the separation effect is poor, and when the separated materials are sent to the anaerobic fermentation device, the existing anaerobic fermentation equipment cannot be discharged immediately after the sand and gravel are produced during the operation process, resulting in In order to be forced to shut down to discharge sand, therefore, reducing the efficiency

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