Thermal hydrolysis and anaerobic digestion processing method for household refuse and device thereof

Abstract

The invention provides a thermal hydrolysis and anaerobic digestion processing method for household refuse and a device thereof. The processing method is used in a device comprises a sorting system, a thermal hydrolysis system, an anaerobic digestion system, a biogas treatment system, a steam supply system and a dewatering system, and comprises the step of first pumping sorted organic refuse into the slurry tank of the thermal hydrolysis system and uniformly mixing, pumping the mixture in the slurry tank into a reaction tank, then pumping the mixture in the reaction tank into a pressure relief tank, and finally importing the mixture in the pressure relief tank into a heat exchanger for cooling. After the mixture obtained via the thermal hydrolysis processing is processed by the anaerobic digestion system, the purposes of harmlessness and reduction of household refuse are ultimately realized. Compared with the prior art, the processing method has advantages of being high in efficiency, low in processing cost, and suitable for continuous operation processing; and by using the method, the dehydration rate of biogas feed can be improved by 30%, thereby reducing transportation costs.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to a harmless and reduction disposal technology for domestic waste, in particular to a thermal hydrolysis anaerobic digestion treatment method and device for domestic waste. Background technique [0002] The anaerobic digestion technology of domestic waste is to use microorganisms to decompose organic matter in a specific anaerobic environment and convert it into biogas energy. The biogas and sewage produced provide raw materials for the preparation of compound fertilizers and liquid fertilizers, and realize the harmlessness of domestic waste. , reduction, and energy-based treatment technologies. Disadvantages of traditional anaerobic digestion technology for domestic waste: [0003] 1. The organic waste sent to the digestive irrigation is not sterilized, and the harmful pathogens of the generated biogas are not completely eliminated; [0004] 2. Low anaerobic digest...

AI Technical Summary

Problems solved by technology

[0003] 1. The organic waste sent to the digestive irrigation is not sterilized, and the harmful pathogens of the generated biogas are not completely eliminated;

[0004] 2. Low anaerobic digestion and decomposition capacity;

[0005] 3. The dehydration rate is low, resulting in biogas material with low solid content, which increases transportation costs

This patent adopts the traditional anaerobic digestion technology treatment method, which has the disadvantages of low anaerobic digestion and decomposition capacity, low solid content of biogas material and incomplete elimination of harmful pathogens

Images