Anaerobic-aerobic integrated treatment device and treatment method for domestic garbage in villages and towns

Abstract

The invention discloses an anaerobic-aerobiotic integrated treatment device of town household garbage. An outlet of a heat conducting oil pipe of the pretreatment device is connected with a three-phase insulation device; a steam outlet is connected with a heat accumulator; and a three-phase heat exchange insulation unit provides a heat source to an anaerobic fermentation tank and an aerobiotic fertilizer production device for insulation. A discharge port at the bottom of a damp / hot pretreatment device is connected with the anaerobic fermentation tank by a discharge pump; biogas is collected from a gas outlet at the top of the tank to enter a biogas purification system; and fermented biogas residues are pumped to the aerobiotic fertilizer production device by a slag pump. The device couples the anaerobic fermentation with a technology for preparing high-quality organic fertilizer through biogas slag humification, improves the bioavailability through the damp / hot hydrolysis pretreatment, and realizes high-value utilization of the town household garbage.

Description

technical field [0001] The invention belongs to the field of solid waste recycling, and in particular relates to an anaerobic-aerobic integrated treatment device for village and town domestic garbage. [0002] The invention also relates to a method for treating village and town household garbage by using the above-mentioned treatment device. Background technique [0003] With the acceleration of urbanization and the construction of villages and towns, the consumption level of residents in villages and towns has improved, and the amount of domestic waste generated by tourism around villages and towns and villagers' lives has increased year by year. The main components of domestic waste in villages and towns are perishable waste (40% to 50%), inorganic waste (25% to 35%), packaging waste (15% to 20%) and harmful waste (about 3%). Discarding or stacking in the open will cause serious pollution to the environment of villages and towns, not only occupying land and destroying the...

AI Technical Summary

Problems solved by technology

The traditional single-phase anaerobic fermentation technology is currently the first choice for biomass waste recycling, accounting for more than 90% in Europe. However, due to the high cellulose content in the waste, difficult hydrolysis, slow methane production process and difficult utilization of subsequent biogas residues, there is a problem Problems such as high cost, long fermentation cycle, and low material conversion efficiency

At the same time, there is still a lack of low-cost, low-energy, miniaturized, sustainable and harmless treatment and resource utilization key process equipment suitable for rural domestic waste

Images