Aerobic fermentation device and method for organic waste

Abstract

The invention discloses an aerobic fermentation device and method for organic waste, and belongs to the field of waste treatment. The aerobic fermentation device comprises a box body, a chained turning-throwing device, an air supply system and a monitoring system, wherein according to functions, the box body is divided by a partition plate into a fermentation zone and an operation zone; a heat preservation layer, a feeding port, a discharging valve plate, an exhaust vent and a waste liquid port are arranged in the box body; the chained turning-throwing device comprises a driving motor, a movable gear group, a chain and scraping plates; turning, throwing, feeding and discharging of a material in the box body can be achieved; the air supply system comprises a draught fan, a control valve, a main pipe, branch pipes and a waste gas pipe; the monitoring system comprises a monitoring instrument and a control unit; and the control unit is used for controlling material feeding and discharging, running of the air supply system and other processes by monitoring and analyzing data fed back by the monitoring instrument. By adoption of the aerobic fermentation device, continuous feeding, continuous discharging, uniform mixing of the material, air supply as required and the reduction of odor emission can be achieved; the fermentation efficiency is improved and the fermentation period is shortened; and eventually, harmless and recycling treatment of the organic waste can be achieved.

Description

technical field [0001] The invention relates to the field of organic waste treatment produced in cities, towns, etc., in particular to an aerobic organic waste treatment system for treating urban organic waste such as dewatered sludge, domestic waste, and kitchen waste in urban sewage treatment plants. Fermentation equipment and methods. Background technique [0002] Usually, with the improvement of residents' living standards and the acceleration of urbanization, cities and towns continue to produce a large amount of urban organic waste, including dewatered sludge from sewage treatment plants, domestic waste, kitchen waste, garden waste, agricultural waste etc., which have caused phenomena such as "garbage siege" and "sludge dumping in disorder". According to relevant data, my country produced 100 million tons of domestic waste (including 60 million tons of kitchen waste) and 30 million tons of dewatered sludge in 2010. These pollutants have a high content of organic matt...

AI Technical Summary

Problems solved by technology

At the same time, due to the large number of sewage treatment plants, domestic waste and kitchen waste generation points in small and medium cities in China and their locations are scattered, or due to inconvenient transportation, their centralized treatment and disposal are limited.

For more than half of the small and medium-sized sewage treatment plants or other organic waste generation points, due to the small area of ​​the plant area, scattered locations and low sludge production, and most of the existing aerobic fermentation equipment has batch and static fermentation modes, it cannot be realized. Continuous operation, complex equipment configuration and high cost, etc., the fermentation efficiency of existing tank-type fermentation and warehouse-type fermentation is low, resulting in a long fermentation period (generally 20-30 days), which makes it occupy a large area. It is difficult to implement in the treatment plant

Therefore, it still lacks a suitable organic waste treatment and disposal equipment such as sludge with high efficiency, small footprint, low infrastructure investment and low operating costs.

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