Domestic waste incineration process based on mechanical biological joint pretreatment and system thereof

Abstract

The invention relates to a domestic waste incineration treating process, in particular to a domestic waste incineration process based on mechanical biological joint pretreatment. The process comprises the following specific steps: 1) manual pre-sorting, in which large-size inert components easy to sort in domestic waste are sorted out; 2) mechanical pulverization, in which the components are pulverized into grain diameter of about between 30 and 70 mm; 3) the mechanical biological joint pretreatment, in which the domestic waste mechanically pulverized is subjected to microbial aerobic fermentation, in the fermentation process, reaction heat is generated, so that a domestic waste material pile is automatically heated to the temperature of between 50 and 60 DEG C, and simultaneously, the pretreatment is assisted with mechanical treatment for turning, piling and ventilating the material pile; 4) incineration, in which no auxiliary material is needed to add for incineration treatment; and 5) utilization of heat energy: residual heat is used for power generation or is supplied for the mechanical biological joint pretreatment. The domestic waste incineration process has the advantages that the process and a waste collection and transportation system form an urban domestic waste full-process management system so as to realize quantity reduction, recycling and harmlessness of the treatment of the domestic waste and meet the concept of cyclic economy and sustainable development.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to an incineration treatment process for domestic garbage. Background technique [0002] At present, the domestic garbage in many cities and towns in China still adopts simple stacking methods, and the mixed domestic garbage is a kind of extremely complex waste, including plastic, rubber, wood, bamboo, paper, dust, brick, metal, glass, textile, etc. Due to biodegradation and chemical action, some components gradually rot and biodegrade, producing leachate and biogas, which cause serious pollution to soil, water and the atmosphere. [0003] Domestic and foreign domestic waste treatment technologies all aim at reduction, recycling and harmless treatment, mainly including sanitary landfill, incineration and composting technologies, each with different application scope and conditions. [0004] Sanitary landfill is the most widely used treatment technology in China. It i...

AI Technical Summary

Problems solved by technology

In this method, the natural fermentation of garbage can only increase the calorific value of garbage to a limited extent, and the low-level calorific value required for stable combustion cannot be achieved after the original garbage is treated. The waste water produced by garbage fermentation is leachate, and the leachate needs to be sent to the city's secondary sewage treatment plant to process

Otherwise, it will cause secondary pollution, and the treatment results will not be thorough. Moreover, according to the new regulations in 2008, this leachate treatment method will be banned after 2011.

Images