Method and system for cooperatively treating sludge through grate furnace waste incineration

Abstract

The invention discloses a method and system for cooperatively treating sludge through grate furnace waste incineration, and belongs to the field of sludge treatment. Steam generated by grate furnace waste incineration is firstly utilized for carrying out indirect heat exchange drying on the sludge, and then the sludge dried to a certain degree and in-furnace waste are mixed and incinerated in a grate furnace according to a certain proportion. According to the method and system, the existing and mature grate furnace waste incineration technology is utilized for achieving effective drying and cooperative incineration on the sludge, the sludge independent drying cost and the building and operating cost of an incineration treatment project can be greatly reduced, and harmlessness, reduction and recycling of sludge treatment are achieved.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a method and a system for synergistically treating sludge with grate furnace garbage incineration. Background technique [0002] With the rapid development of economy and society and the acceleration of urbanization, the amount of sewage treatment in cities and towns has increased rapidly, and the sludge in sewage treatment plants has also increased sharply. According to statistics, the annual output of sludge in urban sewage treatment plants in China has exceeded 30 million tons . Sludge contains a large amount of organic matter, rich nutrients such as nitrogen and phosphorus, heavy metals, germs and pathogenic bacteria, etc. If it is not treated and discharged, it will cause serious pollution to the environment. How to effectively and economically dispose of sludge and realize the resource utilization of sludge has become a worldwide environmental problem,...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a method and system for cooperating sludge incineration with grate furnace waste incineration, using the steam generated by waste incineration waste heat to heat and dry the sludge in sewage treatment plants, and then dry the sludge after drying A certain degree of sludge is put into the grate furnace, mixed with garbage for incineration, and mature grate furnace waste incineration, waste heat utilization and flue gas treatment technologies are used in the follow-up process to achieve harmless and efficient sludge treatment. Reduction and resource utilization, solving the problem of high construction and operation costs of separate sludge drying and incineration treatment projects in the existing technology

Images