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Multi-source organic solid waste treatment system and method for pollutant recycling

A disposal system, a technology for organic solid waste, applied in the direction of biological organic part treatment, combustion method, organic fertilizer equipment, etc., to achieve significant economic and environmental benefits, good demonstration benefits, and improved energy efficiency.

Active Publication Date: 2021-07-30
TONGJI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, there is currently no method that can rationally utilize cement kiln flue gas, so as to realize the resource utilization of pollutants in the park

Method used

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  • Multi-source organic solid waste treatment system and method for pollutant recycling
  • Multi-source organic solid waste treatment system and method for pollutant recycling

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Embodiment 1

[0029] Such as figure 1 As shown, a multi-source organic solid waste disposal system for pollutant resource utilization provided in this embodiment is characterized in that it includes an anaerobic pretreatment system 1, an anaerobic digestion treatment system 2, and a cement kiln co-processing system 3 , aerobic composting disposal system 4;

[0030] The solid outlet of the anaerobic pretreatment system 1 leads to the anaerobic digestion treatment system 2;

[0031] The biogas residue outlet of the anaerobic digestion treatment system 2 is connected to the cement kiln co-processing system 3 and the aerobic composting treatment system 4 respectively;

[0032] The malodorous gas exhaust port of the anaerobic pretreatment system 1 and the malodorous gas exhaust port of the aerobic composting disposal system 4 are jointly connected to the cement kiln co-processing system 3, and the high-temperature flue gas exhaust port of the cement kiln co-processing system 3 is connected to t...

Embodiment 2

[0041] This embodiment is a multi-source organic solid waste disposal method for recycling pollutants using the system provided in Embodiment 1, including the following steps:

[0042] 1) According to the different sources of pollutant organic solid waste, feed them into the anaerobic pretreatment system 1 and the cement kiln co-processing system 3 in different treatment systems;

[0043] 2) Municipal sludge and food industry sludge are mixed and enter the flue gas method pretreatment tank 1, and pretreated sludge is obtained after high-temperature flue gas pretreatment. The food waste is pretreated by "sorting and removing impurities - crushing and pulping - three-phase separation" to obtain the oil phase and solid-liquid mixed phase, and then the pretreated sludge and the solid-liquid mixed phase obtained after pretreatment of the food waste After mixing, enter the anaerobic digestion tank 2 for anaerobic digestion;

[0044] 3) After the biogas residue digested by the anaer...

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Abstract

The invention relates to a multi-source organic solid waste treatment system and method for pollutant recycling. The system comprises an anaerobic pretreatment system, an anaerobic digestion treatment system, a cement kiln co-treatment system and an aerobic composting treatment system, wherein high-temperature flue gas generated by the cement kiln co-treatment system is introduced into the anaerobic pretreatment system through an exhaust port; and malodorous gas of the anaerobic pretreatment system and malodorous gas of the aerobic composting treatment system are respectively introduced into an air inlet of the cement kiln co-treatment system through the exhaust port. According to the system and method provided by the invention, the conversion from the pollution attribute of the high-temperature flue gas to the resource attribute in the co-treatment process of multi-source organic solid waste in a single park is realized, and the cracking pretreatment before anaerobic digestion of sludge is performed by fully utilizing nitrogen oxides and high-temperature heat energy in the flue gas; moreover, the system provided by the invention thoroughly solves the problems caused by malodorous gas in the organic solid waste biological treatment process.

Description

technical field [0001] The invention belongs to the technical field of organic solid waste treatment, and in particular relates to a multi-source organic solid waste treatment system and method for recycling pollutants. Background technique [0002] At present, the annual output of urban solid waste in the world is about more than 2 billion tons, and it is expected to reach 3 billion tons in 2025. With the increase of population and the acceleration of industrialization, municipal solid waste presents the characteristics of high organic matter and high water content. With the continuous improvement of people's living standards and urbanization levels, more and more organic solid wastes (hereinafter referred to as organic solid wastes) are also produced. In China, organic solid waste accounts for 40% to 70% of the total urban solid waste, and the sources are diverse, including kitchen waste, municipal sludge, food industry sludge, papermaking waste, traditional Chinese medici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C02F11/02C02F11/04C02F11/12C05F17/90F23G7/00
CPCB09B3/00F23G7/00C02F11/04C02F11/12C02F11/02C05F17/90Y02W30/40Y02E50/30
Inventor 徐斌朱自瀚赵由才周涛
Owner TONGJI UNIV
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