Odor self-regulation composting system and process

Abstract

The invention relates to the technical field of kitchen waste treatment, in particular to an odor self-regulation composting system and process. The system comprises a composting fermentation system and a composting aging system; the composting fermentation system is a composting closed space formed by a composting chamber, and the composting aging system is an aging closed space formed by an aging chamber; a plurality of aeration openings are formed in the bottom end of the composting chamber and are communicated with the ageing closed space through pipelines; a plurality of aeration openings are formed in the bottom end of the aging chamber and are communicated with the compost closed space through pipelines. The process comprises the following steps: pretreating the kitchen waste; carrying out the aerobic composting in the composting chamber, and carrying out the decomposition and aging in the aging chamber; in the composting fermentation period, conveying odor generated in the composting chamber into the composting materials in the aging chamber, and degrading and purifying the odor; conveying the odor at the upper part of the aging chamber to a composting chamber, and adjusting the C / N and pH value of the composting material. The odor self-regulation can be realized, the nitrogen loss in the composting process is less, and the nitrogen in the composting product is increased.

Description

technical field [0001] The invention relates to the technical field of kitchen waste treatment, in particular to an odor self-regulating composting system and process. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the economic and social development and the substantial increase in material consumption, the amount of domestic waste in my country has grown rapidly, and environmental hazards have become increasingly prominent, which has become a restrictive factor for the development of new urbanization. Food waste is an important part of domestic waste. It not only has high water content, salt content and oil content, but also is generally acidic. Therefore, it has h...

AI Technical Summary

Problems solved by technology

In engineering projects, the independent deodorization system not only needs to increase investment funds and increase the floor area, but also the instability of deodorization efficiency will still cause part of the odor to be discharged into the environment, causing pollution

[0005] The odor produced by composting will not only cause environmental pollution, but also the ammonia produced will cause a large amount of nitrogen loss. Nitrogen is an important component of fertilizers. If a large amount of nitrogen is lost, it will definitely reduce the value of composting products.

The traditional method of reducing nitrogen loss mainly converts the produced ammonia into NH by adding chemicals 4 + Fixed in the heap; in addition, by adding auxiliary materials to increase the carbon-nitrogen ratio of the heap, and promote the conversion of ammonium nitrogen into organic nitrogen, but the traditional method is not only costly, but also affects the entire composting process if the dosage is too high

Images