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Method for promoting anaerobic digestion of sludge to produce methane under high ammonia nitrogen habitat by utilizing biomass carbon with high carbon nitrogen ratio

A technology of biomass carbon and high carbon-to-nitrogen ratio, which is applied in the direction of biological sludge treatment, chemical instruments and methods, sludge treatment, etc., can solve the problem of being unable to adapt to the environment with higher ammonia nitrogen concentration and restricting the application and development of sludge anaerobic digestion technology , Narrow application range, etc., to achieve the effect of promoting methane production efficiency of sludge, low production cost, and environmental friendliness

Active Publication Date: 2022-08-05
TONGJI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the actual application scenarios will face various high ammonia nitrogen stress habitats, which require different biomass carbon materials to be realized separately. At the same time, the existing biomass carbon materials can only promote the gas production problem in general high ammonia nitrogen stress habitats , such as the document CN113880384A, the ammonia nitrogen environmental concentration that can be applied is still less than 2000mg / L, and the stress problem of higher ammonia nitrogen concentration is still relatively blank. Seriously restricting the practical application and development of sludge anaerobic digestion technology

Method used

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  • Method for promoting anaerobic digestion of sludge to produce methane under high ammonia nitrogen habitat by utilizing biomass carbon with high carbon nitrogen ratio
  • Method for promoting anaerobic digestion of sludge to produce methane under high ammonia nitrogen habitat by utilizing biomass carbon with high carbon nitrogen ratio
  • Method for promoting anaerobic digestion of sludge to produce methane under high ammonia nitrogen habitat by utilizing biomass carbon with high carbon nitrogen ratio

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Embodiment 1

[0037] The invention provides a method for promoting methane production by anaerobic digestion of sludge in a high ammonia nitrogen environment by utilizing biomass carbon with a high carbon-nitrogen ratio, comprising the following steps:

[0038] (1) Preparation of high carbon-nitrogen ratio biomass carbon materials. Use banana peels as raw materials, weigh them evenly into a tray, and put them in the oven to dry. Place the dried banana peel in the high-temperature furnace, cover the furnace door of the high-temperature furnace, set the heating rate to 20 °C, raise the temperature from 20 °C to 360 °C, and then carbonize at a constant temperature for 2 hours. to room temperature of 20°C. After dry distillation and carbonization, it was cooled and taken out, put into a crusher for crushing, dried at 105 ° C for 24 hours, and then stored in a sealed bag for further use.

[0039] The appearance characteristics of banana peel biomass carbon material are as follows figure 1 sho...

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Abstract

The invention discloses a method for promoting anaerobic digestion to produce methane under a high ammonia nitrogen habitat by utilizing biomass carbon with a high carbon nitrogen ratio, which is characterized in that a biomass carbon material prepared by utilizing a dry distillation carbonization method is added into municipal sludge for medium-temperature anaerobic digestion treatment, so that the efficiency of producing methane by anaerobic digestion of the sludge under different ammonia nitrogen stress habitats is promoted; the resource utilization of the sludge is realized.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment technology and application, and in particular relates to a method for utilizing biomass carbon with a high carbon-nitrogen ratio to promote methane production by anaerobic digestion of sludge in a high-ammonia-nitrogen habitat. Background technique [0002] The treatment and disposal of sludge has become an important problem in my country. Excess sludge is the product of the transfer and transformation of pollutants in the process of urban sewage treatment, and is an unavoidable "by-product" at this stage. In recent years, with the increase in the amount of sewage treatment, the amount of excess sludge has also increased significantly. At present, the annual municipal sludge produced by sewage plants in my country has exceeded 30 million tons (with a moisture content of about 80%), and the sludge treatment and disposal forms are very severe. At the same time, due to the characteristics ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/04C02F101/16
CPCC02F11/04C02F2101/16Y02W30/40Y02E50/30C02F11/004C02F1/283C02F2303/06
Inventor 王林何云鹏李咏梅平倩林雨倩奚志成
Owner TONGJI UNIV
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