A kind of municipal sludge co-processing method

A municipal sludge and co-processing technology, applied in biological sludge treatment, solid waste removal, etc., can solve the problems of low organic matter content in municipal sludge, failure to start operation, slow digestion process, etc. The effect of reducing the amount of oil and reducing the concentration of oil

Active Publication Date: 2022-05-24
江苏泓润生物质能科技有限公司
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Problems solved by technology

However, compared with other organic wastes, the organic matter content of municipal sludge is low, and anaerobic digestion alone generally has the problems of low carbon-nitrogen ratio and low gas production rate.
Other municipal organic wastes have a high content of organic matter and have a good potential for anaerobic digestion to produce methane. However, acid inhibition and ammonia nitrogen inhibition are prone to occur in the anaerobic digestion process alone, resulting in slow digestion process and even failure of start-up operation.

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  • A kind of municipal sludge co-processing method

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Embodiment Construction

[0063] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

[0064] The technical scheme provided by the present invention is as follows:

[0065] A municipal sludge co-processing method: comprising the following steps:

[0066] 1) Determine the types and corresponding carbon-nitrogen ratios of urban organic wastes participating in the municipal sludge co-processing;

[0067] 2) According to the formula C=(A 0 B 0 +A 1 B 1 +A 2 B 2 +…+A n B n ) / N (1)

[0068] Determine the corresponding treatment volume of municipal sludge and municipal organic waste;

[0069] in,

[0070] C is the optimal anaerobic digestion carbon to nitrogen ratio;

[0071] A 0 is the corresponding treatment amount of municipal sludge...

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Abstract

The invention relates to a municipal sludge collaborative treatment method; municipal sludge and one or several kinds of urban organic wastes are subjected to cooperative anaerobic digestion, and at the same time of joint anaerobic digestion, the municipal sludge and organic wastes And organic waste can also establish a variety of benign complementarities. For example, co-digestion of municipal sludge and municipal organic waste can dilute the concentration of heavy metals in sludge and the concentration of salt in organic waste, reducing the impact of toxic substances in the anaerobic digestion process. The inhibitory effect of anaerobic microorganisms can reduce the concentration of oil in the digested substrate and reduce the risk of "oil particles" formation; the co-digestion of municipal organic waste and municipal sludge can complement each other's missing nutrients and regulate the content of the digested substrate. The carbon-to-nitrogen ratio is suitable for anaerobic digestion; compared with separate treatment, co-digestion of municipal organic waste and municipal sludge can reduce infrastructure and operating costs, and has better economic benefits.

Description

technical field [0001] The invention relates to the technical field of an environmental protection treatment method for urban organic waste and domestic sludge, in particular to a method for synergistic treatment of municipal sludge. Background technique [0002] With the development of the economy and the improvement of people's living standards, the municipal sewage industry is also facing increasing pressure, the amount of domestic sewage is increasing, and the domestic sludge is increasing. [0003] Traditional municipal sludge treatment methods mainly include incineration, filling, land use, anaerobic digestion and other methods. The cost of using the incineration method is too high and the utilization rate of resources is low; the landfill method has gradually run out of land to fill in today's land shortage; and there are also problems such as poor paths in land use. [0004] A study in the United States in 1989 showed that for a sewage treatment plant of a certain t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/04B09B3/00B09B5/00
CPCC02F11/04B09B3/00B09B5/00
Inventor 曹波皇甫月月杨晶歆
Owner 江苏泓润生物质能科技有限公司
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