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Method for combining sludge treatment and straw treatment to produce marsh gas

A technology of sludge treatment and straw, which is applied in the direction of biological sludge treatment, biological organic part treatment, fertilizer made from biological waste, etc., can solve the problems of serious pollution, large energy consumption, etc., and achieve large vehicle transportation and storage occupation The effect of small area and high production efficiency

Inactive Publication Date: 2012-02-08
王琳
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method of combining sludge treatment and straw treatment to produce biogas, so as to solve the defects of large energy consumption and serious pollution caused by separately treating sludge and straw to produce biogas in the prior art

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  • Method for combining sludge treatment and straw treatment to produce marsh gas
  • Method for combining sludge treatment and straw treatment to produce marsh gas

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Embodiment Construction

[0018] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the equipment used in the method of the present invention has a dilution tank connected to a sludge anaerobic reactor, and the sludge anaerobic reactor is connected to a soaking tank at the same time, and the soaking tank is further connected to a straw anaerobic reactor .

[0020] Such as figure 1 Shown, a kind of combined sludge treatment and stalk treatment of the present invention are with the method for producing biogas, and its concrete steps are as follows:

[0021] Step 1: inject the sludge with 80% water content discharged from the domestic sewage treatment plant into the dilution tank and add water to dilute it to a water content of 93%-94%; warm the diluted sludge to 37°C and transfer it to the sludge drain The anaerobic reaction is carried out in the oxygen reactor, and biogas can be generated a...

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Abstract

The invention discloses a method for combining sludge treatment and straw treatment to produce marsh gas. The method comprises the following specific steps of: 1, injecting sludge with 80 percent of water which is discharged from a domestic sewage treatment plant into a diluting tank, and adding water for diluting until the water content is between 93 and 94 percent; heating the diluted sludge to a temperature of 37 DEG C, feeding the sludge into a sludge anaerobic reactor, and carrying out an anaerobic reaction; and generating the marsh gas after 20 days of anaerobic reaction period; 2, adding wheat straws and corn straws with 20 percent of water and marsh slurry generated in the sludge anaerobic reactor in a ratio of 1:15 into a soaking tank, sealing, stirring, mixing and soaking; and 3, feeding a solid-liquid mixture obtained in the step 2 into a straw anaerobic reactor at the constant temperature of 37 DEG C; and thus obtaining the marsh gas after 40 days of reaction period. By the method, secondary pollution caused by discharging the marsh slurry generated in the sludge anaerobic reaction is prevented, and waste of manually added urea is prevented. The method has the advantages of large vehicle traffic capacity, small storage and occupied area, high safety, fire prevention and high production efficiency.

Description

technical field [0001] The invention relates to a method of combining sludge treatment and straw treatment to produce biogas, especially a method of combining domestic sludge anaerobic reaction treatment and straw anaerobic reaction treatment to produce biogas, especially suitable for large-scale industrialized sludge Treatment and straw treatment biogas projects, and can be promoted and used in different regions and fields. Background technique [0002] Sludge treatment can produce biogas through anaerobic reaction. The anaerobic reaction of straw treatment has been widely used in large-scale biogas projects. [0003] In traditional biogas projects, the sludge anaerobic reaction and the straw anaerobic reaction are treated separately, and the injected water needs to be heated twice, which consumes a lot of energy. [0004] In the traditional sludge treatment process, about 57% of the biogas slurry is discharged directly, causing excessive pollution. [0005] In the tradi...

Claims

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Application Information

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IPC IPC(8): C12P5/02C02F11/04C05F5/00
CPCY02E50/343Y02A40/20Y02E50/30Y02W30/40
Inventor 王琳
Owner 王琳
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