Biological method for producing hydrogen by mixing sludge and organic garbage

A technology of organic waste and biological hydrogen production, which is applied in gas production bioreactors, fermentation and other directions, can solve problems such as energy shortage, increase in sludge and organic waste production, achieve considerable environmental and economic benefits, and achieve reduction in weight the effect of

Inactive Publication Date: 2008-05-28
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for biological hydrogen production by mixing sludge and organic waste

Method used

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  • Biological method for producing hydrogen by mixing sludge and organic garbage
  • Biological method for producing hydrogen by mixing sludge and organic garbage

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Experimental program
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Example Embodiment

[0018] Example 1:

[0019] The test device used in the present invention is shown in FIG. 1 . The biological hydrogen production reaction device mainly includes a constant temperature water bath 1 , a reactor 2 , a gas measuring pipe 4 and a balance bottle 6 . The reactor 2 is placed in the constant temperature water bath 1, the outlet of the reactor is connected with one end of the trachea 3, the other end of the trachea 3 is connected with the trachea 4, and the trachea 4 passes through the trachea with the balance placed on the iron frame 5. Bottle 6 is connected.

[0020] When preparing hydrogen, the experimental sludge was taken from the sludge dewatering workshop of a city sewage treatment plant in Guangdong. According to the percentage of types, its main physical and chemical properties are as follows: moisture content 74.74%, volatile solid content 64.88% (the moisture content of the sludge is The sludge was dried at 105°C, and it was obtained by calculating the ratio...

Example Embodiment

[0021] Example 2

[0022] The test sludge was taken from the sludge dewatering workshop of a city sewage treatment plant in Guangdong. According to the percentage of types, its main physical and chemical properties are as follows: moisture content of 73.56%, volatile solid content of 63.61%, organic waste taken from a campus vegetable market in Guangdong, Its main features are as follows: the moisture content is 89.20%, and the volatile solid content is 75.22%. Mix the sludge and organic garbage evenly at a mass ratio of 0.5:1, then add distilled water to dissolve the sludge and organic garbage mixture and adjust its concentration to 40g / L. As shown in Figure 3, the biohydrogen system started to produce hydrogen from the incubation time of 6 hours, and the cumulative hydrogen production reached the maximum at 24 hours, which was 41.8 mL.

Example Embodiment

[0023] Example 3

[0024] The test sludge was taken from the sludge dewatering workshop of a paper mill in Guangdong. According to the percentage of types, its main physical and chemical properties are as follows: moisture content of 72.42%, volatile solid content of 62.57%, organic waste taken from a campus restaurant in Guangdong, and its main characteristics As follows: moisture content 88.31%, volatile solid content 74.58%. Mix the sludge and organic garbage evenly at a mass ratio of 1.5:1, then add distilled water to dissolve the sludge and organic garbage mixture and adjust its concentration to 30g / L. As shown in Fig. 3, the biohydrogen system started to produce hydrogen gas from the incubation time of 12 hours. And the cumulative hydrogen production reached the maximum at 48 hours, which was 19.1 mL. It shows that in the anaerobic environment, the anaerobic biological hydrogen production reactor can successfully realize the mixed fermentation of sludge and organic was...

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Abstract

The invention discloses a biological process for producing hydrogen by the mixed sludge and organic refuse. With the process, the sludge which contains nutrient elements of nitrogen, phosphorus, potassium and the like and the organic refuse are evenly mixed according the proportion of 0.5-1.5: 1 (w/w), and nutrient solution which contains trace elements, including Ca, Mg, Zn and Fe, which are the essential elements for the growth of anaerobe at the volumetric ratio of 30-40: 1 of the mixed sludge and organic refuse to substrate, and then the mixed material is introduced to an enclosure mixing hydrogen production device, the carbohydrate in the mixing material is decomposed to be H2, low molecular organic acids and alcohol materials by the anaerobe existed in the mixed material, and the temperature for the fermentation of the anaerobe is controlled to be 37+- 1 DEG C. The invention can successfully realize the bio-hydrogen production under the strictly anaerobic environment and has important engineering value.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to a method for biological hydrogen production, in particular to a method for biological hydrogen production by mixing sludge and organic waste. Background technique [0002] The research on modern biohydrogen production technology began when the energy crisis occurred in the 1970s. In the 1990s, because of the further understanding of the greenhouse effect, biohydrogen production as a sustainable industrial technology was put on the research and application agenda again. According to the different microorganisms that play a role in the hydrogen production process, biological hydrogen production can be divided into photobiological hydrogen production and anaerobic fermentation biological hydrogen production. The research on biological hydrogen production by anaerobic fermentation began in the mid-1990s, but due to the small number of institutions participating in the r...

Claims

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Application Information

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IPC IPC(8): C12P3/00C12M1/107
CPCC12P5/023C12P3/00
Inventor 周少奇陆伟东
Owner SOUTH CHINA UNIV OF TECH
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