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Method for biologically purifying marsh gas and recycling waste of marsh gas

A waste and recycling technology, applied in the direction of biochemical equipment and methods, methods based on microorganisms, fertilizers made from biological waste, etc., can solve problems such as being in the blank, and achieve the effects of cost saving, good economy and growth promotion

Inactive Publication Date: 2012-02-01
FUDAN UNIV
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  • Description
  • Claims
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Problems solved by technology

[0007] At present, there are many studies on mixed anaerobic fermentation and biogas purification, but the research on the organic combination of the two to form a waste resource recycling system and the realization of zero discharge of waste is basically blank

Method used

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  • Method for biologically purifying marsh gas and recycling waste of marsh gas
  • Method for biologically purifying marsh gas and recycling waste of marsh gas

Examples

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Embodiment Construction

[0027] The present invention is described in detail below by embodiment:

[0028] The photobioreactor in this example adopts a multi-stage serial plate type, and the culture medium is chlorella purchased from the Institute of Hydrophytic Botany, Chinese Academy of Sciences (Wuhan), and BG11 medium is used for expansion. The biogas and biogas slurry produced by mixed anaerobic fermentation were used as the carbon source and culture fluid of Chlorella, respectively. The specific steps are:

[0029] 1. Mixed anaerobic fermentation

[0030] After the straw is crushed, it is mixed with livestock and poultry manure, and inoculated from well-fermented biogas according to the mass ratio of 5:1.

[0031]The anaerobic activated sludge obtained in the air tank is finally added with water to adjust the solid concentration TS to 30%, and the temperature of the fermenter is maintained at 35°C.

[0032] 2. Biogas slurry to grow algae

[0033] The biogas slurry produced by anaerobic ferme...

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Abstract

The invention belongs to the technical field of recycling of resources, and in particular relates to a method for biologically purifying marsh gas and recycling waste of the marsh gas. The method comprises the following steps of: purifying carbon dioxide in the marsh gas by using a photo-bioreactor constructed by algae to obtain high-quality biomass energy methane; simultaneously, combining fermented liquid and residues which are residual after fermentation, and comprehensively recycling the algae proliferated in the photo-bioreactor to fulfill the aim of zero emission of the waste. By the method, the marsh gas has an obvious purification effect, the concentration of the methane in the marsh gas can be improved from the range of between 30 and 40 percent to 90 percent, the energy flow of solar energy from the algae to high-quality marsh gas and the matter cycle of nutrient elements such as C, N, P and the like are realized, and economic and social benefits are obvious.

Description

technical field [0001] The invention belongs to the technical field of resource recycling, and in particular relates to a method for biogas bio-purification and recycling of waste resources. Background technique [0002] The development and utilization of fossil fuels will produce many substances that are harmful to the environment. For example, carbon dioxide produced by combustion is the main greenhouse gas. Carbon particles that are harmful to human lung health. At the same time, mankind is also facing the problem of fossil fuel depletion, so people urgently need a renewable clean energy that is harmless to the natural environment and human health. [0003] Biogas is a highly practical green and environmentally friendly biomass energy, which is generally produced by mixed anaerobic fermentation and is now mainly used in rural areas. my country's biogas industry began in the 1930s, when it was mainly used for building lighting. Around the 1970s, my country began to deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P5/02C02F11/04C12N1/12C05F5/00C12R1/89
CPCY02E50/343Y02A40/20Y02E50/30Y02P20/133Y02P20/59Y02W30/40
Inventor 郑正李博颜诚聂耳王东
Owner FUDAN UNIV
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