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Fermentation method for changing methane into resource by using water hyacinth and application of product produced thereby

A fermentation method and technology of water hyacinth, which are applied in the directions of fermentation, climate change adaptation, application, etc., can solve the problems of water hyacinth affecting the ecological environment, etc., and achieve the promotion of green food production and sustainable agricultural development, stable gas supply, and gas production. high rate effect

Inactive Publication Date: 2008-10-01
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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AI Technical Summary

Problems solved by technology

[0006] Technical Problem The purpose of the present invention is to provide a biogas solution for the problems that the eutrophication of water bodies such as lakes, reservoirs, rivers and ponds leads to the mass reproduction of water hyacinth and the salvage of artificially planted water hyacinth in the process of lake governance, which seriously affects the ecological environment. Fermentation Energy Utilization Water Hyacinth Resource and Its Residue, Biogas Slurry, Biogas Residue Comprehensive Utilization Technology

Method used

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Embodiment 1

[0019] Carry out biogas fermentation directly after the water hyacinth of the present embodiment is pulverized, and its steps are as follows:

[0020] A. material preparation, pre-treatment of feeding——adopt pulverizing and beating method to crush water hyacinth into paste; adopt high-temperature composting method (control pH at 5.7) in acidification pool (cement pool built according to production scale, upper cover red mud plastic About, can not exceed 6.0 at most, Eh is -240mV, temperature 50 ℃ -60 ℃) acidification; use lime water to adjust the pH value to 6.8 ~ 7.5; for water hyacinth fermentation efficiency, water hyacinth and blue-green algae, poultry manure, straw C / N is adjusted to a suitable carbon-nitrogen ratio of 20-30:1.

[0021] B. Microbial inoculation—Using anaerobic activated sludge (using sewage treatment plant nitrification tank sludge, TS content of 1-2%) or using biogas slurry to inoculate new feed liquid with microorganisms, the inoculation ratio reaches t...

Embodiment 2

[0028] In this embodiment, water hyacinth juice is used for biogas fermentation, and water hyacinth residue can be used as compost material, green storage feed, etc., and the steps are as follows:

[0029] A. Crush the water hyacinth into a paste by crushing and beating; separate the juice and slag; acidify the juice in the acidification tank by high-temperature composting; adjust the pH value to 6.8-7.5 with lime water; adjust the C / N to 20- 30:1.

[0030] B. Microbial inoculation - use the existing biogas slurry to inoculate the new feed liquid with microorganisms, the inoculation ratio reaches 10-30% of the total fermentation feed liquid, including the first type of fermentation bacteria, which can decompose complex organic matter into simpler For example, polysaccharides are converted into monosaccharides, proteins are converted into peptides or amino acids, and fats are converted into glycerol and fatty acids; the second type of hydrogen-producing acetogenic bacteria furt...

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Abstract

The present invention provides an energy regeneration fermentation method of water hyacinth biogas and its product utilization, belonging to environmental protection and new energy technical field. The method includes: water hyacinth biogas is directly fermented after grinded, or water hyacinth liquid is fermented, pH is adjusted to 6-8; the adjustment of C / N is 20-30:1, microbial inoculation is processed by anaerobic activated sludge and established biogas slurry, the inoculation amount is 10-40%; the temperatures are set 20-40 DEG C in winter, 40-55 EDG C in summer; the broth is extracted from the bottom of the fermentor by a water pump, then the fermenting material is sprayed from the top of the fermentor, and evenly distributed by mechanical stirring. The biogas of the invention has 70% methane average content, much more than common material, and having large gas produce, stable supply quantum, large gas production rate, the slag is fully utilized. The technology not only resolves problem of environmental pollution caused by water hyacinth, but also providing cleaning energy and good quality fertilizer, feed, fit for treatment and ecological restoration of eutrophic lake and other waters.

Description

technical field [0001] The invention relates to a fermentation method and a product thereof, which belong to the technical field of environmental protection and new energy, and are specially used for fermenting water hyacinth in eutrophic water body into biogas energy and comprehensive utilization of biogas, biogas slurry and biogas residue. Background technique [0002] Source control, sewage interception, drainage, dredging, and restoration are the policies and strategies for lake management. Therefore, to eradicate eutrophic lakes, we must try to speed up the removal of nitrogen and phosphorus from the water body of Taihu Lake. The scientific name of water hyacinth is water hyacinth (Eichhornia crassipes), and its ability to absorb dirt is the strongest among all aquatic plants. Under suitable conditions, one hectare of water hyacinth can absorb the nitrogen and phosphorus elements discharged by 800 people in one day, and water hyacinth can also remove heavy metals such a...

Claims

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Application Information

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IPC IPC(8): C12P5/02C05F5/00C05F17/00A23K1/00A23K10/12
CPCY02E50/343Y02A40/20Y02E50/30Y02W30/40
Inventor 韩士群严少华刘海琴张建秋宋伟黄建萍
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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