Technology for preparing organic fertilizer from blue algae, reed, and paddy rice straw

A technology of rice straw and organic fertilizer, which is applied to the preparation of organic fertilizer, organic fertilizer, and the treatment of biological organic parts, which can solve the problems of polluting the environment and achieve the effect of good water absorption

Active Publication Date: 2014-10-29
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Seriously pollute the environment, in addition, there are also great potential safety hazards

Method used

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  • Technology for preparing organic fertilizer from blue algae, reed, and paddy rice straw
  • Technology for preparing organic fertilizer from blue algae, reed, and paddy rice straw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 15kg of cyanobacteria with a water content of 95% are mixed with 3kg of chicken manure for wet fermentation, and biogas slurry and biogas residue are obtained after fermentation.

[0025] Cut off the 1 / 4 stem tip of the front end of the reed, crush the rice straw and the intercepted stem tip of the reed into small pieces with an average length of 1 cm, and mix the crushed rice straw and reed at a mass ratio of 2:1 to obtain crushed material for later use. .

[0026] Take 8kg of the above pulverized material and enter the mixing device together with the biogas residue and biogas slurry obtained after the above wet fermentation. After mixing evenly, the materials enter the dry anaerobic fermentation device together. 0.72m gas was collected 3 .

[0027] The biogas residue enters the secondary fermentation device again, and is aerobic and aerobic fermented in a water bath at a constant temperature of 50°C for 25 days, and the feed is turned over every 5 days. After the pr...

Embodiment 2

[0029] Take 15kg of blue-green algae with a water content of 90% and 4kg of duck manure to carry out wet fermentation, and obtain biogas slurry and biogas residue after fermentation.

[0030] Cut off 1 / 3 of the stem tip of the front end of the reed, crush the rice straw and the cut stem tip of the reed into small pieces with an average length of 2 cm, mix the crushed rice straw and the reed at a mass ratio of 1:1 to obtain crushed material for later use .

[0031] Take 9kg of the above pulverized material and enter the mixing device together with the biogas residue and biogas slurry obtained after the above wet fermentation. After mixing evenly, the materials enter the dry anaerobic fermentation device together. Under the condition of a water bath with a constant temperature of 25°C, anaerobic dry fermentation is carried out for 25 days. Gas production of 0.68m was collected 3 .

[0032] The biogas residue enters the secondary fermentation device again, and is aerobic and ae...

Embodiment 3

[0034] 15kg of cyanobacteria with a water content of 90% are mixed with 5kg of pig manure for wet fermentation, and biogas slurry and biogas residue are obtained after fermentation.

[0035] Cut off 1 / 3 of the stem tip of the front end of the reed, crush the rice straw and the cut stem tip of the reed into small pieces with an average length of 5 cm, and mix the crushed rice straw and reed at a ratio of 3:1 to obtain crushed material for later use.

[0036] Take 10kg of the above-mentioned pulverized material and enter the mixing device together with the biogas residue and biogas slurry obtained after the above-mentioned wet fermentation. After mixing evenly, the materials enter the dry anaerobic fermentation device together. 0.65m of gas is collected 3 .

[0037] The biogas residue enters the secondary fermentation device, and is aerobic and aerobic fermented in a water bath at a constant temperature of 45°C for 25 days, and the feed is turned over every 7 days. After the pr...

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Abstract

The invention discloses a technology for preparing an organic fertilizer from blue algae, reed, and paddy rice straw. The technology comprises the following steps: (1) grinding the raw materials; (2) carrying out wet fermentation; (3) mixing; (4) carrying out primary dry anaerobic fermentation; (5) carrying out secondary fermentation; and (6) granulating the biogas residues and drying. The technology comprises the following specific steps: mixing blue algae with a water content of 90 to 95% with livestock and poultry manure according to a mass ratio of 5:(1-2) to carry out wet fermentation, fetching the stem tips of reeds, grinding, mixing the grinded reeds with grinded paddy rice straws according to a mass ratio of 1:(1:3) so as to obtain a mixed material; evenly mixing biogas slurry after the wet fermentation and biogas residues with the mixed material according to a mass ratio of (2-2.5):1, carrying out dry anaerobic fermentation for 20 to 40 d at a temperature of 25 to 55 DEG C so as to prepare a novel energy namely biogas; subjecting the biogas residues to a facultative-aerobic secondary fermentation technology, and carrying out the fermentation for 20 to 30 d at a temperature of 45 to 50 DEG C so as to obtain the organic fertilizer. The technology does not generate any secondary pollution and coverts the blue algae, reed and paddy rice straw into resources.

Description

technical field [0001] The invention relates to a process for preparing organic fertilizer, in particular to a process for preparing organic fertilizer from cyanobacteria, reed and rice straw. Background technique [0002] Cyanobacteria (Cyanobacteria), together with prokaryotic bacteria, stand alone as the kingdom of prokaryotes. All cyanobacteria contain the blue pigment of a particular type of cyanobacteria (cyanobacteria), from which the cyanobacteria get their name. With the aggravation of eutrophication in the water body in recent years, blue-green algae multiply every summer and form a layer of blue-green and foul-smelling foam on the water surface. Large-scale cyanobacteria blooms can cause deterioration of water quality, and in severe cases, deplete the oxygen in the water and cause the death of fish. What's more serious is that some species of cyanobacteria (such as Microcystis) also produce toxins (MC for short), and about 50% of cyanobacteria contain a large am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/00
CPCY02E50/30Y02W30/40
Inventor 徐炎华何若平胡俊康治金
Owner NANJING UNIV OF TECH
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