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A method for producing poultry feed additives by cultivating microalgae in sewage

A technology of feed additive and microalgae, which is applied in the field of feed production technology and sewage treatment, can solve the problems that microalgae collection has become a new problem, and the utilization of microalgae nutritional value is less researched, and achieves low toxicity, easy collection and growth A large amount of effect

Active Publication Date: 2018-06-12
青岛爱迪福生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, the use of microalgae cultivation is still in the laboratory stage, and there are few reports on the Chinese stage and industrialized large-scale cultivation. What kind of material is used to cultivate microalgae is also a hot spot in current research; the use of microalgae to treat sewage is a current research hotspot , microalgae use the organic matter in the sewage to reproduce in large quantities to achieve the purpose of sewage treatment, but the collection of microalgae has become a new problem. At the same time, there are few reports on the utilization of microalgae's own nutritional value.

Method used

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  • A method for producing poultry feed additives by cultivating microalgae in sewage
  • A method for producing poultry feed additives by cultivating microalgae in sewage
  • A method for producing poultry feed additives by cultivating microalgae in sewage

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Effect test

Embodiment 1

[0053] This embodiment is used for sewage treatment in pig farms.

[0054] The preparation and installation method of the adsorption column in this embodiment are as follows:

[0055] a. Take 80 parts of 40Kda, 30wt% polyvinylidene fluoride powder, dissolve in 25 parts of dibutyl phthalate, add 50 parts of modified chitosan powder, 50 parts of modified montmorillonite powder, 2 parts Genipin, under the protection of nitrogen, stirred in an oil bath at 210°C for 4 hours to form a homogeneous solution, then stood to defoam to obtain a polymer; the polymer was fed into a twin-screw extruder through a weight loss feeder with a measurement accuracy of 5‰ Machine, under the mixing and kneading action of 250rpm and 2MPa, the materials are fully mixed and uniformly formed into a uniform and stable casting solution. The casting solution is accurately metered into the nozzle at a speed of 90g / min through the spinning metering pump, and the inner cavity is 36ml / The nitrogen gas with a ...

Embodiment 2

[0066] This embodiment is used for domestic sewage treatment.

[0067] In this embodiment, the preparation and installation methods of the adsorption column are as follows:

[0068] a. Take 40 parts of 30Kda, 35wt% polyvinylidene fluoride powder, dissolve in 30 parts of dibutyl phthalate, add 30 parts of modified chitosan powder, 75 parts of modified montmorillonite powder, 5 parts of Beijing Nepin, under the protection of nitrogen, stir in an oil bath at 215°C for 5 hours to form a homogeneous solution, then stand to defoam to obtain a polymer; feed the polymer into a twin-screw extruder through a weight loss feeder with a measurement accuracy of 5‰ , under the mixing and kneading action of 280rpm and 4MPa, the materials are fully mixed and evenly formed into a uniform and stable casting solution. The casting solution is accurately metered into the nozzle at a speed of 100g / min through the spinning metering pump, and the inner cavity is 45ml / min Nitrogen gas at a flow rate i...

Embodiment 3

[0080] This embodiment is used for urban sewage treatment.

[0081] In this embodiment, the preparation and installation methods of the adsorption column are as follows:

[0082] a. Take 80 parts of 35Kda, 30wt% polyvinylidene fluoride powder, dissolve in 50 parts of dibutyl phthalate, add 100 parts of modified chitosan powder, 100 parts of modified montmorillonite powder, 10 parts of Beijing Nepin, under the protection of nitrogen, stir in an oil bath at 223°C for 6 hours to form a homogeneous solution, then stand to defoam to obtain a polymer; feed the polymer into a twin-screw extruder through a weight loss feeder with a measurement accuracy of 5‰ , under the mixing and kneading action of 300rpm and 5MPa, the materials are fully mixed and evenly formed into a uniform and stable casting solution. The casting solution is accurately metered into the nozzle at a speed of 100g / min through the spinning metering pump, and the inner cavity is 50ml / min Nitrogen gas at a flow rate i...

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Abstract

The invention provides a method for producing a poultry feed additive by cultivating microalgae in wastewater. By separating crude protein products and high protein products from algae, protein content in a poultry feed is higher than protein content in a conventional feed, thus providing enough protein for poultry feeding, meanwhile, the protein comes from the algae, thus reducing the usage amount of corn and soybean meal. The invention also provides a method for cultivating microalgae in wastewater. The method comprises the following steps: preparing a hollow adsorption column assembled by adsorption films by utilizing modified chitosan and modified montmorillonite to adsorb metal ions in the wastewater, enabling the wastewater to penetrate through the adsorption column by a pump negative pressure effect and stay in the adsorption column for contacting immobilized microalgae, and utilizing organic nutrients in the wastewater for growth and reproduction of the microalgae. By utilizing the method for wastewater treatment, substances such as the metal ions, carbon, nitrogen and phosphorus in the wastewater can be effectively removed, and meanwhile the microalgae can be cultivated on a large scale, so as to achieve the dual purposes of wastewater treatment and microalgae cultivation.

Description

technical field [0001] The invention belongs to the technical fields of feed production technology and sewage treatment, and in particular relates to a method for producing poultry feed additives by cultivating microalgae in sewage. Background technique [0002] Poultry feed has always been wheat, rice or rice bran, bran. General feed composition: energy feed, rice bran, soybean bran, firewood bran and bran, etc., accounting for 50-60%; vegetable protein feed, bean cake, rapeseed cake and cottonseed cake, accounting for 10-20%; poultry protein The main raw material of feed comes from food crops, which is not conducive to the long-term needs of human survival. [0003] Microalgae is a native plant with the ability of photosynthesis. Microalgae has a strong ability to reproduce and survive, and can absorb various inorganic elements and organic substances from wastewater. Microalgae contain multiple vitamins, proteins and polysaccharides. In the prior art, microalgae Algae cu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C12N11/04C12N11/10A23K10/16A23K50/75
CPCY02W10/37
Inventor 郭海涛施航
Owner 青岛爱迪福生物技术有限公司