System and method for in-situ improvement of saline-alkali soil by using microalgae

A technology for improving soil and saline-alkali land, applied in microorganism-based methods, methods of supporting/immobilizing microorganisms, and land preparation methods, etc., can solve the problems of time-consuming and laborious, and the improvement effect of saline-alkali land is not obvious. The effect of transport and storage costs

Active Publication Date: 2022-05-13
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the overall idea of ​​using microalgae to improve saline-alkali land is to obtain enough cyanobacterial biomass in the excellent environment in the reactor, and then make bacterial fertilizer and put it on the farmland after harvesting. not obvious

Method used

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  • System and method for in-situ improvement of saline-alkali soil by using microalgae
  • System and method for in-situ improvement of saline-alkali soil by using microalgae
  • System and method for in-situ improvement of saline-alkali soil by using microalgae

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Embodiment 1

[0049] Improving the saline-alkali soil in a coastal area in Shandong. Specific process such as figure 1 As shown, the main part of the improved soil includes a microalgae growth chamber 1 and a screen 2; the auxiliary structure mainly includes a sewage pipeline, a roof 3 and an anti-seepage layer 5. Among them, the microalgae growth chamber is composed of saline-alkali soil; the screen 2 is laid inside the microalgae growth chamber 1, and its pore size is less than 10 μm; the lower part of the screen is the improved soil layer 3; the sewage pipeline is connected to the sewage source and the microalgae growth chamber; The top cover 4 is made of transparent material and is used to cover the top of the microalgae growth chamber 1 . Utilize the online monitoring device 5 to monitor data such as nitrogen, phosphorus, salinity, alkalinity, pH value, DO, and microalgae biomass concentration in the sewage in the microalgae growth chamber on-line in real time, and analyze the sewage ...

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Abstract

The invention discloses a system and a method for in-situ improvement of saline-alkali soil by using microalgae, which are characterized in that microalgae cell sap is inoculated into a pond, sewage is conveyed into the pond, and the concentration of each nutrient in the pond is monitored on line so as to culture the microalgae; after the microalgae culture period is finished, the screen is lifted up and fully stood, water is drained, and microalgae are intercepted on the screen; and scraping off the microalgae on the screen, and adding the microalgae into the soil to serve as a soil conditioner. Compared with traditional crops, the microalgae used for in-situ saline-alkali soil remediation is high in breeding speed, short in growth cycle and easy to manage in the planting process, and extracellular secretions can be generated in the growth process, so that organic matter in soil is increased, and the yield of saline-alkali soil is increased. Meanwhile, due to the excellent osmotic pressure and pH value adjusting capacity, the saline-alkali soil conditioner has potential in treatment and improvement of the saline-alkali soil.

Description

technical field [0001] The invention relates to the technical field of microbes, in particular to a system and method for improving saline-alkali soil in situ by using microalgae. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] At present, the overall idea of ​​using microalgae to improve saline-alkali land is to obtain enough cyanobacterial biomass in the excellent environment in the reactor, and then make bacterial fertilizer and put it on the farmland after harvesting. Not obvious. Contents of the invention [0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a system and method for improving saline-alkali soil in situ by using microalgae. [0005] In order to achieve the above object, the present invention is achieved through the following technical solutions: [0006] In a first aspect, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B77/00A01B79/00C12M1/12C12M1/34C12M1/00C12N1/20C12R1/01
CPCA01B77/00A01B79/00C12M21/02C12M23/22C12M23/38C12M41/26C12M41/32C12M41/34C12M41/36C12M47/10C12N1/20A01G33/00A01G13/0268A01G2013/006
Inventor 裴海燕于泽
Owner SHANDONG UNIV
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