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Method for repairing nitrate polluted soil by biotransformation bacteria N4

A technology of biological transformation and polluted soil, applied in the field of agricultural biology, can solve the problems of vegetable quality decline, nitrate accumulation, etc., and achieve the effect of great scientific value and application potential

Inactive Publication Date: 2017-02-22
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Vegetables are a kind of crops that are easy to accumulate nitrates. Farmers use excessive nitrogen fertilizers in order to obtain high yields, resulting in the accumulation of nitrates and the decline of vegetable quality.

Method used

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  • Method for repairing nitrate polluted soil by biotransformation bacteria N4
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  • Method for repairing nitrate polluted soil by biotransformation bacteria N4

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0016] 1. A method for remediating nitrate-contaminated soil using biotransformation strain N4, characterized in that: the remediation method adopts an in-situ remediation method.

[0017] 2. The in-situ restoration method is to add N4 bacterial agent in the nitrate-contaminated farmland soil, river bottom mud, orchard soil, and then add N4 bacterial agent once after 30 days.

[0018] 3. The N4 microbial agent is cultivated with dried potato starch waste liquid.

[0019] The present invention is also applicable to the method of ectopic restoration, and the polluted soil is transferred to a designated treatment place, and repaired according to the above-mentioned method.

[0020] The preparation meth...

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Abstract

The invention discloses a method for repairing nitrate polluted soil by biotransformation bacteria N4. The method is an in-situ repair method, feeds N4 fungicide in nitrate polluted farmland soil, river bottom mud and fruit garden soil, and feeds the N4 fungicide again 30 days later. A N4 bacteria separation, purification and enlarge cultivation method is published in [Yang Zongzheng, Wang xin and the like; separation of heterotrophic nitrification bacteria and reinforced activated sludge denitrification effect thereof [J]; Chinese water supply and drainage, 2006, 22 (21): 67-70]; the N4 bacteria belongs to the Gram-negative bacteria, is the heterotrophic nitrification bacteria, and is cultivated by dry potato starch waste liquid; biological conversion liquid is used for biologically repairing the polluted soil to achieve the purpose of treating the pollution by wastes; and the method achieves excellent environmental benefit, social benefit and economic benefit.

Description

technical field [0001] The invention belongs to the field of agricultural biotechnology, and in particular relates to a method for repairing nitrate-contaminated soil by using biotransformation strain N4. Background technique [0002] According to reports, 81.2% of the nitrate ingested by the human body comes from vegetables. Therefore, the research on the technology of reducing the accumulation of nitrate in vegetables has become a hot spot that people pay more and more attention to. Vegetables are a kind of crops that are easy to accumulate nitrates. Farmers use excessive nitrogen fertilizers in order to obtain high yields, resulting in the accumulation of nitrates and the decline of vegetable quality. Generally, when the nitrate content in the soil is high, the nitrate content in the vegetables is also high, and vice versa, but there is no one-to-one correspondence between the two. Therefore, controlling the accumulation of nitrate in the soil is an urgent problem. Biore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10C12N1/20C12R1/01
CPCB09C1/10C12N1/20
Inventor 杨宗政张洁张孟瑶武莉娅曹井国王春虎吴志国田赛华齐赫东傅鹏肖云天冯会芳
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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