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Processing method for biotransformation of cotton stalk high yield pulp waste liquor with bacterial N4

A biotransformation, high-yield pulp technology, applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as vegetable quality decline and nitrate accumulation

Inactive Publication Date: 2008-09-24
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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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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  • Processing method for biotransformation of cotton stalk high yield pulp waste liquor with bacterial N4
  • Processing method for biotransformation of cotton stalk high yield pulp waste liquor with bacterial N4
  • Processing method for biotransformation of cotton stalk high yield pulp waste liquor with bacterial N4

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Embodiment Construction

[0024] 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.

[0025] A method for biotransformation of cotton stalk high-yield pulp waste liquid using bacterial strain N4, the transformation steps are:

[0026] (1). Raw material waste liquid preparation:

[0027] The extruded liquid after APMP pulping with cotton stalk as the raw material for papermaking has a COD of 43,000mg / L, a pH of about 8, and a chroma of more than 30,000 times.

[0028] (2). Strain selection:

[0029] Strain N4 is a heterotrophic nitrifying bacterium obtained from the soil of the American ginseng planting base in Huairou, Beijing, after sampling, acclimation, separation, strain screening, and purification by streaking. The morphological characteristics of the N4 bacteria are listed in T...

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Abstract

The invention relates to a processing method of a cotton stalk high yield pulp waste liquor strain N4 to perform the biotransformation. Through the biotransformation method, the cotton stalk high yield pulp waste liquor which contains a mass of fibrin and many kinds of nutrient substances such as hemicelluloses with low molecular weight, formaldehyde, acetic acid, acetic acid, amylase, pectin, and albumen, etc. is used as a useful microbiology, namely, a heterotrophic nitrobacteria N4 cultured by a natural microbiological medium, so the purpose of changing waste liquor into resource is achieved, and the high yield pulp waste liquor strain N4 is used for the biological repair of the polluted soil, at last the circular economy is realized.

Description

technical field [0001] The invention belongs to the field of microorganisms in biotechnology and waste water recycling in environmental engineering, and in particular relates to a treatment method for biotransformation of cotton stalk high-yield pulp waste liquid using bacterial 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. There...

Claims

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Application Information

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IPC IPC(8): C02F3/34
Inventor 杨宗政庞金钊
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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