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Method for measuring humification degree of organic waste and method for applying matured compost by different quality

A technology of organic waste and decomposed compost, applied in material excitation analysis, fluorescence/phosphorescence, etc., can solve the problems of low bioavailability, reduced composting effect, and high bioavailability, avoiding blind application and improving resource utilization Efficiency and operability

Inactive Publication Date: 2017-02-22
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the degree of humification is low, the bioavailability is high, and it is suitable as a fertilizer, which is beneficial to crop growth; the degree of humification is high, the bioavailability is low, but it has a strong passivation ability against toxic pollution, and it is suitable as a soil remediation agent.
However, there is currently a lack of methods to evaluate the degree of humification of decomposed compost and to use it as a resource; therefore, organic waste is basically directly used for soil fertilization after composting, which greatly reduces the effect of composting.

Method used

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  • Method for measuring humification degree of organic waste and method for applying matured compost by different quality
  • Method for measuring humification degree of organic waste and method for applying matured compost by different quality
  • Method for measuring humification degree of organic waste and method for applying matured compost by different quality

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Experimental program
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Effect test

specific Embodiment approach 1

[0031] Specific implementation mode 1: In this implementation mode, the degree of humification of organic waste is determined according to the following steps:

[0032] 1. Extraction and separation of fulvic acid to be composted;

[0033] 2. Using a fluorescence spectrophotometer to obtain the three-dimensional fluorescence data of fulvic acid in Step 1;

[0034] 3. MATLAB programming calculates the integral ratio index of the three-dimensional fluorescence area in the visible area and the ultraviolet area (p 1,n / p 2,n ), parallel factor analysis calculates the C1%, C2%, and C3% values ​​of each component of fulvic acid;

[0035] 4. Use the projection pursuit model to calculate the projection value F, and measure the humification degree of organic waste composting;

[0036] Among them, step 4 first performs the standardization processing of projection projection data:

[0037] For positive indicators:

[0038] y'(i,j)=[y(i,j)-y min (j)] / [y max (j)-y min (j)],

[0039...

specific Embodiment approach 2

[0052] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, the method recommended by the International Humic Substance Society (IHSS) can be used to extract and separate fulvic acid. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0053] Specific implementation mode three: the method for decomposing and composting application in this implementation mode:

[0054] Use the above method to measure the projection value F of fulvic acid in the compost to be used; if the projection value is F>1.25, the decomposed compost is recommended to be used as a contaminated soil remediation agent; if the projection value is F<0.5, the decomposed compost is recommended to be used as a fertilizer; if the projection value F is between 0.5 and 1.25 Between, well-rotted compost is recommended as a degraded soil amendment.

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Abstract

The invention relates to a method for measuring the humification degree of organic waste and a method for applying matured compost by different quality. A quantitative evaluation method for the humification degree of organic waste compost is provided, so that the best utilization way of the compost is recommended according to the humification degree of the compost, and the recycling efficiency of the organic waste compost is maximized. The method for measuring the humification degree comprises steps as follows: 1, fulvic acid of to-be-utilized compost is extracted and separated; 2, 3D fluorescence data of fulvic acid in step 1 are acquired by use of a fluorescence spectrophotometer; 3, integral ratio indexes of 3D fluorescence areas of visible and ultraviolet regions are calculated through MATLAB programming, and values of components C1%, C2% and C3% of fulvic acid are calculated through parallel factor analysis; 4, the projection value F is calculated by use of a projection pursuit model. The application method comprises steps as follows: the optimum utilization modes of different composts are recommended according to the projection value F.

Description

technical field [0001] The invention relates to a method for measuring the degree of humification of organic waste and a method for applying decomposed compost. Background technique [0002] my country is the country with the largest output of rural organic waste in the world, about 4 billion tons per year. At this stage, organic waste has become an important factor affecting the ecological environment of villages and towns in my country, the appearance of villages and the health of residents. Composting is one of the important ways of sustainable utilization of organic waste. The composting process is actually the process of the formation and humification of humic acids (fulvic acid, humic acid). After the decomposed compost enters the soil, the humic acids not only improve the physical and chemical properties of the soil, biological characteristics, and provide crops with Nutrients can also restore polluted soil through coordination and complexation of toxic pollutants i...

Claims

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Application Information

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IPC IPC(8): G01N21/64
CPCG01N21/64
Inventor 魏自民赵越魏雨泉崔洪阳张旭朱龙吉刘海龙陈晓蒙
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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