Cornstalk biochar with capacity of repairing nitrogen and phosphorus non-point source pollution and repairing method

A corn stalk charcoal and corn stalk technology, which is applied in the field of corn stalk biochar and restoration, can solve problems such as pollution sources, and achieve the effects of increasing adsorption performance, repairing nitrogen and phosphorus non-point source pollution, and high-efficiency nitrogen and phosphorus non-point source pollution.

Inactive Publication Date: 2018-10-12
JILIN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a corn stalk biochar and repair method capable of repairing nitrogen and phosphorus non-point source pollution, effectiv

Method used

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  • Cornstalk biochar with capacity of repairing nitrogen and phosphorus non-point source pollution and repairing method
  • Cornstalk biochar with capacity of repairing nitrogen and phosphorus non-point source pollution and repairing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A corn stalk biochar capable of repairing nitrogen and phosphorus non-point source pollution is made of the following raw material components in parts by weight: 50 parts of corn stalk charcoal, 0.1 part of microbial agent; the microbial agent is yeast powder; the Corn stalk charcoal is made according to the following method: crush corn stalks into 1-2 cm straw fragments, add 5% mass fraction of calcium chloride solution to soak for 36 hours, filter and dry at 105°C (moisture content ≤ 10% ) straw fragments, and then carbonized to obtain corn straw charcoal. The carbonization is carried out in a tube furnace, and nitrogen gas is introduced to protect the atmosphere during carbonization. The heating rate is 25°C / min. After reaching 650°C, it is maintained for 1 hour and cooled to room temperature.

[0035] The method for remediating nitrogen and phosphorus non-point source pollution by using corn stalk biochar described in Example 1 may further comprise the steps:

[00...

Embodiment 2

[0043] A kind of corn stalk biochar capable of repairing nitrogen and phosphorus non-point source pollution, made of the following raw material components in parts by weight: 200 parts of corn stalk charcoal, 0.5 part of microbial agent; the microbial agent is a huge Bacillus powder; the corn stalk charcoal is made according to the following method: crush the corn stalks into 1-2 cm straw fragments, add 5% mass fraction of calcium chloride solution to soak for 36 hours, filter and dry at 105°C (moisture content≤10%) straw fragments, and then carbonize to obtain corn straw charcoal. The carbonization is carried out in a tube furnace, and nitrogen gas is introduced to protect the atmosphere during carbonization. The heating rate is 25°C / min. After reaching 650°C, it is maintained for 1 hour and cooled to room temperature.

[0044] The method for remediating nitrogen and phosphorus non-point source pollution by using corn stalk biochar described in Example 2 comprises the followi...

Embodiment 3

[0052] A corn stalk biochar capable of repairing nitrogen and phosphorus non-point source pollution is made of the following raw material components in parts by weight: 100 parts of corn stalk charcoal, 0.2 parts of microbial agent; the microbial agent is yeast powder and has a solution The mixture of Bacillus megaterium powder with phosphorus function in a mass ratio of 1:1; the corn stalk charcoal is made according to the following method: crush corn stalks into 1-2 cm straw fragments, add 5% mass fraction Soak in the calcium chloride solution for 48 hours, filter and dry at 105° C. (moisture content ≤ 10%) straw fragments, and then carbonize to obtain corn straw charcoal. The carbonization is carried out in a tube furnace, and nitrogen gas is introduced to protect the atmosphere during carbonization. The heating rate is 25°C / min. After reaching 650°C, it is maintained for 1 hour and cooled to room temperature.

[0053] The method for remediating nitrogen and phosphorus non-...

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Abstract

The invention belongs to the technical field of non-point source pollution repairing and particularly relates to cornstalk biochar with capacity of repairing nitrogen and phosphorus non-point source pollution and a repairing method. The cornstalk biochar is prepared from raw material components in parts by weight as follows: 50-200 parts of cornstalk charcoal and 0.1-0.5 parts of a microbial agent. The repairing method comprises steps as follows: preparation of the cornstalk biochar, application of the cornstalk biochar, crop planting and the like. The cornstalk is pretreated with a calcium chloride solution, so that the adsorptive property of the cornstalk is improved, nitrogen and phosphorus adsorbed on the stalk are subjected to concentrated treatment and degraded under the action of the microbial agent and microorganisms in soil, and the nitrogen and phosphorus non-point source pollution is efficiently repaired. According to the repairing method, the cornstalk biochar is adopted toperform partitioning interception on soil of an excrement accumulation area and farmlands surrounding the excrement accumulation area, the migration rate of nitrogen and phosphorus in the soil is reduced, and the problem of pollution is solved from the soil source.

Description

technical field [0001] The invention belongs to the technical field of non-point source pollution restoration, and in particular relates to corn stalk biochar capable of repairing nitrogen and phosphorus non-point source pollution and a restoration method. Background technique [0002] Nitrogen and phosphorus are important life elements, irreplaceable components of life support systems, and fundamental elements for sustainable agricultural development. However, it also has two sides. Excessive input of nitrogen and phosphorus fertilizers in the soil, or long-term accumulation of animal manure in farms will not only cause loss and waste of nitrogen and phosphorus elements, but also lead to soil and groundwater pollution, and even cause water quality in rivers and lakes to deteriorate. Nutritization destroys the normal growth conditions of aquatic organisms, causes fish death, and will seriously endanger human health. [0003] When the pollution point is generated, it can mig...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B09C1/00B09C1/10
CPCB01J20/20B01J2220/4825B09C1/00B09C1/10B09C2101/00
Inventor 刘淑霞王呈玉王天野高云航李桥吕雨吴含葛梦圆王晗申岳
Owner JILIN AGRICULTURAL UNIV
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