Method for applying waste straw to organic pesticide soil pollution control

A technology for discarding straws and organic pesticides is applied in the field of organic pesticide soil pollution control to achieve the effects of easy recycling, easy separation, and prevention of groundwater pollution

Inactive Publication Date: 2016-06-29
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the problems and deficiencies existing in the conventional organic pesticide pollut...

Method used

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  • Method for applying waste straw to organic pesticide soil pollution control

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Embodiment 1

[0036] This embodiment is a method for applying rice stalks to dimethoate soil pollution control.

[0037] First, the rice straw is crushed, carbonized in a muffle furnace at 350°C for 3 hours to obtain biochar, put into a special non-woven bag, and sorted into a flat biochar bag, 50g / bag;

[0038] Put the biochar bag with a depth of 35cm and a density of 50g / square;

[0039] After 3 months, comparing the concentration of dimethoate in the soil solution, it was found that the concentration of dimethoate in the soil group added with biochar package decreased by 66-78%.

Embodiment 2

[0041] This embodiment is a method for applying corn stalks to dimethoate soil pollution control.

[0042] First, crush corn stalks, carbonize them in a muffle furnace at 300°C for 3 hours to obtain biochar, put them into special non-woven bags, and organize them into flat biochar bags, 50g / bag;

[0043] Put the biochar bag in the atrazine-contaminated soil with a depth of 45cm and a density of 50g / square, and then plant Chinese cabbage;

[0044] After 2 months, it was found that the concentration of atrazine in pakchoi in the soil group added with biochar package was 37-46% lower than that in the control group.

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Abstract

The invention discloses a method for applying waste straw to organic pesticide soil pollution control, comprising: collecting waste straw, crushing, drying, compacting, and carbonizing at 300-500°C for 2-6 hours to obtain straw biochar; Put the straw biochar into non-woven bags and linen bags, and then add it to the pesticide-contaminated soil at a depth of 20-50cm and a density of 20-50 grams per square meter. The biochar bag is taken out, and the adsorbed pesticide is extracted by an organic solvent, and the adsorbent is regenerated while transferring the pesticide in the soil. The invention solves the two major agricultural problems of agricultural waste straw treatment and soil pesticide pollution control; pollution control materials are natural, rich in content, non-toxic, low in cost, simple in operation process, remarkable in purification effect, fast in adsorption, and straw carbon After adsorbing pesticide pollution, solid-liquid is easy to separate, easy to recycle, and prevent groundwater pollution.

Description

technical field [0001] The invention belongs to the technical field of soil pollution control, and in particular relates to a method for applying waste straw to organic pesticide soil pollution control. Background technique [0002] Pesticide pollution is one of the most prominent environmental problems in my country at present. The wide application of pesticides not only brings various conveniences to human beings, but also brings huge health threats. In the process of using pesticides, a large amount of organic pesticides often enter the soil. These pesticides are not easy to degrade in the soil and can easily cause serious environmental pollution. How to safely and effectively deal with these organic pesticide wastes has become a key factor restricting the sustainable development of the environment. At present, the treatment methods of pesticide-contaminated soil are mainly divided into two categories: physical and chemical methods and biochemical methods. The physical an...

Claims

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Application Information

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IPC IPC(8): B09C1/00
CPCB09C1/00
Inventor 李云桂夏焜乔淑风刘子正
Owner SOUTHWEAT UNIV OF SCI & TECH
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