CN110639351B - Combined odor control agent for chlorine-containing pesticide contaminated site and deodorization method - Google Patents
Combined odor control agent for chlorine-containing pesticide contaminated site and deodorization method Download PDFInfo
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- CN110639351B CN110639351B CN201910931251.4A CN201910931251A CN110639351B CN 110639351 B CN110639351 B CN 110639351B CN 201910931251 A CN201910931251 A CN 201910931251A CN 110639351 B CN110639351 B CN 110639351B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
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- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Treating Waste Gases (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention discloses a combined odor control agent and a deodorization method for chlorine-containing pesticide polluted sites, wherein the combined odor control agent comprises the following components in parts by weight: agent A, agent A comprising polysorbate; the agent B comprises sodium hypochlorite and sodium permanganate; the agent C comprises chlorine dioxide and sodium hypochlorite; the deodorization method comprises the following steps: spraying the agent A and the agent B to the soil surface of the chlorine-containing pesticide polluted site, and spraying the agent C to the air; the method can quickly oxidize the highly volatile chlorine-containing organic matters on the soil surface or in the air environment, thereby achieving the purpose of eliminating the odor. Compared with the common odor inhibitor in China at present, the odor control agent has the characteristics of thoroughly eliminating chlorine-containing pollution organic matters, high oxidation degree, low price and the like, and is mainly used for eliminating odor pollution of chlorine-containing pesticide pollution sites.
Description
Technical Field
The invention relates to the technical field of odor control of polluted sites, in particular to a combined odor control agent and a deodorization method for chlorine-containing pesticide polluted sites.
Background
In the 80 s of the 20 th century, the pesticide production process in the pesticide production industry in China is more definite, the production mode is more single, and extensive production is mainly used. Meanwhile, as the production history of the pesticide production industry is long, the production conversion, combination and production expansion are carried out in the production process, chemical raw materials used in the pesticide production are various, a plurality of working sections generate wastewater with high pollutant concentration, the wastewater containing raw material residues, intermediate product wastewater and the like has large influence on the environment, and substances in pesticide polluted wastewater are complex and are difficult to degrade and migrate in the natural environment. The extensive stacking of chemical raw materials and the 'running, overflowing, dripping, leaking' of equipment and pipelines in the production process of pesticides cause pollution to horizontal and longitudinal spaces around production plants and plants.
According to investigation and statistics, when pesticide production enterprises carry out pesticide production, pesticide residues flowing into the surrounding soil environment, generated pesticide intermediates and other substances have high stability in the environment, are difficult to migrate and naturally degrade, and have obvious and lasting odor.
As early as the 80 s in the 20 th century, countries in Europe and America and the like began to use odor suppression technology to eliminate odor emitted from soil in organic pollution sites. The technology has the function of removing air odor in a short time, and is a common technology for removing soil odor.
The soil odor inhibition technology is that organic matters with strong volatility in soil are coated on the soil surface in a short time and isolated from the environment by means of spraying the odor inhibitor on the soil surface; or the strong fragrance is used for hiding the odor to control the harm of the odor to the environment, people and livestock in a short time.
Common odor inhibitors mainly comprise aromatic substances, ester substances and biological deodorization substances. Some difficulties may arise in the application process:
1. the adopted inhibitor is mostly used for deodorization by substances with strong fragrance, the principle is that the strong fragrance is used for hiding odor, the actually harmful odor is still inhaled, and when the odor is obvious due to serious site pollution, the common odor inhibitor basically plays little role and has high use cost;
2. the traditional foaming odor inhibitor forms a foam film layer on the surface of soil in the spraying process, isolates and wraps a toxic and harmful odor source, takes foam as a sealing medium, is completely isolated from air, and achieves the aim of deodorization, but the foam has short duration and cannot play a role of deodorization for a long time.
Disclosure of Invention
Aiming at the defects existing in the problems, the invention provides a combined odor control agent and a deodorization method for a chlorine-containing pesticide polluted site; the combined odor control agent is low in cost, can quickly oxidize strong volatile organic compounds on the surface of soil or in the air, eliminates the odor of a polluted site, and realizes the lasting control of the odor of the chlorine-containing pesticide polluted site.
The invention discloses a combined odor control agent for chlorine-containing pesticide contaminated sites, which comprises the following components in part by weight:
an agent A comprising polysorbate;
the agent B comprises sodium hypochlorite and sodium permanganate;
and the agent C comprises chlorine dioxide and sodium hypochlorite.
In a further improvement of the invention, the mass fraction of the polysorbate in the agent A is 0.1-0.3%.
In the agent B, the mass fraction of the sodium hypochlorite is 0.2-0.3%, and the mass fraction of the sodium permanganate is 0.5-0.8%.
In a further improvement of the invention, in the agent C, the mass fraction of chlorine dioxide is 0.7-1%, and the mass fraction of sodium hypochlorite is 0.3-0.5%.
As a further improvement of the invention, the agent A and the agent B are sprayed on the soil surface, and the agent C is sprayed in the air.
The invention also discloses a deodorization method of the combined odor control agent, which comprises the following steps:
step 1, spraying an agent A on the soil surface of a chlorine-containing pesticide polluted site;
step 2, spraying the agent B on the soil surface of the chlorine-containing pesticide polluted site;
and 3, spraying the agent C into the air.
As a further improvement of the invention, in step 1, the agent A is uniformly sprayed to form a 1mm thick wet layer.
As a further improvement of the invention, in step 2, after spraying the agent A, the agent B is uniformly sprayed after waiting for 20min to form a wetting layer with the thickness of 3 mm.
As a further improvement of the invention, in the step 3, the dosage of the C agent is 0.5-1L/min.
As a further improvement of the invention, the chlorine-containing pesticide polluted site comprises the following pollutants: chlorophenol, chlorobenzene, phenol, benzo [ a ] pyrene, hexachloro.
Compared with the prior art, the invention has the beneficial effects that:
1. the combined odor control agent can be subjected to oxidation reaction with odor-containing polluted organic matters, has an obvious deodorization effect on sites polluted by chlorine-containing pesticides, and does not cause secondary pollution;
2. the combined odor control agent has the advantages of small addition proportion, low implementation cost and obvious economic benefit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below:
the invention provides a combined odor control agent for chlorine-containing pesticide contaminated sites, which is an available industrial chemical agent and comprises the following components: agent A, agent B and agent C;
the agent A comprises polysorbate which is used as a dissolving agent and is beneficial to the precipitation of organic matters on the surface of soil; wherein, in the agent A, the mass fraction of the polysorbate is 0.1-0.3%.
The agent B comprises sodium hypochlorite and sodium permanganate, and the sodium hypochlorite and the sodium permanganate can quickly oxidize and degrade the highly volatile chlorine-containing organic matters on the surface of the soil to eliminate odor; wherein, in the agent B, the mass fraction of the sodium hypochlorite is 0.2-0.3%, and the mass fraction of the sodium permanganate is 0.5-0.8%.
The agent C comprises chlorine dioxide and sodium hypochlorite, and the chlorine dioxide and the sodium hypochlorite can quickly oxidize and degrade the highly volatile chlorine-containing organic matters in the air to eliminate odor; wherein, in the agent C, the mass fraction of chlorine dioxide is 0.7-1%, and the mass fraction of sodium hypochlorite is 0.3-0.5%.
Further, the agent A and the agent B of the present invention are used for spraying on the soil surface, and the agent C is used for spraying in the air.
The invention provides a deodorization method of the combined odor control agent, which comprises the following steps:
step 1, uniformly spraying an agent A on the surface of soil in a chlorine-containing pesticide polluted site to form a wet layer with the thickness of 1 mm;
step 2, after waiting for 20min, spraying the agent B on the soil surface of the chlorine-containing pesticide contaminated site in the step 1 to form a wet layer with the thickness of 3 mm;
and 3, spraying a C agent into the air, wherein the dosage of the C agent is 0.5-1L/min.
Further, the chlorine-containing pesticide polluted site comprises the following pollutants: chlorophenol, chlorobenzene, phenol, benzo [ a ] pyrene, hexachloro-cyclohexane, and the like.
Furthermore, the agent A, the agent B and the agent C are used in combination in sites polluted by chlorine-containing pesticides, and the agent C is used in other sites with odor.
Example 1
A pesticide factory of a pesticide cleaner in Nanjing city adopts dichlorophenol, trichlorophenol and the like as raw materials to produce pesticides, the soil in the field is polluted by chlorine-containing intermediate products and waste raw materials in the pesticide production process due to crude production, and the soil has large odor and is long-lasting.
The implementation is as follows:
firstly, preparing an agent A, preparing a solution with the mass fraction of 0.3% by using polysorbate, spraying the solution on the soil surface, uniformly spraying the solution on the soil surface to form a wetting layer with the thickness of 1mm, and maintaining for 20 min;
preparing the agent B, wherein the mass fraction of the sodium hypochlorite is 0.2%, the mass fraction of the sodium permanganate is 0.8%, continuously spraying the agent B on the soil surface obtained in the step 1), and uniformly spraying the agent B on the soil surface to form a wetting layer with the thickness of 3 mm.
And (3) preparing the agent C, wherein the mass fraction of chlorine dioxide is 0.7 percent, the mass fraction of sodium hypochlorite is 0.3 percent, and the agent C is sprayed into the air with the dosage of 0.8L/min.
The results show that the odor in the field is effectively controlled for a long time.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A deodorization method of a combined odor control agent for chlorine-containing pesticide contaminated sites is characterized in that,
the combination odor management agent comprises:
an agent A comprising polysorbate;
the agent B comprises sodium hypochlorite and sodium permanganate;
an agent C comprising chlorine dioxide and sodium hypochlorite;
the deodorization method comprises the following steps:
step 1, uniformly spraying an agent A on the surface of soil in a chlorine-containing pesticide polluted site to form a wet layer with the thickness of 1 mm;
step 2, after spraying the agent A, waiting for 20min, and uniformly spraying the agent B on the soil surface of the chlorine-containing pesticide contaminated site to form a wet layer with the thickness of 3 mm;
and 3, spraying the agent C into the air.
2. The deodorizing method according to claim 1, wherein the mass fraction of polysorbate in the agent A is 0.1 to 0.3%.
3. The deodorizing method according to claim 1, wherein the agent B comprises 0.2 to 0.3% by mass of sodium hypochlorite and 0.5 to 0.8% by mass of sodium permanganate.
4. The deodorization method according to claim 1, wherein the mass fraction of the chlorine dioxide in the agent C is 0.7% to 1%, and the mass fraction of the sodium hypochlorite is 0.3% to 0.5%.
5. The deodorizing method according to claim 1, wherein said agent A and said agent B are sprayed on the soil surface, and said agent C is sprayed in the air.
6. The deodorization method according to claim 1, wherein the C agent is used in an amount of 0.5 to 1L/min in step 3.
7. The method of claim 1, wherein the site contaminated with chlorine-containing pesticides comprises the following contaminants: chlorophenol, chlorobenzene, phenol, benzo [ a ] pyrene, hexachloro.
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| CN201910931251.4A CN110639351B (en) | 2019-09-29 | 2019-09-29 | Combined odor control agent for chlorine-containing pesticide contaminated site and deodorization method |
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| CN201910931251.4A CN110639351B (en) | 2019-09-29 | 2019-09-29 | Combined odor control agent for chlorine-containing pesticide contaminated site and deodorization method |
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| CN110639351B true CN110639351B (en) | 2021-07-30 |
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| CN113856452A (en) * | 2021-09-03 | 2021-12-31 | 煜环环境科技有限公司 | Odor inhibitor for polluted soil and preparation method and application thereof |
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