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Method for reducing concentration of SO2 in air

A concentration and air technology, applied in the field of reducing the concentration of SO2 in the air, can solve problems such as environmental pollution, and achieve the effects of low operating costs, low investment and maintenance costs, and low engineering investment.

Inactive Publication Date: 2017-03-22
吴福勤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, sulfur dioxide will be released in the process of non-ferrous metal dressing and smelting, causing environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The concentration of sulfur dioxide in the atmosphere around a smelter ranges from 0.2 to 3 mg / m 3 about. Plant oleander and sycamore in rows around the factory area as street trees. Auxiliary watering foliar fertilizer, its main component is a liquid fertilizer composed of ammonium bicarbonate and potassium dihydrogen phosphate mixed with water, which can promote its survival, strengthen photosynthesis, and increase plant biomass by prolonging the life of leaves. Harvest the leaves that fall off naturally at any time, and harvest them at one time after the leaves fall in autumn. After analysis and determination, the range of sulfur dioxide concentration in the atmosphere is reduced to 0.1-1.3mg / m 3 , while the atmospheric sulfur dioxide concentration in the adjacent area without plants is still 0.2-2.6mg / m 3 , which is equivalent to reducing the sulfur dioxide content in the atmosphere by 50%. In addition, the sulfur content in the body of oleander and sycamore plan...

Embodiment 2

[0019] The annual average concentration of sulfur dioxide in the atmosphere around a smelter is 2mg / m 3 about. Gardenia shrubs and grasses are planted in large open spaces in and around the factory area, and oleander, sycamore and weeping willow are interspersed with each other. During the planting period, loosen and plow the substrate every half a month, and properly introduce animals such as earthworms to loosen the substrate. Followed by spraying and watering to wash the excessive dust on the surface of the leaves to increase the photosynthesis of plants and the ability to absorb sulfur dioxide. In addition, increase the aeration and water permeability of the soil, increase the redox potential of the soil, so as to promote the sulfur dioxide dust to form sulfate in the soil and move to the soil solution, and accelerate the absorption and accumulation of sulfur by plants. Sulfides will become unstable and easily oxidized, which is conducive to the uptake of sulfate by plan...

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Abstract

The invention discloses a method for reducing concentration of SO2 in air. The method comprises process steps as follows: one or a combination of oleanders, plane trees and weeping willows are planted in a plant or the surrounding areas at the interval of 150-200 cm to serve as a street tree variety, alfalfa, gardenia and roses are planted in a large space area to form lawns or combined to be planted on a large scale to form lawns, matched with oleanders, plane trees and weeping willows in an alternatively and matched with small trees sporadically, matrix is loosened and ploughed once every half a month during planting, earthworms and other animals are properly introduced for loosening the matrix, dust on leaves of planted plants is washed through spraying, addition of biological growth accelerators or inoculation of part of mycorrhiza organisms are performed, auxiliary watering of foliar microelement fertilizer is realized, and naturally falling leaves are harvested at any time. The method has the characteristics that secondary pollution is not caused to the environment, the absorption and enrichment amount of sulfur dioxide is high, water loss and soil erosion are prevented, the environment is beautified and the like.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a method for reducing SO in the air 2 method of concentration. Background technique [0002] The pollution of flue gas with low concentration of sulfur dioxide is a worldwide problem. Predecessors have done a lot of work and proposed many governance SO 2 However, these methods have the problems of large investment, high consumption of raw materials, high operating costs, and uneconomical costs. Our country is rich in mineral resources, and the sulfide content in many mineral resources is relatively high, so there will be a large amount of SO in the process of dressing and smelting. 2 emission. [0003] At present, sulfur dioxide will be released in the process of non-ferrous metal dressing and smelting, causing environmental pollution. Therefore, choosing an economical and effective method to remove sulfur dioxide or recycle it is a research hotspot and difficulty at ...

Claims

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Application Information

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IPC IPC(8): B01D53/84B01D53/50
CPCB01D53/50B01D53/84B01D2258/06Y02A50/20
Inventor 吴福勤
Owner 吴福勤
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