Plant purification method for reducing SO2 concentration in air of industrial area
A plant purification and SO2 technology, applied in chemical instruments and methods, separation methods, air quality improvement, etc., can solve problems such as environmental pollution, and achieve the effects of low operating costs, high absorption and enrichment, and low investment and maintenance costs.
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Embodiment 1
[0028] 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 foliage 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 pla...
Embodiment 2
[0030] 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...
Embodiment 3
[0032] The average content of sulfur dioxide in the atmosphere around a thermal power plant is 3.5mg / m 3 . Plant saplings of sycamore and oleander about 20-50cm high along both sides of the road at intervals of about 200cm, and transplant the seedlings of the following plants in a large area such as a dump site, including sycamore, weeping willow, oleander and Gardenia etc. Fertilize moderately every other month and water as needed. And the introduction of microbial preparations can increase the amount of symbiotic fungi in the roots of Platanus and oleander, which is beneficial to the improvement of the rhizosphere environment and the absorption and accumulation of sulfur dioxide by photosynthesis. And after 5 months, cut the branches for the first time to harvest part of the branches and leaves, and then harvest all the leaves before the leaves of the plane tree turn yellow and fall off, and cut off the large branches to promote the germination of new branches in the secon...
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