Active soil for purifying high concentration polluted air in tunnels or other local areas

A local area, air pollution technology, applied in other chemical processes, chemical instruments and methods, etc., can solve the problem of inability to achieve efficient microbial reproduction, efficient use of pollutants, inability to solve soil composition, structure and microbial reproduction, and inability to distribute gas uniformly and other problems, to achieve the effect of long soil use cycle, saving use cost and improving utilization rate

CN101693187AActive Publication Date: 2010-04-14招商局生态环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-04-14
Patent Text Reader

Abstract

The invention discloses an active soil for purifying high concentration polluted air in tunnels or other local areas. The active soil contains microorganisms used for decomposing harmful gas in tail gas and is characterized by also including topsoil, perlite, pumice, turf, muck and artificial zeolite, wherein the volume ratio of topsoil to perlite to pumice to turf to muck is 4:2:1:1:1. The soil formula can solve the contradiction between the growth and reproduction of microorganisms and the physicochemical property of soil and ensure the activity of microorganisms in soil. The proportioning of ingredients causes the soil to have good air permeability, and the polluted gas can be evenly distributed in soil, thus further ensuring the utilization rate of the polluted gas by microorganisms. With higher purification efficiency of the polluted gas, the active soil saves use cost and can eliminate or abate the pollution to the atmosphere by high concentration vehicle tail gas in tunnels to the maximum degree.
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Description

technical field

[0001] The invention relates to an environment-friendly material for purifying air, in particular to an active soil for purifying high-concentration polluted air in local areas such as tunnels. Background technique

[0002] Motor vehicle exhaust pollution is a hot issue of concern in the world today, especially in tunnels, underpasses, underground parking lots, along urban roads, toll stations and other places where vehicles are concentrated and in confined spaces. Motor vehicle exhaust is not easy to spread. , It increases the pollution of the atmosphere and seriously affects the survival and health of the human body and other organisms. In order to solve or reduce the air pollution caused by motor vehicle exhaust, forced mechanical ventilation is usually used in tunnels, underpasses, and indoor parking lots to reduce local high-concentration pollution, but harmful gases are still discharged into the atmosphere, causing air pollution. And it didn't lessen. ...

Examples

Embodiment Construction

[0009] The active soil with high concentration of polluted air in local areas such as purification tunnels in this embodiment includes topsoil, perlite, pumice, peat, humus, artificial zeolite and microorganisms for decomposing harmful gases in exhaust gas, topsoil, perlite The volume ratio of pumice, peat and humus is 4:2:1:1:1. The artificial zeolite is a separable regeneration layer arranged on the upper surface of the active soil; it is beneficial to further purify the gas. The purge layer is separated for regeneration.

[0010] When in use, NO in local high-concentration motor vehicle exhaust such as road tunnels is oxidized into NO by ozone 2 , NO 2 The water dissolved in the soil produces NO 3 - , NO 2 Water dissolved in the soil produces NO 3 - , part of which is absorbed by plants and metabolized by microorganisms in the soil, and part of which is reduced to N by denitrifying bacteria in the soil 2 .

[0011] When in use, CO in automobile exhaust can be oxidiz...