System and method for repairing organic material polluted soil

Abstract

The invention discloses a system for repairing organic material polluted soil, which comprises a chimney and a rotary kiln reactor, wherein the smoke exhaust port of the rotary kiln reactor is connected with a furnace chamber; the furnace chamber is connected with a cyclone separator; one end of the cyclone separator is connected with a preheating passage; the other end of the cyclone separator is connected with a refeeder; the refeeder is connected with the furnace chamber; the preheating passage is connected with the chimney after passing through a flue gas desulfurization denitration purifier and a bag-type dust remover; an air preheating device is arranged in the preheating passage; one end of the air preheating device is connected with a first blower; the other end of the air preheating device is connected with the rotary kiln reactor and the furnace chamber respectively; and a rotary kiln repaired soil outlet is arranged on the rotary kiln reactor. The invention further discloses a method for repairing organic material polluted soil. According to the invention, the advantages of the thermal desorption technology in the organic material polluted soil repairing process are fully played; and organic material polluted soil, which is difficult to repair, can be repaired fast through the combination of new rotary kiln thermal desorption technology and the circulatory fluidized bed incineration technology.

Description

technical field [0001] The invention relates to the technical field of soil organic matter pollution treatment, and more specifically relates to a system for remediating organic-contaminated soil, and also relates to a method for remediating soil polluted by organic pollutants, which is applicable to the remediation of soil polluted by organic matter. Background technique [0002] Soil is an important part of the human ecological environment, and it has a relatively strong sensitivity to the environment. The deterioration of the soil environment is caused by various reasons, such as the extensive use of chemical fertilizers in agriculture, the widespread use of chemical pesticides, the wanton discharge of industrial wastewater, the discharge of toxic and harmful pollutants, and the random discharge of solid waste, especially toxic and harmful solid waste. Leakage of toxic substances caused by landfill, etc. Contaminated soil will cause secondary pollution to surface water a...

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Problems solved by technology

In addition, my country has produced and widely used POPs pesticides such as DDT, hexachlorobenzene, chlordane, and mirex. Although these pesticides have been banned for many years, there are still residues in the soil.

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