System for in-situ removal and purification of peculiar smell of pesticide contaminated site and construction method thereof

Abstract

The invention discloses a system for in-situ removal and purification of peculiar smell of a pesticide contaminated site and a construction method of the system. The system comprises an in-situ removal module, a tail gas purification module and a tail water treatment module. The in-situ clearing module comprises an in-situ injection/extraction unit and a heating unit; the tail gas purification module comprises a leaching unit, a catalytic oxidation unit and an adsorption unit; the tail water treatment module comprises a primary treatment unit, an oxidation unit and a filtering and purifying unit. In-situ efficient decomposition/degradation of odorous substances is realized through a chemical treatment-heat treatment-extraction synergistic removal technology; meanwhile, a safe and energy-saving leaching, oxidation and adsorption tail gas purification process and an oil separation, flocculation, precipitation, neutralization, oxidation and purification tail water treatment process are coupled, and in-situ removal and purification of odorous substances in the pesticide field are realized through synergistic coupling of modules, units and technologies; the technical level of treating and repairing the peculiar smell of the pesticide field can be remarkably improved, and good market benefits and social benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of remediation of polluted sites, and particularly relates to a system for in-situ removal and purification of peculiar smell of pesticide-contaminated sites and a construction method thereof. Background technique [0002] Pesticides are the basic means of production in agriculture, and are a key factor in increasing production and income, improving the quality of agricultural products and agricultural labor productivity. According to relevant data from the United Nations, if the use of pesticides is stopped, crop yields will be reduced by 32%. Since 2006, my country has surpassed the United States to become the world's largest producer and user of pesticides. According to statistics, in 2018, the national production of chemical pesticides has reached 2.083 million tons, and there are more than 2,000 designated pesticide production enterprises. However, due to the backward production technology in the early...

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Problems solved by technology

[0008] The present invention provides a system and construction method for in-situ removal and purification of odor from pesticide-contaminated sites, which are used to so

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