A kind of multiple reactor for removing tebuconazole in water and its system and method

Abstract

The invention discloses a compound reactor for removing tebuconazole in water, a system and a method thereof, and belongs to the field of water treatment. The water sample containing tebuconazole enters the interlayer of the compound reactor through the water inlet, and then enters the inner layer of the compound reactor through the water distributor. The tebuconazole in the water is adsorbed and removed by the resin loaded with microorganisms in the inner layer, and the concentration of tebuconazole in the adsorbed water is low. The limit value of the national pesticide wastewater discharge standard. The microorganisms loaded on the resin degrade the tebuconazole adsorbed on the resin using the organic carbon in the water as the carbon source. The system and method not only overcome the disadvantages of poor water quality fluctuation and long degradation time of the traditional microbial degradation method, but also solve the problem of in-situ regeneration of saturated resin in the resin adsorption method, and effectively overcome the desorption and regeneration process of the resin. Attached liquid is easy to cause the problem of secondary pollution.

Description

technical field [0001] The invention discloses a system and method for removing tebuconazole in water, more specifically a compound reactor for removing tebuconazole in water and its system and method, that is, a resin and compound reactor loaded with microorganisms An integrated system and method for removing tebuconazole from water. Background technique [0002] Pesticides play an extremely important role in controlling crop pests and diseases and increasing crop yields. However, with the increasing dependence of agricultural production on pesticides, the pollution of soil and water by pesticides is also becoming more and more serious. Usually, only less than 0.3% of the dose of pesticides applied to crops effectively acts on pests, and the remaining 99.7% of pesticides remain on the surface of crops and in the soil and water in the natural environment, and eventually enter rivers, rivers, and rivers with rainfall and irrigation water. Potential health hazards to humans a...

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Problems solved by technology

Usually, only less than 0.3% of the dose of pesticides applied to crops effectively acts on pests, and the remaining 99.7% of pesticides remain on the surface of crops and in the soil and water in the natural environment, and eventually enter rivers, rivers, and rivers with rainfall and irrigation water. Potential health hazard to humans and other aquatic life in lakes and groundwater

Therefore, domestic research on the application of biodegradation technology to remove tebuconazole in water has not been reported yet.

[0004] The second type is mainly based on the adsorption method, which separates tebuconazole from the water body without changing its chemical structure. Although the adsorption method is the most commonly used and relatively high-efficiency treatment method in laboratories or industrial production, this The biggest defect of this physical treatment method is that the adsorbed material after adsorption needs to be desorbed and regenerated, so the generated desorbed liquid needs to be effectively disposed of, otherwise it will cause secondary pollution.

At present, the research of adsorption method mainly focuses on the adsorption of tebuconazole by activated carbon, but the research on the removal of tebuconazole in wastewater by resin adsorption technology has not been reported yet.

[0005] The third category is to use chemical agent to oxidize tebuconazole. At present, this method has been reported in a patent (a method for utilizing immobilized microorganisms to treat organophosphorus pesticide wastewater, publication number: CN103102015A), but this method needs to be used in the process of use. Dosing a variety of agents is complex and costly, and is not an efficient and economical method, especially for the removal of low-concentration tebuconazole, which may cause deterioration of water quality and biological toxicity due to the addition of excess agents Increase

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