Activated carbon and microorganism coupling device with function of removing pesticides in farmland return water

Abstract

The invention provides an activated carbon and microorganism coupling device with a function of removing pesticides in farmland return water. The device structurally comprises a permeable mounting tank, coarse grid interception nets, embedded filter walls and fixing piles, wherein the permeable mounting tank is provided with clamp grooves and narrow grooves, the bottom of the permeable mounting tank and two surfaces, parallel to the length direction of a farmland ditch, of the permeable mounting tank are closed by a bottom baffle plate and side surface baffle plates respectively, and the permeable mounting tank is fixed in the farmland drainage ditch through the fixing piles; the embedded filter walls are arranged in the clamp grooves; the coarse grid interception nets are inserted into the narrow grooves. The activated carbon and microorganism coupling device has the advantages as follows: 1), the permeable mounting tank is directly mounted in the farmland drainage ditch, and the problem of land occupation is solved; 2), pesticide removing efficiency is high, and water is purified thoroughly layer by layer; 3), drainage capacity of an original ditch is not influenced; 4), updating treatment and recycling are convenient; 5), the device is simple to produce, low in implementation cost and easy to maintain and manage.

Description

technical field [0001] The invention relates to an activated carbon and microorganism coupling device for removing farmland dewatering pesticides, and belongs to the technical field of farmland pesticide non-point source pollution control. Background technique [0002] With the transformation of agricultural management methods and the development of precision and intensive agriculture in recent years, the use of pesticides in the world has increased significantly, which plays an important role in preventing and controlling crop diseases and insect pests, increasing crop yields, and improving the quality of agricultural products; during the application of pesticides in the field, only 10-30% are effectively used, and more than 70% of the pesticides remain in the soil or float in the atmosphere, and enter the water environment through irrigation, rainfall, leaching, etc., seriously threatening water ecological security and human health; Retreating water from farmland is the ma...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an activated carbon and microorganism coupling device for removing farmland dewatering pesticides. The purpose of the device is to solve the problem of non-point source pollution of farmland pesticides. Water-permeable installation grooves are fixed in farmland drainage ditches and embedded filter walls are installed to flow layer by layer in farmland water. When passing through the embedded filter wall, the pesticides in the water body are adsorbed and degraded by the activated carbon-degrading bacteria coupling carrier, thereby reducing the concentration of pesticides in the farmland backwater

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