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

A coupling device and activated carbon technology are applied in the field of farmland pesticide non-point source pollution control, which can solve the problems of reducing the concentration of farmland backwater pesticides and farmland pesticide non-point source pollution, and achieve low implementation costs, easy maintenance and management, and high pesticide removal efficiency. Effect

Active Publication Date: 2017-09-19
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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preparation example Construction

[0025] The preparation of the activated carbon-microbe coupling carrier 11: firstly obtain the indigenous pesticide-degrading bacteria in the farmland through domestication and screening, inoculate the pesticide-degrading bacteria into the liquid medium for expanded cultivation, and put the activated carbon particles into the bacterial liquid for co-cultivation with the pesticide-degrading bacteria , the activated carbon-microorganism coupling carrier 11 can be obtained.

[0026] When using an activated carbon and microbial coupling device for removing pesticides in farmland dewatering, first insert the coarse grid interception net 8 into the front section of the permeable installation groove 1 or the narrow groove 9 at the end according to the direction of water flow, and then insert several embedded filter walls 3 respectively Correspondingly inserted into the card slot 2 of the permeable installation slot 1, the number and spacing of the insertion are determined according to...

Embodiment

[0033] An activated carbon and microorganism coupling device for removing the pesticide chlorpyrifos in the farmland backwater. The narrow groove 9, the bottom of the permeable installation groove 1 and the two sides of the permeable installation groove 1 parallel to the length direction of the farmland ditch are respectively closed by a PVC plastic bottom baffle 10 and a PVC plastic side baffle 5, and the permeable installation groove 1 is fixed on the In the farmland drainage ditch; the card slot 2 has an embedded filter wall 3; the narrow slot 9 is inserted with a coarse grid interception net 8.

[0034] The permeable installation groove 1 is 80 cm long x 80 cm wide x 60 cm high, and is welded by angle steel; the upper and lower four angle steels parallel to the drainage ditch cut out a narrow groove with a width of 0.8 cm at a position 2 cm away from the front end and the rear end 9. Cut a card slot 2 with a width of 3.5 cm every 15 cm in the middle position, and cut out a...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
CPCC02F1/281C02F3/34C02F2203/006C02F2305/06C02F1/283C02F3/10C02F3/101C02F3/06
Inventor 陈娟王沛芳王超钱进高寒
Owner HOHAI UNIV
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