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A filter and purification device for farmland first-stage backwater water quality

A purification device and farmland drainage technology, applied in the field of farmland non-point source pollution control, to achieve the effect of convenient replacement and renewal, ensuring durability and high efficiency, and small footprint

Active Publication Date: 2021-03-02
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a first-stage receding water quality percolation and purification device for farmland. The purpose of the device is to solve the pollution problem of the first-stage receding water in farmland by installing a percolation and purification device at the first-stage drain to construct an ecologically clean sewage drain. Utilize the photocatalytic performance of the nanocomposite material filled in the device to efficiently remove nitrogen, phosphorus, pesticides and other pollutants in the first stage of the farmland backwater

Method used

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  • A filter and purification device for farmland first-stage backwater water quality
  • A filter and purification device for farmland first-stage backwater water quality
  • A filter and purification device for farmland first-stage backwater water quality

Examples

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preparation example Construction

[0030]The preparation method of the nano-composite material 6 is preferably the dipping-lifting method, the nano-photocatalyst is preferably nano-titanium dioxide, the carrier material can be porous ceramsite, porous glass ball, glass fiber, etc. The preparation steps of the nano-composite material 6 include:

[0031](1) The photocatalyst sol is prepared by the sol-gel method: the method is the same as the method of the nano purification net 4, and will not be repeated here.

[0032](2) Nano photocatalyst-carrier loading, specifically, using crucible tongs or other tools that can play a role of blessing to fix the filter containing the carrier material, and immerse it in anatase nano-TiO2After 5 minutes in the loading solution, the surface of the liquid is put to rest for 15 minutes, repeated 4 to 5 times, and then rinsed with pure water for 10 minutes to remove the anatase type nano TiO that is not tightly attached2; Dry at room temperature for 24 hours and then roast at high temperature...

Embodiment

[0039]A first-stage return water percolation purification device for farmland, which structure includes a fixed support 1, a percolation purification box 2, a drainage baffle 3, a nano purification net 4, a water blocking block 5, a nano composite material 6, and a fixed bottom plate 10; Among them, the fixed bracket 1 is fixedly installed at the farmland drainage outlet, and there are three rows of grooves corresponding to the two sides of the bracket, which are the purification net installation groove 7, the baffle installation groove 8 and the purification tank installation groove 9. 4. Drainage baffle 3 and percolation purification tank 2, during installation, ensure that the purification net installation slot 7 is on the side of the farmland drainage water; in the non-drainage period of the farmland, insert the drainage baffle 3, and the water pollutants near the drain can be purified by nanometer The net 4 is degraded and removed; when the farmland is drained, the drainage baf...

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Abstract

The present invention is a first-stage receding water quality percolation and purification device for farmland, the structure of which includes a fixed support, a percolation purification box, a drainage baffle, a nano purification net, a water blocking block, a nanocomposite material, and a fixed bottom plate; wherein, the fixed support It is fixedly installed at the drainage outlet of the farmland. There are three rows of grooves corresponding to the two sides of the bracket, which are respectively the purification net installation groove, the baffle installation groove and the purification box installation groove. The nano purification net, the drainage baffle and the percolation purification are installed in sequence When installing, ensure that the installation groove of the purification net is on the side of the farmland drainage and water supply; during the non-drainage period of the farmland, insert the drainage baffle, and the water body pollutants near the outlet can be degraded and removed by the nano purification net; when the farmland is draining, remove the drainage baffle According to the requirements of the field water level, a water-blocking block is installed in the installation tank of the purification box, and then several infiltration purification boxes are stacked to form a row of infiltration walls; the infiltration purification box is openable, which is convenient for the renewal of nano-composite materials Recycle.

Description

Technical field[0001]The invention relates to a farmland first-stage return water quality percolation purification device, which belongs to the technical field of farmland non-point source pollution control.Background technique[0002]Under the agricultural development model centered on "increasing production and income", a large number of pesticides and fertilizers are used in agricultural production in my country. Generally, only 10%-20% of the pesticides sprayed are attached to the crops, while the absorption rate of the applied fertilizers is only 30%. %about. For those chemical fertilizers and pesticides that are not used by crops, a considerable part of them flows into the surface water body with the return of water from the irrigated farmland or the runoff after the rain, which has become the main reason for the deterioration of the water quality of rivers and lakes.[0003]The concentration of pollutants in the first-level drainage ditch of farmland is high. The first-level puri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/08
CPCC02F1/001C02F1/30C02F2103/001C02F2201/002C02F2301/08C02F2303/14C02F2305/10
Inventor 陈娟王沛芳王超孙胜浩
Owner HOHAI UNIV
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