Electrode biofilm device for in-situ nitrogen and phosphorus removal in farmland ditches and its application method

A technology for denitrification, phosphorus removal and biofilm, which is applied in the field of agricultural non-point source pollution control, can solve the problems of slow treatment speed and limited ability to deal with pollutants, and achieves the effect of simple structure, stable effect and satisfying water effluent demand.

Active Publication Date: 2020-09-04
ZHEJIANG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide an electrode biofilm device for in-situ denitrification and phosphorus removal in farmland ditches, aiming at the shortcomings of the existing farmland ecological ditches, such as limited pollutant treatment capacity and slow processing speed, without affecting the normal drainage and irrigation of the ditches. and how to use it

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  • Electrode biofilm device for in-situ nitrogen and phosphorus removal in farmland ditches and its application method
  • Electrode biofilm device for in-situ nitrogen and phosphorus removal in farmland ditches and its application method
  • Electrode biofilm device for in-situ nitrogen and phosphorus removal in farmland ditches and its application method

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[0038] The present invention will be further elaborated and illustrated below in conjunction with the accompanying drawings and specific embodiments. The technical features of the various implementations in the present invention can be combined accordingly on the premise that there is no conflict with each other.

[0039] Such as figure 1 and 2 As shown, an electrode biofilm device for in-situ denitrification and phosphorus removal in farmland ditches includes a grid 1, a rotating bioelectrode turntable 2 and an electrode area; the electrode biofilm device is installed in a farmland ditch that needs to treat farmland drainage, The bottom of the device is flush with the bottom of the canal where it is located, both sides are fitted with the canal wall, and the top is level with the top of the canal, without occupying any extra space; the water flow in the ditch enters from the front entrance of the device, and passes through the grille 1, rotating biological The electrode car...

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Abstract

The invention discloses an electrode biological membrane device for in-situ nitrogen and phosphorus removal of a farmland ditch, and a use method thereof, and belongs to the technical field of non-point source pollution control and water pollution treatment. The device comprises a grid, a rotary bioelectrode rotation disc and an electrode area, wherein the electrode biological membrane device is installed in a farmland ditch, and the water flow in the ditch enters from a device inlet, sequentially passes through the grid, the rotary bioelectrode rotation disc and the electrode area, and is discharged from a device outlet. According to the invention, the device is stable, simple and convenient, and can be assembled and disassembled according to field conditions; microorganisms are fixed onthe surface of the electrode, and domestication is carried out in the ditch tail water by applying a certain voltage, so that the stable operation conditions are achieved, and the in-situ synchronousdegradation of main pollutants such as organic matters, sediments, TN, TP, ammonia nitrogen, nitrate nitrogen, phosphate and the like in the farmland ditch tail water under the dual effects of an electrochemical method and a biological method is realized.

Description

technical field [0001] The invention relates to the technical field of agricultural non-point source pollution control, in particular to an electrode biofilm device for in-situ denitrification and dephosphorization of farmland ditches and a use method thereof. Background technique [0002] In recent years, due to the strengthening of the government's environmental supervision and the improvement of people's awareness, point source pollution such as industrial wastewater, aquaculture wastewater and urban domestic sewage has been effectively controlled, and the water quality environment has been significantly improved. To further improve water quality, it is necessary to increase the control of non-point source pollution in rural areas. Rural non-point source pollution is mainly due to the unreasonable use of pesticides, chemical fertilizers and other substances, which lead to excessive COD, ammonia nitrogen, and total phosphorus in ditch drainage. [0003] Ecological ditch i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/10C02F101/16
CPCC02F1/001C02F1/281C02F1/283C02F3/302C02F9/00C02F2101/105C02F2101/16C02F2203/006
Inventor 张楚璇梁新强
Owner ZHEJIANG UNIV
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