An electrochemical biological floating island for purification of persistent pollutants in urban water bodies

A biological floating island and persistent technology, applied in the field of water treatment, can solve the problems of lack of energy-saving, safe and high-efficiency water body restoration equipment, and achieve the effect of strengthening the water body environment, beautifying the urban environment and easy maintenance.

Active Publication Date: 2017-12-12
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no energy-saving, safe and efficient water restoration equipment on the market

Method used

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  • An electrochemical biological floating island for purification of persistent pollutants in urban water bodies

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Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 1 As shown, an electrochemical biological floating island for purification of persistent pollutants in urban water is characterized in that it includes a floating plate (1), an anode plate (2), a cathode plate (3), a propeller (4), The solar panel (5), the plant floating island (6), and the root-fixing base (7), the whole system is anchored to the center of the lake or river, and the buoyancy provided by the floating plate (1) carries the root-fixing base ( 7) to plant floating islands (6); solar panels (5) provide electric energy to drive propellers (4) to cause water flow disturbances, enhance mass transfer efficiency, and apply constant pressure on the anode (2) and cathode (3) Electric current realizes electrosorption and electrocatalytic purification of persistent pollutants.

[0025] The floating plate (1) is made of polyurethane foam plastics, and the anode (1) and cathode (2) are lead oxide mesh anode and titanium mesh cathode covered with nanofi...

Embodiment 2

[0027] The preparation method of the lead oxide wire mesh anode and the titanium wire mesh cathode covered with the nanofiber membrane material described in Example 1 are as follows,

[0028] First, polyvinyl alcohol particles with a molecular weight of 100,000 and block copolymer P123 particles were dissolved in ultrapure water at a mass ratio of 20:1 to form a turbid emulsion with a mass concentration of 200 g / L as a spinning solution; The sold lead oxide screen anode and titanium screen cathode were placed in a self-made high-voltage electrospinning device, and a copper wire was used to conduct with the cathode. The control voltage is 0.7 to 25,000 volts, and the distance between the screen electrode and the spray head is adjusted to 10 to 15 cm to obtain a stable and continuous jet flow. The jet flow is deposited on the surface of the screen electrode to form a nanofiber film. After 4 to 5 hours, the fiber membrane thickness reaches 0.5 to 1 mm, and the spinning is stopped...

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Abstract

The invention discloses an electrochemical biological floating island used for purifying persistent pollutant in city water body, which is restoration equipment capable of performing in-situ purification on polluted water body. The equipment is composed of a floating plate, a positive plate, a negative plate, a propeller, a solar cell panel, a plant floating island and a fixation foundation. A whole system takes an anchored mode for being fixed at center of lake or river, buoyancy is provided by the floating plate for bearing the fixation foundation for planting the plant floating island; electric energy is provided by a solar cell panel for driving the propeller to generate current disturbance; and electro adsorption and electrocatalysis purification of the persistent pollutant can be realized by applying constant current on anode and cathode. The equipment has the advantages of high purifying efficiency, strong self-holding capability, simple structure and convenient maintenance.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to an electrochemical biological floating island used for purifying persistent pollutants in urban water bodies. Background technique [0002] Water is an indispensable natural resource for human survival. However, with the continuous progress of human society, the rapid development of industry and agriculture, and the continuous growth of population, the problem of organic pollution in the water environment is becoming more and more serious. Persistent organic pollutants in water There are many types and large quantities, which seriously endanger human health, and the pollution problem is quite prominent. [0003] Pollutants in urban water environment mainly come from organic matter. The National Environmental Status Bulletin shows that organic pollution is relatively heavy in river sections where surface water flows through cities. The sewage discharged by urban residents and many...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/34C02F9/14
CPCY02E10/50Y02W10/37
Inventor 殷立峰牛军峰代云容谢利利张园正
Owner BEIJING NORMAL UNIVERSITY
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