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Photo/electricity Fenton device for treating refractory organic wastewater

An organic waste water, refractory technology, applied in water/sewage treatment, light water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problems of high energy consumption, unsatisfactory treatment effect, etc. Long service life effect

Inactive Publication Date: 2012-09-12
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing Fenton processing devices are mainly simple processing devices with a single technology (optical, electrical or Fenton), which generally process high energy consumption
However, the existing binary combination processing devices (electric Fenton or optical Fenton devices) have the problem of unsatisfactory processing effects, and there are few reports on optical / electrical Fenton co-processing devices.

Method used

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  • Photo/electricity Fenton device for treating refractory organic wastewater
  • Photo/electricity Fenton device for treating refractory organic wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0017] A photo / electrical Fenton device for treating refractory organic wastewater, its schematic diagram is as follows figure 1 As shown, it includes: magnetic stirrer 1, cathode 2, electrolytic tank 3, aeration tube 4, aerator 5, lamp ballast 6, DC constant current and voltage supply 7, ultraviolet lamp 8, iron electrode 9 , anode 10, baffle 11. The electrolytic tank is a reaction tank with an open top, which is the main structure of the photoelectric Fenton device, and the electrolytic tank is placed on a magnetic stirrer.

[0018] The anode of the device adopts Ti / Pt electrode, the cathode adopts ACF electrode, and the activated carbon fiber cloth is wrapped on the metal iron plate. On both sides, the specific surface area of ​​the activated carbon fiber is large, and more oxygen in the solution generates hydrogen peroxide on the cathode. The length and width of the electrode plate are determined according to the width and height of the electrolytic cell.

[0019] The tw...

Embodiment 2

[0025] Configure 3000mg / L of polyvinyl alcohol simulated desizing wastewater, take 750mL of wastewater and adjust the pH value to 6 with a mass concentration of 40% dilute sulfuric acid, and add 10.0‰ (accounting for the mass percentage concentration of polyvinyl alcohol simulated desizing wastewater) Seven After hydrating ferrous sulfate powder, this photoelectric Fenton device is used. The size of the electrolytic cell is 200mm×110mm×120mm, and the anode is a Ti / Pt electrode, and the size is 60mm×110mm×0.5mm. The cathode is ACF, the electrode uses viscose-based activated carbon fiber, and the specific surface area is 1300m 2 / g, cut it to the same size as the anode, wind it on the inert Ti electrode, and aerate the cathode with an aerator. The electrode is powered by a DC-type constant current and voltage stabilized power supply, and the constant voltage current is adjusted to 2.5A. Turn on the magnetic stirrer with a rotating speed of 1000r / min. Insert an ultraviolet lamp...

Embodiment 3

[0027] The polyether wastewater of a petrochemical company in Shanghai has low B / C and poor biochemical properties. The wastewater volume is 1500mL, the size of the electrolytic cell is 400mm×220mm×240mm, the size of the cathode and anode is 120mm×110mm×0.5mm, and the cathode is ACF The electrode is made of viscose-based activated carbon fiber with a specific surface area of ​​1400m 2 / g, the electrode plate spacing is 8cm, the constant voltage current is 1.5A, add 8.0‰ (accounting for the mass percentage concentration of polyether wastewater) ferrous sulfate heptahydrate powder, and adjust the pH to 4 with 30% hydrochloric acid. The speed of the magnetic stirrer is 800r / min, the power of the ultraviolet lamp is 8w, the aeration rate of the aerator is 2.5L / min, and the iron rod with a diameter of 5mm is inserted under the experimental conditions, and the photoelectric Fenton reaction is carried out for 120min. COD in glyphosate wastewater Cr The removal rate reached 65.5%.

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Abstract

The invention relates to a photo / electricity Fenton device for treating refractory organic wastewater, which comprises an electrolytic cell, wherein the electrolytic cell is a reaction tank with an opening at the top end and is of a main body structure of the photo / electricity Fenton device; a cathode and an anode of the reaction tank are respectively connected with a positive electrode and a negative electrode of a direct current voltage stabilizing power supply and are respectively arranged at two ends of the reaction tank; the cathode of the reaction tank adopts an ACF (Activated Carbon Fiber) electrode, an ACF fabric is wrapped on a metal iron plate, and the reaction tank is arranged on a magnetic stirring apparatus; an aeration machine continuously inputs air to the cathode; an ultraviolet lamp tube is inserted into the center of the reaction tank; and an iron rod is inserted into the reaction tank and is arranged between the ultraviolet lamp tube and the anode. Due to the adoption of the structure, the photo / electricity Fenton device has a simple structure, and is convenient in operation and reliable in operation; and aiming at the water quality conditions of organic wastewater, the current of the photo / electricity Fenton device, the spacing between substrates and the power of the ultraviolet lamp tube are regulated, so that the effluent quality reaches the biochemical treatment requirement.

Description

technical field [0001] The invention relates to a treatment device for refractory organic waste water, in particular to a light / electrical Fenton treatment device for refractory organic waste water. Background technique [0002] In recent years, with the rapid development of my country's economy, industries such as textiles, petrochemicals, plastics, synthetic fibers, papermaking, coking, printing and dyeing, and pharmaceuticals have also developed rapidly, and various wastewater containing a large amount of refractory organic pollutants has followed. Correspondingly, most of these industrial wastewaters contain toxic and harmful substances that are difficult to degrade, and their BOD 5 / COD Cr <0.3, the organic pollutants can hardly be degraded by microorganisms after entering the water body, or the degradation takes a long time, and the harm to the environment is difficult to control. [0003] The treatment of refractory organic wastewater is difficult and costly, and ...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/72C02F1/32
Inventor 徐炎华储海蓉杨洁邹君
Owner NANJING UNIV OF TECH
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