Electrochemical biofilm filter assembly, application thereof and reactor

A filter component and biofilm technology, applied in the direction of electrochemical biocombination treatment, chemical instruments and methods, biological treatment devices, etc., can solve the problem that EAOPs are difficult to effectively mineralize organic pollutants, are affected by water quality in specific locations, and accumulate intermediate products and other problems, to achieve the effect of compact structure, improved degradation effect, and enhanced degradation

Inactive Publication Date: 2021-04-02
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, studies have shown that EAOPs are difficult to effectively mineralize organic pollutants, leading to the accumulation of intermediate products
In some researches, the electrochemical degradation process has been regulated through parameter optimization, and the mineralization effect has been partially improved. However, the complexity of the EAOPs reaction leads to the fact that the degree of mineralization of the parent compound and the generation of intermediate products may be affected by the water quality of a specific location, and the process regulation exists. A certain degree of difficulty; there are also studies to realize the transformation of intermediate products through process combination, and the difference of parent compounds puts forward higher requirements for the adaptability of coupling technology

Method used

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  • Electrochemical biofilm filter assembly, application thereof and reactor
  • Electrochemical biofilm filter assembly, application thereof and reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as Figure 1-2 As shown, it is an electrochemical biofilm filtration assembly provided in this embodiment, which is used to strengthen the degradation of intermediate products in the sewage treatment process, including the first titanium mesh cathode 1-1 as the cathode, and the titanium-based tin as the anode Antimony anode 3, the second titanium mesh cathode 1-2 as cathode, water outlet pipe 5, water outlet peristaltic pump 7 arranged outside the reactor shell 9 and connected to the water outlet pipe 5, water inlet pipe 8, voltage stabilizing Power supply 4; the titanium mesh is sheet-shaped, and the first titanium mesh cathode 1-1 and the second titanium mesh cathode 1-2 are respectively placed on both sides of the film frame 2, and are connected to the negative pole of the stabilized power supply, and serve as The substrate for biofilm growth; the membrane frame 2 is filled with an electrochemical biofilm filter assembly 10; the titanium-based tin-antimony elect...

Embodiment 2

[0037] Such as figure 2 Shown is an electrochemical biofilm filtration reactor including the electrochemical biofilm filtration assembly according to Embodiment 1 of the present invention, which also includes a reactor housing 9 .

[0038] The above-mentioned electrochemical biofilm reactor is used to treat simulated surface water containing p-aminobenzenesulfonic acid, and the experimental conditions are set as: influent COD 40mg / L, NH 4 +-N 2mg / L, p-aminobenzenesulfonic acid 10μM, regulated DC power supply voltage of 4.0V, treated water volume of 17.7L / d, and hydraulic retention time of 6.0h. A reactor with no external electric field and other conditions under the same conditions was set as a blank control group. The two reactors were operated continuously for 30 days in the continuous flow mode, and the results showed that the removal rate of COD in the two reactors was >70%, and the removal rate of p-aminobenzenesulfonic acid in the blank group was about 50%, while the ...

Embodiment 3

[0040] Use the above-mentioned electrochemical biofilm reactor to treat simulated surface water containing p-aminobenzenesulfonic acid. The experimental conditions are set as follows: the concentration of influent COD is 40mg / L, 4 + The concentration of -N is 2mg / L, the concentration of p-aminobenzenesulfonic acid is 10μM, the regulated DC power supply voltage is 4.0V, the treated water volume is 17.7L / d, and the hydraulic retention time is 6.0h. Set the anode as a graphite plate and the reactor with the same conditions as the control group. The two reactors were operated continuously in continuous flow mode for 30 days, and the results showed that the removal rate of COD in the two reactors was >70%, and the removal rate of p-aminobenzenesulfonic acid in the control reactor with graphite plate as the anode was about 60% , and the removal rate of p-aminobenzenesulfonic acid can reach more than 80% in the reactor with tin-antimony electrode as the anode.

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Abstract

The invention discloses an electrochemical biofilm filter assembly for enhancing degradation of an intermediate product, a reactor with the assembly and application of the assembly in enhancing degradation of the intermediate product in sewage treatment. The assembly is suitable for decentralized and centralized sewage treatment. According to the assembly, two titanium meshes serve as cathodes andare arranged on the two sides of the membrane assembly respectively, a titanium-based tin-antimony electrode serves as an anode and is arranged on the inner sides of the two titanium meshes to form aclosed membrane cavity, a water outlet pipe and a peristaltic pump are connected above the membrane cavity, and the peristaltic pump operates in a pumping stop mode. Under a certain external voltage,hydroxyl radicals are generated on the surface of the anode, sewage is sucked into the membrane cavity through the titanium mesh cathodes, and when the sewage flows through the surface of the anode,organic pollutants in the water are oxidized and degraded. Meanwhile, a layer of attached biological membrane is gradually formed on the surfaces of the outer sides of the titanium meshes, oxidative degradation products of organic pollutants make contact with the biological membrane on the surface of the titanium mesh in a pumping stop mode, enhanced degradation is achieved, and therefore efficient degradation of the organic pollutants is achieved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment membrane reactor components, and in particular relates to an electrochemical biomembrane filter component for strengthening the degradation of intermediate products, a reactor with the component, and an application of the component in strengthening the degradation of intermediate products in sewage treatment . Background technique [0002] Drugs such as antibiotics, painkillers, anti-inflammatory drugs and hormones are the most commonly detected organic pollutants in the water environment. These compounds and their metabolites are discharged through their production sites, domestic sewage, medical wastewater and livestock after administration The excrement discharged into the surface water environment poses a potential threat to humans and other organisms. Electrochemical Advanced Oxidation Technology (EAOPs) has relatively mild conditions, simple operation, no chemical agent addition, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F101/30
CPCC02F3/005C02F2101/30C02F2203/006C02F2209/03C02F2209/08C02F2209/38
Inventor 王志伟田晨昕王雪野
Owner TONGJI UNIV
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