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a membrane reactor

A technology of membrane reactor and ceramic membrane, which is applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of high price and poor cathode conductivity, achieve low cost, and is conducive to wastewater purification , Reduce the effect of membrane pore fouling

Active Publication Date: 2020-06-09
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, PVDF (polyvinylidene fluoride) / stencil membrane cathode has poor electrical conductivity, and graphene and carbon nanotubes are used as functional materials for modifying the membrane, which are expensive

Method used

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Examples

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Embodiment 1

[0037] This example figure 1 As shown, including the electrolytic cell 1, the C / Al placed in the electrolytic cell 1 2 o 3 The ceramic membrane 2 and the graphite tube 3 placed in the electrolytic cell 1, the graphite tube 3 is sleeved on the C / Al 2 o 3 On the outside of the ceramic membrane 2, the negative electrode of the power supply 4 is connected to the C / Al 2 o 3 The outer wall of the ceramic membrane 2, the positive pole of the power supply 4 is connected to the outer wall of the graphite tube 3; the C / Al 2 o 3 The ceramic membrane 2 is an alumina ceramic tube with a carbon black coating on the outer wall; the C / Al 2 o 3 One end of the ceramic membrane 2 is sealed at the bottom of the electrolytic cell 1, and the C / Al 2 o 3 The other end of the ceramic membrane 2 is open, and one end of the outlet pipe 5 passes through the C / Al 2 o 3 The open end of the ceramic membrane 2 extends into the C / Al 2 o 3 In the cavity of the ceramic membrane 2, the other end of ...

Embodiment 2

[0061] The structure of the membrane reactor in this embodiment is the same as that of the membrane reactor in Example 1, the difference is that in this embodiment, the C / Al 2 o 3 The preparation method of ceramic membrane 2 is:

[0062] S1. Disperse carbon black with a particle size of 30nm into the acidification solution, mix and stir for 6 hours at a temperature of 80°C, rinse the acidified carbon black with pure water until the pH value is 7, and then rinse the acidified carbon black at a temperature of 100°C. Dry under the condition of ℃, obtain ready-to-use carbon black; The consumption ratio of described carbon black and acidifying solution is 1g:80mL; Described acidifying solution is the mixed solution of sulfuric acid solution and nitric acid solution that volume ratio is 3:1; The massfraction of described sulfuric acid solution is 98%; The massfraction of described nitric acid solution is 68%;

[0063] S2. Add the ready-to-use carbon black obtained in S1 into the m...

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Abstract

The invention provides a membrane reactor. The membrane reactor comprises an electrolytic cell, a C / Al2O3 ceramic membrane and a graphite tube, a negative electrode of a power source is connected withthe outer wall of the C / Al2O3 ceramic membrane, and a positive electrode of the power source is connected with the outer wall of the graphite tube; one end of the C / Al2O3 ceramic membrane is arrangedat the bottom of the electrolytic cell in a sealed mode, and the other end of the C / Al2O3 ceramic membrane is opened; one end of a water outlet tube extends into a cavity through the open end of theC / Al2O3 ceramic membrane, the other end of the water outlet tube is connected with a peristaltic pump, an ozone generator is led into a cavity through a pipeline, wherein the cavity is formed by the graphite tube and the C / Al2O3 ceramic membrane, and an air outlet of the pipeline is tightly attached to the outer wall of the C / Al2O3 ceramic membrane; and one end of a water inlet tube is inserted into the electrolytic cell, and the other end of the water inlet tube is connected with a water inlet pump. According to the membrane reactor, the C / Al2O3 ceramic membrane is deposited in a pore of an alumina ceramic tube through carbon black to form a carbon black coating, the obtained C / Al2O3 ceramic membrane is small in pore diameter, and operation is easy; and pollutants can be quickly degraded,membrane pollution is reduced, the pollutants smaller than membrane pores are removed, waste water purification is facilitated, the ozone generator jets mixed gas to achieve the effect of flushing the C / Al2O3 ceramic membrane, membrane blockage is prevented, accumulation of the pollutants in the membrane pores is reduced, and cleaning of the membrane pores is achieved.

Description

technical field [0001] The invention belongs to the technical field of membrane filtration, and in particular relates to a membrane reactor. Background technique [0002] Membrane filtration has attracted attention for wastewater purification over the past few decades because it can retain many types of pollutants without the need for additional chemicals and with relatively low energy consumption. However, during the application of membrane filtration, two problems usually arise. One is membrane fouling, which is caused by concentration polarization and pore clogging. Another is that membranes have difficulty removing contaminants that are smaller than the pores of the membrane. In particular, some persistent toxic organic molecules will threaten the ecosystem. Fabricating membranes with pores smaller than those of toxic organic molecules is an option, but it results in decreased flux and higher operating costs. In addition, some organic pollutants are easily adsorbed o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/44C02F1/467C02F101/38
CPCC02F1/44C02F1/4672C02F2101/38
Inventor 卓琼芳牛军峰李衍亮唐少宇张帆
Owner DONGGUAN UNIV OF TECH