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Membrane oxidation reactor and wastewater treatment method

A technology of oxidation reactor and waste liquid tank, which is applied in the field of membrane treatment, can solve the problems of increased cost, shortened service life, ceramic membrane pollution, etc., and achieves the effects of prolonging service life, no secondary pollution, and alleviating membrane pollution

Pending Publication Date: 2021-02-09
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The interception on the surface of the membrane is mainly due to mechanical sieving, electrostatic adsorption, and bridging, so that pollutants are trapped on the outer surface of the ceramic membrane. At the same time, pollutants are adsorbed on the surface and inside of the ceramic membrane and the effect of concentration polarization makes the membrane surface form a filter cake layer, causing ceramic membrane pollution, which increases the cost and shortens the service life.

Method used

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  • Membrane oxidation reactor and wastewater treatment method
  • Membrane oxidation reactor and wastewater treatment method
  • Membrane oxidation reactor and wastewater treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] like figure 1 As shown, a membrane oxidation reactor includes a ceramic membrane module 1, a waste liquid tank 2, a self-priming pump 3, a water purification tank 4, a gas-liquid mixing pump 5, and a nano-micro bubble generating device;

[0051] like figure 2 As shown, the ceramic membrane assembly 1 includes a tubular ceramic membrane 11, a first plug 12, a second plug 13, a connecting pipe 14, a first pipeline 15 and a first valve 141, and the tubular ceramic membrane 11 is placed in the waste liquid tank 2, one end of the tubular ceramic membrane 11 is connected to the first plug 12, and one end of the tubular ceramic membrane 11 is sealed through the first plug 12, and the other end of the tubular ceramic membrane 11 is connected to the second plug 13, through the first plug 12 The second plug 13 seals the other end of the tubular ceramic membrane 11, and the end of the second plug 13 away from the tubular ceramic membrane 11 communicates with the connecting pipe ...

Embodiment 2

[0062] Under normal temperature conditions, with 8mg / L methyl orange aqueous solution as simulation dyestuff, adjust the pH of methyl orange aqueous solution, methyl orange aqueous solution is poured in waste liquid tank 2, self-priming pump speed is fixed at 100r / min, start gas Liquid mixing pump 5, under the suction of the gas-liquid mixing pump 5, the gas and the methyl orange aqueous solution in the waste liquid tank 2 enter the gas-dissolving tank 62 through the third pipeline 621, and the gas-liquid is fully mixed in the gas-liquid mixing tank 62 A uniform gas-liquid mixture is formed, and the gas-liquid mixture enters the ejector 65 through the liquid flow meter 63 and the pressure gauge 64, and air is inhaled again in the ejector 65, and the air and the gas-liquid mixture are fully fused again and mixed evenly. Nano-micron bubbles are ejected at the outlet of the ejector 65, and passed into the waste liquid tank 2 through the pipeline;

[0063] The tubular ceramic memb...

Embodiment 3

[0067] The difference between this embodiment and embodiment 2 is: the pH of the methyl orange aqueous solution is adjusted to 3, and the pump speed of the self-priming pump is adjusted to 60, 80, 100r / min

[0068] Membrane flux and methyl orange removal rate are measured, and its measuring method is as follows:

[0069] Membrane flux measurement: After the experiment starts, use a stopwatch to measure the volume in the water purification tank every ten minutes. The experiment is carried out for 60 minutes, and the change in the volume of the effluent is observed. The membrane flux is represented by J, and the volume is represented by V. The water surface area is represented by s, the time is represented by △t, J=V / (s·△t), and the unit of flux is L / (m 2 h).

[0070] Determination of the removal rate of methyl orange: measure the concentration of methyl orange by using an ultraviolet spectrophotometer. The methyl orange standard solution of 1, adjust pH=3 respectively, carry ...

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Abstract

The invention discloses a membrane oxidation reactor, relates to the technical field of membrane treatment, and provides a membrane oxidation reactor based on the problems of easy pollution and shortservice life of a ceramic membrane in the use process, the membrane oxidation reactor comprises a membrane assembly, a waste liquid tank, a self-priming pump, a purified water tank, a gas-liquid mixing pump and a nano-micron bubble generation device; the membrane assembly comprises a tubular membrane, a first plug, a second plug and a connecting pipe, the inlet end of the self-priming pump is communicated with the connecting pipe, and the outlet end of the self-priming pump is communicated with the purified water tank; the inlet end of the gas-liquid mixing pump is communicated with the wasteliquid tank, the outlet end of the gas-liquid mixing pump is communicated with the inlet end of the nano-micron bubble generation device, and the outlet end of the nano-micron bubble generation deviceis communicated with the waste liquid tank. The invention also provides a wastewater treatment method which has the beneficial effects that when the membrane oxidation reactor degrades wastewater, nano-micron bubbles generated by the nano-micron bubble generation device are attached and flow on the outer surface of the membrane, so that the problem of membrane pollution is relieved, and the service life of the membrane is prolonged.

Description

technical field [0001] The invention relates to the technical field of membrane treatment, in particular to a membrane oxidation reactor and a wastewater treatment method. Background technique [0002] High-concentration organic wastewater comes from printing and dyeing, medicine, food and other industries. Printing and dyeing wastewater has complex components, high concentration, high chroma, and high toxicity. human health. [0003] There are many ways to treat high-concentration refractory organic wastewater, and the cost of using a single method is high, and it is difficult to achieve the ideal treatment effect. Therefore, industrial refractory organic wastewater is often treated in a combination of several treatments, before the advanced treatment of wastewater. preprocessing. At present, the main treatment methods of printing and dyeing wastewater include physical and chemical methods, chemical methods and biological methods. The specific treatment methods include ad...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F101/34C02F101/38C02F1/28C02F1/44
CPCC02F3/1268C02F3/1278C02F2101/30C02F2101/34C02F2101/38C02F2303/26C02F2209/40C02F2209/03C02F1/28C02F1/44Y02W10/10
Inventor 余江刘向荣岳翠娇施王军
Owner BEIJING UNIV OF CHEM TECH
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