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Wastewater advanced treatment equipment and method for catalytic ozonation membrane reactor

A membrane reactor and advanced treatment technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of difficult recovery of ozone catalyst and low efficiency of ozone aeration mass transfer. , to achieve the effect of advanced treatment, improved ozone oxidation capacity and low energy consumption

Inactive Publication Date: 2015-08-12
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

Using this method can effectively solve the problems of difficulty in ozone catalyst recovery and low efficiency of ozone aeration and mass transfer.

Method used

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  • Wastewater advanced treatment equipment and method for catalytic ozonation membrane reactor
  • Wastewater advanced treatment equipment and method for catalytic ozonation membrane reactor
  • Wastewater advanced treatment equipment and method for catalytic ozonation membrane reactor

Examples

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Embodiment

[0041] Taking the secondary biochemical process external discharge of saline waste water of a refining and chemical company as the test object, the example of applying the present invention for advanced treatment further illustrates the present invention.

[0042] The water quality of the wastewater discharged by the enterprise after the secondary biochemical treatment process is: chemical oxygen demand 80-120mg / L, pH 6-9, ammonia nitrogen 7-12mg / L, conductivity 3-4mS / cm.

[0043] like figure 1 As shown in the technological process, the above-mentioned waste water to be treated is 1m 3 The / h flow is introduced into the raw water tank, pressurized to 2 atm by the pump 2, and then enters the pre-filter 5 filled with quartz sand. The chemical oxygen demand of the product water is 75-110mg / L.

[0044] The above-mentioned produced water is introduced into one side of catalytic ozone membrane reactor 7, and for each membrane reactor, the waste water flow rate is 125L / h. There are...

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Abstract

The present invention relates to wastewater advanced treatment equipment and a method for a catalytic ozonation membrane reactor and belongs to the field of wastewater treatment. The method comprises the steps of pretreating to-be-treated organic wastewater by means of a pre-processed filtering device and then leading the organic wastewater to one side of the catalytic ozonation membrane reactor; leading the ozone-containing gas to the other side of the membrane reactor at the same time; diffusing the ozone to the wastewater side through a hollow fiber membrane in the membrane reactor; and initiating the catalytic oxidation reaction between the surface of the membrane with a catalytic function layer and organic compounds in the wastewater. The above catalytic ozonation membrane reactor is immersed type and the membrane thereof is in the form of an oxidation-resistant hydrophobic hollow fiber organic catalytic membrane. The catalytic function layer of the membrane is at the surface of the membrane. Heterogeneous catalyst articles are adopted as the load. By means of the method, degradation-resistant industrial wastewaters in the fields of dyes, petrochemical engineering, pharmaceuticals and the like can be effectively treated. Meanwhile, the size of the reactor is reduced, and the length of the process route is shortened. The ozone transfer and the oxidation rate are increased. Moreover, the loss during the ozone transfer and reaction process is reduced.

Description

【Technical field】 [0001] The invention relates to a wastewater advanced treatment method, in particular to a device and method for advanced treatment of organic wastewater using a catalytic ozone membrane reactor, and belongs to the field of sewage treatment. 【Background technique】 [0002] A large amount of wastewater discharged by modern industrial activities has complex components, great environmental hazards, and is often difficult to biodegrade. The traditional biochemical treatment technology is difficult to guarantee the water quality, and the new wastewater treatment technology is widely used in the advanced treatment and reuse process of industrial wastewater. Among these technologies, advanced oxidation technology (AOPs) can use the generated hydroxyl radicals to quickly mineralize organic pollutants or improve the biochemical properties of wastewater, and has many advantages such as fast reaction speed, wide adaptability, and strong oxidation ability. Catalytic o...

Claims

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Application Information

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IPC IPC(8): C02F1/78C02F1/44C02F101/30
Inventor 王军王岽张勇
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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