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Floating bed catalytic ozonation reactor and method therewith for treating waste water

A technology of ozone catalytic oxidation and floating catalyst, applied in the direction of oxidized water/sewage treatment, etc., can solve the problems of poor gas-liquid-solid three-phase mass transfer efficiency, large system pressure loss, low ozone utilization rate, etc., and achieve good floating state, The effect of saving floor space and simple structure

Active Publication Date: 2015-12-09
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, both fluidized bed and fixed bed reactors have structural disadvantages
The fluidized bed ozone catalytic oxidation system has certain requirements on the density in order to ensure that the catalyst is in a fluidized state. A catalyst with a higher density requires a larger intake flow rate to blow the catalyst up for fluidization, which is likely to cause low ozone utilization in the system. , and high power consumption; fixed bed ozone catalytic oxidation system uses a large amount of catalyst, the system pressure loss is large, and it is easy to cause uneven flow and poor gas-liquid-solid three-phase mass transfer efficiency

Method used

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  • Floating bed catalytic ozonation reactor and method therewith for treating waste water
  • Floating bed catalytic ozonation reactor and method therewith for treating waste water
  • Floating bed catalytic ozonation reactor and method therewith for treating waste water

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specific Embodiment approach 2

[0020] Specific implementation mode two: The gas passed into the reactor in this embodiment is air that has not passed through the ozone generator. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0021] Specific implementation mode three: The catalyst of this embodiment is activated carbon fiber filament (PAN-ACF). Others are the same as in the first embodiment.

[0022] In order to detect the reactor of the present invention and method to the treatment effect of waste water, adopt fibrous flexible floating catalyst catalyst PAN-ACF and catalyst MnOx / PAN-ACF respectively, use figure 1 The reactor shown is used for the advanced treatment test of refractory cationic printing and dyeing wastewater. The waste water is the biochemical secondary effluent of a printing and dyeing factory with a chroma of 130-160 times and a COD of 140-160mg / L, and the dosage of the catalyst is 1.0g / L. The wastewater is treated by the method of Embodiment 1, samples are taken at regular intervals, and the chromaticity and COD value of the water samples are measured. Experimental results such as image 3 and Figure 4 shown.

[0023] in, image 3Middle - □ - represents the graph of chro...

specific Embodiment approach 4

[0025] Specific implementation mode four: The reactor and catalyzer used in this embodiment are the same as Embodiment 1 (see figure 1 , figure 2 ), the difference is that the actual wastewater is treated continuously.

[0026] This embodiment is mainly divided into the following steps: 1. On the porous ring plate (8-4), fix the catalyst (PAN- ACF / MnOx); 2. The wastewater storage tank is connected to the water inlet pipe (2) through the water pump, and the residence time of the wastewater in the reactor is controlled by adjusting the flow rate of the water pump; 3. The ozone mixed gas generated by the ozone generator passes through the ozone inlet pipe (6) Pass in and disperse the ozone mixed gas into uniform and tiny bubbles through the microporous gas diffusion plate (7). A large number of small bubbles and wastewater flow upward, driving the light, fibrous, flexible floating catalyst to float in the wastewater And float up and down to form a three-phase floating bed of...

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Abstract

The invention relates to a floating bed catalytic ozonation reactor and a method therewith for treating waste water. A floating catalyst bed assembly is installed in the reactor and is formed by an upper fixing frame, a lower fixing frame and a hanging rope. A porous annular plate is arranged on the hanging rope. One end of a flexible floating catalyst is fixed on the porous annular plate. A water distributing device is arranged above the reactor and is used for uniformly distributing waste water to all parts. An air inlet pipe and a water distributor are arranged under the reactor and are used for uniformly diffusing gas. In the invention, by means of the light-weight flexible fiber-like catalyst arranged on the floating bed, the catalyst is uniformly distributed in the space of the reactor, and with disturbance of ozone bubbles, the reactor is improved in gas-solid-liquid mass transfer efficiency and ozone utilization rate, is reduced in system resistance, and can decompose and mineralize refractory organic substances in waste water effectively.

Description

Technical field [0001] The present invention involves a method of treating wastewater ozone catalysts and their methods of processing wastewater. It specifically involves a method of catalytic oxidation reactor with flexible carrier catalysts and the difficulty of degrading organic pollutants wastewater. Background technique [0002] The ozone catalytic oxide treatment device is a three -react system: qi, solid, and liquid. How to strengthen the system's quality transmission ability without increasing fluid resistance and improve the catalyst catalytic effect is the goal pursued by researchers.In recent years, many scholars have loaded new catalysts in fluidized beds and fixed beds, and degradable difficulty degradation organic pollutants have been studied.However, both fluidized beds and fixed bed reactors have structural disadvantages.The fluidized bed oxidation catalytic oxidation system is to ensure that the catalyst is in a fluidization state, and there are certain requireme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78
Inventor 尤宏贾玉红王维业柳锋迟明磊
Owner HARBIN INST OF TECH AT WEIHAI
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