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Multi-stage series ozone catalytic oxidation deep treatment device and preparation method of catalyst applied to same

A technology of ozone catalytic oxidation and advanced treatment, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, water/sewage multi-stage treatment, etc. , affect water quality and other issues, to achieve the effect of improving ozone utilization rate, increasing reactivity, and convenient operation

Inactive Publication Date: 2011-11-23
山东金诚石化集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the research at home and abroad only uses the existing carrier, or does not discuss the powder shedding of the catalyst. The powder shedding is often serious during use, which affects the water quality and the long-term use of the catalyst.

Method used

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  • Multi-stage series ozone catalytic oxidation deep treatment device and preparation method of catalyst applied to same
  • Multi-stage series ozone catalytic oxidation deep treatment device and preparation method of catalyst applied to same
  • Multi-stage series ozone catalytic oxidation deep treatment device and preparation method of catalyst applied to same

Examples

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Effect test

Embodiment 1

[0042] Example 1: Three-stage series ozone catalytic oxidation advanced treatment device.

[0043] Such as figure 1 , 2 As shown, a three-stage series-connected ozone catalytic oxidation advanced treatment device provides an equipment system for treating and reusing waste water from refineries. The water drain is controlled by the water inlet part 1 through the regulating valve. Enter the bottom of the first reaction tank 2-1, after fully contacting and reacting with the ozone released by the gas distribution device 9 and the catalyst layer 8, it flows upward and overflows to the first water storage tank 3-1, and the first water storage tank 3-1 The bottom of the partition wall is provided with a plurality of water outlets 10, and the sewage enters the second reaction tank 2-2 along the water outlets 10, repeats the above process, passes through the second water storage tank 3-2, the third reaction tank 2-3 successively, and passes through three times and After the catalyst ...

Embodiment 2

[0048] Embodiment 2: method for preparing catalyst with large particle size and high strength

[0049] 1) Weigh 4 kg of diaspore powder, add 1.5 L of 10% manganese nitrate, and mix in a blender for 30-80 minutes;

[0050] 2) preparing a weight concentration of 5% to 20% manganese nitrate solution, called binder solution;

[0051] 3) Spray into the binder solution, the spraying amount is 3% to 50% of the powder weight, and the particle size of the granulation is controlled to be 6 to 15mm;

[0052] 4) Curing the particulate matter prepared in step 3) with water vapor at room temperature for 4 to 8 hours;

[0053] 5) drying the particulate matter obtained in step 4): the drying temperature is 100-150° C., and the drying time is 2-5 hours;

[0054] 6) Calcining the dried particles in step 5) at 350°C to 800°C for 2 to 8 hours to obtain a primary catalyst carrier;

[0055] 7) Immerse the primary catalyst carrier prepared in step 6) into a manganese nitrate solution with a weigh...

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Abstract

The invention relates to a deep treatment and recycling technology of discharged wastewater, and particularly relates to a multi-stage series ozone catalytic oxidation deep treatment device and a preparation method of a catalyst applied to the device. The device is characterized by comprising two or more reaction tanks connected in series, wherein each reaction tank is equipped with a gas distribution device at the bottom, a catalyst layer is arranged above the gas distribution device, each reaction tank is equipped with an overflow port at the top, the height of the overflow ports decreases progressively in sequence, and an ozone generator connected with the gas distribution device is also arranged. The device provided by the invention is simple and easy to operate and can be used for handling different changes in water quality. Ozone addition amount can be adjusted at any time according to the water quality, so as to maintain the qualified and stable water quality of the effluent. Wastewater is fully mixed after contacting the catalyst multiple times, so that the ozone utilization rate is improved and reaction is completely performed. By using large-particle-size high-strength catalyst, the reactivity of the catalyst is improved, the wastewater treatment efficiency is improved, the loss of metal oxides on the surface of the catalyst is significantly reduced and secondary pollution is reduced.

Description

technical field [0001] The invention relates to a technology for advanced treatment and reuse of sewage external drainage, in particular to a method for preparing a multi-stage serial ozone catalytic oxidation advanced treatment device and its catalyst. Background technique [0002] With the increase of petrochemical enterprises year by year, the associated external discharge is also increasing. However, my country's per capita water resources are less than 1 / 4 of the world's average level. Water resources are short, and the deep treatment and reuse of production sewage has practical significance. At present, the treated wastewater of a large number of enterprises cannot meet the quality requirements of reused water. Therefore, a considerable part of petrochemical wastewater still needs to be discharged into the external environment. The key to the comprehensive discharge of petrochemical wastewater is the discharge of CODCr. In the existing technology, after the oil refine...

Claims

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Application Information

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IPC IPC(8): C02F9/04B01J23/34
Inventor 郭秀学姚若纳董云会李拥军王波周克伟孙农三杨传水
Owner 山东金诚石化集团有限公司
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