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Method for treating waste water through double catalytic oxidation process and device for achieving method

A dual-catalytic oxidation and wastewater treatment technology, which is applied in chemical instruments and methods, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of poor wastewater adaptability, low treatment depth, and poor treatment effect , to achieve the effect of reducing processing costs, reducing processing costs, and reducing cell voltage

Inactive Publication Date: 2015-12-30
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The treatment method described in this document first electrolyzes the wastewater and then oxidizes the hypochlorous acid. Although the hypochlorous acid produced by electrolysis is used, it does not oxidize the organic matter in the wastewater in the order of "easy first and then difficult". The treatment depth is low and the treatment cost is low. High; for wastewater with low or no chloride ion content, the treatment effect of this process is poor, so the adaptability to wastewater is poor

Method used

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  • Method for treating waste water through double catalytic oxidation process and device for achieving method

Examples

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Effect test

Embodiment 1

[0031] Biochemical waste water of a rubber factory sewage styrene-butadiene workshop: water volume 150m 3 / h, COD is 95mg / L, conductivity is 5500μs / cm, and chloride ion content is 110mg / L.

[0032] Devices for the treatment of wastewater by double catalytic oxidation process: such as figure 1 As shown, it includes a sodium hypochlorite catalytic oxidation reactor 5 and an electrolytic catalytic oxidation reactor 9. The bottom of the sodium hypochlorite catalytic oxidation reactor 5 is connected to the water inlet pipe 1, and the water inlet pipe 1 is provided with a water inlet pump 2, and the sodium hypochlorite storage tank 4 is sequentially connected to dosing through pipelines. The metering pump 3 and the water inlet pipe 1, the upper part of the sodium hypochlorite catalytic oxidation reactor 5 is connected to the upper part of the electrolytic catalytic oxidation reactor 9 through the overflow pipe 7, the electrolytic catalytic oxidation reactor 9 is connected to the wat...

Embodiment 2

[0036] Reverse osmosis concentrated water in a sewage reuse workshop of an oil refinery: water volume 100m 3 / h, COD is 120mg / L, conductivity is 8500μs / cm, and chloride ion content is 1200mg / L.

[0037] The device of the double catalytic oxidation process used in embodiment 2 is the same as that of embodiment 1.

[0038] The catalyst used is based on γ-Al 2 o 3 As a carrier, copper oxide is loaded as an active component. The volume ratio of the catalyst to the waste water is 200%, and the weight of the sodium hypochlorite is 0.1% of the waste water. The electrolytic catalytic anode material is a titanium-based coated electrode, and the coating composition is IrO 2 , The cathode material is titanium mesh.

[0039] Treatment process: the waste water to be treated enters 100m through the water inlet pipe 1 and the water inlet pump 2 3 At the bottom of the sodium hypochlorite catalytic oxidation reactor 5, it flows through the filled layer of the sodium hypochlorite catalyst...

Embodiment 3

[0041] Wastewater from the extraction workshop of a rare earth smelter: water volume 200m 3 / h, COD is 220mg / L, conductivity is 41000μs / cm, chloride ion content is 16000mg / L.

[0042] The device of the double catalytic oxidation process used in embodiment 3 is the same as that of embodiment 1.

[0043] The catalyst used is based on γ-Al 2 o 3 As the carrier, the loaded iron oxide and cobalt oxide are the active components. The volume ratio of the catalyst to the waste water is 100%, and the weight of the sodium hypochlorite is 0.01% of the waste water. The electrolytic catalytic anode material is a titanium-based coated electrode, and the coating composition is SnO 2 , the cathode material is a titanium plate.

[0044] Treatment process: the waste water to be treated enters 400m through the water inlet pipe 1 and the water inlet pump 2 3 At the bottom of the hypochlorous acid catalytic oxidation reactor 5, it flows through the filled layer of the hypochlorous acid cataly...

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Abstract

The invention belongs to the field of waste water treatment, and particularly relates to a method for treating waste water through a double catalytic oxidation process. A catalyst is added to the waste water for sodium hypochlorite catalytic oxidation, and then electrolytic catalysis is carried out. Gamma-Al2O3 is adopted as a carrier of the catalyst, and oxide loaded with one or more of Mn element, Cu element, Fe element, Co element, Ce element and K element is adopted as an active component of the catalyst. When the catalyst is added to the waste water for sodium hypochlorite catalytic oxidation, sodium hypochlorite is preferably added. Organic matter with weak oxidation resistance in the waste water is firstly subjected to catalytic oxidation decomposition through sodium hypochlorite, and organic matter with high oxidation resistance is subjected to electrolytic catalytic oxidation degradation later on. The organic matter in the waste water is treated in a classification mode through the double catalytic oxidation process, the hydraulic retention time is shortened, and treatment efficiency is improved. The invention further provides a device for achieving the method. The device is simple in structure and easy to implement.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a method and a device for treating waste water by a double catalytic oxidation process. Background technique [0002] With the rapid development of modern industry, the industrial wastewater produced not only increases in water volume, but also develops towards the trend of complex composition and high content of inorganic salts. At present, most of the industrial wastewater treatment processes at home and abroad adopt economical biological methods for treatment. However, with the increasingly stringent discharge standards in various places, it is difficult to meet the discharge targets only by biochemical treatment, especially high-salt and refractory wastewater. Require. [0003] The treatment of high-salt and refractory wastewater is a hot research topic of domestic and foreign scholars in recent years. In order to achieve a higher treatment depth, physical a...

Claims

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Application Information

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IPC IPC(8): C02F9/06
Inventor 邹宗海潘咸峰李波刘婷婷
Owner CHINA PETROLEUM & CHEM CORP
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