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Technology and device for composite type advanced catalytic oxidation

An advanced catalytic oxidation and catalytic oxidation technology, applied in chemical instruments and methods, special compound water treatment, water/sewage multi-stage treatment, etc., can solve the problems of low investment and operating costs, poor oxidation effect, and small mud production. , to achieve the effect of reducing operating costs, high catalytic oxidation efficiency, and low comprehensive energy consumption

Inactive Publication Date: 2016-12-07
SUZHOU FANGZHOU ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to overcome the shortcomings of the existing advanced oxidation process, such as high cost, poor oxidation effect, and low removal rate. Composite Advanced Catalytic Oxidation advanced treatment process and device with small amount, used for low-cost treatment of enterprise tail water containing refractory biodegradable organic matter

Method used

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  • Technology and device for composite type advanced catalytic oxidation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1), the tail water of the secondary biochemical treatment process is collected into the mixing reaction tank 1 (3-1) through the water inlet pump (2);

[0040] 2), in the mixed reaction tank 1 (3-1), add known Concentrated hydrogen peroxide, ferrous iron and flow acid are stirred and mixed by the stirrer (6), so that the tail water and the medicament are fully mixed, and the pH value is adjusted to 5.5-6.5. Carry out preliminary catalytic oxidation reaction under catalysis;

[0041] 3), the mixed solution enters the catalytic oxidation tank 1 (3-2) through the composite metal oxide packing column (7), and first catalyzes through the composite metal oxide packing column (7) in the catalytic oxidation tank 1 (3-2) Oxidation reaction, then carry out catalytic oxidation reaction under the catalysis of microwave electrodeless lamp-ultraviolet light box (8), through above-mentioned two steps, finish 60-80% catalytic oxidation reaction;

[0042] 4), the mixed solution enters...

Embodiment 2

[0047] 1), the tail water of the secondary biochemical treatment process is collected into the mixing reaction tank 1 (3-1) through the water inlet pump (2);

[0048] 2), in the mixed reaction tank 1 (3-1), add known Concentrated hydrogen peroxide, ferrous iron and flow acid are stirred and mixed by the stirrer (6), so that the tail water and the medicament are fully mixed, and the pH value is adjusted to 5.5-6.5. Carry out preliminary catalytic oxidation reaction under catalysis;

[0049] 3), the mixed solution enters the catalytic oxidation tank 1 (3-2) through the composite metal oxide packing column (7), and first catalyzes through the composite metal oxide packing column (7) in the catalytic oxidation tank 1 (3-2) Oxidation reaction, then carry out catalytic oxidation reaction under the catalysis of microwave electrodeless lamp-ultraviolet light box (8), through above-mentioned two steps, finish 80-90% catalytic oxidation reaction;

[0050] 4), the mixed solution enters...

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Abstract

The invention discloses a technology and a device for composite type advanced catalytic oxidation and belongs to the field of advanced wastewater treatment. According to the technology and the device for composite type advanced catalytic oxidation, a Fenton technology, a photo-catalytic oxidation technology and a metal catalytic oxidation technology are combined, the rate for producing hydroxyl radicals with strong oxidation capacity is increased under the catalytic conditions of metal and light, by means of chemical reactions such as hydroxyl addition, substitution, electron transfer and the like of the formed hydroxyl radicals with pollutants, most organic compounds can be mineralized or decomposed, one part is mineralized and precipitated, the other part of macromolecular compounds are decomposed into low-toxicity or toxicity-free micromolecular substances, certain compounds are even directly decomposed into water and carbon dioxide, and the wastewater treatment effect is realized. On the basis of catalytic oxidation, catalysts and agent feeding addition are optimized, different types of catalysts are used in different contact time, the agent consumption is reduced substantially, the comprehensive energy consumption is reduced effectively, and organic compounds difficult to decompose in wastewater are removed in a targeted manner. With use of multiple catalysts, the efficiency is doubled or more that of a common ozone catalyst or other strong oxidants, and accordingly, the operation cost is reduced greatly.

Description

technical field [0001] The invention discloses a composite advanced catalytic oxidation process and device, belonging to the field of advanced sewage treatment. Background technique [0002] With the rapid development of economy and the acceleration of urbanization, water pollution in my country's river basins is becoming more and more serious. Pollutants in key river basins across the country mainly come from industrial pollution, urban domestic pollution and agricultural non-point source pollution. The water quality and quantity of industrial wastewater in different industries vary greatly, the concentration of pollutants is high, the nutrients are unbalanced, and the water quality components are very complex. Therefore, for industrial parks, especially comprehensive industrial parks, the quality of wastewater is quite complicated. In order to save sewage treatment costs, domestic industrial parks often use centralized wastewater treatment models to treat park wastewater,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08C02F101/30
CPCC02F9/00C02F2101/30C02F2209/08C02F2209/06C02F2305/026C02F2305/023C02F2301/08C02F1/302C02F1/32C02F1/66C02F1/725C02F1/722C02F1/52
Inventor 陈振国任伟练慧
Owner SUZHOU FANGZHOU ENVIRONMENTAL PROTECTION TECH CO LTD
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