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Application of brucite in ozonization treatment of organic wastewater

A technology of organic waste water and brucite, applied in the directions of oxidized water/sewage treatment, neutralized water/sewage treatment, etc., can solve the problems of reducing the efficiency of ozone oxidation, so as to solve the problem of acidification of water body, reduce operating costs, and simplify the process. Effect

Inactive Publication Date: 2005-11-23
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When ozone is used to treat refractory organic matter, it can partially open rings or partially break long-chain molecules in polycyclic aromatic hydrocarbons, heterocyclic compounds, and organic synthetic polymers, turning macromolecular substances into small molecular substances and forming Substances that are easy to degrade such as: monoaldehyde, dialdehyde, aldehyde acid, monocarboxylic acid, dicarboxylic acid organic small molecules, the formation of these acidic substances acidify the water body, thereby reducing the oxidation efficiency of ozone

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1. The method of mordenite rock loading Cu

[0015] First, natural mordenite rock powder (200 mesh) was impregnated in Cu(NO 3 ) 2 In the solution (solid / liquid=1:3), the temperature is 80°C, and the stirring speed is 120r / min, and the immersion time is 6h-24h respectively.

[0016] Then wash repeatedly with water until no Cu can be detected in the washing water. 2+ After separation by centrifugation or filtration, dry at 120°C for 12h, place in a muffle furnace and bake at 450°C for 12h, and finally obtain the copper-loaded mordenite used in this experiment. The content of copper oxide in the sample after firing is 3% (2.91-3.17%).

Embodiment 2

[0017] Embodiment 2. Ozonation treatment organic wastewater

[0018] Cu-mordenite powder and natural attapulgite with a particle size of 100 mesh were pressed by M Cu-丝光沸石 / M 凹凸棒石 = 1:1, mixed, compounded into Cu-mordenite / attapulgite mineral additive, numbered compound 1. The Cu-mordenite and the crushed particle size are 100 mesh natural brucite by M Cu-丝光沸石 / M 水镁石 =The mass ratio of 2:1 is mixed with the ratio of 1:1 to compound into Cu-mordenite / brucite composite catalyst, and the numbers are compound 2 and compound 3.

[0019] The biodegradable organic wastewater reactive brilliant red-X-3B dye wastewater and mineral additives are mixed according to the mass ratio of 50:2. The dye wastewater was aerated with an ozone aeration device. 50ml of Reactive Brilliant Red-X-3B dye wastewater prepared with distilled water at an initial concentration of 500mg / L was subjected to separate ozonation for 5-40min under ozone aeration. The results were compared with the ozonation w...

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Abstract

The invention relates to the use of brucite in ozonization treatment of organic wastewater characterized in that, organic waste water is charged into natural mineral Brucite-ozone aeration devices (including the various forms of tanks, towers, beds or jugs). The invention can reduce the operation cost for ozonization technique in waste-water treatment, and solves the problem of water body acidification, the clearance of COD can reach 70%.

Description

technical field [0001] The invention relates to a method for improving the efficiency of ozonation treatment of organic wastewater, specifically, placing natural mineral brucite or brucite and zeolite in the organic wastewater in an ozone aeration device (pool, tower, bed, tank) Or attapulgite to improve the efficiency of ozonation treatment of organic wastewater. Background technique [0002] Ozone can effectively remove pollutants in wastewater, reduce COD and BOD, and have significant effects on decolorization, deodorization, sterilization, control and elimination of germs, etc. However, the operating cost (power consumption) of ozone equipment is relatively high. The combination of ozone and other technologies is a common method: including: ①O 3 / H 2 o 2 ; ②O 3 / UV; ③O 3 / solid catalyst (metal and metal oxide), etc. [0003] When ozone is used to treat refractory organic matter, it can partially open rings or partially break long-chain molecules in polycyclic aro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78
Inventor 尹琳赵波
Owner NANJING UNIV
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