Advanced treatment method of integrated catalytic ozonation-biological aerated filter water

A technology of ozone catalytic oxidation and biological aerated filter, which is applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc. It can solve the problems that the stability of treatment effect needs to be further improved, and achieve protection Effects of biomass and biological activity, accelerated decomposition, and improved ozone use efficiency

Inactive Publication Date: 2014-03-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ozone oxidation efficiency and ozone oxidation decomposition rate of this patent need to be further improved, the adaptability of the device to ozone load fluctuations needs to be improved, and the stability of the treatment effect needs to be further improved

Method used

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  • Advanced treatment method of integrated catalytic ozonation-biological aerated filter water

Examples

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Embodiment 1

[0023]The integrated ozone catalytic oxidation aerated biological filter water treatment device is used for advanced treatment of the secondary biochemical effluent of a printing and dyeing factory. The bottom (ozone catalytic oxidation zone) is filled with ozone catalytic oxidizer, the upper part is covered with ordinary biological ceramsite, and the filter tank is Upflow biological aerated filter. Ozone catalytic oxidant ceramsite is prepared according to Example 4 of 201310268105.0, and the production of ceramsite with a particle size of 6-7mm; ordinary biological ceramsite is obtained by sintering at 900-1200°C by using fly ash, kaolin, and expanding agent as raw materials; The filling height of the catalytic oxidant is about 1m; the filling height of ordinary biological ceramsite is about 2.5m; the water treatment volume in this example is 5t / h, and the mass ratio of ozone dosage to COD is 0.5:1. The reaction time of ozone in the contact oxidation chamber is 2 hours. The ...

Embodiment 2

[0026] The integrated ozone catalytic oxidation-biological aerated filter water treatment method is used for advanced treatment of the secondary biochemical effluent of a paper mill, with a water volume of 10t / h. The bottom (ozone catalytic oxidation zone) is filled with ozone catalytic oxidizer, the upper part is covered with ordinary biological ceramsite, and the filter is an upflow biological aerated filter. The mass ratio of ozone dosing to COD is 0.5:1, and the ozone catalytic oxidant ceramsite is prepared with reference to Example 3 of 201310268105.0 to produce ceramsite with a particle size of 5-6mm; common biological ceramsite uses fly ash, kaolin, and swelling agent as The raw materials are obtained by sintering at 900-1200°C; the filling height of the ozone catalytic oxidant is 0.9m; the filling height of ordinary biological ceramsite is about 2.5m; The treated wastewater enters the biological aerated filter at the upper end of the ozone contact oxidation chamber, th...

Embodiment 3

[0028] The integrated ozone catalytic oxidation-biological aerated filter water treatment method is used to treat the polluted raw water of a waterworks, with a water volume of 10t / h. The bottom (ozone catalytic oxidation zone) is filled with ozone catalytic oxidizer, the upper part is covered with ordinary biological ceramsite, and the filter is an upflow biological aerated filter. The mass ratio of ozone dosage to COD is 0.1:1, and the ozone catalytic oxidant ceramsite is prepared according to Example 4 of 201310268105.0 to produce ceramsite with a particle size of 5-6mm; ordinary biological ceramsite uses fly ash, kaolin, and swelling agent as The raw materials are obtained by sintering at 900-1200°C; the filling height of ozone catalytic oxidizer is 1m; the filling height of ordinary biological ceramsite is 2m; the reaction time of ozone in the contact oxidation chamber is 1 hour. Wastewater enters the biological aerated filter at the upper end of the ozone contact oxidati...

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Abstract

The invention discloses a method for treating water by an integrated catalytic ozonation-biological aerated filter device. The method comprises the steps of mixing water from a water inlet water pump with ozone which comes from an ozone generation system and contains oxygen in a main pipeline of waste water, entering the mixture evenly into a catalytic ozonation zone through a filter plate which is arranged at the bottom of a catalytic ozonation reaction zone, wherein the upper end of a catalytic ozonating agent ceramsite is filled with a common biological ceramsite, wherein the filling height of the catalytic ozonating agent ranges 0.3n to 1m; and thoroughly oxidizing and decomposing the waste water and the ozone under the catalytic action of the catalytic ozonating agent ceramsite in the catalytic ozonation zone and then flowing up to the upper biological aerated filter. According to the invention, nonbiodegradable organic matters in water are destructed and treated through catalytic ozonation pretreatment and then converted into biodegradable organic matters, and further biochemically treated by using the biological aerated filter; as a result, the advantages of the biological aerated filter are brought into play thoroughly and the waste water containing the biodegradable organic matters are effectively treated.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to an integrated water treatment method utilizing ozone, catalytic oxidation of ozone and biological aerated filter, the method is applied to the advanced treatment of polluted raw water and waste water, especially waste water containing refractory biodegradable organic matter field. Background technique [0002] Ozone has extremely strong oxidizing properties, and its oxidizing ability is second only to fluorine, higher than chlorine and potassium permanganate. Ozone is an ideal green oxidant for water treatment based on its strong oxidizing properties, and it can decompose itself in water in a short period of time without secondary pollution. At present, ozone technology has been applied in many aspects in the field of water treatment. Ozone not only has a strong disinfection and sterilization effect, but also can oxidize and remove pollutants that are difficult to biodegrade in w...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/78
Inventor 汪晓军刘智颖陈振国顾晓扬
Owner SOUTH CHINA UNIV OF TECH
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