Integrated ozone and aeration biological filtering pool water treatment apparatus and method

A biological aerated filter and water treatment device technology, which is applied in the field of water treatment and advanced treatment of waste water containing refractory biodegradable organic matter, and can solve problems such as difficult construction and installation, unbalanced flow, increased floor space and operating costs. , to achieve the effect of reducing the difficulty of construction and installation, reducing power consumption and improving aeration efficiency

Active Publication Date: 2007-11-14
SOUTH CHINA UNIV OF TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, the biological aerated filter of this method needs to install an aeration system (including aeration pipe, aeration head), and the construction and installation are difficult; at the same time, a special fan is required to inflate the biological aerated filter to supply oxygen, and the ozonated Water also needs to be installed with water pumps and pipelines to be pumped into the biological aerated filter, which increases the floor area and operating costs to a certain extent; there is also the problem of unbalanced flow between the biological aerated filter and the ozonation buffer tank, which affects water treatment Effect

Method used

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  • Integrated ozone and aeration biological filtering pool water treatment apparatus and method

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Embodiment 1

[0024] The ozone-biological aerated filter integrated water treatment method is used to carry out advanced treatment of the secondary biochemical effluent of a printing and dyeing factory wastewater, with a water volume of 5t / h. The Venturi tube used is made of stainless steel with a size of 50mm outer teeth. The ozone generating system adopts an ozone production rate of 300g / h. The model of the ozone generator is: SOZ-YW-300G. The oxygen content in the ozone gas is 19% of the total volume. The ozone contact reaction chamber is cylindrical and the total volume is about 10m 3 , the height is 1.2m, the radius is about 1.5m, and the total volume of the biological aerated filter is 20m 3 , the height is 4.4m, the radius is about 1.2m, the filter material is 3-5mm ceramsite, and the volume of ceramsite is 12m 3 . Firstly, through ozone pretreatment, the dosage of ozone is 0.5:1 mass ratio of ozone to COD, the reaction time of ozone in the contact oxidation chamber is 2 hours, and...

Embodiment 2

[0028] The ozone-biological aerated filter integrated water treatment method is used to carry out the depth of the secondary biochemical effluent of a paper mill wastewater, and the water volume is 10t / h. The Venturi tube used is made of stainless steel with a size of 50mm outer teeth. The ozone generation system adopts an ozone production capacity of 250g / h. The model of the ozone generator is: SOA-YW-250G. The oxygen contained in the ozone gas is 19% of the total volume. %, the ozone contact reaction chamber is cylindrical, with a total volume of about 10m 3 , the height is 0.8m, the radius is about 2m, and the total volume of the biological aerated filter is 30m 3 , the height is 3m, the radius is about 1.8m, the filter material is 3-5mm ceramsite, the volume of ceramsite is 18m 3 . Firstly, through ozone pretreatment, the dosage of ozone is 0.5:1 mass ratio of ozone to COD, the reaction time of ozone in the contact oxidation chamber is 1 hour, and the wastewater after oz...

Embodiment 3

[0032] The ozone-biological aerated filter integrated water treatment method is used to treat the polluted raw water of a waterworks, and the water volume is 10t / h. The Venturi tube used is made of stainless steel, with a size of 63mm outer teeth. The ozone generation system adopts an ozone generation rate of 12g / h. The model of the ozone generator is: SOZ-YW-12G, and the oxygen contained in the ozone gas is 20% of the total volume. %, the ozone contact reaction chamber is cylindrical, with a total volume of about 10m 3 , the height is 1.5m, the radius is about 1.5m, and the total volume of the biological aerated filter is 15m 3 , the height is 3.3m, the radius is about 1.2m, and the filter material is 3-5mm ceramsite. The dosage of ozone is that the mass ratio of ozone to COD is 0.1:1, and the reaction time of ozone in the contact oxidation chamber is 1 hour. The residence time of the filter is 1 hour, and the COD removal rate of this treatment method is 90%. The average C...

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Abstract

This invention relates to water disposal facility and means of integrated ozone and aerating biological filter. This aerating biological filter(9) is above ozone catalysis chamber(8), connects with ozone catalysis chamber(8) through the filter plate of biological filter(9); ozone catalysis chamber joints with Venturi tube(5), Venturi tube(5) respectively joints with ozone occurring system(6) and influent water pump(1); ozone occurring system(6) is a ozonizer that by silent discharge method translate oxygen of air into ozone. The water after pretreatment by ozone passes the filter plate of the aeration biological filter pool at the top of the ozone reaction chamber to enter the biological filter pool uniformly and stay for about 1 to 4 hours. This invention can advance aerating efficiency without fixing aerating system, and the flow between aerating biological filter and ozonization buffer pool cell is equilibrium, possess merits of high efficiency, low cost and so on.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to the field of advanced treatment of polluted raw water and waste water, especially waste water containing refractory biodegradable organic matter, by using an integrated water treatment method of ozone and biological aerated filter. Background technique [0002] Ozone has extremely strong oxidizing properties, and its oxidizing ability is second only to fluorine, higher than chlorine and potassium permanganate. Based on the strong oxidizing properties of ozone, it can be decomposed in water in a short time without secondary pollution, so it is an ideal green oxidizing agent. 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 difficult-to-biodegradable pollutants in water. However, if ozone is used alone to mineralize difficult-to-biodegradab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/02C02F1/78
CPCY02W10/10
Inventor 汪晓军顾晓扬陈思莉
Owner SOUTH CHINA UNIV OF TECH
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