Ozone pressurized dissolved air tank and sewage advanced treatment system applied by ozone pressurized dissolved air tank

A pressurized gas-dissolving and advanced treatment technology, which is applied in the field of sewage treatment and water treatment systems, can solve the problems of low utilization rate, achieve the effect of improving the effect, increasing the contact time, and increasing the solubility of ozone

Pending Publication Date: 2022-04-08
HUNAN HUAYI MUNICIPAL ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide an ozone pressurized gas-dissolving tank and a water treatment system for its application in view of the low utilization rate of ozone gas in the treatment of sewage by forming a gas-liquid multiphase reaction through aeration

Method used

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  • Ozone pressurized dissolved air tank and sewage advanced treatment system applied by ozone pressurized dissolved air tank
  • Ozone pressurized dissolved air tank and sewage advanced treatment system applied by ozone pressurized dissolved air tank
  • Ozone pressurized dissolved air tank and sewage advanced treatment system applied by ozone pressurized dissolved air tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] see figure 1, the sewage advanced treatment system in the illustration is a specific embodiment of the present invention, including an ozone inlet pipeline 1, a sewage water inlet pipeline 2, an ozone pressurized gas-dissolving tank 3, a gas release pipeline 4, and a liquid release pipeline 5 And ozone reaction tower 6, wherein ozone inlet line 1 is used to generate ozone gas and be transported in the ozone pressurized air-dissolving tank 3, it is connected with the air inlet of ozone pressurized air-dissolving tank 3, sewage water inlet pipeline 2 It is used to transport the preliminary treated sewage into the ozone pressurized dissolving tank 3, which is connected to the water inlet of the ozone pressurized dissolving tank 3. The ozone pressurized dissolving tank 3 has a pressure-sealed tank body to improve internal input The dissolution rate of the ozone gas in the sewage, the ozone pressurized gas dissolving tank 3 is connected with the water inlet of the ozone reac...

example 1

[0058] Use the ozone pressurized air-dissolving tank and sewage advanced treatment system in the above examples to treat the effluent of the papermaking wastewater secondary sedimentation tank, the inflow water is 1m3 / h, the temperature is 20°C, air V: oxygen V=1:1, ozone pressurized air-dissolving The pressure inside the tank is maintained at 0.3Mpa, the ozone concentration at the outlet of the ozone generator is 80mg / l, and the gas-water ratio is 30%. The residence time of sewage in the ozone pressurized dissolved air tank is 10min, the residence time of sewage in the ozone reaction tower is 30min, and the packing density of iron shavings is 300g / L. The COD of the raw water is 156mg / l, the COD of the effluent treated by the ozone pressurized air-dissolving tank is 88mg / l, and the COD of the effluent treated by the ozone reaction tower is 47mg / l.

example 2

[0060] Use the ozone pressurized air-dissolving tank and sewage advanced treatment system in the above example to treat the effluent of the pharmaceutical wastewater secondary sedimentation tank, the inflow water is 1m3 / h, the temperature is 20°C, air V: oxygen V=1:1.5, ozone pressurized air-dissolving The pressure inside the tank is maintained at 0.4Mpa, the ozone concentration at the outlet of the ozone generator is 100mg / l, and the gas-water ratio is 30%. The residence time of sewage in the ozone pressurized dissolved air tank is 15 minutes, the residence time of sewage in the ozone reaction tower is 30 minutes, and the packing density of iron shavings is 300g / L. The COD of the raw water is 146mg / l, the COD of the effluent treated by the ozone pressurized air-dissolving tank is 91mg / l, and the COD of the effluent treated by the ozone reaction tower is 53mg / l.

[0061] It can be seen that the COD in the secondary effluent treated by the ozone pressurized air-dissolving tank ...

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Abstract

The invention discloses an ozone pressurized dissolved air tank and a sewage advanced treatment system applying the ozone pressurized dissolved air tank, an air inlet of the ozone pressurized dissolved air tank is connected with an ozone inlet pipeline, and a water inlet of the ozone pressurized dissolved air tank is connected with a sewage inlet pipeline; the ozone pressurized dissolved air tank is connected with a water inlet of the ozone reaction tower through a liquid release pipeline, and a gas release pipeline connected with the ozone pressurized dissolved air tank is connected with the liquid release pipeline at the water inlet of the ozone reaction tower. The advantages of pressurized gas dissolving are fully exerted, the ozone solubility in the ozone pressurized gas dissolving tank is improved, the effect of ozone on sewage oxidation treatment is improved, meanwhile, gas-water jet flow is formed in the ozone reaction tower through ozone gas which is not completely dissolved in the ozone pressurized gas dissolving tank and a pressure relief process, and the ozone gas in the ozone reaction tower is discharged. A heterogeneous catalysis ozone microbubble reactor system is constructed, the ozone oxidation reaction efficiency and the utilization rate are remarkably improved, and utilization of residual ozone and secondary deep purification of sewage are achieved.

Description

technical field [0001] The invention relates to an ozone pressurized air-dissolving tank and a water treatment system applied thereto, belonging to the sewage treatment technology. Background technique [0002] With the increasingly stringent national environmental protection requirements, it is difficult for traditional treatment technologies to treat sewage up to standard, especially the secondary effluent after biochemical treatment, which is already classified as refractory organic wastewater, and advanced treatment is an important guarantee to ensure that sewage purification meets standard discharge. [0003] As a green and efficient water treatment technology, ozone oxidation technology can oxidize and degrade most organic substances; at the same time, this technology has the characteristics of fast reaction rate, almost no chemical residues and secondary pollution, etc. It has more and more extensive application prospects. As we all know, gas-liquid mass transfer eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78B01F23/20B01F33/71C02F101/30
Inventor 刘玉莎陈剑林达曾科汤桂腾覃晖刘妮
Owner HUNAN HUAYI MUNICIPAL ENG DESIGN
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