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Fenton synergistic ozone wastewater treatment device and wastewater treatment method thereof

A technology for ozone treatment and wastewater treatment, applied in the directions of oxidized water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of high wastewater cost, low ozone solubility, low ozone utilization rate, etc., to reduce wastewater Pollution load, efficient mass transfer efficiency, the effect of improving the removal effect

Active Publication Date: 2017-01-25
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the solubility of ozone in wastewater is low, and the utilization rate of ozone in the wastewater treatment process is low. Part of the unreacted ozone is discharged with the tail gas, which has become one of the main reasons for the high cost of ozone treatment wastewater

Method used

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  • Fenton synergistic ozone wastewater treatment device and wastewater treatment method thereof

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Comparison scheme
Effect test

Embodiment 1

[0052] In this embodiment, a Fenton cooperative ozone treatment wastewater treatment device is used to treat the waste water of southern hardwood pulp D0 / C-(EO)PD1 bleaching wastewater after hydrolysis acidification and activated sludge treatment, and the COD of the wastewater cr 320 mg / L, BOD 5 It is 60 mg / L and the color is 630 C.U.

[0053] A method for treating southern hardwood pulp bleaching wastewater using a Fenton and ozone treatment wastewater device includes the following steps and process conditions:

[0054] (1) Pretreatment: The effluent from the secondary sedimentation tank is pumped into the pretreatment tower 9 through the water distribution pipe 12 at the bottom of the pretreatment tower 9, and the ozone-oxygen mixed gas tail gas from the gas collection device 7 at the top of the catalytic oxidation tower 1 passes through The air distribution pipe 13 arranged at the bottom of the pretreatment tower 9 enters the pretreatment tower 9; the ozone-oxygen mixed gas and w...

Embodiment 2

[0061] In this embodiment, a Fenton cooperative ozone treatment wastewater device is used to treat waste paper deinking pulping wastewater after IC tower and SBR treatment, and the COD of wastewater cr It is 390 mg / L and the color is 650 C.U.

[0062] A method for treating southern hardwood pulp bleaching wastewater using a Fenton and ozone treatment wastewater device includes the following steps and process conditions:

[0063] (1) Pretreatment: The effluent from the secondary sedimentation tank is pumped into the pretreatment tower 9 through the water distribution pipe 12 at the bottom of the pretreatment tower 9, and the ozone-oxygen mixed gas tail gas from the gas collection device 7 at the top of the catalytic oxidation tower 1 passes through The air distribution pipe 13 arranged at the bottom of the pretreatment tower 9 enters the pretreatment tower 9; the ozone-oxygen mixed gas and wastewater are fully and evenly mixed at the bottom of the pretreatment tower 9 and enter the p...

Embodiment 3

[0070] In this embodiment, a Fenton cooperative ozone treatment wastewater device is used to treat waste paper and papermaking wastewater after hydrolysis acidification and SBR treatment, and the COD of the wastewater cr It is 230 mg / L and the color is 320 C.U.

[0071] A method for treating southern hardwood pulp bleaching wastewater using a Fenton and ozone treatment wastewater device includes the following steps and process conditions:

[0072] (1) Pretreatment: The effluent from the secondary sedimentation tank is pumped into the pretreatment tower 9 through the water distribution pipe 12 at the bottom of the pretreatment tower 9, and the ozone-oxygen mixed gas tail gas from the gas collection device 7 at the top of the catalytic oxidation tower 1 passes through The air distribution pipe 13 arranged at the bottom of the pretreatment tower 9 enters the pretreatment tower 9; the ozone-oxygen mixed gas and wastewater are fully and evenly mixed at the bottom of the pretreatment towe...

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Abstract

The invention discloses a Fenton synergistic ozone wastewater treatment device and a wastewater treatment method thereof. The device comprises a pretreatment tower (9), a catalytic oxidation tower (1), an aftertreatment tower (27), a chemical reagent preparation system (30), an ozone supply system and a clear water tank (29). The wastewater treatment method of the device comprises the following steps: (1) pretreatment; (2) catalytic oxidation treatment; and (3) aftertreatment. By adopting the device for wastewater treatment, the wastewater treatment efficiency can be raised, the removal effect of COD and chroma of the wastewater is improved, the dosage of chemical reagent is reduced, and the ozone utilization rate is high.

Description

Technical field [0001] The invention relates to a waste water treatment device and a waste water treatment method, in particular to a Fenton cooperative ozone treatment waste water treatment device and a waste water treatment method. Background technique [0002] The paper industry is one of the main sources of wastewater and pollutant discharge in my country. Papermaking wastewater contains a certain concentration of lignin degradation products and other difficult-to-biodegradable organics, causing the papermaking wastewater to still contain higher concentrations of organic pollutants after secondary biological treatment, which cannot meet the national discharge standards and must be further treated. To reduce the impact on the environment. [0003] Fenton catalytic oxidation technology is currently one of the effective ways to degrade and remove difficult-to-biodegradable organics in wastewater. It has the advantages of mild reaction conditions, fast reaction speed, and good tre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/78C02F3/00C02F1/722C02F1/725C02F1/5245C02F1/56
Inventor 雷利荣张成李友明
Owner SOUTH CHINA UNIV OF TECH
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