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Two-stage micro/nano aeration and catalytic ozonation wastewater treatment system

A wastewater treatment system, micro-nano aeration technology, applied in the direction of oxidation water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the discount of micro-nano aeration effectiveness, has not been fully developed and other issues, to achieve the effect of improving ozone utilization efficiency, reducing consumption, and achieving efficiency

Active Publication Date: 2015-06-17
SUZHOU HUILONG FILTER MEMBRANE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although micro-nano aeration can effectively improve the solubility of ozone, and thus improve the utilization rate of ozone, in actual operation, the improvement of ozone solubility by micro-nano bubbles is often emphasized, while its promotion effect on the production of OH on the catalyst surface is ignored, resulting in The effectiveness of micro-nano aeration is greatly reduced
Ozone bubbles of different scales have different mechanisms for producing OH on the surface of the catalyst, the amount of OH produced is different, and the requirements for external environmental conditions are also different. These characteristics have not been fully developed so far.

Method used

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  • Two-stage micro/nano aeration and catalytic ozonation wastewater treatment system
  • Two-stage micro/nano aeration and catalytic ozonation wastewater treatment system
  • Two-stage micro/nano aeration and catalytic ozonation wastewater treatment system

Examples

Experimental program
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Effect test

Embodiment 1

[0033] 1) Turn on the lift pump 1, and the raw water is pumped into the water inlet of the first-stage catalytic reactor 2 through the lift pump 1;

[0034] 2) Turn on the first-stage ozone generator, the raw water enters from top to bottom in the first-stage catalytic reactor 2, and cross-flow mixes with the micron ozone aeration liquid in the first-stage ozone reactor 3, and the effluent of the first-stage catalytic reactor 2 It mainly flows into the micro-nano bubble generator through the water inlet of the micro-nano bubble generator 5, and the bottom of the primary catalytic reactor 2 is provided with a sewage outlet for regular backwashing and sewage discharge;

[0035] 3) Turn on the ozone generator 7 and the micro-nano bubble generator 5. The micro-nano bubble generator 5 fully mixes the effluent in the primary catalytic reactor with the ozone generated by the secondary ozone generator, and generates a large amount of ozone micro-nano bubbles. The gas-water mixture flows...

Embodiment 2

[0044] 1) Turn on the lift pump 1, and the raw water is pumped into the water inlet of the first-stage catalytic reactor 2 through the lift pump 1;

[0045] 2) Turn on the first-stage ozone generator, the raw water enters from top to bottom in the first-stage catalytic reactor 2, and cross-flow mixes with the micron ozone aeration liquid in the first-stage ozone reactor 3, and the effluent of the first-stage catalytic reactor 2 It mainly flows into the micro-nano bubble generator through the water inlet of the micro-nano bubble generator 5, and the bottom of the primary catalytic reactor 2 is provided with a sewage outlet for regular backwashing and sewage discharge;

[0046] 3) Turn on the ozone generator 7 and the micro-nano bubble generator 5. The micro-nano bubble generator 5 fully mixes the effluent in the primary catalytic reactor with the ozone generated by the secondary ozone generator, and generates a large amount of ozone micro-nano bubbles. The gas-water mixture flo...

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Abstract

The invention discloses a two-stage micro / nano aeration and catalytic ozonation wastewater treatment system which comprises a raw water lift pump, a two-stage ozone generator, a two-stage catalytic ozonation reactor, a titanium microporous aeration device, a micro / nano bubble generation pump, a gas-liquid mixing stable tank and a tail gas absorption tank, wherein a first-stage catalytic reactor is used for aeration in the presence of a binary iron-manganese base catalyst by virtue of a titanium alloy micron aerator and the size of bubbles is 5-10microns; a water inlet is located at the upper part of the first-stage reactor in a cross-flow manner; the two-stage reactor is used for aeration in the presence of a ternary load type catalyst through the micro / nano bubble generation pump and the size of the bubbles is 100-400nm; a gas flow and a liquid flow are mixed and then are treated from bottom of the two-sage reactor from to top; and a water producing opening of the system is formed at the upper part of the two-stage reactor. According to the two-stage micro / nano aeration and catalytic ozonation wastewater treatment system, the two-stage reactor is respectively aerated through micron bubbles and nano bubbles, so that the OH generation quantity and catalysis efficiency are improved; and the cost of the system is greatly reduced.

Description

field of invention [0001] The invention relates to the technical field of industrial water treatment application, in particular to a two-stage micro-nano aeration catalytic ozonation wastewater treatment system. technical background [0002] At present, the treatment of industrial wastewater containing complex and refractory organic matter is still a difficult problem, mainly manifested in the low degradation efficiency of oxides for organic matter and the high cost of treatment. Therefore, the development of efficient and low-cost advanced oxidation advanced treatment systems and methods is one of the research hotspots in the field of industrial water treatment. Ozone has a strong oxidizing and disinfecting ability, and is widely used in the field of industrial water supply and water purification treatment. However, in the field of industrial wastewater treatment, because of its insufficient oxidation ability and incomplete oxidation, it is selective for wastewater and limi...

Claims

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Application Information

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IPC IPC(8): C02F1/78C02F101/30
Inventor 蒋瞻程邓燕平杨海军
Owner SUZHOU HUILONG FILTER MEMBRANE ENG
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