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Device and method for advanced treatment of oily sludge by E<+>-micro-nano bubble ozone

A technology of micro-nano bubbles and advanced treatment, which is applied in the direction of oxidation treatment of sludge, water/sludge/sewage treatment, sludge treatment, etc., can solve the problems of poor ozone utilization rate and mass transfer efficiency, and achieve advanced treatment, The effect of improving separation efficiency and improving utilization rate

Active Publication Date: 2020-05-12
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object to be solved by the present invention is that, in order to solve the problem of poor utilization rate and mass transfer efficiency of simply utilizing ozone, a kind of E + -A device and method for advanced treatment of oily sludge with micro-nano bubble ozone

Method used

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  • Device and method for advanced treatment of oily sludge by E&lt;+&gt;-micro-nano bubble ozone
  • Device and method for advanced treatment of oily sludge by E&lt;+&gt;-micro-nano bubble ozone
  • Device and method for advanced treatment of oily sludge by E&lt;+&gt;-micro-nano bubble ozone

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specific Embodiment approach 1

[0050] Specific implementation mode one: a kind of E of this implementation mode + -Micro-nano bubble ozone coupling oily sludge advanced treatment device, such as figure 1 Shown; Mainly include: vibrating screen 1, E + -Micro-nano bubble ozone device 2, power supply 3;

[0051] The vibrating screen 1 and E + - The oily sludge inlet of the micro-nano bubble ozone device is connected;

[0052] The E + - The bottom of the micro-nano bubble ozone device 2 is provided with an aeration pan 4, and the ozone generator 5 is connected to the aeration pan 4 through an ozone concentration meter 6, a flow meter 7, and a fluid pump 8;

[0053] The E + -The inside of the micro-nano bubble ozone device 2 is provided with an agitator 9, and an oil scraper 10 is provided at the upper end;

[0054] The E + - Electrodes are respectively arranged on both sides inside the micro-nano bubble ozone device 2, and the electrodes are respectively connected to the positive and negative poles of th...

specific Embodiment approach 2

[0059] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the water content of the oily sludge is controlled at 75%-95%, the oil content is controlled at 5%-20%, the actual action intensity of the control current, The control voltage is 1V-15V, and the control current is 2A-10A.

[0060] Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0061] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the diameter of the oily sludge is less than or equal to 28 mm after the oily sludge is sifted through a vibrating screen.

[0062] Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a device and a method for advanced treatment of oily sludge by E<+>-micro-nano bubble ozone. The device comprises a vibrating screen, an E<+>-micro-nano bubble ozone device anda power supply, the oily sludge treated by the vibrating screen enters an E<+>-micro-nano bubble ozone device, the emulsification structure of the oily sludge is destroyed through ozone oxidation, and demulsification is further conducted through E<+> electrolysis at the upper end of the device; the O2 entrained by the aeration process and O3 which cannot be consumed by organic matters in time areconverted into H2O2, .OH and the like under the coupling action of E<+>-micro-nano bubble ozone, so that deep oxidation of oil substances is realized, and the oil substances are converted into carbondioxide and water; the micro-nano ozone floating bubbles bring demulsified oil drops to the liquid level, and the demulsified oil drops are recycled through an oil scraper. According to the method, an E<+>-micro-nano bubble ozone coupling method is adopted, air floatation, ozone and electrochemical synergistic oxidation is achieved, and meanwhile the multiple effects of oily sludge recycling, reduction, harmlessness and the like are achieved.

Description

technical field [0001] The invention belongs to the field of hazardous waste treatment, in particular to an E + -A device and method for advanced treatment of oily sludge with micro-nano bubble ozone. Background technique [0002] Grease trap bottom sludge, flotation tank scum, crude oil tank bottom sludge, etc., which are produced in the sewage treatment of oil refinery sewage treatment plants, are commonly known as "three muds". These sludges are composed of different contents of water, oil and solid substances and Contains benzene series, phenols, anthracene, pyrene, heavy metals and other odorous and toxic substances. It has the characteristics of complex composition, strong emulsification stability, high viscosity, and difficulty in completely settling solid phase components. As a national hazardous waste, the recycling, reduction and harmless treatment of oily sludge has become an urgent problem for various chemical companies to solve. [0003] my country's oily slud...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/06C02F11/00C02F101/30
CPCC02F11/06C02F11/006C02F2101/30
Inventor 楼紫阳孙智毅袁海平朱南文王辉杨凯艳王翊屏
Owner SHANGHAI JIAO TONG UNIV
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