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Waste emulsion treatment method and device

A waste emulsion and treatment method technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve problems such as high temperature, waste of energy, and long treatment time

Active Publication Date: 2017-03-22
SHANGHAI EMPEROR OF CLEANING HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problem that in the process of waste emulsion treatment in the prior art, the biochemical reaction stage must be broken after demulsification and coagulation sedimentation, resulting in large equipment footprint, high operating costs, and high processing costs. It takes a long time, and in the method of demulsification in the prior art, the emulsion needs to be heated to above 80°C, which has defects such as high temperature and waste of energy. A treatment method and treatment device for waste emulsion are provided

Method used

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  • Waste emulsion treatment method and device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The water quality composition of a waste emulsion is shown in Table 1.

[0053] figure 1 It is a schematic diagram of the processing device of the waste emulsion of Example 1. Among them, the arrow direction is the trend of the waste emulsion in the process flow.

[0054] The above device includes a first water tank 1, a second water pump 802, a solid-liquid separation high-frequency vibrating membrane processor 2, a third water pump 803, a biochemical processor 3, a fourth water pump 804, an ozone oxidation processor 4, a fifth Water pump 805 , second water tank 5 , sixth water pump 806 , activated carbon filter 6 , third water tank 7 , first water pump 801 .

[0055] The solid-liquid separation high-frequency vibrating membrane processor 2 is provided with a vibration center rod 201, and a vibration exciter 202 is provided at the bottom.

[0056] The biochemical processor 3 is sequentially provided with an anaerobic processor 301, an aerobic contact oxidation proce...

Embodiment 2

[0067] The water quality components of a certain waste emulsion are shown in Table 1. Using the treatment device in Example 1, the process for treating the waste emulsion includes the following steps:

[0068] (1) The 45°C waste emulsion is treated by a high-frequency vibrating membrane processor for solid-liquid separation after passing through the feed pump; wherein, the feed water pressure is 2.0MPa, the feed pump frequency is 27.3Hz, the vibration exciter frequency is 46.3Hz, and the concentrated water pressure is 2.0MPa;

[0069] (2) The water produced by the high-frequency vibrating membrane processor for solid-liquid separation is directly subjected to anaerobic treatment, aerobic contact oxidation treatment, and MBR membrane filtration treatment in sequence; among them, the residence time of anaerobic treatment is 48h, the residence time of aerobic treatment is 72h, and the MBR treatment The residence time of membrane treatment is 20h; the aerobic contact oxidation tre...

Embodiment 3

[0074] The water quality components of a certain waste emulsion are shown in Table 1. Using the treatment device in Example 1, the process for treating the waste emulsion includes the following steps:

[0075] (1) The 45°C waste emulsion is treated by a high-frequency vibrating membrane processor for solid-liquid separation after passing through the feed pump; wherein, the feed water pressure is 2.0MPa, the feed pump frequency is 27.3Hz; the vibration exciter frequency is 46.3Hz, and the concentrated water pressure is 2.0MPa;

[0076] (2) The water produced by the high-frequency vibrating membrane processor for solid-liquid separation is directly subjected to anaerobic treatment, aerobic contact oxidation treatment, and MBR membrane filtration treatment in sequence; among them, the residence time of anaerobic treatment is 48h, the residence time of aerobic treatment is 72h, and the MBR treatment The residence time of membrane treatment is 20h; the aerobic contact oxidation tre...

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Abstract

The invention discloses a waste emulsion treatment method and a waste emulsion treatment device. The treatment method comprises the following steps: treating a waste emulsion to be treated at a temperature of 18-60 DEG C by a solid-liquid separation high-frequency vibration membrane treater, and performing anaerobic treatment; performing aerobic contacting oxidation treatment; performing MBR filtration, performing ozonation treatment on the obtained liquid, and performing filtering to remove residual suspended solids, wherein the packing in an ozonation treatment device is a supported catalyst AODO. The treatment process disclosed by the invention is compact in flow, small in occupied area, low in operating cost and short in treatment time, the treated waste emulsion is nearly colorless and basically odorless, the effluent quality in the whole process can completely meet the secondary standard requirements in the Integrated Wastewater Discharge Standard (GB8978-1996), and the treatment process has extremely high popularization value in other high-difficulty organic wastewater treatment.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, in particular to a treatment method and a treatment device for waste emulsion. Background technique [0002] With the rapid development of my country's industry, the use of emulsions is increasing, and at the same time, the discharge of waste emulsions is also increasing. In the machining industry, metal cutting and grinding need to use a large amount of emulsion for lubrication and cooling. The emulsion mainly contains oil and surfactant, which is prepared by diluting emulsified oil with water and adding emulsifier as needed, and In the emulsion used for machine tool cutting, in order to improve the rust resistance of the emulsion, sodium nitrite is also added. However, after repeated use of the emulsion, various degrees of rancidity will occur, and the performance will be reduced. The new emulsion should be replaced regularly, so a large amount of waste emulsion will be produced....

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 王炜
Owner SHANGHAI EMPEROR OF CLEANING HI TECH
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