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A kind of treatment method of oily waste water

A waste water and electrode technology, applied in water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of easy deactivation of enzymes and weak oxidation ability of organic pollutants, etc. To achieve a strong effect of stability

Active Publication Date: 2016-07-06
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the existing oily wastewater treatment methods, such as the enzyme is easily inactivated when the enzyme is used alone for catalytic degradation, and the electrolytic oxidation of the three-dimensional electrode reactor is not strong for the oxidation of organic pollutants. A treatment method for oily wastewater with high enzyme stability, strong catalytic oxidation ability and simple operation using a three-dimensional electrode in combination with an enzyme

Method used

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  • A kind of treatment method of oily waste water
  • A kind of treatment method of oily waste water
  • A kind of treatment method of oily waste water

Examples

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Embodiment 1-5

[0054] This example is used to illustrate the treatment method of oily wastewater of the present invention.

[0055] according to figure 1 The process shown in Table 1 and the parameters of each link of Examples 1-5 shown in Table 1 respectively treat the oily wastewater, specifically, the oily wastewater influent 1 is pumped into the coagulation tank through the pump 2, and the coagulant is added and coagulant, after 45min, the surface load is 0.8m 3 / (m 2 h) Settling in the sedimentation tank for 3.5h, then sent to the fiber filter by the pump 6 for filtration, and then sent the filtrate to the three-dimensional electrode reactor 9 for catalytic oxidation, wherein the conductivity of the influent 1 was 5.2-7.1mS / cm.

[0056]The water treatment control parameter of table 1 embodiment 1-5

[0057]

[0058]

Embodiment 6

[0060] The oily wastewater is treated according to the method of Example 1. The difference is that the water quality of the treated oily wastewater is different, specifically as shown in the influent 2 of Table 2 and Table 3, wherein the conductivity of the influent 2 It is 2.0-3.1mS / cm.

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Abstract

The invention discloses a treatment method for oily wastewater. The method includes: subjecting the oily wastewater to coagulation, sedimentation, filtration and catalytic oxidation in order. The method is characterized in that the catalytic oxidation is carried out in a three-dimensional electrode reactor, and the three-dimensional electrode reactor includes a cathode plate, an anode plate and a particle electrode filled between the cathode plate and the anode plate. The anode plate is a Ti-based metal oxide coating electrode, and the particle electrode is formed by laccase loaded activated carbon. According to the treatment method for oily wastewater, the synergistic effect between the laccase and the three-dimensional electrodes of the three-dimensional reactor is significant. The oily wastewater treated by the method has an oil content reduced to less than 3mg / L, a COD concentration reduced to less than 34mg / L, a BOD5 / COD value increased to above 0.42, and a reduced SS value, and can be discharged directly.

Description

technical field [0001] The invention relates to a treatment method for oily wastewater. Background technique [0002] Oily wastewater is a common industrial wastewater, and its sources are very extensive, mainly including oil exploration and refining industries, petrochemical industries, and catering and food processing industries. According to statistics, at least 5-10 million tons of oily wastewater enters water bodies through various channels every year in the world. While causing water pollution and waste of oil resources, oil pollutants also have a great impact on environmental ecology and human health. Therefore, domestic and foreign research institutions have always attached great importance to the treatment methods of oily wastewater. [0003] Enzyme is a protein that catalyzes a specific chemical reaction. It is a biocatalyst with the characteristics of high catalytic efficiency, strong specificity, and mild action conditions. However, when free enzymes are used t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/00C02F1/52
CPCC02F1/52C02F3/005C02F3/342C02F9/00
Inventor 魏新郦和生王岽吴颖王洪英
Owner CHINA PETROLEUM & CHEM CORP
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