Method and device for mineralizing low-concentration persistent organic pollutants in oil refining sewage
A technology for organic pollutants and oil refining sewage, applied in water pollutants, chemical instruments and methods, water/sewage treatment, etc. low cost effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0043] Example 1 Process flow for treating oil refinery sewage by synergistic ozone catalytic oxidation of natural ore
[0044] see figure 1 , the oil refinery sewage treated by the conventional process of "oil separation + air flotation + biochemical + filtration" is input into the catalytic oxidation reactor 10 for advanced treatment; the catalytic oxidation reactor 10 is filled with natural ore catalysts to cooperate with ozone for catalytic oxidation, and the oil refinery sewage The low-concentration refractory organic pollutants in the medium are mineralized, and the CODcr value of the effluent meets the requirements of no more than 60mg / L and then discharges up to the standard. Generally, the ozone dosing ratio of the catalytic oxidation reactor is controlled according to the amount of COD that needs to be removed, and the dosing ratio is 1.3-1.5mgO 3 / mgCOD; the hydraulic retention time of the reactor is controlled between 30 and 45 minutes to ensure sufficient ozone-c...
Embodiment 2
[0045] Embodiment 2 catalytic oxidation reactor
[0046] The structure of the catalytic oxidation reactor used in the device flow process of embodiment 1 is as follows figure 2 , image 3 and Figure 4 shown.
[0047]The main features of the catalytic oxidation reactor 10 include that the reactor tank 101 is designed with a sewage inlet 1011, a sewage discharge outlet 1012, a sewage return outlet 1013, an ozone-dissolved water inlet 1014, an exhaust outlet 1015, an ozone tail gas outlet 1016, a human Hole sight glass 1017, manhole 1018 and hand hole 1019. The inside of the reactor tank is designed with a water distributor 102 , a dissolved ozone water releaser 103 , a water outlet cofferdam 104 , a catalyst carrying unit 105 and a holding unit fixing clip 106 . The sewage inlet 1011 is connected with the water distributor 102 . The dissolved ozone water inlet 1014 is connected with the dissolved ozone water releaser 103 . The outlet cofferdam 104 is connected to the out...
Embodiment 3
[0048] The preparation of embodiment 3 natural ore catalysts
[0049] In this embodiment, the natural ore is simply processed according to the method of the present invention to prepare a natural ore catalyst, and the catalyst is used for mineralization treatment of refinery wastewater. The catalyst samples before and after use were characterized and analyzed.
[0050] Examples Catalyst samples: prepared according to the following method: crush the natural ore, screen the ore particles with a particle size range of 1.5-2.0 mm, wash with fresh water for 30 minutes until no powder / impurity is produced, and then put the ore particles at room temperature After drying for 16 hours, calcining at 800° C. for 1 hour under aerobic conditions, and cooling to room temperature, the natural ore catalyst of this example was obtained.
[0051] Control sample: natural ore particles, not processed by the method for preparing catalyst of the present invention.
[0052] 1) Bauxite ore characte...
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| pore size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More