A petrochemical comprehensive wastewater treatment device and petrochemical comprehensive wastewater treatment method

A technology that integrates waste water and treatment devices. It is applied in the fields of natural water treatment, chemical instruments and methods, and multi-stage water/sewage treatment. , the effect of reducing the dosage of ozone and improving the biodegradability

Active Publication Date: 2017-05-17
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on this, the effluent of many existing petrochemical comprehensive sewage treatment plants in China can no longer meet the requirements of the new standards, and urgently needs to be upgraded to improve the quality of effluent water. However, the newly built sewage treatment plants in petrochemical industrial parks lack scientific and reasonable treatment processes, and the process The selection is blind, and it is not known whether the final effluent can meet the requirements of the new standard

Method used

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  • A petrochemical comprehensive wastewater treatment device and petrochemical comprehensive wastewater treatment method
  • A petrochemical comprehensive wastewater treatment device and petrochemical comprehensive wastewater treatment method
  • A petrochemical comprehensive wastewater treatment device and petrochemical comprehensive wastewater treatment method

Examples

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Embodiment 1

[0032] Such as figure 1 with figure 2 As shown, a petrochemical integrated wastewater treatment device includes a primary sedimentation tank 1, a hydrolysis acidification tank 2, an anoxic / aerobic tank 3, a secondary sedimentation tank 4, a micro-flocculated sand filter tank 5, and an ozone catalytic oxidation tank 6 connected in sequence And backwash basin 9. The primary sedimentation tank 1 is connected to the petrochemical wastewater input pipeline, and the catalytic oxidation tank 6 is provided with a treatment water outlet; the hydrolysis acidification tank 2 and the anoxic / aerobic tank 3 are respectively connected to the waste gas treatment device 7, the primary sedimentation tank 1, hydrolysis The acidification tank 2 and the secondary sedimentation tank 4 are respectively connected to the sludge treatment device 8, the micro-flocculated sand filter tank 5 and the catalytic oxidation tank 6 are respectively connected to the primary sedimentation tank 1 through a backwash...

Embodiment 2

[0034] The method for treating comprehensive petrochemical wastewater by adopting the comprehensive petrochemical wastewater treatment device of the present invention includes the following steps:

[0035] The comprehensive petrochemical wastewater is deposited in the primary sedimentation tank 1 to remove part of the suspended matter. The effluent from the primary sedimentation tank 1 enters the hydrolysis acidification tank 2 to remove some organic matter. The effluent from the hydrolysis acidification tank 2 enters the anoxic / aerobic tank 3 for further treatment to remove most of the Organic matter and nitrogen. After the effluent from the anoxic / aerobic tank 3 is separated from the mud and water in the secondary settling tank 4, the effluent enters the micro-flocculated sand filter tank 5 to further remove suspended solids in the wastewater, while removing part of the organic matter, nitrogen and phosphorus; The ozone catalytic oxidation pool 6 performs further catalytic oxida...

Embodiment 3

[0039] The difference from Example 2 is that the hydrolysis and acidification tank 2 is a microaerobic-anaerobic cross hydrolysis and acidification tank with a hydraulic retention time of 24h and a gas-water ratio of 0.25:1. Anoxic / aerobic tank 3 has a hydraulic retention time of 24h, aerobic tank air-water ratio of 10:1, and a sludge return ratio of 200%. Add medicament to microflocculation sand filter 5, medicament is PAFC, dosage is 15mg / L. The micro-flocculated sand filter 5 adopts an internal circulation continuous sand filter, and the filter material is quartz sand with a particle size of 0.5-1.0mm; the micro-flocculated sand filter 5 has a filtration rate of 7m / h and an air-water ratio of 0.5 :1. The ozone catalytic oxidation tank 6 has water inlet at the upper part, water outlet at the bottom, and ozone at the bottom. The ozone dosage is 40 mg / L. Ozone catalytic oxidation tank 6 is filled with transition metal oxides, such as Al 2 O 3 Or CuO commercial solid catalyst ...

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Abstract

The invention discloses a petrochemical comprehensive waste water treatment device. The petrochemical comprehensive waste water treatment device comprises a primary sedimentation tank (1), a hydrolysis acidification tank (2), an anoxic / aerobiotic tank (3), a secondary sedimentation tank (4), a micro-flocculation sand filter (5), an ozonation catalytic oxidation tank (6) and a back flush tank (9) which are sequentially connected. The invention further discloses a petrochemical comprehensive waste water treatment method using the device, and the treatment method includes the steps that petrochemical comprehensive waste water is settled through the primary sedimentation tank (1) to remove part of suspended matter, water output by the primary sedimentation tank (1) enters the hydrolysis acidification tank (2), output water enters the anoxic / aerobiotic tank (3) to be further treated, mud-water separation is carried out on output water through the secondary sedimentation tank (4), output water enters the micro-flocculation sand filter (5), and filtered output water enters the ozonation catalytic oxidation tank (6) and is subjected to further catalytic oxidation to be discharged after reaching the standard. Biochemical and physicochemical units are organically combined to form a set of overall petrochemical comprehensive waste water treatment process.

Description

Technical field [0001] The invention relates to the field of wastewater treatment, in particular to a petrochemical integrated wastewater treatment device and a petrochemical integrated wastewater treatment method using the device. Background technique [0002] The petrochemical industry is a pillar industry of the country and one of the heavy pollution industries. The waste water discharged in the production process contains a large amount of toxic and refractory organic matter. If it cannot be effectively treated, it will cause serious pollution to the receiving water body. Ecological safety and drinking water cause great harm to human health. At present, the total amount of industrial wastewater discharged annually in my country exceeds 2.1×10 10 Tons, most of which are discharged after treatment in a centralized integrated sewage treatment plant. For large petrochemical industrial parks, the integrated sewage treatment plant is the last barrier to ensure that the petrochemic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F103/34
Inventor 周岳溪吴昌永
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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