Method and device for treating hardly-degraded industrial wastewater of powdered activated carbon magnetic-coagulation settling pond

A technology of powdered activated carbon and industrial wastewater, applied in water/sewage treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc., can solve the problems of long process, complex technology, high cost of sewage treatment, etc.

Inactive Publication Date: 2016-12-14
CAMBRIDGE ENVIRONMENTAL CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a powder activated carbon magnetic coagulation clarifier method for treati

Method used

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  • Method and device for treating hardly-degraded industrial wastewater of powdered activated carbon magnetic-coagulation settling pond
  • Method and device for treating hardly-degraded industrial wastewater of powdered activated carbon magnetic-coagulation settling pond

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Embodiment 1

[0025] Such as figure 1 Shown, according to a kind of powder activated carbon magnetic coagulation clarifier of the present invention process refractory industrial waste water method, described method comprises the steps:

[0026] S101: After the sewage is biochemically treated, measure its COD value. When the COD value in the sewage is not less than 50mg / L, add powdered activated carbon to the sewage. Cyclic adsorption treatment. Since the sludge reflux is set in the magnetic coagulation clarification process, the powdered activated carbon in the sludge is also recycled dozens of times. Yes, the powdered activated carbon can have sufficient time to contact with the sewage to achieve saturated adsorption, which is conducive to saving the use of powdered activated carbon. volume, saving processing costs.

[0027] S102: sequentially add powdered activated carbon, coagulant, magnetic powder and flocculant to the sewage treated in step S101 to perform flocculation treatment; whe...

Embodiment 2

[0031] On the basis of Embodiment 1, step S105 is further included: dehydrating the sludge discharged in step S104.

Embodiment 3

[0033] As shown in 2, a powder activated carbon magnetic coagulation clarification tank according to the present invention treats refractory industrial wastewater device, the sewage treatment device includes: reaction tank 110, sedimentation tank 120, dosing room 130 and magnetic coagulation clarification system 140, wherein the reaction tank 110 communicates with the sedimentation tank 120, the dosing room 130 and the magnetic coagulation clarification system 140 respectively.

[0034] When carrying out sewage treatment, the sewage is first subjected to biochemical treatment, and then the sewage is discharged into the reaction tank 110 and powdered activated carbon is added, and the circulation adsorption treatment is carried out through the reflux system, and then discharged into the sedimentation tank 120, and then to the sedimentation tank 120 through the dosing room 130 The magnetic powder and flocculant are put into the sedimentation tank, and the sedimentation tank inclu...

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Abstract

The invention discloses a method and device for treating hardly-degraded industrial wastewater of a powdered activated carbon magnetic-coagulation settling pond. The method comprises the following steps: adding powdered activated carbon into wastewater after biochemical treatment of the wastewater, and performing cyclic adsorption treatment by a reverse-flow system; sequentially adding coagulant, magnetic powder and a flocculating agent into the wastewater, and performing flocculation treatment; performing mud-water separation on the wastewater to obtain supernate and sludge; and retrieving magnetic powder in the sludge, and discharging the sludge. According to the method for treating hardly-degraded industrial wastewater of the powdered activated carbon magnetic-coagulation settling pond, the powdered activated carbon is cyclically contacted with water for several times to achieve the effect of saturation adsorption, so that the wastewater treatment cost is reduced, and the wastewater treatment effect is improved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method and device for treating refractory industrial wastewater in a powder activated carbon magnetic coagulation clarification tank. Background technique [0002] With the shortage of water resources, human beings pay more and more attention to water resources, and people use various methods to treat, recycle and utilize waste water and sewage. In particular, the industrial wastewater discharged from some sewage treatment plants contains a large amount of refractory organic pollutants (COD), which are difficult to remove. The more commonly used methods generally include: chemical reagent oxidation method, physical adsorption method or a variety of combined processes and so on. The chemical oxidation method generally adds a strong oxidant, and under certain reaction conditions (such as pH value, temperature, pressure), the organic matter is oxidized into an inorganic ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/283C02F1/488C02F1/5281C02F3/00
Inventor 黑国翔华英豪张航龙
Owner CAMBRIDGE ENVIRONMENTAL CHINA CO LTD
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