Electrochemical sulfide removal reactor and sewage treatment method using reactor

A sulfide and electrochemical technology, applied in electrochemical water/sewage treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc. Fewer reactions, simple operation, and low operating costs

Inactive Publication Date: 2017-05-24
河北润港环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention proposes an electrochemical sulfide removal reactor and a sewage treatment method using it, which solves the problem of removing S in the prior art. 2- The method has problems such as high operating cost, complicated operation, or inconspicuous effect

Method used

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  • Electrochemical sulfide removal reactor and sewage treatment method using reactor
  • Electrochemical sulfide removal reactor and sewage treatment method using reactor
  • Electrochemical sulfide removal reactor and sewage treatment method using reactor

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the electrochemical sulfide removal reactor in this embodiment includes a reaction tank 1 , a sewage inlet pipe 2 , an aeration stirring air pipe 3 and a backwash air pipe 4 .

[0039] Wherein, the reaction pool 1 is an open type, resistant to acid and alkali corrosion, and can be designed in shapes such as circles and squares; a supporting plate 5 with holes is arranged in the reaction pool 1, and the supporting plate 5 separates the reaction pool 1 into The upper and lower areas; the desulfurization filter material 6 is placed on the supporting plate 5, that is, the desulfurization filter material 6 is located in the upper area of ​​the reaction pool 1; the lower end of the reaction pool 1 is provided with an empty port 7 for discharging the reaction pool Residual water or impurities in 1; a water outlet 8 is provided at the upper end of the reaction tank 1 for discharging desulfurized water, and the position of the water outlet 8 is usually...

Embodiment 2

[0046] Such as figure 2 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, the difference is that the head end of the sewage inlet pipe 2 is not connected to the pH adjustment tank 12, but leads to an acid adding pipe 13 for adding acid to the sewage inlet pipe 2. Acid, adjust the pH value of sewage. Compared with Example 1, in this example, acid is directly added to the sewage inlet pipe 2 .

Embodiment 3

[0048] Such as image 3 As shown, in the present embodiment, the sewage treatment method using the aforementioned electrochemical sulfide removal reactor comprises the following steps:

[0049] 1) Add acid to sewage, adjust the pH value of sewage to 2-5, make it reach suitable reaction conditions; The adjustment tank 12 is used for adjustment; when the electrochemical sulfide removal reactor in Example 2 is used, the acid is added from the acid adding pipe 13 into the sewage inlet pipe 2 and mixed with the sewage for adjustment.

[0050] 2) Desulfurize the sewage after adjusting the pH value through the electrochemical sulfide removal reactor; the sewage enters the bottom of the electrochemical sulfide removal reactor through the sewage water inlet pipe 2 and distributes water evenly; the sewage passes through the supporting plate 5 passes through the desulfurization filter material 6, and an electrochemical reaction occurs in the desulfurization filter material 6, and the re...

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Abstract

The invention puts forward an electrochemical sulfide removal reactor, which comprises a reaction tank, a sewage inlet tube, an aeration stirring air-tube and a backwashing air-tube. A bearing plate and a desulfuration filter material are arranged inside the reaction tank. A head end of the sewage inlet tube is positioned outside the reaction tank, and a tail end of the sewage inlet tube extends to the bottom of the reaction tank. The tail end of the sewage inlet tube is provided with a water distributor hole. A head end of the aeration stirring air-tube is positioned outside the reaction tank, and a tail end of the aeration stirring air-tube extends to the bottom of the reaction tank. The tail end of the aeration stirring air-tube is provided with an aerator pipe hole. A head end of the backwashing air-tube is positioned outside the reaction tank, and a tail end of the backwashing air-tube extends to the bottom of the reaction tank. The tail end of the backwashing air-tube is provided with a backwashing pipe hole. The invention also discloses a sewage treatment method using the electrochemical sulfide removal reactor. By the use of the electrochemical sulfide removal reactor, sulfides in sewage are effectively removed; there is less chemical side reaction; no toxins are generated; action time is short; floor area is small; operating expenses are low; and repairing and maintenance are convenient.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an electrochemical sulfide removal reactor and a sewage treatment method using the same. Background technique [0002] Inorganic sulfide is an important class of environmental pollutants. The allowable discharge concentration of sulfide in the "Integrated Wastewater Discharge Standard" (GB8978-1996) is 1.0 mg / L; at the same time, sulfide ions (S 2- ) has a toxic effect on the biochemical system of sewage treatment, and seriously inhibits the growth of microorganisms (the reference value of the maximum operating concentration of sulfide listed in the "Three Wastes Treatment Engineering Technical Manual Wastewater Volume" is 5-25mg / L), so the treatment containing S 2- When dealing with industrial wastewater, the removal of sulfur ions (S 2- ). Currently, S 2- The removal methods mainly include oxidation method, chlorination method, air stripping method, flocculation pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/46C02F9/06C02F101/10
Inventor 曾成林张志海张恩亮
Owner 河北润港环保科技有限公司
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