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Fenton fluidized bed device based on jet flow water distributor

A technology of jet water distributor and fluidized bed, which is applied in water/sewage treatment, chemical instruments and methods, and water treatment of special compounds, etc. It can solve the problems of blocked circulation pipelines and water distribution structures, increased energy consumption of the system, and fillers. Reduce the fluidization rate and other problems, to achieve the effect of improving the fluidization effect, increasing the stirring intensity, improving the processing capacity and processing efficiency

Pending Publication Date: 2019-01-18
王德喜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the Fenton fluidized bed greatly reduces the output of iron sludge, a small amount of iron sludge can easily block the water distribution device, resulting in a decrease in the fluidization rate of the filler in the fluidized bed, and short flow, channel flow, dead zone, etc. in the reaction zone. Phenomenon; the existence of iron sludge will also lead to the blockage of some types of hydrogen peroxide and ferrous sulfate dosing and dispensing devices, which will eventually lead to inconsistent dosing ratios, and a large increase in the amount of iron sludge will cause a vicious circle and cause the device to fail.
At the same time, due to the existence of the external circulation system, some flocs will block the circulation pipeline and water distribution structure during the external circulation process, and with the increase of the circulation flow of the external circulation system, the energy consumption of the system operation will also increase significantly

Method used

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  • Fenton fluidized bed device based on jet flow water distributor
  • Fenton fluidized bed device based on jet flow water distributor
  • Fenton fluidized bed device based on jet flow water distributor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] like figure 1 As shown, the present embodiment provides a Fenton fluidized bed device based on a jet water distributor, comprising a fluidized bed tank 1, a phase-splitting jet dosing device 2 is arranged in the fluidized bed tank 1, and a fluidized The inside of the bed tank 1 is also provided with a water distributor 3 for inputting sewage. The phase-splitting jet dosing device 2 and / or the water distributor 3 deliver Fenton's reagent into the fluidized bed tank 1 to mix with sewage. The Fenton's reagent is Hydrogen peroxide and ferrous ions are a single component before mixing or a mixed component after the two are mixed into Fenton's reagent.

[0033] A water distributor 3 is arranged at the bottom of the fluidized bed tank 1, and a plurality of water distribution nozzles 31 are evenly distributed on the water distributor 3, and the angle between the axial centerline of the water distribution nozzles 31 and the horizontal plane is θ, θ The angle range is: 30°≤θ≤150...

Embodiment 2

[0044] like figure 2 As shown, on the basis of Embodiment 1, there are multiple phase-separating jet dosing devices 2, and each phase-separating jet dosing device 2 is evenly distributed along the central axis of the fluidized bed tank body 1, such as phase-separating jet dosing The device 2 may be a first phase-splitting jet dosing device 2a and a second phase-separating jet dosing device 2b arranged at intervals up and down. Now the hydrogen peroxide flow channel 21 and the ferrous sulfate flow channel 23 can be respectively connected on the first phase-splitting jet dosing device 2a and the second phase-separating jet dosing device 2b, through the first phase-separating jet dosing device 2a and the second phase-splitting jet dosing device 2a The dichotomous jet dosing device 2b adds hydrogen peroxide and ferrous sulfate respectively. In this embodiment, since the number of phase-splitting jet dosing devices 2 is increased, the fluid flow effect at different depths in the ...

Embodiment 3

[0046] like image 3 As shown, the phase-splitting jet doser 2 can only be responsible for the pressure delivery of one component in the Fenton's reagent, and the water distributor 3 is responsible for the pressure delivery of the other component in the Fenton's reagent. For example, hydrogen peroxide can be delivered through the phase-splitting jet dosing device 2, and ferrous sulfate can be delivered through the water distributor 3. Specifically, the upper pipeline of the water distributor 3 is connected with a ferrous sulfate chemical preparation pool 83, and between the ferrous sulfate chemical preparation pool 83 and the water distributor 3, a ferrous sulfate dosing metering pump 82, Ferrous sulfate dosing control valve 81 and ferrous sulfate dosing device 8. In this embodiment, the water distributor 3 can input ferrous sulfate in the fluidized bed tank 1 while delivering sewage in the fluidized bed tank 1, and the ferrous sulfate in the fluidized bed tank 1 is mixed wit...

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Abstract

The invention relates to the technical field of sewage treatment and specifically relates to a Fenton fluidized bed device based on a jet flow water distributor. The Fenton fluidized bed device comprises a fluidized bed tank body, wherein a split-phase jet flow doser is arranged in the fluidized bed tank body; a water distributor for inputting sewage is also arranged in the fluidized bed tank body; the split-phase jet flow doser and / or water distributor conveys a Fenton reagent into the fluidized bed tank body to be mixed with the sewage; the Fenton reagent is a single component of hydrogen peroxide and ferrous ions before mixing or a mixed component of Fenton reagent obtained by mixing the hydrogen peroxide and the ferrous ions. In the technical scheme, with the fluid jet of the water distributor and the split-phase jet flow doser as the power, the sewage, the drug and the filler are mixed and stirred to form a plurality of longitudinal circulating flow fields in the fluidized bed tank body, thus the stirring intensity of the reaction tank is greatly enhanced, the fluidizing effect of the filler is improved, the treatment ability and the treatment efficiency of the device are improved, and the problems of non-uniform water distribution, bad effect of filler fluidizing, large output of iron mud and frequent blockage of the pipeline system of traditional Fenton fluidized reactorare solved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a Fenton fluidized bed device based on a jet water distributor. Background technique [0002] At present, in the sewage treatment technology, due to the relatively high content of non-biodegradable organic matter in the effluent of the secondary sedimentation tank, an advanced wastewater treatment unit must be added to meet the discharge standard. The advanced wastewater treatment technologies that have been developed so far include ozone oxidation, activated carbon adsorption, Membrane separation method, wet oxidation method and fluidized bed Fenton oxidation method, etc. Among all advanced treatment methods, Fenton chemical oxidation method or other improved Fenton chemical oxidation method has low investment cost and great tolerance to water quality changes , easy operation and maintenance, and low operating cost. Other methods are difficult to be accepted by the indu...

Claims

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Application Information

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IPC IPC(8): C02F1/72
CPCC02F1/722C02F2305/026
Inventor 王德喜王猛赵曦波
Owner 王德喜