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A Fenton fluidized bed reactor and an operation method thereof

A technology of fluidized bed reactor and reactor shell, which is applied in chemical instruments and methods, oxidized water/sewage treatment, special compound water treatment, etc. It can solve the problem of affecting the operation effect of Fenton fluidized bed and the low utilization rate of chemicals , long residence time and other issues, to achieve the effect of reducing the yield of iron-containing sludge, improving the utilization rate of chemicals, and saving operating electricity costs

Active Publication Date: 2017-08-29
DALIAN MARITIME UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the design of height-to-diameter ratio of the fluidized bed reactor, fluid distributor, circulating reflux, chemical dosing, drainage, and slag discharge all seriously affect the actual operation effect of the Fenton fluidized bed.
Due to unreasonable design, problems such as uneven water distribution, long residence time, and low utilization rate of reagents generally exist in the existing Fenton fluidized bed technology. The present invention provides a Fenton fluidized bed reactor and its operating method. It can improve the utilization rate of the agent and maintain a stable treatment effect

Method used

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  • A Fenton fluidized bed reactor and an operation method thereof

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Embodiment 1

[0040] Such as figure 1 As shown, a Fenton fluidized bed reactor includes a reactor shell 1, an inflow flow distributor 2, a reflux flow distributor 3, a hydrogen peroxide flow distributor 4, a partition 5, a three-dimensional filter 6, Return pump 7, water inlet pump 8, pipeline mixer 9, acid dosing pump 10, ferrous dosing pump 11 and hydrogen peroxide dosing pump 12;

[0041] The reactor shell 1 includes a water distribution area 13, a packing area 14 and a drainage area 15 arranged in sequence from bottom to top. The reactor shell 1 is provided with a water inlet 16, a slag discharge port 17, a return inlet 18, Return outlet 19 and drain outlet 20;

[0042] The inlet water flow distributor 2 and the return flow distributor 3 are located in the water distribution area 13, the inlet water distributor 2 communicates with the water inlet 16, and the water inlet 16 is located in the water distribution area 13. On the side wall of the water distribution area 13, the return flow...

Embodiment 2

[0058] A kind of operation method of a kind of Fenton fluidized bed reactor as described in embodiment 1, has the following steps,

[0059] S1, adding catalytic filler particles in the filler zone 14;

[0060] S2. Turn on the water inlet pump 8, the acid dosing pump 10, and the ferrous dosing pump 11, and control the pH in the reactor to be 2 to 7;

[0061] S3. Turn on the hydrogen peroxide dosing pump 12 and the reflux pump 7, adjust the reflux ratio, control the rising flow rate in the reactor to 100-500m / h, and ensure that the packing area 14 is in a fluidized state;

[0062] S4, according to the characteristics of water quality, adopt orthogonal experiment, optimize and adjust the dosage of hydrogen peroxide and ferrous sulfate to be 0.035% and 0.1% (mass ratio) of the total amount of influent.

[0063] Adopting the technology of the present invention, for the printing and dyeing wastewater of the garden factory, the COD before and after treatment is 200 and 30 respective...

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Abstract

A Fenton fluidized bed reactor and an operation method thereof are disclosed. The reactor includes a reactor shell, an inlet flow pattern distributor, a reflux flow pattern distributor, a hydrogen peroxide flow pattern distributor, a separating plate, a three-dimensional filter, a reflux pump, a water feeding pump, a pipeline mixer, an acid adding pump, a ferrous adding pump and a hydrogen peroxide adding pump. The reactor is uniform in water distribution and does not need additionally added power for stirring, thus saving the operation electric charge, reducing ineffective hydrogen peroxide decomposition caused by violent stirring and reducing the using amount of the hydrogen peroxide. The hydrogen peroxide and the ferrous sulphate are added separately, thus reducing ineffective consumption of agents. Active catalytic crystals are formed. The yield of iron-containing sludge is reduced.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a Fenton fluidized bed reactor and an operation method thereof. Background technique [0002] As an efficient wastewater advanced oxidation treatment technology, the Fenton method has gradually become the preferred method for the treatment of refractory organic matter. However, the traditional Fenton system has problems such as low utilization rate of hydrogen peroxide, weak impact load resistance, high yield of iron-containing sludge, and easy to cause secondary pollution. [0003] The Fenton fluidized bed greatly improves the traditional Fenton oxidation method, and solves the above problems to a certain extent. This technology utilizes the strong oxidation function of hydroxyl radicals produced by Fenton's reagent, and at the same time, the catalytic body FeOOH formed on the surface of the filler has a heterogeneous catalytic effect, and its catalytic performa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72
CPCC02F1/722C02F1/725C02F2305/026Y02W10/10
Inventor 朱益民陈涛刘伟凤唐晓佳尹琳聂毅兴吕琦玮
Owner DALIAN MARITIME UNIVERSITY
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