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Multi-reaction-chamber Fenton fluidized bed reactor and wastewater treatment method thereof

A fluidized bed reactor and multi-reaction chamber technology, applied in chemical instruments and methods, oxidized water/sewage treatment, special compound water treatment, etc., can solve the problem of weak detoxification ability of Fenton reactor, low Fenton crystallization rate, etc. question

Active Publication Date: 2021-09-10
NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of low Fenton crystallization rate and weak detoxification ability of Fenton reactor in the wastewater treatment process of Fenton reactor in the prior art, the present invention provides a multi-chamber Fenton fluidized bed reactor and its wastewater treatment method

Method used

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  • Multi-reaction-chamber Fenton fluidized bed reactor and wastewater treatment method thereof
  • Multi-reaction-chamber Fenton fluidized bed reactor and wastewater treatment method thereof
  • Multi-reaction-chamber Fenton fluidized bed reactor and wastewater treatment method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0064] The height of the multi-reaction chamber Fenton fluidized bed reactor of the present embodiment is 8m (effective water depth 7m), and diameter is 8m (wherein the diameter of the first reaction chamber is 4m, the diameter of the second reaction chamber is 6.8m, and the diameter of the clarification chamber is 9.5m), The total residence time is 7.08h (the residence time of the first reaction chamber is 1.26h, the residence time of the second reaction chamber is 2.36h, and the residence time of the clarification chamber is 3.46h), the volume between the first reaction chamber, the second reaction chamber and the clarification chamber The ratio is 1:1.87:2.74, the ratio of the lower cross-sectional area to the upper cross-sectional area of ​​the first reaction chamber is 0.62; and the fillers filled in the first reaction chamber are anion exchange resin and macromolecular water-absorbing resin (mass ratio is 1:1 ), the alkali-adding port is located at the 1 / 4 height from top...

Embodiment 2

[0073] The basic content of this embodiment is the same as that of Example 1, except that the multi-reaction chamber Fenton fluidized bed reactor of this embodiment has a height of 7m (effective water depth 6m) and a diameter of 9m (wherein the diameter of the first reaction chamber is 4m) , the diameter of the second reaction chamber is 6.5m, and the diameter of the clarification chamber is 9m), the total residence time is 7.6h (the residence time of the first reaction chamber is 1.5h, the residence time of the second reaction chamber is 2.5h, and the residence time of the clarification chamber is 3.6h). The volume ratio between the first reaction chamber, the second reaction chamber and the clarification chamber is 1.2:1.92:2.88, the ratio of the lower cross-sectional area of ​​the first reaction chamber to the upper cross-sectional area is 0.67; and the filler filled in the first reaction chamber is The anion exchange resin and macromolecular water-absorbing resin (mass rati...

Embodiment 3

[0080] The basic content of this embodiment is the same as that of Example 1, except that the multi-reaction chamber Fenton fluidized bed reactor of this embodiment has a height of 5m (effective water depth of 4m) and a diameter of 5.3m (wherein the diameter of the first reaction chamber 2.2m, the diameter of the second reaction chamber is 3.8m, the diameter of the clarification chamber is 5.3m), the total residence time is 8.8h (the residence time of the first reaction chamber is 1.52h, the residence time of the second reaction chamber is 3h, and the residence time of the clarification chamber is 4.28h) , the volume ratio between the first reaction chamber, the second reaction chamber and the clarification chamber is 1:1.97:2.82, the ratio of the lower cross-sectional area of ​​the first reaction chamber to the upper cross-sectional area is 0.63; and the first reaction chamber is filled with The filler is anion exchange resin and macromolecular water-absorbing resin (mass rati...

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Abstract

The invention discloses a multi-reaction-chamber Fenton fluidized bed reactor and a wastewater treatment method thereof, and belongs to the technical field of wastewater treatment. According to the Fenton fluidized bed reactor, a first reaction chamber, a second reaction chamber and a clarifying chamber are sequentially and properly arranged in the reactor body from inside to outside, and the first reaction chamber is filled with the proper filler so that the iron crystallization rate in the Fenton fluidized bed reactor is increased; the wastewater is subjected to a degradation reaction in the first reaction chamber with high-concentration filler crystals and then is continuously subjected to the degradation reaction in the second reaction chamber with relatively low-concentration filler crystals, and liquid caustic soda is added for a precipitation reaction so that the detoxification capability of the reactor is improved, and the treatment effect of the Fenton reactor is improved.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and more specifically relates to a multi-chamber Fenton fluidized bed reactor and a wastewater treatment method thereof. Background technique [0002] The Fenton reagent used in Fenton’s advanced oxidation technology mainly includes H 2 o 2 Oxidant and Fe 2+ Catalyst, the two will react under certain conditions to produce hydroxyl radicals, and the high oxidation ability of hydroxyl radicals reacts with organic matter in wastewater, which can decompose and oxidize organic matter, destroy and generate carbon dioxide and water, thereby reducing biological refractory decomposition in wastewater COD. [0003] At present, the traditional Fenton process usually has low utilization efficiency of the Fenton reagent added during the reaction process, and the mixed reaction between the oxidant and the catalyst is uneven, resulting in waste of reagents and increased treatment costs; in addit...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/72C02F1/66C02F101/30
CPCC02F1/722C02F1/725C02F1/66C02F2305/023C02F2101/30Y02W10/10
Inventor 姜笔存贺雨舟于伟华屈晋云谈政焱司徒瑜霞高泽楠林加文刘浩亮
Owner NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND