Series type internal circulation Fenton fluidized-bed oxidizing tower
An internal circulation, fluidized bed technology, applied in the field of serial internal circulation Fenton fluidized bed oxidation tower, can solve the problems of high-cost large-scale industrial application, narrow pH application range, large dosage, etc., to overcome the sludge volume. Great problem, improve removal efficiency, reduce the effect of dosing
Active Publication Date: 2015-06-03
JIANGNAN UNIV
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Problems solved by technology
The traditional homogeneous Fenton technology is a relatively mature Fenton technology, but this technology has a narrow range of pH applications, Fe 2+ Large dosage, iron-containing sludge precipitates after the reaction, and high processing costs limit its large-scale industrial application
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[0036] Below by embodiment the utility model is described further:
[0037] Implementation steps: such as figure 1 As shown, a serial internal circulation Fenton fluidized bed oxidation tower includes a serial internal circulation Fenton fluidized bed tube No. 1 column 1 and a serial internal circulation Fenton fluidized bed tube No. 2 column 2. The main body of the serial internal circulation Fenton fluidized bed column is equipped with a circulating water distribution area 3, Fe 2+ Fluidized reaction zone 4 , reaction transition zone 5 , and reaction termination zone 21 .
[0038] There is a water inlet pipe 6 at the bottom of the serial internal circulation Fenton fluidized bed oxidation tower (No. 2+ The dosing also includes a hydrogen peroxide dosing tank 8, which communicates with the serial internal circulation Fenton fluidized bed oxidation tower through the dosing pipe 7.
[0039] The top of the serial internal circulation Fenton fluidized bed oxidation tower (colu...
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Abstract
The invention discloses a series type internal circulation Fenton fluidized-bed oxidizing tower. The oxidizing tower comprises two series type internal circulation Fenton fluidized-bed pipe column main bodies. Each series type internal circulation Fenton fluidized-bed pipe column main body is internally provided with a circulating water-distribution area, a Fe<2+> fluidized reaction area, a reaction filtering area and a reaction termination area from bottom to top. The oxidizing tower disclosed by the invention has the advantages that two Fenton fluidized-bed oxidizing towers are innovatively connected in series and are combined with internal circulation process, the addition of Fe<2+> is reduced, and residual H2O2 is fully utilized, so that the cost of iron-containing sludge in the following treatment is reduced and the removing efficiency of COD is increased.
Description
technical field [0001] The invention relates to a fluidized bed oxidation tower, in particular to a serial internal circulation Fenton fluidized bed oxidation tower. Background technique [0002] In order to prevent secondary pollution of urban water bodies and complete the transformation of urban sewage into a new urban water source, it is necessary to study a stable, efficient, and energy-saving advanced sewage treatment process, and then perform tertiary treatment on the secondary effluent to further remove refractory biodegradable substances. Organic matter, which has also become an inevitable trend in the development of urban sewage treatment. At present, the advanced treatment methods mainly include flocculation precipitation, ozone oxidation and activated carbon adsorption. The Fenton method is considered to be an effective advanced oxidation technology for the removal of refractory organic matter, and its main principle is to utilize Fe 2+ as H 2 o 2 In the react...
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IPC IPC(8): C02F9/04
Inventor 阮文权吴玉清任洪艳
Owner JIANGNAN UNIV