Two-stage catalytic oxidation wastewater treatment system

Abstract

The invention discloses a two-stage catalytic oxidation wastewater treatment system and belongs to the field of wastewater treatment. The two-stage catalytic oxidation wastewater treatment system is connected with a pH adjustment tank, an oxidation reactor, a neutralization tank, and a flocculation-sedimentation tank by virtue of inlet water pipelines, wherein the oxidation reactor comprises a first-stage oxidation reactor and a second-stage oxidation reactor, the water inlet of the first-stage oxidation reactor is connected with the water inlet of the second-stage oxidation reactor by virtue of a pipeline, the first-stage oxidation reactor is a homogeneous oxidation reactor and the second-stage oxidation reactor is a fixed bed oxidation reactor. Compare with the traditional homogeneous reaction and fluidized bed technology, by the two-stage catalytic oxidation wastewater treatment system, the reaction efficiency is increased, the chemical agent addition amount is significantly reduced, the effluent water quality can be significantly improved, the concentration of organic matters in the effluent water is decreased and the two-stage catalytic oxidation wastewater treatment system is applicable to deep treatment of wastewater and has broad practical application prospects.

Description

technical field [0001] The invention discloses a waste water treatment system, which belongs to the field of waste water treatment, in particular to a two-stage catalytic oxidation waste water treatment system. Background technique [0002] The development of high-pollution industries such as chemical industry, printing and dyeing, and pharmaceutical industry has brought severe challenges to environmental protection, especially the discharge of biodegradable wastewater, which is currently a technical difficulty in wastewater treatment. The traditional secondary wastewater treatment system is difficult To achieve the purpose of purification, refractory substances will enter the natural water body and biosphere, seriously affecting the living environment of human beings. Traditional advanced oxidation generally uses single-stage homogeneous or heterogeneous reactors to achieve complete mixed reactions through aeration or stirring. In the homogeneous reaction system, the mass t...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies and problems existing in the prior art, the present invention provides a two-stage catalytic oxidation wastewater treatment system, through which the dosage of iron salt can be reduced, and the power consumption is also reduced compared with homogeneous catalysis when treating wastewater, further improving the efficiency of the system. The water pollutant reaction belongs to the plug-flow oxidation reaction, which is not easy to penetrate the bed, and the compliance rate is significantly increased when the water is discharged. This system is suitable for use in the purification of waste water, especially suitable for meeting the needs of industrial waste water purification. The specific scheme proposed by the present invention is:

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