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Method for advanced treatment of organic matter in high-salt wastewater under synergism of electrochemistry and persulfate

A high-salt wastewater, persulfate technology, applied in water pollutants, water/sewage treatment, water treatment parameter control, etc. Effect

Active Publication Date: 2019-08-09
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] For this reason, the technical problem to be solved by the present invention is to provide a method for the advanced treatment of organic matter in high-salt wastewater by electric cooperation with persulfate, so as to solve the problem of secondary pollution in the prior art in cooperation with advanced oxidation of persulfate

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  • Method for advanced treatment of organic matter in high-salt wastewater under synergism of electrochemistry and persulfate

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Effect test

Embodiment 1

[0034] The method for the advanced treatment of organic matter in high-salt wastewater by electric cooperation with persulfate described in this embodiment comprises the following steps

[0035] (1) get 2-methoxyphenol concentration and be 300mL waste water (TDS value sees table 1 below) of 50mg / L in the reactor, add 0.3g sodium persulfate, make the sodium persulfate concentration in the solution be 1g / L ( Now the solution is neutral, the pH is about 7), and the initial pH of the waste water is adjusted to be 12 with NaOH;

[0036] (2) Insert a pair of carbon plate electrodes (5×2.5cm) into the reactor, keep the distance between the plates at 3cm, supply power from a constant voltage power supply, set the voltage at 2V, start the sulfate radical oxidation reaction, and the reaction time is 3h .

[0037] After the reaction is over, turn off the power and take out the electrode to terminate the reaction, and the solution in the reactor is the reaction effluent.

Embodiment 2

[0039] The method for the advanced treatment of organic matter in high-salt wastewater by electric cooperation with persulfate described in this embodiment comprises the following steps

[0040] (1) get 2-methoxyphenol concentration and be 300mL waste water (TDS value sees table 1 below) of 100mg / L in reactor, add 0.9g sodium persulfate, make sodium persulfate concentration be 3g / L in the solution, And adjust the initial pH of the wastewater to be 12;

[0041] (2) Insert a pair of carbon plate electrodes (5×2.5cm) into the reactor, keep the distance between the plates at 3cm, supply power from a constant voltage power supply, set the voltage at 2V, start the sulfate radical oxidation reaction, and the reaction time is 3h .

[0042] After the reaction is over, turn off the power and take out the electrode to terminate the reaction, and the solution in the reactor is the reaction effluent.

Embodiment 3

[0044] The method for the advanced treatment of organic matter in high-salt wastewater by electric cooperation with persulfate described in this embodiment comprises the following steps

[0045] (1) get 2-methoxyphenol concentration and be 300mL waste water (TDS value sees table 1 below) of 200mg / L in reactor, add 1.5g sodium persulfate, make sodium persulfate concentration be 5g / L in the solution, And adjust the initial pH of the wastewater to be 12;

[0046] (2) Insert a pair of carbon plate electrodes (5×2.5cm) into the reactor, keep the distance between the plates at 3cm, supply power from a constant voltage power supply, set the voltage at 2V, start the sulfate radical oxidation reaction, and the reaction time is 3h .

[0047] After the reaction is over, turn off the power and take out the electrode to terminate the reaction, and the solution in the reactor is the reaction effluent.

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Abstract

The invention belongs to the technical field of advanced treatment of industrial wastewater, and particularly relates to a method for advanced treatment of organic matter in high-salt wastewater underthe synergism of electrochemistry and persulfate. In the method for advanced treatment of organic matter in high-salt wastewater under the synergism of electrochemistry and persulfate, in combinationwith the convenience of high salt content and low solution resistance of high-salt wastewater, based on the principle of sulfate free radical oxidation, the direct and indirect oxidation action of amicro electric field is utilized to make persulfate generate more free radicals to remove organic matter on the basis of direct oxidation for organic matte removal, refractory organic matter can be effectively removed, the organic matter removal rate can reach 90% or above, and the problem that deep removal of organic matter in high-salt and high-chlorine wastewater is difficult can be solved. Compared with an existing conventional persulfate advanced oxidation treatment method, the method has the advantages that it is not needed to add any activator (like iron), secondary pollution caused byactivators is effectively avoided, and the method has high efficiency and environmental friendliness.

Description

technical field [0001] The invention belongs to the technical field of advanced treatment of industrial waste water, and in particular relates to a method for advanced treatment of organic matter in high-salt waste water with electric cooperation with persulfate. Background technique [0002] In recent years, limited by the current level of social and economic development and technological development, many chemical industries have inevitably discharged a large amount of high-concentration saline wastewater containing organic pollutants. Most of these pollutants are harmful to the ecological environment and human body, and have already Water resources and water environment have caused impact and even harm. Due to the high salt content of such wastewater, it is difficult for conventional microorganisms to survive and grow, making it difficult to treat it with traditional biodegradation methods. Coal chemical industry is a process in which coal is used as raw material and con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/461C02F101/30
CPCC02F1/72C02F1/4672C02F2101/30C02F2209/06C02F2201/46135C02F2201/4615
Inventor 纪志永黄智辉袁俊生陈希赵颖颖刘杰王士钊李非郭小甫
Owner HEBEI UNIV OF TECH
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