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A composite enhanced micro-electrolysis simulation treatment method

A technology of simulating treatment and treatment method, applied in the field of micro-electrolysis treatment, can solve the problems of large pH influence and slow rate of oxidative decomposition of hydrogen peroxide, and achieve the effects of high work efficiency, increased possibility, and accelerated reaction rate

Active Publication Date: 2019-11-08
NANTONG DAHENG ENVIRONMENTAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This treatment method oxidizes and decomposes through the strong oxidation of hydrogen peroxide. Although the overall reaction rate is accelerated to a certain extent, the rate of oxidation and decomposition of hydrogen peroxide itself is still slow, and it is greatly affected by pH, so there is still room for further improvement in work efficiency. Therefore the present invention has developed a kind of pH application scope is wide, the response speed is fast and the composite type strengthened micro-electrolysis simulation processing method that efficiency is high, after searching, do not find the same or similar technical scheme with the present invention

Method used

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Embodiment 1

[0021] The invention discloses a composite enhanced micro-electrolysis simulation treatment method, which is specifically as follows:

[0022] (1) Select a pharmaceutical factory to comprehensively discharge wastewater. The water quality: does not contain benzene, COD: 17000-20000mg / L, B / C is 0.05-0.15, and has a pungent smell, where B / C is biological oxygen demand and chemical The ratio of oxygen demand;

[0023] (2) Add acid to the comprehensive discharge wastewater to adjust its pH to 2-5, then add 1%-3% hydrogen peroxide and 50-100mg / L copper ions in sequence, and stir them evenly with a stirring bar;

[0024] (3) Insert the anode titanium plate and the cathode titanium plate in the comprehensive discharge wastewater, and set a DC stabilized power supply between the anode titanium plate and the cathode titanium plate. The voltage of the DC stabilized power supply is 10V ~ 12V, and the current is 0.01A~0.1A; then continue to add sintered iron-carbon spheres to the comprehe...

Embodiment 2

[0034] The invention discloses a composite enhanced micro-electrolysis simulation treatment method, which is specifically as follows:

[0035] (1) Select pharmaceutical wastewater containing benzene rings, and add benzene series to it to obtain simulated wastewater. The benzene series include benzene, toluene, ethylbenzene, xylene and styrene, and the addition amount is 45-55mg / L ;

[0036] (2) Add acid to the simulated wastewater to adjust its pH to 2-5, then add 1%-3% hydrogen peroxide and 50-100mg / L copper ions in sequence, and stir them evenly with a stirring rod;

[0037] (3) Insert the anode titanium plate and the cathode titanium plate in the simulated wastewater, and set a DC stabilized power supply between the anode titanium plate and the cathode titanium plate. The voltage of the DC stabilized power supply is 10V ~ 12V, and the current is 0.01 A~0.1A; then continue to add sintered iron-carbon spheres to the simulated wastewater, so that the ratio of the volume of th...

Embodiment 3

[0045] The invention discloses a composite enhanced micro-electrolysis simulation treatment method, which is specifically as follows:

[0046] (1) Select pharmaceutical wastewater that actually contains benzene series, mainly toluene as the main characteristic pollutant, with a concentration range of 50-150mg / L, and also contains a small amount of benzene and ethylbenzene;

[0047] (2) Add acid to the pharmaceutical wastewater to adjust its pH to 2-5, then add 1%-3% hydrogen peroxide and 50-100mg / L copper ions in sequence, and stir them evenly with a stirring rod;

[0048] (3) Insert the anode titanium plate and the cathode titanium plate in the simulated wastewater, and set a DC stabilized power supply between the anode titanium plate and the cathode titanium plate. The voltage of the DC stabilized power supply is 10V ~ 12V, and the current is 0.01 A~0.1A; then continue to add sintered iron-carbon spheres to the pharmaceutical wastewater, so that the ratio of the volume of th...

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Abstract

The invention relates to a composite type reinforcing microelectrolysis simulation processing method. Firstly an acid, hydrogen peroxide and copper ions are respectively added into pharmaceutical wastewater containing phenyl rings and simulated wastewater containing phenyl rings in turn, and all the substances are mixed uniformly. Then a direct current is connected to the wastewater, and iron carbon balls are added. The pH value is adjusted by adding an alkali after full reaction. PAM and PAC are added to accelerate wastewater deposition, and a supernatant is obtained after the deposition is finished. The composite type reinforcing microelectrolysis simulation processing method has the advantages that the hydrogen peroxide is added to the wastewater and the electricity is connected to the wastewater based on the prior art in the composite type reinforcing microelectrolysis simulation processing method; more hydroxyl radicals are generated by using the hydrogen peroxide role during an energization process while the iron carbon microelectrolysis processing efficiency is ingeniously increased; in addition, an Electro-Fenton principle is correspondingly formed because the ferroelectric microelectrolysis will generate a large amount of ferrous ions; in the action of a plurality of complex mechanisms, the phenyl ring opening and bond broken possibility is increased greatly, so that a removal rate of benzene series is improved.

Description

technical field [0001] The invention relates to a micro-electrolysis treatment method, in particular to a composite enhanced micro-electrolysis simulation treatment method. Background technique [0002] In the process of producing fluoropyridine and other drugs in the pharmaceutical industry, the workshop must use toluene as a solvent for the cyclization reaction in order to obtain a higher yield, and then produce benzene series waste water mainly containing toluene. In order to ensure the stable operation of the subsequent biochemical treatment, it is necessary to strengthen the degradation of benzene series to reduce the subsequent biochemical burden and ensure the normal operation of the biochemical system. [0003] Benzene series refer to a class of volatile single-ring aromatic hydrocarbon compounds including benzene, toluene, ethylbenzene, xylene, etc. Because of its "three-cause benefits", benzene series has been identified as a strong carcinogen by the World Health ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/06C02F101/32
CPCC02F1/461C02F1/46176C02F1/5245C02F1/56C02F1/66C02F1/722C02F1/725C02F9/00C02F2101/322C02F2103/343C02F2301/08C02F2305/023C02F2305/026
Inventor 陈建陈前孙禄军李培杨佳丽唐丽娟张永祥
Owner NANTONG DAHENG ENVIRONMENTAL ENG CO LTD
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