Phenol-containing wastewater treatment process

A treatment process, a technology for phenol wastewater, applied in water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve problems such as failure, degradation, and unsatisfactory treatment effects, and achieve low price and high degradation efficiency Improves and prevents excessive corrosion

Inactive Publication Date: 2016-08-17
ANHUI GUONENG YISHENG ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such pollutants cannot be degraded by aerobic biodegradation. At the same time, aerobic degradation produces hydroxylamine, which is considered to be carcinogenic. Therefore, the treatment effect of ordinary methods is not ideal.

Method used

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  • Phenol-containing wastewater treatment process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of phenolic waste water treatment process is characterized in that, its step comprises:

[0020] (1) Electrode pretreatment

[0021] Take the titanium plate and polish it with sandpaper, rinse it with distilled water first, then put it into absolute ethanol for ultrasonic cleaning for 3-5 minutes, take it out and rinse it with distilled water, then rinse the titanium plate with hydrofluoric acid for 4 seconds, and finally rinse it with distilled water for later use;

[0022] (2) Preparation of degraded anode electrodes

[0023] Dissolve 1mM copper nitrate and 10mM urea in 80mL of ultrapure water (in 5cm 2 Titanium plate meter) to form a blue transparent solution, put the titanium plate vertically into the hydrothermal reaction kettle, transfer the solution to the reaction kettle so that the liquid level is higher than the height of the titanium plate, and heat the reaction kettle at 120°C After 12 hours, take out the titanium plate, rinse it with distilled wate...

Embodiment 2

[0027] A kind of phenolic waste water treatment process is characterized in that, its step comprises:

[0028] (1) Electrode pretreatment

[0029] Take the titanium plate and polish it with sandpaper, rinse it with distilled water first, then put it into absolute ethanol for ultrasonic cleaning for 4 minutes, take it out and rinse it with distilled water, then rinse the titanium plate with hydrofluoric acid for 4 seconds, and finally rinse it with distilled water for later use;

[0030] (2) Preparation of degraded anode electrodes

[0031] Dissolve 1mM copper nitrate and 10mM urea in 80mL of ultrapure water (in 5cm 2 Titanium plate meter) to form a blue transparent solution, put the titanium plate vertically into the hydrothermal reaction kettle, transfer the solution to the reaction kettle so that the liquid level is higher than the height of the titanium plate, and heat the reaction kettle at 130°C After 10 hours, take out the titanium plate, rinse it with distilled water,...

Embodiment 3

[0035] A method for researching anthracnose pollution-free prevention and control technology, is characterized in that, its step comprises:

[0036] (1) Electrode pretreatment

[0037] After polishing the titanium plate with sandpaper, rinse it with distilled water first, then put it into absolute ethanol for ultrasonic cleaning for 5 minutes, take it out and rinse it with distilled water, then rinse the titanium plate with hydrofluoric acid for 4 seconds, and finally rinse it with distilled water for later use;

[0038] (2) Preparation of degraded anode electrodes

[0039] Dissolve 1mM copper nitrate and 10mM urea in 80mL of ultrapure water (in 5cm 2 Titanium plate meter) to form a blue transparent solution, put the titanium plate vertically into the hydrothermal reaction kettle, transfer the solution to the reaction kettle so that the liquid level is higher than the height of the titanium plate, and heat the reaction kettle at 150°C After 10 hours, take out the titanium pl...

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Abstract

The invention discloses a phenol-containing wastewater treatment process. In step (1), the time for rinsing a titanium plate with hydrofluoric acid is 4 seconds; the hydrofluoric acid is highly corrosive to the titanium plate and can remove an oxide film on the surface of the titanium plate, so as to remove the oxide film within 4 seconds and prevent the excessive corrosion of the titanium plate; an organic solvent in step (1) is absolute ethyl alcohol; the solvent has excellent solubility, can remove oil on the surface of the titanium plate, and is low in price and extensive in source; in step (2), the titanium plate is vertically placed in a hydrothermal reaction kettle, so that copper oxide films can grow on and be attached to both sides of the titanium plate; in step (3), a cathode adopts a copper electrode, wherein the electrode has performances close to a platinum electrode, but is lower in prices; sodium sulfate is added to the phenol-containing wastewater before degradation in step (3) and can be used as an electrolyte, so that the degradation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of water pollution prevention and control, in particular to a process for treating phenol-containing wastewater. Background technique [0002] The effective treatment of refractory organic pollutants in water (such as phenols, aromatic amines and pesticides, etc.) has always been a hot and difficult research topic in the field of environmental engineering. Phenolic substances are toxic and difficult to biodegrade organic pollutants, and their main sources are organic synthesis, explosives, dyes and other fields. In view of the extreme toxicity of nitrophenols, the phenol in natural water should be controlled at 10ng L -1 the following. At present, the methods for treating phenol wastewater include biological methods, adsorption methods, and extraction methods. Such pollutants cannot be degraded by aerobic biodegradation. At the same time, aerobic degradation produces hydroxylamine, which is considered to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/34
CPCC02F1/46104C02F1/46109C02F2001/46133C02F2101/345
Inventor 梁明钟华张兵张霞
Owner ANHUI GUONENG YISHENG ENVIRONMENTAL PROTECTION SCI & TECH
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