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Electrochemical reactor of graphene-Ti electrode for treating printing and dyeing wastewater

A printing and dyeing wastewater and reactor technology, which is applied in textile industry wastewater treatment, water/sewage treatment, chemical instruments and methods, etc., can solve problems that have not been reported, and achieve high removal efficiency, simple operation and management, and stable effluent quality Effect

Active Publication Date: 2013-10-16
WENDENG HAODUN FAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no report on the electrochemical reactor for printing and dyeing wastewater treatment using graphene and Ti as electrodes

Method used

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  • Electrochemical reactor of graphene-Ti electrode for treating printing and dyeing wastewater
  • Electrochemical reactor of graphene-Ti electrode for treating printing and dyeing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A novel graphene-Ti electrode printing and dyeing wastewater treatment electrochemical reactor, including a reactor body 1, a pump 2, a power supply 3, a Ti electrode 4, a graphene film electrode 5 and a bracket 6, the reactor body 1 is a hollow structure, and the bracket 6 is a metal grid structure and is set at 1 / 2 height of the inner wall of the reactor body 1, and the Ti electrode 4 has a thickness of 0.3mm and an area of ​​0.15m 2 The metal Ti sheet is arranged on the top of the reactor body 1, and the graphene film electrode 5 is covered and arranged on the support 6. The area of ​​the graphene film electrode 5 is the same as the cross-sectional area of ​​the reactor body 1, and the positive electrode of the power supply 3 is the same as the graphene electrode. Thin film electrode 5 is connected, and the negative pole of power supply 3 is connected with Ti electrode 4; Reactor body 1 is also provided with reactor inlet 7 and reactor outlet 8, and reactor inlet 7 is...

Embodiment 2

[0034] A novel graphene-Ti electrode printing and dyeing wastewater treatment electrochemical reactor, the main structure is the same as that of Example 1, the difference is that the graphene film electrode 5 is prepared as follows:

[0035] Dissolve graphene in ultrapure water at a mass volume ratio of 0.5g / L, and ultrasonically disperse it for 5 minutes to prepare graphene hydrogel, and then vacuum filter the graphene hydrogel onto a nylon filter membrane with a pore size of 0.22 μm , and dried in a 45°C drying oven to obtain a graphene film electrode.

[0036] The treated printing and dyeing wastewater is collected at the outlet 8 of the reactor and its chromaticity and total organic carbon content (TOC content) are measured. Compared with the printing and dyeing wastewater before treatment, the decolorization rate and TOC removal rate are calculated. The printing and dyeing wastewater treated by the novel graphene-Ti electrode printing and dyeing wastewater electrochemical...

Embodiment 3

[0038] A novel graphene-Ti electrode printing and dyeing wastewater treatment electrochemical reactor, the main structure is the same as that of Example 1, the difference is that the voltage of the power supply 3 is 3.0V.

[0039]The treated printing and dyeing wastewater is collected at the outlet 8 of the reactor and its chromaticity and total organic carbon content (TOC content) are measured. Compared with the printing and dyeing wastewater before treatment, the decolorization rate and TOC removal rate are calculated. The printing and dyeing wastewater treated by the novel graphene-Ti electrode printing and dyeing wastewater electrochemical reactor of this embodiment has a decolorization rate of 97% and a TOC removal rate of 96%.

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Abstract

The invention relates to a novel graphene-Ti electrode printing and dyeing wastewater treatment electrochemical reactor. The reactor comprises a reactor body, a pump, a power supply, a Ti electrode, a graphene membrane electrode and a support; the reactor body is provided with a hollow structure; the support is arranged in the reactor body; the Ti electrode is a Ti plate and is arranged at the top end of the reactor body; the graphene membrane electrode is arranged on the support; a positive electrode of the power supply is electrically connected with the graphene membrane electrode, while a negative electrode of the power supply is connected with the Ti electrode; the reactor body is also provided with a reactor inlet and a reactor outlet; the reactor inlet is formed between the Ti electrode and the graphene membrane electrode; the reactor outlet is formed between the graphene membrane electrode and the bottom end of the reactor body; and the pump is connected with the reactor inlet.According to the novel graphene-Ti electrode printing and dyeing wastewater treatment electrochemical reactor, the printing and dyeing wastewater is treated through the electrode manufactured by the graphene membrane, so that the printing and dyeing wastewater can be treated by absorbing, and the electrolytic treatment can be realized; the removal efficiency of the total organic carbon content ishigh; and the power supply is low in voltage, so that less power is consumed.

Description

technical field [0001] The invention relates to a novel graphene-Ti electrode printing and dyeing wastewater treatment electrochemical reactor, which belongs to the technical field of wastewater treatment. Background technique [0002] The textile printing and dyeing industry is one of the industrial sectors in my country that consumes a lot of water and discharges a lot of wastewater; this kind of wastewater often contains a variety of organic dyes and their intermediates, which have large emissions, complex components, deep chroma, and strong toxicity. Refractory to degradation, large fluctuations in pH value, high concentration of components and large changes. The general treatment methods are: physical method (such as: filtration method, sedimentation method, air flotation method and magnetic separation method, etc.), chemical method (such as: chemical coagulation method, oxidation method and electrolysis method, etc.) and biochemical methods. Among them, the traditional...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F1/463C02F1/28C02F103/30
Inventor 王曙光邢苏芳孙雪菲
Owner WENDENG HAODUN FAN
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