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Method for treating low-concentration difficult-to-degrade organic wastewater through adsorption-electrocatalysis combination

A technology of organic wastewater and electrocatalysis, applied in the direction of adsorption water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve the problems of mass transfer control difficulties, avoid secondary pollution, improve degradation effect, and solve The effect of mass transfer problems

Inactive Publication Date: 2018-11-09
山东深信节能环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the current density of the treatment process is determined, it is more difficult to solve the problem of mass transfer control

Method used

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  • Method for treating low-concentration difficult-to-degrade organic wastewater through adsorption-electrocatalysis combination
  • Method for treating low-concentration difficult-to-degrade organic wastewater through adsorption-electrocatalysis combination
  • Method for treating low-concentration difficult-to-degrade organic wastewater through adsorption-electrocatalysis combination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1) Dilute the adsorbent particles according to 2.0g·L -1 The proportion added to 1L concentration is 5mg·L -1 In the simulated wastewater of ARG, it was adsorbed for 60min under stirring state, and the above suspension was centrifuged at 4000rpm to separate the solid and liquid. The separated adsorbent enters the subsequent desorption process.

[0041] 2) Add the adsorbent separated in 1) to 70mL of 0.1mol L-1 in NaOH solution. Desorb for 20 minutes in a stirred state, let it stand for sedimentation, filter and separate the adsorbent, and perform electrocatalytic oxidation treatment on the separated desorption liquid.

[0042] 3) Add the desorption liquid separated in 2) into the electrocatalytic reactor, use the titanium matrix lead dioxide electrode as the water treatment anode, and use the copper sheet as the water treatment cathode, and perform electrocatalytic oxidation on the desorption liquid under the condition of power supply deal with. Before the electroca...

Embodiment 2

[0051] 1) Dilute the adsorbent particles according to 3.0g·L -1 The proportion added to 1L concentration is 10mg·L -1 In the simulated wastewater of ARG, it was adsorbed for 60min under stirring state, and the above suspension was centrifuged at 4000rpm to separate the solid and liquid. The separated adsorbent enters the subsequent desorption process.

[0052] 2) Add the adsorbent separated in 1) to 70mL of 0.1mol L -1 in NaOH solution. Desorb for 20 minutes in a stirred state, let it stand for sedimentation, filter and separate the adsorbent, and perform electrocatalytic oxidation treatment on the separated desorption liquid.

[0053] 3) Add the desorption liquid separated in 2) into the electrocatalytic reactor, use the titanium matrix lead dioxide electrode as the water treatment anode, and use the copper sheet as the water treatment cathode, and perform electrocatalytic oxidation on the desorption liquid under the condition of power supply deal with. Before the electr...

Embodiment 3

[0057] 1) Dilute the adsorbent particles according to 5.0g·L -1 The proportion added to 1L concentration is 20mg·L -1 In the simulated wastewater of ARG, it was adsorbed for 60min under stirring state, and the above suspension was centrifuged at 4000rpm to separate the solid and liquid. The separated adsorbent enters the subsequent desorption process.

[0058] 2) Add the adsorbent separated in 1) to 70mL of 0.1mol L -1 in NaOH solution. Desorb for 20 minutes in a stirred state, let it stand for sedimentation, filter and separate the adsorbent, and perform electrocatalytic oxidation treatment on the separated desorption liquid.

[0059] 3) Add the desorption liquid separated in 2) into the electrocatalytic reactor, use the titanium matrix lead dioxide electrode as the water treatment anode, and use the copper sheet as the water treatment cathode, and perform electrocatalytic oxidation on the desorption liquid under the condition of power supply deal with. Before the electr...

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Abstract

The invention relates to a wastewater treatment process, in particular to a method for treating low-concentration difficult-to-degrade organic wastewater through adsorption-electrocatalysis combination. The method comprises the steps of adding an adsorbent into the low-concentration non-biodegradable organic wastewater, after the adsorption time T, carrying out solid-liquid separation, feeding thewastewater reaching to the follow-up treatment standard or the emission standard into a follow-up treatment process, and feeding an adsorbent obtained through separation into a follow-up desorption process; adding the separated adsorbent into a desorption solution, after desorbing for a certain time, carrying out solid-liquid separation, feeding an adsorbent obtained through separation into a next adsorption process or aftertreatment process, and carrying out electrocatalytic oxidation treatment on the rest desorption solution; adding the desorption solution into an electrocatalysis reactor,powering up, and carrying out electrocatalysis treatment on organic matters in the desorption solution; feeding liquid reaching to the follow-up treatment standard or the emission standard into a follow-up process.

Description

technical field [0001] The invention relates to a waste water treatment process, in particular to a method for treating low-concentration refractory organic waste water through adsorption and electrocatalysis. Background technique [0002] Refractory biodegradable organic matter refers to organic matter that cannot be degraded by unaccustomed activated sludge under natural conditions. At present, the best way to deal with refractory organic matter is to use advanced oxidation technology to pretreat it, and after its biodegradability has been improved to a certain extent, the traditional biological treatment method is used for subsequent treatment. [0003] The electrocatalytic oxidation method is a very typical advanced oxidation technology. There are two main treatment principles: 1) Direct catalytic oxidation: The organic matter directly exchanges electrons with the electrode surface oxide on the electrode surface, and then a redox reaction occurs to change the organic mat...

Claims

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Application Information

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IPC IPC(8): C02F9/06C02F101/30
CPCC02F1/28C02F1/46109C02F1/4672C02F2101/30C02F2101/308
Inventor 徐星徐浩高宪徐强包健
Owner 山东深信节能环保科技有限公司
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