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Microelectrolysis filler and process for treating printing and dyeing wastewater

A printing and dyeing wastewater, micro-electrolysis technology, applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. The effect of avoiding interference and simplifying the process flow

Inactive Publication Date: 2017-08-25
江苏艾特克环境工程设计研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, because most of the printing and dyeing wastewater is alkaline, when the printing and dyeing wastewater is treated by iron-carbon micro-electrolysis, it is necessary to adjust the wastewater to acidity first, and then adjust it back with alkali after treatment, which increases the cost and process complexity

Method used

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  • Microelectrolysis filler and process for treating printing and dyeing wastewater

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Experimental program
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Effect test

Embodiment 1

[0044] A micro-electrolytic filler for treating printing and dyeing wastewater. The micro-electrolytic filler is a ternary filler based on Fe, C, and Al. The composition of the ternary micro-electrolytic filler is:

[0045] Iron 20%

[0046] Activated carbon 30%

[0047] Aluminum 25%

[0048] Clay 20%

[0049] Sodium Carboxymethyl Cellulose 5%

[0050] After the filler granulation is completed, it is fired at 800°C for 2 hours.

[0051] A micro-electrolysis process for treating printing and dyeing wastewater, using the above-mentioned micro-electrolysis filler, the printing and dyeing wastewater uses anthraquinone dyes as the main pollutant, comprising the following steps:

[0052] A. Introduce printing and dyeing wastewater into the micro-electrolysis reaction pool;

[0053] B, monitor the pH of the waste water to be about 8, and add sodium hydroxide reagent to adjust the pH of the printing and dyeing waste water in the micro-electrolysis reaction pool, so that the pH is...

Embodiment 2

[0059] A micro-electrolytic filler for treating printing and dyeing wastewater. The micro-electrolytic filler is a ternary filler based on Fe, C, and Al. The composition of the ternary micro-electrolytic filler is:

[0060] Iron 15%

[0061] Activated carbon 30%

[0062] Aluminum 15%

[0063] Clay 30%

[0064] Sodium Carboxymethyl Cellulose 10%

[0065] After the filler granulation is completed, bake at 1000°C for 2 hours

[0066] A micro-electrolysis process for treating printing and dyeing wastewater, using the above-mentioned micro-electrolysis filler, comprising the steps of:

[0067] A. Introduce printing and dyeing wastewater into the micro-electrolysis reaction pool;

[0068] B, monitor the pH of the waste water to be about 10, and add sodium hydroxide reagent to adjust the pH of the printing and dyeing waste water in the micro-electrolysis reaction pool, so that the pH is 11-12;

[0069] C. Monitor and turn on the aeration device to adjust the DO of the printing ...

Embodiment 3

[0074] A micro-electrolytic filler for treating printing and dyeing wastewater. The micro-electrolytic filler is a ternary filler based on Fe, C, and Al. The composition of the ternary micro-electrolytic filler is:

[0075] Iron 20%

[0076] Activated carbon 30%

[0077] Aluminum 20%

[0078] Clay 25%

[0079] Sodium Carboxymethyl Cellulose 5%

[0080] After the filler granulation is completed, bake at 900°C for 2 hours

[0081] A micro-electrolysis process for treating printing and dyeing wastewater, using the above-mentioned micro-electrolysis filler, the printing and dyeing wastewater is comprehensive wastewater from multiple printing and dyeing factories, including the following steps:

[0082] A. Introduce printing and dyeing wastewater into the micro-electrolysis reaction pool;

[0083] B, monitor the pH of this waste water to be about 11.8;

[0084] C. Monitor and turn on the aeration device to adjust the DO in the printing and dyeing wastewater in the micro-elect...

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Abstract

The invention discloses a microelectrolysis filler for treating printing and dyeing wastewater. The microelectrolysis filler is a ternary filler based on Fe, C and Al and contains the following components in percentage by weight: 15%-25% of iron, 30%-40% of activated carbon, 15%-25% of aluminum, 20%-30% of clay and 0-10% of sodium carboxymethylcellulose. The ternary microelectrolysis filling based on Fe, C and Al is used for directly treating the printing and dyeing wastewater, so that the technical process is simplified, meanwhile, the use amounts of acid-base reagents are reduced, and the cost is effectively saved.

Description

technical field [0001] The invention relates to a wastewater treatment process, in particular to a micro-electrolytic filler and a process for treating printing and dyeing wastewater. Background technique [0002] The micro-electrolysis process uses the principle of the original battery to produce oxidation-reduction, flocculation and adhering effects in the aqueous solution. When using this principle to treat printing and dyeing wastewater, the electrode product can destroy the chromophoric group to remove the chroma, and at the same time it can Make some refractory long-chain organics break chain or ring-opening macromolecular organics and transform them into biodegradable small molecular organics to improve biochemical properties; the generated metal hydroxides have high adsorption and flocculation activities, and through flocculation precipitation, Some suspended and colloidal particles or organic polymers can be removed. [0003] In practical applications, iron-carbon ...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/463C02F1/467C02F9/06C02F101/30
Inventor 蒋素英李俊波吴智仁蔡培杰谢菁梅林明吴向阳
Owner 江苏艾特克环境工程设计研究院有限公司
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