Treatment method of methylene blue dye waste water

A methylene blue dye and treatment method technology, which is applied in the field of methylene blue dye wastewater treatment, can solve the problems of small adsorption capacity and harsh environmental conditions, and achieve the effects of fast adsorption rate, good hydrophilicity, easy elution and reuse

Inactive Publication Date: 2016-09-21
DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently commonly used mesoporous silica materials have small adsorption capacity and harsh environmental conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A treatment method for methylene blue dye wastewater, comprising the following steps:

[0023] (1) Preparation of adsorbent:

[0024] Dissolve 2g of 1,4,7,10-tetraazacyclododecane, 1.5g of potassium iodide and 6g of potassium carbonate in 200ml of tetrahydrofuran, under nitrogen protection, add 1g of chlorine-functionalized mesoporous silica, and keep stirring Reflux for 20 hours, cool to room temperature after the reaction, filter to obtain the product, alternately wash with ethanol and water for 2-5 times, and vacuum dry at 60°C for 12 hours to obtain a modified silica adsorbent;

[0025] (2) Add 0.5 g of the modified silica adsorbent prepared in step (1) to every liter of methylene blue dye wastewater, and adjust the pH of the dye wastewater to 5-10, and stir for 24 hours at 3000 rpm , standing and filtering to remove the adsorbent adsorbed with methylene blue dye, that is, removing the methylene blue dye in the wastewater.

Embodiment 2

[0027] A treatment method for methylene blue dye wastewater, comprising the following steps:

[0028] (1) Preparation of adsorbent:

[0029] Dissolve 5g of 1,4,8,11-tetraazacyclotetradecane, 1,4,8,12-tetraazacyclopentadecane, 3.5g of potassium iodide and 11g of potassium carbonate in 400ml of acetonitrile, under nitrogen protection, Add 1.2g of chlorine-functionalized mesoporous silica, reflux reaction for 40h under continuous stirring, cool to room temperature after the reaction, filter to obtain the product, alternately wash with ethanol and water for 2-5 times, and vacuum dry at 80°C for 16h. obtain a modified silica adsorbent;

[0030] (2) Add 0.8 g of the modified silica adsorbent prepared in step (1) to every liter of methylene blue dye wastewater, and adjust the pH of the dye wastewater to 5-10, and stir for 48 hours at 5000 rpm , standing and filtering to remove the adsorbent adsorbed with methylene blue dye, that is, removing the methylene blue dye in the wastewater...

Embodiment 3

[0032] A treatment method for methylene blue dye wastewater, comprising the following steps:

[0033] (1) Preparation of adsorbent:

[0034] Dissolve 3g of 1,4,8,12-tetraazacyclopentadecane, 2g of potassium iodide and 7g of potassium carbonate in 250ml of toluene, under nitrogen protection, add 1.05g of chlorine-based functionalized mesoporous silica, and keep stirring Under reflux for 25 hours, cool to room temperature after the reaction, filter to obtain the product, alternately wash with ethanol and water for 2-5 times, and vacuum dry at 65°C for 13 hours to obtain a modified silica adsorbent;

[0035] (2) Add 0.6 g of the modified silica adsorbent prepared in step (1) to every liter of methylene blue dye wastewater, and adjust the pH of the dye wastewater to 5-10, and stir for 30 hours at 3500 rpm , standing and filtering to remove the adsorbent adsorbed with methylene blue dye, that is, removing the methylene blue dye in the wastewater.

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PUM

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Abstract

The invention discloses a treatment method of methylene blue dye waste water. The treatment method comprises the following steps: firstly, an aza-macrocyclic ligand, potassium iodide and potassium carbonate are dissolved in an organic solvent, mesoporous silica with a functional chlorine group is added under the protection of nitrogen, the mixture is subjected to a reflux reaction for 20-40 h while being constantly stirred and is cooled to the room temperature after the reaction ends, a product is obtained after filtration, washed with ethanol and water 2-5 times alternately and dried under a vacuum condition at the temperature of 60-80 DEG C for 12-16 h, and a modified silica adsorbent is obtained; then the modified silica adsorbent is added to the methylene blue dye waste water, the pH of the dye waste water is adjusted to range from 5 to 10, the mixture is stirred at the speed of 3,000-5,000 r/m for 24-28 h, left to stand still and filtered to remove the adsorbent adsorbing methylene blue dye, and the methylene blue dye in the waste water is removed. The method is simple, convenient and quick to operate, the treatment cost is low, the adopted adsorbent can adsorb a large amount of dye, and the methylene blue dye in the methylene blue dye waste water can be effectively removed.

Description

Technical field: [0001] The invention relates to the field of organic dye wastewater treatment, in particular to a treatment method for methylene blue dye wastewater. Background technique: [0002] Dye wastewater is a kind of industrial wastewater with a large amount and a wide range, which causes serious pollution to the ecological environment. With the development of my country's printing and dyeing industry, the annual discharge of dye wastewater in the country is about 1.3×10 9 m 3 , accounting for 35% of the total industrial wastewater discharge. Dye wastewater mainly comes from the production of dyes and dye intermediates and the printing and dyeing industry. It has complex components, high COD, high chroma, high salt content, large changes in water quality, and is difficult to biodegrade. After entering the water body, it will affect the photosynthesis of aquatic plants, thus Destroy the ecological balance in the water and cause environmental problems. [0003] Me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01J20/22C02F101/30C02F103/30
CPCC02F1/288B01J20/22C02F1/285C02F2101/308C02F2103/30
Inventor 王文庆
Owner DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD
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