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Method for preparing combined modified catalyst for processing coloring agent waste water

A dye wastewater and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., to achieve no secondary pollution, expand potential difference, and mild reaction conditions Effect

Inactive Publication Date: 2009-04-22
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no relevant reports on the parallel connection of the two methods to synergistically treat dye wastewater at home and abroad.

Method used

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  • Method for preparing combined modified catalyst for processing coloring agent waste water
  • Method for preparing combined modified catalyst for processing coloring agent waste water
  • Method for preparing combined modified catalyst for processing coloring agent waste water

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Catalyst method: add 100mL hydrazine hydrate to 200mL copper sulfate pentahydrate solution (concentration: 0.5mol / L) under vigorous stirring and age for 30min to obtain a reddish-brown suspension, in which the reddish-brown precipitate is mainly cuprous oxide and elemental copper; then slowly add 20g of industrial iron powder (purchased from Shenyang Daxing Metal Material Factory), stir for 2min, filter to obtain a precipitate, wash the precipitate with distilled water, and dry at 80°C to obtain a taupe composite powder. That is the catalyst. The filtrate obtained during the filtration can be reused.

Embodiment 2

[0035] The difference from Example 1 is that

[0036] Catalyst method: add 80mL hydrazine hydrate to 300mL copper sulfate pentahydrate solution (concentration: 0.2mol / L) under vigorous stirring and age for 15min, then slowly add 15g industrial iron powder, stir for 5min, and filter to obtain the precipitate. The precipitate was washed with distilled water and dried at 70°C to obtain the catalyst.

Embodiment 3

[0038] Catalyst method: add 150mL hydrazine hydrate to 250mL copper sulfate pentahydrate solution (concentration: 0.4mol / L) under vigorous stirring and age for 35min, then slowly add 30g industrial iron powder, stir for 4min, and filter to obtain the precipitate. The precipitate was washed with distilled water and dried at 100°C to obtain the catalyst.

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Abstract

The invention relates to dye wastewater disposal, in particular to a method for preparing a catalyst for disposing the combined modification of dye wastewater. The method specifically comprises the following steps: 80 to 200 ml of hydrazine hydrate is added into 150 to 400 ml of a copper sulfate pentahydrate solution in a stirring state, is aged for 15 to 35 minutes, is subsequently added with 15 to 30 grams of industrial iron powder, is stirred for 2 to 5 minutes and is filtered to obtain sediment; and the sediment is washed through distilled water and is dried to obtain the catalyst. The method effectively combines two methods of internal electrolysis and photocatalysis together to prepare the high-efficient, economic and innoxious catalyst and has the advantages of stable performance, high efficiency, wide applicability, no pollution, friendliness to environment, thereby strengthening the dye wastewater disposal. The catalyst has a simple preparation process, mild reaction condition, and cheapness and wide source of raw materials.

Description

technical field [0001] The invention relates to the treatment of dye wastewater, in particular to a method for preparing a combined modification catalyst for treating dye wastewater. Background technique [0002] With the development of the chemical industry, the variety of dyes used in the printing and dyeing industry is increasing, not only the number of rings in the structure increases, the carbon chain increases, and the dyeing groups also increase, but also often contain a variety of biological toxicity or "three causes" (carcinogenic , teratogenic, mutagenic) effects of organic pollutants, these organic pollutants discharged into the water environment, it is difficult to use conventional methods for treatment, especially the remaining dye components in wastewater even if the concentration is very low, discharged into the water body will The light transmittance of the water body is reduced, leading to the destruction of the water body ecosystem, and the resulting ecolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J23/72C02F1/30C02F103/30
CPCY02W10/37
Inventor 安婧周启星
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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