Treatment method of Congo red dye wastewater

A dye wastewater and treatment method technology, which is applied in the field of Congo red dye wastewater treatment, can solve the problems of affecting cell activity, easy to be biodegraded, poor mass transfer performance, etc., and achieve strong adsorption, low price, and low comprehensive utilization. Effect

Inactive Publication Date: 2013-09-18
NORTHEAST DIANLI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, organic polymer carriers have problems such as low strength, poor mass tran...

Method used

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  • Treatment method of Congo red dye wastewater
  • Treatment method of Congo red dye wastewater
  • Treatment method of Congo red dye wastewater

Examples

Experimental program
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Embodiment 1

[0022] Embodiment 1: a kind of method of processing Congo red dye of embodiment 1, comprises the following steps:

[0023] (1) Modification of diatomite:

[0024] Pass 100 g of purified diatomite through a 200-mesh sieve, then add a hydrochloric acid solution with a molar concentration of 5 mol / L to soak it completely, treat it at a constant temperature of 60°C for 70 minutes, and keep stirring; Wash the soil several times with distilled water until the pH value of the filtrate is neutral; dry the filtered diatomaceous earth at a temperature of 105°C, take it out and place it in a desiccator for later use; weigh 120g of crystalline aluminum chloride, and add a concentration of In a 10% sodium hydroxide solution, make the final molar ratio of crystalline aluminum chloride and sodium hydroxide 2:1, stir to make it uniform, let it stand for 15 hours, weigh 60g of diatomite in the desiccator and add it to the solution , stir to mix evenly, filter and dry at a temperature of 105°C...

Embodiment 2

[0032] Embodiment 2: a kind of method of processing Congo red dyestuff of embodiment 2, comprises the following steps:

[0033] (1) Modification of diatomite:

[0034] Pass 120 g of the modified diatomite through a 200-mesh sieve, then add a hydrochloric acid solution with a molar concentration of 5.5 mol / L to soak it completely, treat it at a constant temperature of 70°C for 80 minutes, and keep stirring; Celite was washed several times with distilled water until the pH of the filtrate was neutral. Dry the filtered diatomaceous earth at a temperature of 105°C, weigh 130g of crystalline aluminum chloride, and add it to a sodium hydroxide solution with a concentration of 12%, so that the final molar ratio of crystalline aluminum chloride to sodium hydroxide is 2: 1. Stir to make it even, let it stand for 20 hours, weigh 70g of diatomaceous earth in the desiccator and add it to the solution, stir to mix evenly, filter and dry at a temperature of 105°C; then place it in a muffle...

Embodiment 3

[0042] Embodiment 3: a kind of method of processing Congo red dyestuff of embodiment 3, comprises the following steps:

[0043] (1) Modification of diatomite:

[0044] Pass 150 g of the modified diatomite through a 200-mesh sieve, then add a hydrochloric acid solution with a molar concentration of 6 mol / L to soak it completely, treat it at a constant temperature of 80°C for 90 minutes, and keep stirring; Wash diatomite with distilled water several times until the pH value of the filtrate is neutral; dry the filtered diatomite at a temperature of 105°C, weigh 140g of crystalline aluminum chloride, and add 15% sodium hydroxide In the solution, make the final molar ratio of crystalline aluminum chloride and sodium hydroxide to be 2:1, stir to make it uniform, let it stand for 24 hours, weigh 80 g of diatomaceous earth spare in the desiccator and add it to the solution, stir to make it evenly mixed , dried at a temperature of 105°C after filtering; then baked in a muffle furnace ...

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Abstract

The invention relates to a treatment method of Congo red dye wastewater. The treatment method comprises the following steps of: carrying out modifying treatment on kieselguhr, immobilizing white rot fungi by the modified kieselguhr, adding 3-5g by mass of obtained modified kieselguhr with the white rot fungi being immobilized into 50mL Congo red dye wastewater; dissolving 20-40mg by mass of Congo red into 1L of a white rot fungi liquid restrictive culture medium; treating on a gas bath constant-temperature shaking table at the speed of 120rpm at 28 DEG C for 120 hours, and measuring the chroma of the dye wastewater at an interval of 24 hours; after 120 hours, discarding the treated dye wastewater, retaining the immobilized white rot fungi, adding 50mL of prepared Congo red dye wastewater with the same concentration; under the treatment conditions, measuring the chroma of the wastewater at an interval of 24 hours, and repeating 5 times at an interval of 120 hours, wherein the removal rate of the chroma of the dye wastewater is always maintained at 75.1-93.2%. The kieselguhr is purchased from Jilin Changbai Kieselguhr Co., Ltd, and the white rot fungi comes from China General Microbiological Culture Collection Center.

Description

technical field [0001] The invention belongs to the technical field of applied microbes and environmental engineering, and relates to a method for treating congo red dye wastewater by immobilizing white-rot fungi on modified carriers, in particular to properly modifying the diatomite in Changbai Mountain, Jilin Province, and converting the modified silicon Algal earth was used as the immobilized carrier of white rot fungus, and the immobilized white rot fungus was used to treat Congo red dye wastewater. Background technique [0002] Congo red is a typical disazo dye, which has 2 unsaturated chromophoric groups (azo groups) and 4 auxochromic groups (amino and sodium sulfonate groups), which belong to difficult degrade organic matter. At present, the treatment methods of Congo red dye wastewater at home and abroad can be divided into three categories: physical method, chemical method and biological method. Among them, the removal rate of organic matter by physical and chemic...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F101/38
Inventor 乔楠陈瑞佳于大禹魏群
Owner NORTHEAST DIANLI UNIVERSITY
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