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Plant-based sludge activated carbon for decolorization of dye wastewater and preparation method of plant-based sludge activated carbon

A technology for sludge activated carbon and dye wastewater, which is applied in water/sludge/sewage treatment, water pollutants, water/sewage treatment, etc., can solve the problems of large industrial application restrictions, complex processes, and high raw material prices, and achieves high production efficiency. The method is simple, the adsorption is firm, and the adsorption force is high.

Inactive Publication Date: 2017-03-08
佛山慧创正元新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material prepared by this invention can achieve the goal of decolorization, degradation, and mineralization of dye wastewater in a short period of time, but the raw material price of this invention is relatively high, the process is relatively complicated, and the industrial application is greatly restricted

Method used

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  • Plant-based sludge activated carbon for decolorization of dye wastewater and preparation method of plant-based sludge activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] After the sludge is dried, it is ground to prepare sludge powder; after the waste plant-based biomass is dried, it is crushed to obtain powder; 100g of sludge powder, 30g of bagasse and 4g of pentlandite powder are mixed evenly, and 70mL of After the activator is evenly stirred, it is pressed into a mold; the molded mixture is placed in an oven, activated at a temperature of 90°C for 60 hours, and then transferred to a muffle furnace for calcination and carbonization at a temperature of 700°C. Naturally cool it to room temperature, wash until neutral, then ultrasonically clean for 90 minutes, dry, grind and pass through a 200-mesh sieve, vacuumize, and seal the package to obtain the desired activated carbon.

[0023] The activator is a mixture of zinc chloride and sodium hydroxide, the concentration of sodium hydroxide is 5%, and the concentration of zinc chloride is 5mol / L. The mold is a semi-cylindrical mold with a radius of 3 cm and a height of 5 cm.

Embodiment 2

[0025] After the sludge is dried, it is ground to prepare sludge powder; after the waste plant-based biomass is dried, it is crushed to obtain powder; 100g of sludge powder, 40g of pomelo peel and 3g of pentlandite powder are mixed evenly, and 80mL of After the activator is evenly stirred, it is pressed into a mold; the molded mixture is placed in an oven, activated at a temperature of 110°C for 36 hours, and then transferred to a muffle furnace for calcination and carbonization at a temperature of 730°C. Naturally cool it to room temperature, wash until neutral, then ultrasonically clean for 60 minutes, dry, grind and pass through a 200-mesh sieve, vacuumize, and seal the package to obtain the required activated carbon.

[0026] The activator is a mixture of zinc chloride and sodium hydroxide, the concentration of sodium hydroxide is 5%, and the concentration of zinc chloride is 5mol / L. The mold is a semi-cylindrical mold with a radius of 3 cm and a height of 5 cm.

Embodiment 3

[0028] After the sludge is dried, it is ground to prepare sludge powder; after the waste plant-based biomass is dried, it is crushed to obtain powder; 100g of sludge powder, 20g of sawdust and 2g of pentlandite powder are mixed evenly, and 70mL of pentlandite powder is added dropwise to activate After stirring evenly, it is pressed into a mold; the molded mixture is placed in an oven, activated at a temperature of 100°C for 48 hours, then transferred to a muffle furnace, and calcined and carbonized at a temperature of 580°C. After it is naturally cooled to normal temperature, it is washed to neutrality, then ultrasonically cleaned for 50 minutes, dried, ground and passed through a 200-mesh sieve, vacuumed, sealed and packaged to obtain the required activated carbon.

[0029] The activator is a mixture of zinc chloride and sodium hydroxide, the concentration of sodium hydroxide is 5%, and the concentration of zinc chloride is 5mol / L. The mold is a semi-cylindrical mold with a r...

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Abstract

The invention discloses plant-based sludge activated carbon for decolorization of dye wastewater. A preparation method of the plant-based sludge activated carbon comprises steps as follows: 100 parts of sludge powder, 20- 40 parts of waste plant-based biomass powder and 2-4 parts of pentlandite powder are mixed uniformly, an activator is added dropwise, the mixture is stirred uniformly, subjected to press molding in a mold, then placed in an oven for activation at 90-120 DEG C for 36-60 h and transferred to a muffle furnace for calcination carbonation at 520-730 DEG C. The activated carbon is prepared from sludge and plant waste as raw materials through modification with added ore, has a good decolorization effect on the dye wastewater and adopts cheap raw materials which are all from waste. Therefore, the use rate of resources is increased, and the cost is saved.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a plant-based sludge activated carbon used for decolorizing dye wastewater and a preparation method thereof. Background technique [0002] The printing and dyeing industry will discharge a large amount of wastewater during the production process. These wastewaters have problems such as high organic content, darker color, complex water quality, and poor biodegradability. They contain a large amount of dyes, which will produce benzidines after degradation. Carcinogens can have a serious impact on human health. Therefore, the decontamination treatment of dye wastewater has become a hotspot of current research. [0003] Sludge from sewage treatment plants refers to flocculent substances produced during sewage treatment, which contain a large amount of water and rich organic matter, as well as harmful substances such as heavy metals and pathogenic bacteria. Therefore, the sludge with...

Claims

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Application Information

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IPC IPC(8): C01B32/348C01B32/324C02F1/28B01J20/20B01J20/30C02F101/30
CPCC02F1/283B01J20/20C01P2006/12C02F2101/308
Inventor 叶青
Owner 佛山慧创正元新材料科技有限公司
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