Sludge carbon based Fenton-like catalyst, and preparation method and application thereof

A catalyst and sludge charcoal technology, which is applied in the field of waste resource utilization and environmental pollution control, can solve the problems of catalyst preparation that have not yet been seen, and achieve good catalytic effect, high specific surface area, and high activity.

Inactive Publication Date: 2017-07-14
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no studies and reports on the preparation of catalysts by using sludge first activated and then loaded

Method used

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Examples

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Embodiment Construction

[0028] The present invention is further described below in conjunction with specific implementation methods, but the examples do not limit the present invention in any form. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the technical field.

[0029] Unless otherwise specified, the reagents and materials used in the present invention are commercially available.

[0030] 1. Raw materials

[0031] Sludge, zinc chloride, calcium hydroxide, hydrochloric acid, ferrous sulfate.

[0032] 2. Process steps

[0033] (1) Dry the sludge at 105°C, crush and grind it and pass it through an 80-mesh sieve;

[0034] (2) Activation: Weigh 6g of sludge sludge and add ZnCl 2 / Ca(OH) 2 Compound activator, dry sludge and ZnCl 2 (5mol / L) The mass ratio of solid to liquid is 1:1 (g / mL), Ca(OH) 2 4 wt. % dry sludge mass; contact and mix the activator with the remaining sludge, put it in a constant...

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PUM

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Abstract

The invention discloses a preparation method for a sludge carbon based Fenton-like catalyst. The preparation method uses sludge as a raw material to prepare active carbon with high specific surface area through pyrolysis, and loads iron with the active carbon as a carrier to prepare a high-activity catalyst. The preparation method comprises the following steps: drying the sludge, then carrying out grinding and sieving, carrying out activation with a composite activator, after the completion of activation, carrying out high-temperature anaerobic pyrolysis with a certain heating program so as to prepare sludge carbon, then carrying out pickling, washing, drying, grinding and sieving so as to obtain sludge active carbon with high specific surface area, with the sludge active carbon as a carrier, carrying out impregnating in ferrous sulfate for 1 h, carrying out stirring for 24 h, carrying out drying for 12 h, and calcining the dried active carbon so as to prepare a high-activity sludge carbon based catalyst. The invention provides an effective method for sludge recycling; the catalyst prepared by using the method provided by the invention has high specific surface area and a plurality of active sites, so activity is extremely high; and by utilizing the catalyst provided by the invention, azo dye rhodamine B in water can be effectively removed.

Description

technical field [0001] The invention belongs to the technical field of waste resource utilization and environmental pollution control. Specifically relates to a preparation method and application of a sludge carbon-based Fenton catalyst. Background technique [0002] Sludge carbon-based Fenton catalyst With the increase in the amount of urban and industrial wastewater treatment, the amount of sludge produced in the process of sewage treatment has also increased significantly. my country has become the world's largest sludge producer, and a large amount of sludge production brings environmental problems are very serious. Therefore, the disposal of sewage sludge has become one of the most important environmental issues. Traditional sewage sludge treatment methods, such as ocean landfill and incineration, have potential environmental risks to soil, groundwater and air. From the perspective of sustainable development, new methods must be explored to maximize the reuse of sludg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745C02F1/72
CPCB01J23/745B01J35/1019B01J35/1061C02F1/722C02F2101/308C02F2305/026
Inventor 陈晓旸国媛媛洪春来姚燕来朱凤香王卫平
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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