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Method for preparing adsorbent by using municipal sludge and waste tires

A technology for municipal sludge and waste tires, applied in chemical instruments and methods, and other chemical processes, can solve problems such as pollution and waste of resources, and achieve the effects of solving pollution problems, recycling resources, and cheap raw materials

Inactive Publication Date: 2013-11-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems that the existing methods for treating municipal sludge and waste tires are likely to cause pollution and waste resources, and provide a method for preparing adsorbents using municipal sludge and waste tires

Method used

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  • Method for preparing adsorbent by using municipal sludge and waste tires
  • Method for preparing adsorbent by using municipal sludge and waste tires

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Experimental program
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specific Embodiment approach 1

[0018] Specific implementation mode one: the method for preparing the adsorbent by using municipal sludge and waste tires in this implementation mode is carried out according to the following steps:

[0019] 1. Mix the pretreated municipal sludge with the pretreated waste tires in a mass ratio of 1 to 3:1, pulverize them, and pass through a 100-mesh sieve to obtain the mixture;

[0020] 2. Add the mixture to the activator according to the ratio of the mass of the mixture to the volume of the activator: 1g: 2.5-3.5ml, and then immerse at 45-55°C for 24 hours to obtain a mixed solution;

[0021] 3. Dry the mixed solution at 105°C for 24 hours, then raise the temperature to 600-700°C at a rate of 10-20°C / min under the protection of inert gas, and stay at 600-700°C for 0.5-1h. Cool to room temperature to obtain pyrolysis product;

[0022] 4. Pickle the pyrolysis product with an HCl solution with a concentration of 3-4mol / L, then wash it with deionized water at a temperature of 80...

specific Embodiment approach 2

[0028] Embodiment 2: This embodiment differs from Embodiment 1 in that in Step 1, the pretreated municipal sludge and the pretreated waste tires are mixed in a mass ratio of 1:1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in step 2, the mixture is added to the activator according to the ratio of the mass of the mixture to the volume of the activator: 1 g: 3 ml. Others are the same as in the first embodiment.

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Abstract

The invention discloses a method for preparing an adsorbent by using municipal sludge and waste tires, and relates to a method for preparing an adsorbent. The method comprises the following steps of: I, mixing pretreated municipal sludge with pretreated waste tires, and then crushing and screening to obtain a mixture; II, adding the mixture into an activating agent to steep so as to obtain mixed liquor; III, drying the mixed liquor and pyrolyzing under the protection of inert gas so as to obtain a pyrolyzed product; and IV, scouring, washing and drying the pyrolyzed product to obtain the adsorbent. The adsorbent is prepared by using municipal sludge and waste tires as raw materials, so that low-cost raw materials are provided for the production of the adsorbent, the municipal sludge and the waste tires are reasonably treated, the environment pollution problems caused by the municipal sludge and the waste tires are solved, and the harmless, quantity-reduced and recycling treatments of solid wastes are realized.

Description

technical field [0001] The invention relates to a method for preparing an adsorbent. Background technique [0002] With the large-scale construction and operation of sewage treatment plants in my country and the continuous improvement of sewage treatment rate, the output of municipal sludge has increased significantly. Municipal sludge is a kind of semi-dry solid waste with high moisture content (93%-99%) and a large amount of organic matter with complex rheological characteristics. It is rich in plant nutrients such as nitrogen, phosphorus, and potassium, and contains toxic Harmful substances (such as parasite eggs, pathogenic microorganisms, bacteria and heavy metals, etc.). Sludge is the factor that affects the environment and causes the most serious harm among all water treatment process wastes. If the sludge is not properly disposed of, it will inevitably cause secondary pollution, and it is also a serious waste of resources. [0003] Tire is an important petrochemica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30
Inventor 李伟光李鑫王广智
Owner HARBIN INST OF TECH