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Method for preparing adsorbent from waste crop straws as well as use method and regeneration method of adsorbent

A technology of discarded straw and adsorbent, which is applied in the field of environmental protection material preparation and application, can solve the problems of vegetation reduction, land desertification, waste of natural resources, etc., and achieve the effect of reducing production costs and simplifying the process

Inactive Publication Date: 2015-04-01
XICHANG COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The massive deforestation and use of forests has led to the reduction of vegetation, which has brought about desertification, global warming and other disadvantages.
Therefore, it is not feasible to use coal and cut down trees to make activated carbon, which not only increases the production cost of activated carbon, but also is a waste of natural resources.

Method used

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  • Method for preparing adsorbent from waste crop straws as well as use method and regeneration method of adsorbent
  • Method for preparing adsorbent from waste crop straws as well as use method and regeneration method of adsorbent
  • Method for preparing adsorbent from waste crop straws as well as use method and regeneration method of adsorbent

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Embodiment Construction

[0028] In order to solve the predicament in the prior art of consuming a large amount of non-renewable coal resources or forest materials that cause environmental damage to prepare sewage treatment adsorbents, the present invention provides a low-cost raw material and simple production process using waste crop straws to prepare The preparation method of the adsorbent; at the same time, the present invention also provides a method for treating sewage by using the adsorbent and a regeneration treatment method for treating the adsorbent after absorbing the dirt. The preparation method comprises the following steps,

[0029] a. Prepare materials, select lignified or fibrous agricultural crop waste straw, remove impurities and crush it into 1-2cm particles, dry it for later use;

[0030] B, pulverize the base material, after pulverizing the dry granular material obtained in step a through a pulverizer, use 80 to 120 mesh sieves to sieve to make the pulverized base material for subs...

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Abstract

The invention discloses a method for preparing an adsorbent from waste crop straws, a treatment method for treating wastewater with the adsorbent, a regeneration treatment method for treating the adsorbent after absorbing sewage, and belongs to the technical field of preparation and application of environment-friendly materials. The preparation method, the treatment method and the regeneration treatment method, provided by the invention have the characteristics that the raw material cost is low and the production process is simple. The preparation method comprises the steps of preparing raw materials, pulverizing a blank material and carbonizing. The treatment method comprises the steps of modulating the pH value, adding the adsorbent in proportion and stirring. The regeneration treatment method comprises the steps of preparing an HCl solution, adding the saturated adsorbent in proportion, stirring, flushing and drying.

Description

technical field [0001] The invention relates to a method for preparing an adsorbent, in particular to a method for preparing an adsorbent by using waste crop stalks, and belongs to the technical field of preparation and application of environmental protection materials. The invention also relates to a treatment method for treating sewage by using the adsorbent and a regeneration treatment method for treating the adsorbent after absorbing dirt. Background technique [0002] Activated carbon is a common adsorption material. Due to its well-developed pore structure, adsorption capacity, and simple production process, it has been widely used, and it has been involved in various aspects of environmental protection, industrial production and daily life. The materials used to make activated carbon are easy to obtain, and there are various types. According to the source of raw materials, they mainly include coal-based activated carbon, wood activated carbon and fruit shell activated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30B01J20/34C02F1/28C02F1/62
CPCB01J20/24B01J20/3425B01J20/3475B01J2220/4825C02F1/286C02F2101/22
Inventor 陈金发钱波李向婷姚小波李静
Owner XICHANG COLLEGE
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