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Water floating carbon and method for separating soil heavy metals by using same

A water-floating carbon and heavy metal technology, which is applied in the restoration of polluted soil, alkali metal compounds, chemical instruments and methods, etc., can solve the problems of easy desorption of adsorbates, adsorption saturation, pore blockage, etc., and achieve good effect and void space. Well-developed, low-cost effects

Pending Publication Date: 2020-12-29
遂昌高净界净化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In recent years, it is a good method to add porous materials (biomass charcoal, zeolite, etc.) Pore ​​blockage and adsorption saturation; in addition, there is still a certain competition between the absorption of pollutants by plants and the adsorption of pollutants by porous materials, so this treatment method cannot effectively solve the problem

Method used

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  • Water floating carbon and method for separating soil heavy metals by using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This water floating charcoal and the method for separating heavy metals from soil comprise the following steps:

[0025] The first step, the preparation of water floating charcoal:

[0026] A, raw material selection: firewood is cut into 2cm granularity, as the raw material for preparing water floating charcoal;

[0027] B. Carbonization: Dry or dry the selected biomass particles first until the water content drops to 30%, and then place the selected biomass particles in a mechanical kiln or an earthen kiln for oxygen separation firing at a firing temperature of 650 ℃, heating from room temperature to 650 ℃ during firing, and then watering the mechanical kiln or earth kiln to cool to room temperature to obtain water-floating biomass charcoal particles whose specific gravity is lighter than water and whose outer layer has been carbonized but the inner core has not been carbonized;

[0028] The second step is to separate soil heavy metals:

[0029] S1, blanking: the wat...

Embodiment 2

[0034] This water floating charcoal and the method for separating heavy metals from soil comprise the following steps:

[0035] The first step, the preparation of water floating charcoal:

[0036] A, raw material selection: wood leftover material is cut and sub-sieved out 1cm granularity, as the raw material for preparing water floating charcoal;

[0037] B. Carbonization: Dry or dry the selected biomass particles first until the water content drops to 20%, and then place the selected biomass particles in a mechanical kiln or an earthen kiln for oxygen separation firing at a firing temperature of 550 ℃, during firing, heat up from room temperature to 550 ℃ quickly, then water the mechanical kiln or earthen kiln to cool down to room temperature rapidly, and obtain water-floating biomass charcoal particles with a carbonized outer layer and an uncarbonized inner core that is lighter than water ;

[0038] The second step is to separate soil heavy metals:

[0039] S1, blanking: ...

Embodiment 3

[0044] This water floating charcoal and the method for separating heavy metals from soil comprise the following steps:

[0045] The first step, the preparation of water floating charcoal:

[0046] A, raw material selection: the stalk is cut into 3cm granular, as the raw material for preparing water floating charcoal;

[0047] B. Carbonization: Dry or dry the selected biomass particles until the water content is lower than 50%, and then place the selected biomass particles in a mechanical kiln or an earthen kiln for oxygen separation firing at a firing temperature of 450 ℃, heating from room temperature to 450 ℃ during firing, and then watering the mechanical kiln or earthen kiln to cool to room temperature to obtain water-floating biomass charcoal particles whose specific gravity is lighter than water and whose outer layer has been carbonized but the inner core has not been carbonized;

[0048] The second step is to separate soil heavy metals:

[0049] S1, blanking: the wate...

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Abstract

The invention discloses water floating carbon and a method for separating heavy metals from soil by using the same. The method comprises the steps of preparing the water floating carbon and separatingthe heavy metals from the soil. The method has the beneficial effects that the heavy metals can be separated from the polluted soil, and the purpose of thoroughly and radically treating the heavy metal pollution of the soil is achieved; the method is a physical treatment process, and is short in treatment period, low in cost, low in energy consumption, good in effect, simple to operate and free of any harm and side effect; and a large amount of agricultural wastes such as bamboo leftover materials, straws and fruit shells can be effectively utilized, the environmental pollution is reduced, the carbon dioxide emission is reduced, and the income of farmers is increased.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to water floating charcoal and a method for separating soil heavy metals. Background technique [0002] At present, human beings face three major pollutions: air pollution, water pollution and food pollution. Food pollution mainly comes from the migration of pollutants in the soil, followed by pollution caused by farming, food processing, storage and transportation. Among them, soil pollution has seriously threatened food safety production, healthy food supply and sustainable economic development. Therefore, it is particularly important to carry out soil treatment and ecological restoration to remove pollutants in the soil. [0003] Soil pollution includes inorganic pollution, organic pollution and biological pollution, such as heavy metal pollution, pesticide residues, and harmful organic pollution. Some of them come from nature, and some come from human product...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30B09C1/00C10L5/44
CPCB01J20/20B01J20/28011B01J20/3078B09C1/00C10L5/447B01J2220/4825B01J2220/4881Y02E50/10Y02E50/30
Inventor 涂志龙杨生茂汪玉瑛郑剑曾建新张正西王弄璋节海涛
Owner 遂昌高净界净化科技有限公司
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