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Treatment method of organic contaminated soil, purified modified soil and fluidized solidified soil
The invention relates to the technical field of solid waste recycling, and particularly discloses a treatment method of organic contaminated soil, purified modified soil and flow-state solidified soil. The treatment method of the organic contaminated soil comprises the following steps: adding a sulfite solution into the organic contaminated soil, and carrying out sulfonation reaction to obtain modified soil; the modified soil is subjected to thermal desorption treatment, and purified modified soil is obtained; in the thermal desorption treatment, the thermal desorption temperature ranges from 780 DEG C to 1000 DEG C, and the thermal desorption time ranges from 30 min to 70 min; the organic contaminated soil contains lignin, and the lignin accounts for at least 0.3% of the weight of the organic contaminated soil. According to the method, resource utilization of the organic contaminated soil can be achieved, and a dispersing agent does not need to be additionally added in the process of preparing the flow-state solidified soil from the purified modified soil.
本申请涉及固体废弃物资源化的技术领域，具体公开了一种有机污染土壤的处理方法、净化后的改性土壤及流态固化土。该有机污染土壤的处理方法如下：向有机污染土壤中加入亚硫酸盐溶液，发生磺化反应，获得改性土壤；将改性土壤进行热脱附处理，获得净化后的改性土壤；所述热脱附处理中，热脱附温度为780‑1000℃，热脱附的时间是30‑70min；所述有机污染土壤中包含木质素，所述木质素占所述有机污染土壤的重量百分比至少为0.3%。本申请能够实现有机污染土壤的资源化利用，且利用净化后的改性土壤制备流态固化土的过程中不需要再外加分散剂。
Treatment method of organic contaminated soil, purified modified soil and fluidized solidified soil
The invention relates to the technical field of solid waste recycling, and particularly discloses a treatment method of organic contaminated soil, purified modified soil and flow-state solidified soil. The treatment method of the organic contaminated soil comprises the following steps: adding a sulfite solution into the organic contaminated soil, and carrying out sulfonation reaction to obtain modified soil; the modified soil is subjected to thermal desorption treatment, and purified modified soil is obtained; in the thermal desorption treatment, the thermal desorption temperature ranges from 780 DEG C to 1000 DEG C, and the thermal desorption time ranges from 30 min to 70 min; the organic contaminated soil contains lignin, and the lignin accounts for at least 0.3% of the weight of the organic contaminated soil. According to the method, resource utilization of the organic contaminated soil can be achieved, and a dispersing agent does not need to be additionally added in the process of preparing the flow-state solidified soil from the purified modified soil.
本申请涉及固体废弃物资源化的技术领域，具体公开了一种有机污染土壤的处理方法、净化后的改性土壤及流态固化土。该有机污染土壤的处理方法如下：向有机污染土壤中加入亚硫酸盐溶液，发生磺化反应，获得改性土壤；将改性土壤进行热脱附处理，获得净化后的改性土壤；所述热脱附处理中，热脱附温度为780‑1000℃，热脱附的时间是30‑70min；所述有机污染土壤中包含木质素，所述木质素占所述有机污染土壤的重量百分比至少为0.3%。本申请能够实现有机污染土壤的资源化利用，且利用净化后的改性土壤制备流态固化土的过程中不需要再外加分散剂。
Treatment method of organic contaminated soil, purified modified soil and fluidized solidified soil
一种有机污染土壤的处理方法、净化后的改性土壤和流态固化土
LI CHUNMEI (author) / ZHAO LEI (author) / QIU JIANQING (author) / MENG LIBIN (author) / LI XIANGDONG (author) / CUI XING (author) / HUO JING (author) / WANG CHENGYUAN (author) / TAN SHENGYING (author) / LIU XUEDONG (author)
2023-01-17
Patent
Electronic Resource
Chinese
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