典型焦化污染场地多技术联用治理工程应用案例分析

丁浩然; 王镝翔; 陈成; 杨乐巍; 吴腾; 王恒; 徐宏伟; 杨学志; 刘鹏

doi:10.12153/j.issn.1674-991X.20230144

典型焦化污染场地多技术联用治理工程应用案例分析

doi: 10.12153/j.issn.1674-991X.20230144

丁浩然^1,,
王镝翔¹,
陈成¹,
杨乐巍^{1, 2, ,},
吴腾¹,
王恒³,
徐宏伟¹,
杨学志³,
刘鹏^{1, 2}

1.
北京建工环境修复股份有限公司
2.
污染场地安全修复技术国家工程实验室
3.
合肥东部新中心建设管理办公室

基金项目: 国家重点研发计划项目（2020YFC1807905）

详细信息

作者简介:
丁浩然(1989—)，男，工程师，硕士，研究方向为土壤与地下水修复，dinghaoran@bceer.com

通讯作者:
杨乐巍(1972—)，男，正高级工程师，博士，研究方向为土壤与地下水修复，yangyuewei@bceer.com

中图分类号: X524
计量
- 文章访问数: 258
- HTML全文浏览量: 87
- PDF下载量: 61
- 被引次数: 0
出版历程
- 收稿日期: 2023-02-24
- 录用日期: 2023-07-31
- 修回日期: 2023-07-26

Analysis of application cases of multi-technology combined treatment for typical coking contaminated site

1.
Beijing Construction Engineering Group Environmental Remediation Co., Ltd.
2.
National Engineering Laboratory for Site Remediation Technologies
3.
Hefei East New Center Construction Management Office

摘要

摘要:
典型焦化污染场地具有明显的多环芳烃和重金属复合污染特征，单一修复技术往往难以完成治理。多技术联用修复焦化污染场地土壤已开展了应用实践，但联用技术适用的场地污染特征和工程技术问题还鲜有报道。焦化场地多环芳烃和重金属主要分布在浅层土壤中，复合污染普遍，但2类污染物互相作用影响小，适合采用以土壤淋洗为核心的联用修复技术，其具有节省修复周期和成本的工程应用优势，二次污染防治是其技术难点，未来可发展土壤淋洗+化学氧化+生物修复联用技术，进行绿色修复。
- 热脱附 /
- 化学氧化 /
- 土壤淋洗 /
- 生物修复 /
- 复合污染 /
- 联用技术
Abstract:
Typical coking-contaminated sites have obvious composite pollution characteristics of polycyclic aromatic hydrocarbons (PAHs) and heavy metals, and single remediation technology is often difficult to complete the treatment. The application practice of multi-technology combined remediation has been carried out, but the site pollution characteristics and engineering technical problems applicable to the combined application technology are rarely reported. PAHs and heavy metals in the coking-contaminated sites are primarily distributed within the shallow soil, indicating compound pollution. However, there is minimal interaction between these two kinds of pollutants. Therefore, a combined remediation technology with soil leaching as its core is suitable for application due to its advantages of saving restoration cycle and cost. The main technical challenge lies in preventing and controlling secondary pollution. In the future, a synergistic approach combining soil leaching, chemical oxidation, and bioremediation technologies can be developed for environmentally-friendly restoration.
- thermal desorption /
- chemical oxidation /
- soil washing /
- bioremediation /
- compound pollution /
- combined technology

HTML全文

图 1 污染物平面分布

Figure 1. Plane distribution of pollutants

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图 2 前期调查污染分层分布情况

Figure 2. Stratified distribution of pollution investigated in the early stage

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图 3 补充调查重金属和多环芳烃污染分布特征

注：虚线表示 GB 36600—2018第一类用地筛选值和深度。

Figure 3. Supplementary investigation on the distribution characteristics of heavy metals and polycyclic aromatic hydrocarbons

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图 4 多环芳烃检出深度频数

注：每项首个图形为初步调查结果，第二个为补充调查结果；圆圈为中值，横线为均值。

Figure 4. Frequency analysis of PAHs detection depth

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图 5 复合污染相关性分析

注：*表示P≤0.05下相关性显著；图中数字表示其对应横纵坐标2项间的相关系数；圆圈大小和颜色对应相关性的强弱。

Figure 5. Correlation analysis of composite pollution

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图 6 联用修复技术路线

Figure 6. Combined repair technical route

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表 1 安徽某退役钢铁厂焦化污染场地地层地质及水文地质情况

Table 1. Geological and hydrogeological condition of the coking polluted site of a retired iron and steel plant in Anhui

地层	埋深层厚/m	地层全场区分布情况	地下水分布
杂填土（Q₄^ml）	1.20~6.50	普遍分布	上层滞水
黏土（Q₄^al+pl）	2.70~21.50	普遍分布	—
粉质黏土夹粉土（Q₄^al+pl）	1.50~13.20	局部分布	—
粉砂（Q₃^al+pl）	4.20~10.30	局部分布	承压水
强风化泥岩（E2t）	3.00~5.80	局部分布	承压水
中风化泥岩（E2t）	2.80~3.70	普遍分布	承压水

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表 2 实例场地修复技术成本分析

Table 2. Cost analysis of site restoration technologies for the case study site

修复技术	单价/（元/m³）	总价/万元	单台设备处置周期/d	评价
异位热脱附^[11]	900~1 500（以 1 000计，含拆装）	5 600	130	成本高，周期长，无法处理重金属污染
异位化学氧化^[13]	500~1500（以700计，含拆装）	3 920	200	成本适中，周期长，无法处理重金属污染
土壤淋洗^[12]	500~1000（以500计，含拆装）	2 800	130	成本低，周期长，无法彻底去除污染物
水泥窑协同处置^[13]	800~1 000 （以900计）	5 040	68	成本高，周期短
联用修复技术	800（不含拆装）	4 480	70	成本适中，周期短

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