重金属土壤清洗技术研究进展

重金属在土壤中具有极长的潜伏期,较高的生物毒性,长期影响土壤环境质量与人类生存环境,且拥有在食物链中逐级累积的特点,已逐渐引起人们的广泛关注。土壤化学淋洗技术由于对重金属淋洗效率高,修复彻底而被广泛应用于目前土壤重金属修复的各个领域。我国对这类技术研究起步时间相对较晚,对土壤重金属修复原理以及淋洗剂研究并不深入。对不同种类化学淋洗剂的淋洗效果,优劣势进行综合分析,以期为土壤重金属污染防治提供参考。

Research Progress of Heavy Metal Bearing Soil Cleaning Technology

Heavy metals in soil have a very long incubation period, high biological toxicity, long-term impact on soil environmental quality and human living environment, and gradually attract widespread attention due to their characteristics of gradual accumulation in the food chain. Soil chemical elution technology is widely used in various fields of soil heavy metal remediation due to its high leaching efficiency and complete remediation. The research on this kind of technology starts relatively late in China, and research on principle of soil heavy metal remediation and leaching agent is not in-depth. Therefore, this paper makes a comprehensive analysis of leaching effects, advantages and disadvantages of different kinds of chemical leaching agents, aiming to provide a reference for prevention and control of soil heavy metal pollution.