修复土地再用生态风险评价方法研究

针对污染土壤的修复技术研究已经取得了很多重要的结果,但是对修复效果的评价研究却相对较少。实际上,在对污染土壤进行物理、化学以及生物修复后,再用前需要根据再用目的对可能残留的污染物或修复剂是否会产生生态安全和人类健康问题进行风险评价。本文着重从修复场地原位观察法、实验室模拟观察法、微宇宙法和现场经验与推导法四方面讨论了如何能够有效、灵敏地诊断污染物对生态系统产生的潜在危害,归纳了生态毒理学实验在评价修复土地再用风险中的作用;并对修复土地再用生态风险评价的发展前景进行了展望,提出了针对性的建议。

Ecological risk evaluating for the reuse of the remediated soils

Many investigations about phytoremediation technologies had been done and some important achievements had been acquired, however, the investigation about the remediation efficiency was less. In fact, after the soils are remediated by physical, chemical and biological methods, the effective methods should be applied to assess the ecology safety and human health problems brought by the rudimental polllutants before the soils are reused. The study discussed how to effectively and sensitively diagnose the harm caused by the pollutants from the toxicology experiment of spot observation, lab simulated observation, microcosm, spot experience and derivation, conclude the function of ecotoxicological experiments on evaluating the risks. Furthermore, future research directions were also discussed and pertinent suggestions were given..