Zhou Qixing, Sun Fuhong, Liu Rui
Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Environ Int. 2005 Aug;31(6):835-9. doi: 10.1016/j.envint.2005.05.039.
How to increase the efficiency of chemical flushing and decrease the remediation expenses of contaminated soils are two key scientific and technological issues to be solved. Joint chemical flushing was tested and compared with the water-flushing. The joint acid-flushing could effectively remove petroleum hydrocarbons in contaminated aquorizem and the dosage of washing powder as a flushing agent was greatly reduced, thereby, saving approximately 1200 US dollars of expenses relative to the water-flushing. The joint salt-flushing could be an optimal method for the cleanup of meadow burozem contaminated with petroleum hydrocarbons under the experimental conditions. Moreover, the amount of surfactant remained in the two washed soils after the joint acid-flushing and the joint-salt-flushing was minimal.
如何提高化学冲洗效率以及降低污染土壤的修复成本是两个亟待解决的关键科技问题。对联合化学冲洗与水冲洗进行了试验和比较。联合酸冲洗能有效去除污染含水层中的石油烃，且作为冲洗剂的洗衣粉用量大幅减少，从而相对于水冲洗节省了约1200美元的费用。在实验条件下，联合盐冲洗可能是清理受石油烃污染的草甸棕壤的最佳方法。此外，联合酸冲洗和联合盐冲洗后，两种冲洗土壤中残留的表面活性剂含量极少。
