Analysis and Prospect of Foreign Soil Remediation Patent Technology

Pollution will not only destroy the quality and the productivity of the soil, but also threatening the water, atmospheric environment, and ecological safety. Domestic soil pollution control started relatively late, exploring the application of foreign soil pollution remediation technologies is of great significance to improving soil quality in China. In this study, the advanced technologies of soil remediation were investigated based on the regional characteristics, pollution types, and soil remediation status. The current status and technical characteristics of soil remediation at home and abroad were summarized from the aspects of biological remediation, physical remediation, chemical remediation, and composite remediation. The typical technologies of foreign soil remediation were deeply analyzed. The feasibility and application prospects of these technologies in China were also evaluated. Compared with the separate chemical or physical remediation, composite remediation with advantages of high efficiency, economy, and flexibility. Therefore, it can be concluded that the composite remediation may become the main method of soil remediation and environmental remediation in the future. Furthermore, the development direction for soil remediation was forecasted, aiming to provide some reference for exploration of soil remediation technology in China.