Soil pollution has become a worldwide problem, a large number of relevant data show that the overall situation of China's soil pollution is also quite serious conclusions. Soil pollution on China's social and economic development, ecological environment caused great pressure. Here we analyze the soil remediation process:
Method / procedure
1.repair technology how to classify:
Soil remediation technology in accordance with the repair principle can be divided into "physical remediation, chemical remediation, bioremediation of three (which is the mainstream of academic classification, but also some scholars believe that in order to change soil based on earthwork construction to complete the repair should be out for" repair "). - note that this classification is more likely to focus on the implementation of the restoration, rather than focusing on the principle of repair, that is, in situ repair and ectopic repair". The former refers to the direct implementation of pollution remediation of contaminated soil, and is required to dig soil bioremediation (in many cases will be dug up after the implementation of soil remediation, in the vicinity of the site this is ectopic repair). Obviously, it is necessary to deal with the soil after the treatment of ectopic repair.
2.treatment and disposal:
In environmental engineering, the concept of "treatment" and "disposal" is very important, in Chinese, the distinction between these two concepts seem to be not so easy to distinguish, and in English, they are two completely different words:'Treatment'and'disposal'. The difference between them is that they deal with the process of reducing or eliminating the pollution of the target by various means. The treatment is the last part of the repair: for all pollutants and intermediates (including the process of waste water, waste gas, waste residue, etc.) to find the ultimate destination.
Most of the current methods of repair are separate processing and disposal. Such as chemical leaching method, this method will produce waste water, repair the soil at the same time, to collect the waste properly disposal (such as special waste treatment equipment etc.). But there are some repair methods is the treatment and disposal of the process will be completed together, such as part of phytoremediation and microbial remediation methods, because the repair process no other pollutants, and soil pollution can be stable and harmless, so as to be completed at the same time a good disposition.