dc.description.abstract | Abstract
The purpose of this research mainly lies on the continuous events of soil pollutions; because of the immaturity of processing techniques, we have to rely on the imported advanced ones to improve the internal pollutions.
From the relevant references, we have involved in studying the behaviors of the organic pollutions in soil such as absorption, desorption. In order to get further understanding of the data like the characteristics of the pollution of the specific locale, we not only analyze the background of the specific locale, for example, the ingredients, the processing, the products and so on, but also take sampling to promote effective assessments of the kinds and types of the pollution.
There are numerous American soil improvement techniques such as Soil Vapor Extraction method、Soil Flushing method、Chemical Oxidize method、Bioremediation method、Heater Reactions method, and we have screened the range, limitation and strength and weakness of all methods and through examining the key factors of the thermal-desorption equipments(soil processing temperature, processing time, types of heating and so on), the natures of soil(vaporization pressure, concentrations of pollution species and so on) and the characteristic of soil(sizes of particle, water content, the humic content and so on), we do study about the removal processing efficiency of polluted soil; we believe it is very helpful for passing the experience down.
By the investigation of the expense for thermal-desorption processing like the cost of water, electricity, fuel and the like, by the analysis of economic profit among polluted soil processing cases as well as by comparison with the related reports of the United States, we can look forward to the plausibility of internal thermal-desorption and at the same time, we also expect that it would provide analogic experience to build up the more economic and efficient methods for soil renovation. | en_US |