Tương tác và loại bỏ chất gây ô nhiễm GIỚI THIỆU Xử lý ô nhiễm và phục hồi đất bị ô nhiễm đòi hỏi các quyết định quan trọng. Các yếu tố khác nhau, các vấn đề, và điều kiện cần được xem xét. Tuy nhiên, đây không phải luôn luôn dễ dàng để xác định hoặc mô tả. Các vấn đề khác nhau và các vấn đề cần xem xét tất cả đều bị ràng buộc vào những bộ mối quan tâm: | CHAPTER 7 Interactions and Pollutant Removal INTRODUCTION Remediation and rehabilitation of contaminated land require several critical decisions. Various factors problems and conditions need to be considered. However these are not always easy to define or characterize. The various issues and problems that need consideration are all tied into the following sets of concern Nature and distribution of the pollutants in the contaminated site Threat posed by the pollutants Land use requirements and intentions Zoning laws and regulations Economics of decontamination or pollutant removal Technology available and efficiency best available technology timing etc. and Risks. For the purpose of treatment of the subject of pollutant removal we will define decontamination to mean the removal of contaminants pollutants and non-pollut-ants with no particular reference to whether this means partial or complete removal of the contaminants. Where necessary the term complete decontamination will be used to indicate complete removal of contaminants. We have shown the overall nature of the problem previously in Figure . All the factors stated above and the specific points noted in Figure need to be considered. They do not however necessarily need to be considered in equal terms or proportions before reaching the decision point that a dictates or limits the type of level of land use attainable as the rehabilitation process or b specifies the land use and thus establishes the requirements and technologies for site decontamination. The basic points identified in Figure integrate the major items shown in Figure . These points refer to the requirements for a knowledge of the various bonding mechanisms and processes which bond the pollutants to the soil fractions. A knowledge of the nature of the bonding mechanisms established between the 2001 by CRC Press LLC I CONTAMINATED SITE I Site Specificities Pathways and exposure Land Use Mitigation Remediation Pollutant bond .
