Contaminated Land and Bioremediation Ô nhiễm đất là một ví dụ của một vấn đề môi trường được đánh giá cao rộng rãi, nhưng thường được hiểu rõ, trong cách tương tự như đã thảo luận về ô nhiễm trong chương cuối cùng. Rằng điều này cần được trường hợp, tất nhiên là không ngạc nhiên, kể từ khi hai điều này liên quan mật thiết, một là, trong bản chất, chỉ đơn giản là biểu hiện của người khác. Tầm quan trọng của đất khắc phục hậu quả trong việc làm sạch những ảnh hưởng còn lại của hoạt. | 5 Contaminated Land and Bioremediation Contaminated land is another example of a widely appreciated yet often poorly understood environmental problem in much the same way as discussed for pollution in the last chapter. That this should be the case is of course unsurprising since the two things are intimately linked the one being in essence simply the manifestation of the other. The importance of land remediation in cleaning up the residual effects of previous human activities on a site lies in two spheres. Firstly throughout the world environmental legislation is becoming increasingly stringent and the tightening up of the entire regulatory framework has led to both a real drive for compliance and a much greater awareness of liability issues within industry. Secondly as the pressure grows to redevelop old unused or derelict so-called brown-field sites rather than develop previously untouched green-field the need to remove any legacy of previous occupation is clear. A number of technologies are available to achieve such a clean-up of which bioremediation in its many individual forms is only one. Though it will of course provide the main focus of this discussion it is important to realise that the arguments presented elsewhere in this book regarding the high degree of specificity which governs technology selection within biotechnological applications also applies between alternative solutions. In this way for some instances of contamination expressly nonbiological methods of remediation may be indicated as the best practicable environmental option BPEO . It is impossible to disassociate contextual factors from wider issues entirely. Accordingly and to establish the relevancy of the wider setting alternative remediation techniques will be referred to a little later in this chapter. The idea of contaminated land is something which is readily understood yet like pollution somewhat more difficult to define absolutely. Implicit is the presence of substances which when .
