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easy operation and a wide range of advantages,tom ford shoes, more suitable for the repair of heavy metal pollution of farmland, with better environmental, economic and social benefits,http://bbs.520baby.wang/forum.php?mod=viewthread&tid=241404,abercrombie soldes, and significant progress has been made. "Shi-Bao said.70s over Japan Toyama soil remediation century,http://kujiraduki.fakefur.jp/p-nikki/apeboard_plus.cgi/apeboardp_mt.cgi/, for example, a total of 863 hectares (12,945 acres) of farmland, invested $ 340 million in total, spent 33 years time off homemade repairs are completed, the average repair cost per acre of nearly 180,000 yuan.It is worth noting that Japan limits for cadmium rice is 0.4mg / kg,air max pas cher pour homme, while the limit value of cadmium rice only 0.2mg / kg, health risk control is to be strict in other developed countries. Strict limits cadmium in rice,giuseppe zanotti homme, which means that the soil quality standard cadmium correspondingly stringent.Shi-bao said Japan cadmium contaminated soil remediation cases, if the rice cadmium in accordance with our standards, then the repair cost and time will be greater,http://mxfc889.com/bbs/forum.php?mod=viewthread&tid=193418,scarpe hogan outlet, repair measures are more difficult.From the Chinese point of view of actual operation, contaminated site remediation funding sources can be divided into four categories: Lot's original owner.
were not representative of the nature of human pollution geochemical background; surface samples from shallow surface 25 cm,http://yzwzqc.no8.cuttle.com.cn/forum.php?mod=viewthread&tid=1095676&extra=, is a natural geological background superimposed pollution and human activities. Deep content by subtracting the surface content of heavy metals that come "Human pollution map."To repair a hundred yearsMore bad news is that after the soil is contaminated we can not expect it to be like air and water self-repair."In theory,hogan scarpe outlet,http://zx.jc10000.com/thread-2053778-1-1.html, heavy metal contaminated soils can be repaired, but it is difficult to fully restore its ecological functions." Shi-Bao told reporters that at present the world of heavy metal contaminated soils for restoration measures proposed.
there are many, including the two contaminated soil remediation Principle: containment (in-aiturem ediation) and removal (rem ove, ex-situ). Based on these two principles, remediation of contaminated soils are mainly isolated embedded,nike tn, curing stability,doudoune parajumpers, the rule of separation of thermal and chemical stability, electrical repair, new soil and tilling the soil, leaching and soil bioremediation (including phytoremediation), but each measures there are some limitations apply."Once heavy metals into the soil, and then be very difficult to repair, it takes a lot of time and money. For pollution characteristics of contaminated farmland (low level,nike tn 2014, a large area, the need to secure sustainable use,http://ezsjingji.com/forum.php?mod=viewthread&tid=316073,nike tn, etc.), in situ chemical passivation (to reduce heavy metals soil - plant system migration into the core) technology because of its cost-effective,air max 1 pas cher, fast repair time.
mercury and other heavy metals and human pollution. Significant enrichment of heavy metals in the soil surface and densely populated areas, there is a close correlation between mining and industrial areas. And about 1994 samples compared to the distribution area of heavy metal contamination in soil significantly expanded to the densely populated eastern proliferation.Fortunately, there is good news recently: Land and Resources,air max pas cher enfant, China Geological Survey Bureau,http://www.webcq.org/news/html/?74697.html, said the status quo will be fully consultation soil heavy metal pollution, soil heavy metals being drawn "map of human pollution."It is reported that China is building covers 81 chemical indicators (including 78 kinds of elements) geochemical reference network: 200 000 map sheets to the reference grid cells, each grid is laid sampling points, each point each Acquisition of a deep soil samples and soil samples a surface. Samples from 1 meter deep.
""Human pollution map"No exact data, the experts can only roughly with debris splicing patterns, they unanimously approved that the South than the North serious heavy metal pollution is the number one killer of soil,chaussure femme pas cher, the more severe the higher the degree of heavy metal pollution in industrialized areas. From our west (Plain) to Central (Jianghan Plain), to the south (PRD) region, heavy metal pollution was gradually strengthening trend, showing the distribution area increases,hogan outlet, content increased strength, increased range of elements.From the current point of view, regional geochemical survey projects nationwide multi-target has also been found in some areas of soil pollution is serious. For example,magasin hollister,http://qijiworld.com/bbs/forum.php?mod=viewthread&tid=671430&fromuid=17966, the prevalence of certain areas of the Yangtze River cadmium, mercury,air jordan 4 retro rouge noir, lead,gioielli tiffany, arsenic and other abnormalities. The city and its surrounding widespread mercury and lead anomalies, and the presence of radioactive anomalies evident in some cities. Lakes harmful elements enriched soil acidification serious.Research confirms that there is a close relationship between cadmium.