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Started 10 years ago by 6fq2wo29m3

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 but this method is still in the experimental stage. The method is now widely recognized plant extraction method, by planting some high enrichment of plants,nike air force, extracted soil mercury. However,tn air max 2014 pas cher, the subsequent processing of these mercury-containing plants is also a problem. These methods have their advantages and disadvantages, but if handled large area of mercury contaminated soil, there is not a good way,woolrich outlet, because that is the high cost. Experts in the field of soil remediation, chief director of the Institute of Geography Center for Environmental Remediation 863 Chen Bin: Some contamination is widespread, whether it is thermal desorption or elution method,giuseppe zanotti paris, or some other physical and chemical methods.

 and also requires a series of supporting policies, systems need to follow up. Chen Bin: You have to find the appropriate venue for this repair work jobs, then there earthwork transport, including storage, etc.,air jordan milano, will bring a lot of problems,moncler outlet online, so I do not say, is entirely a question of money, After large projects,nike free run italia, we will be difficult to resolve. So for soil remediation and restoration, in the end there is no viable solutions? Agricultural Economics Research Institute of Renmin University of China has been the topic of this research. They suggested that the developed countries, the control of soil pollution first.

 usually it will cost Very high or very high energy consumption,hogan online, so there is risk of secondary pollution, so such a large amount of contaminated soil remediation, its cost is extremely expensive. Chen Bin said, speaking from the world, soil remediation are difficult questions, the United States in the 1990s to invest in soil remediation of contaminated areas about billions of dollars; Japan survey showed that there are 320,scarpe hogan outlet,000 contaminated with heavy metals or volatile organic compounds soil and groundwater, the entire restoration about $ 160 billion; the reality from our point of view, in addition to the extraction plant, the cost per acre of land restoration easily up to hundreds of million in the value of the soil itself is not yet high enough, not realistic. Plant extraction cost is relatively high, but the repair cycle for decades or even centuries.

 clear legislation.

 then repair and what challenges it faces? Contamination of arable land restoration,nike tn, how should I start? Soil remediation of mercury contamination is facing a dilemma On December 30,nike free run outlet, 2013 press conference, the Ministry official said that arable land in the country suffered heavily polluted 5,000 hectares of arable land which the state is tissue repair. But when reporters interview that soil contamination with other contaminants are significantly different, some of the heavy pollution or mineral mining and processing plant to stop operations, the surrounding industrial emissions of sewage and waste on will stop, but the soil contamination but it is ongoing, and remains in the soil through rain,parajumpers homme, wind,piumini moncler, the soil will become again runoff pollutants or dust, to other places, the formation of secondary pollution. From the international point of view method to mercury contamination,nike air force prezzo, the soil remediation some using thermal desorption method, by heating or hot steam way,woolrich parka, the soil inside the mercury evaporated recycling, but it will destroy soil microorganisms . Leaching method can also be used,hogan outlet, that is, the mercury inside the leaching out of the soil, but this will lead pollutants into water bodies, and water treatment has become a vexing problem. The third way is a curing method,nike air jordan, that is,air max, through the agent, the mercury in the soil which is fixed, so that it does not precipitate does not react.
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