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Based on ABAQUS modeling platform, simplified modeling of pipeline interface in different directions of water supply network in KGWL zone was conducted, where finite element analysis was as the basic modeling approach. Then dynamic analysis was taken when a known seismic/earthquake wave was input. Through analysis of simulation results, the basis of earthquake damage on pipe interface was determined...
Progresses in the study of speciation and biological uptake of arsenic in soil are introduced. The researches on bioavailability of arsenic are summarized, and the main factors which affect arsenic bioavailability are emphatically discussed. Relationship between speciation and availability of arsenic is concluded and the concerned problems and future development orientation are pointed out.
The adsorption of lead by soils is strongly influenced by temperature and various soil characteristics. Soil pH is one of the most important parameters influencing lead-solution and soil-surface chemistry since it affects lead speciation and the charge of soil surface groups. In general, lead adsorption is small at low pH values, and it increases with the increase in soil pH. Some investigations supported...
Fusion image of SAR (Radar-sat image) combined with visible spectrum remote sensing image (TM image) is used to extract soil and vegetation water content in arid oasis taking the delta oasis of Weigan and Kuqa rivers in Xinjiang as the study area. Based on the Normalized Difference Moisture Index extracted from homochromous visible spectrum remote sensing data, this thesis utilizes “water-cloud model”...
To discover the variation rule of phreatic evaporation with reeds growing in Liao River Estuary and enhance groundwater use efficiency, phreatic evaporation was tested in containers with groundwater supply and reeds growing. Evaporation from water surface and that on bare land under the same experimental conditions were set as contrasts. Under conditions of different groundwater depth, phreatic evaporation...
Mercury is a kind of material which is widely used, but has huge toxicity, its harm to environment has attracted people's attention widely. The article studies the possibility of using phyllosilicate to stabilize Hg in soil by discussing the existing form of Hg in soil, the absorption theory of phyllosilicate to Hg, and also the absorption experiment of phyllosilicate to Hg, The residues metal that...
Solidification/stabilization effect of FeSO4 and Ca(OH)2/CaO on chromium contaminated soil were studied by contrast, especially the effect of its reaction interval time and concentration. The change of S/S effect with time was also discussed. Results reveal that the reaction interval time effected on S/S slightly, with the high quality ratio of water to soil. As FeSO4 and Ca(OH)2 was used as the S/S...
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