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Liaohe River Basin tributaries the Nansha River and Haihe River Basin tributaries Liangshuihe research object, the body of water, suspended solids, heavy metals in the surface sediments distribution characteristics of the application to accumulate index and potential ecological risk method of heavy metal pollution in surface sediments assessment, through the adsorption experiments reveal Basin Heavy Metal Pollutants migration law, and the use of factor analysis method on the the Nansha River heavy metal pollution source apportionment, and provide a scientific basis the Nansha River and Liangshuihe, pollution control and governance of repair. The study results are as follows: (1) monitoring and analysis of the dry season, the level water period, Nansha river body wet period and dry season when the suspended solids and sediments in 16 kinds of heavy metal content and distribution law, the results show that the: Nansha rivers of heavy metals Cd, As, Cu, Se content were lower than the surface water environment quality standard GB3838-2002 \Province soil background value compared to the suspended solids, Cd, Zn significant cumulative phenomenon; cumulative phenomena in surface sediments of As, Se, Cd, Sb, Tl, Pb, Zn, Cu, Mn, Fe, Mg, Al. (2) monitoring and analysis the spillway period, spillway period Liangshuihe water, suspended solids in surface sediments of 16 kinds of heavy metal content and distribution, and the results showed that: in water As, Se levels were lower than the surface water quality standard I, Cu, Cd content were lower than the water quality standard II, most of the cross-section Zn content below III water quality standard, part of the cross-section of Pb content exceeds the water quality standard IV; compared to the background value of soil in Beijing, suspended solids As Liangshuihe spillway of , Se, Cd, Sb, Pb, Zn, Cu, Ba cumulative phenomenon is more obvious, non spillway period Cr, Ni, As, Se, Cd, Pb, Zn, Cu in the suspended solids have a significant cumulative phenomenon; surface deposition The object of As, Se, Cd, Sb, Cr, Pb, Zn of Cu, Ca, Fe, Mg, Ni, cumulative phenomenon. (3) Select high the Nansha River and Liangshuihe enrichment, a highly toxic heavy metals Pb, Cd, As, Cr, Cu, Zn, use accumulated index and potential ecological risk method of two rivers in surface sediments heavy metal pollution assessment. Index method to accumulate results show: the accumulation of heavy metals in the surface sediments of the two rivers were between 0-3 Index classification is no pollution to moderate pollution levels the Nansha River pollution levels of heavy metals: Zn gt; As gt; Pb gt; of Cu gt; Cr gt; the Cd, Liangshuihe Zn gt; of Cu gt; the of Cr gt; Pb gt; of As gt; Cd. Potential ecological risk method results showed that: the heavy metals the Nansha River and Liangshuihe, surface sediments were shown a mild to moderate ecological risk, Cd ecological risk. (4) use of factor analysis carried out on the the Nansha River body and surface sediment heavy metal pollutants source apportionment, analytical results show that, the the Nansha River heavy metal pollution sources can be roughly divided into three categories: metallurgy forging source, coal-fired source, ore mining sources. Nansha river water body pollution sources parse contribution rate: 58.609%, 15.375%, 9.854%, the surface sediments pollution sources obtained from analysis of the contribution rate: 36.691%, 22.037%, 36.255%. (5) respectively the Nansha River sediments Liangshuihe lead adsorption isotherm Langmuir model and Freundlich model, two river sediments lead ion adsorption increased with increasing temperature, sediment adsorption of lead ions decreased with the increase of ionic strength is increased, as the initial pH value increases.
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