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In this study, use of Donggang Stream - Gangxi Geir sediment analysis, and restoration through sediment test results are the most appropriate sediment improvement initiatives to improve the river water pollution a serious problem. In recent years due to industrial and commercial economic and demographic boom accelerated, resulting in the catchment area of domestic sewage, industrial waste and livestock waste pollution load has increased, donggang Stream serious water pollution also affected the water quality therefore, the effectiveness of this study is hoped, through the most suitable method to improve the river water. In this study, river sediment for VOC, SVOC, and TPH, sediment characteristics of test site and analysis of relevant Restoration (of the project measured with sediment thickness, sediment observations - odor, color and flora, river sediment Analysis of sediment containing heavy metals and sediment characteristics of analysis, etc.). To understand the different depths under the Restoration, the design of three different cell blocks 20,40 and 60 cm depth (hereinafter referred to as A treatment, B treatment and C treatment) for analysis. During the test the most representative indicator of total plate count and N categories of change, the process of reducing the number of bacteria changes the degree to A treatment, followed by B treatment, change to reduce the minimum for the C treatment, combined with the increase of bacteria and nitrate-phase state Nitrogen increase (concentration of A treatment, followed by B treatment, C treatment for at least), The results indicated that the effectiveness of the restoration bacterial phase increases with the total plate counts were reduced to Biodegradation; restoration in the late number of the total number of bacteria are reduced to the late representative of the diverse flora of the lower pollution levels, and ultimately the total nitrogen Reduced and nitrate nitrogen the growth and SOD decreased represents the transformation mechanism is carried to a certain extent. If the test measured by heavy metals in sediments does not exceed the value of regulations and standards and Nitrogen-rich and sediments remediation to achieve results in the same time, can be excavated Sediment for people to re-use the soil for planting.
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