Research on countermeasures for closed water areas
In lakes that suffer from advanced forms of contamination such as eutrophication, a major cause of the contamination is often the elution of nitrogen and phosphorus from the large amounts of mud that build up at the bottom of the lake. We have conducted countermeasures, including dredging, in an attempt to reduce the amounts of bottom mud, but it is now important for us to develop new technologies to grasp the mechanisms that govern elution, along with ensuring the safety of such new chemical substances as endocrine disruptors (or environmental hormones) and preserving the biodiversity of lakes and other closed water areas. This project is conducting research for the standardization of evaluation techniques for bottom mud, countermeasure projects that take into full account the ecosystems that thrive at the bottom of lakes, stability and safety evaluation measures for bottom mud, and measures to combat the influx of sedimentary deposits from rivers. |
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