The "New Technology of Indigenous Microorganism Treatment for Cadmium-Containing Sediment" completed by the Academy of Environmental Sciences of Hunan Province successfully passed the scientific and technological achievement identification on August 9, 2010. This technology will achieve harmless and resourceful treatment of sludge, and has broad application prospects in the treatment of heavy metals.
On August 9, the Hunan Provincial Department of Environmental Protection hosted a scientific and technological achievement appraisal meeting on "New Technology of Indigenous Microorganism Treatment for Cadmium-Containing Sediment" in Changsha. At the meeting, the research team of the Hunan Academy of Environmental Sciences first reported on the research and development of the project. The expert group carefully reviewed the appraisal materials, and after inquiries and serious discussions, they agreed that the technology developed by the project is obviously innovative, and the technological achievements are leading in the domestic similar research.
This study found that a new type of indigenous microorganism (Bacillussp.) Can efficiently leaching cadmium and other heavy metals in the cadmium-containing sediment. Under the optimal process parameters, the leaching rate of cadmium and other heavy metals is more than 80%, and the residue after leaching The leaching concentration of each heavy metal in China is lower than the standard value in "Hazardous Waste Identification Standard" (GB5085.3-2007), which can be used as general solid waste disposal, which achieves the harmlessness and resource utilization of sediment treatment, and has a wide range of heavy metal treatment. Application prospects.
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