Macromolecular heavy metal chelating agent for stabilization of dangerous waste materials and method for preparing same |
Title： |
| Macromolecular heavy metal chelating agent for stabilization of dangerous waste materials and method for preparing same |
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Application Number： |
200410090662 |
Application Date： |
2004/11/12 |
Announcement Date： |
2005/06/29 |
Pub. Date： |
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Publication Number： |
1631940 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
C08G 73/04, A62D 5/00, C02F 1/68, B09B 3/00 |
Applicant(s)： |
Tsinghua University |
Inventor(s)： |
Wang Wei, Jiang Jianguo, Wan Xiao |
Key Words： |
Macromolecular, heavy metal chelating agent,stabilization,dangerous waste materials,preparing method |
Abstract： |
The invention belongs to dangerous waste processing field, relates to high molecular heavy metal sequestrant for stabilized processing waste liquid, waste residue heavy metals mud, burning ash, and other dangerous waste containing heavy metal and its preparing method. The high molecular heavy metal sequestrant has its basic skeleton formed by polyamine or polyethyleneimine, which then react with SO2 in alkaline condition to synthesize the liquid or crystal. The invention can control the temperature and period by adjusting ratio of material, acquiring a series of products with similar performances. The invention has simple technique easy operation and can be used for production in bundle; its product can be used for stabilizing heavy metal in liquid and solid waste, has bright future. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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