高分子重金属絮凝剂对 Hg2+的捕集及性能

以含Hg^2 废水作为处理对象，研究了几个影响高分子重金属絮凝剂去除水中Hg^2 的因素，实验表明：(1)pH值对Hg^2 的去除率影响不大；(2)水中某些二价离子的存在不仅不会消耗高分子重金属絮凝剂的用量，而且会促进螯合体MHM-Hg^2 絮凝沉淀，Hg^2 的去除率在99％以上，而一价金属离子对处理效果影响不大；(3)Hg^2 和致浊物质会互相促进彼此的去除，浊度的去除率在98％以上，Hg^2 的去除率在99％以上；(4)高分子重金属絮凝剂对重金属离子具有选择性，可将部分重金属离子从其它离子中分离开、回收再利用．

THE CHARACTERISTIC OF MACROMOLECULE HEAVY METAL FLOCCULANT AND TRAPPING OF MERCURY ION

ln this paper,wastewater which contains mercury ion as the treating object,some factors which affect the removal of mercury ion in wastewater with macromolecule heavy metal flocculant (MHMF)were studied,thus further understanding of the structure and characteristic of MHMF was done.The test showed that:(1) pH has little effect on removal rate of mercury ion;(2)The existence of some bivalent ions in wastewater did not only consume none of macromolecule heavy metal flocculant,but also promote the flocculation and sedimentation of mercury,the removal rate of mercury ion was above 99%,but monovalent metal ions had little effect on the treating;(3)mercury ion and substance causing turbidity would promote the removal of each other,the removal rate of turbidity was above 98% and the removal rate of mercury ion was above 99%,(4)MHMF had selectivity on heavy metal ions and coud separate part of the heavy metal ions which would be reclaimed and reused from others.