�U�Fм�ޏ��k��Ⱦ��о�

��r�g��2009-08-07 16:41 ��Դ��h(hu��n)��Ⱦ�c�� : ��x��3599

ժҪ��о��ÏU�Fм�ޏ��k��,��cˮ�w�k��Ⱦ��ȥ��M��ˌ��ȣ�ԇ��Fм��kȥ��Ӱ�,��Y��40 min��ˮ�w�kȥ��_97��,��Fм��£��Ⱦ��ɽ��Q�B(t��i)�k�͚��B(t��i)�k��@��,��ͬ�r��A��k��Ⱦ,��ˮ��£��c�ɝB͸��ţ�PRB��g(li��n)��,��Ч��е��Ч�B(t��i)�k,��ͬ�r��ˮ�w��Ⱦ��о��Y��,��U�Fм��Ч��A��ޏ��k��Ⱦ,��ֵ��о��Н��ޏͼ��g��

�P�I�~��U�Fм �k��Ⱦ ��ޏ�

�k��һ�N��Н��Σ��Եĭh(hu��n)��Ⱦ��,�� ձ��“ʹʹ��”��L��ʳ�ú��k�ĵ��,��(j��)�y(t��ng)Ӌ�� ҇��s��1�fha��,��k��Ⱦ,�� ÿ��H��a�k�׾��_5�ft ��ϣ��Ⱦ��pʧ�ļZʳ�s1 200�ft,��Ӱ��҇��ļZʳ��a��ʳ�ﰲȫ,��k��Կɽ��Q�B(t��i)��[1]��ֲ��Ч,��,��Ҳ��k��Ⱦ��c�ޏ��ü��,��

Ŀǰ,�� ؽ��Ⱦ��;��ЃɷN��һ�N�ǌ��Ⱦ��ȥ��Ⱦ,��һ�N�Ǹ�׃�ؽ��еĴ��ΑB(t��i),��ʹ��̶��Ⱦ��Ļ��Խ��,��p��е��w��Ժ��,��(w��n)��@�@�ɷN;��a��˲�ͬ��ʩ�ͷ��,��,��ϴ��ޏͷ�,��׿��x�ӷ�,��ֲ��ޏͷ��[2,��3],��

��r�F(�U�Fм)��ɝB͸��(permeable reactive barrier��PRB)��g�Ļ��|,��ȥ��ˮ�е��t,��ϩ��TCE��Ⱦ [3-6]��҇�Ҳ��r�Fȥ��ӡȾ,��Ƹ��ИI(y��)�Uˮ�đ��,��Ј��F��Ч�ޏ��Ⱦ��[7]��r�F��U�Fм��ޏ��ؽ��Ⱦ��о��^��,��P�k��ޏ��δҊ��,��U�Fмȡ�Թ��S�U��,��ԭ�ϱ��׵ã�ʹ��PRB��gȥ��^�̞�ԭλ�ޏ�,��ʡȥ�ܶ๤��,��ޏ��ڶ̣��кܴ�đ��Ý��[8],��P�ߌ��U�Fм�ޏ��k��Ⱦ��һЩ��A��о�,��PRB��g��ƏV��ṩ��g��(j��)��

����D�d��ǳ��ڂ��f��Ϣ֮Ŀ��,��Ё�Դ��ע�e�`��ַ��ĺϷ��,��Ո��߳֙��C��c��W(w��ng)(li��n)ϵ��҂��r��,��h��,��x�x��