��t��Uˮ��l(f��)��ľC�϶��

��r�g��2011-02-25 15:14 ��Դ��W�� : �� ױ�� x��7715

��

��ǙCе��I(y��)�е�һ헻��A��ˇ,Ҳ�Ǯ� ��ȫ��Ⱦ��I(y��)֮һ[1],��(j��)�y(t��ng)Ӌȫ��I(y��)�ͳ� ��ˮ�ŷſ��401�|��,�像S�ŷ� �Uˮ�_40�|��,ռ��I(y��)�Uˮ�ŷ��10%, ��Ҽs��50%��像Uˮδ�_��ŷŘ˜ʶ� ��ŷŵ��˭h(hu��n)��[2-3]��Uˮ��ؽ��x��,�� C��Ｐ�o�C��к��|(zh��),�@Щ��|(zh��)�� B(t��i)�h(hu��n)��a(ch��n)��ص�Σ��[4],��Ŀǰ��像Uˮ�ŷ� �ıO(ji��n)��͹��Ҫ��(j��)��ָ��M��u�r,Ӌ�� Ⱦ��ĵȘ��Ⱦؓ��,�M�п��[5-6]�� ָ�˞��Ҫ�ֶεĿ��Ʒ��^��ľ��,�� EPA��]��һ��C�Ϸ��,��ͨ�^��W��x ��˜ʺ�ȫˮ�Ӷ��ށ��ˮ�|(zh��)��,�� yԇ��ļ��Ժ��Զ��[7],��ڱ�� yԇ��,�l(f��)�⼚��п��١��,��`��,�� M�õ��ă�(y��u)�c,�ǌ��Uˮ�M�м��Զ��Ԝyԇ��^ �÷��[8-11]��

��򞌦��Դ��B��_�l(f��)�^(q��)ĳ��t�Uˮ̎��S ��ͬ��ˇ�ε�3�N�Uˮ,�M��pHֵ,��늌��ʺ� COD��Ҫ��|(zh��)�Ĝy��;ͬ�r�y��l(f��)�� ﶾ��,��M�ж��Էּ�;�Y(ji��)��늌��ʺ� COD�M��˳��Ķ��b�e�u�r,��о��_ ��t�Uˮ�İ�ȫ�ŷ��ƶ��t�Uˮ�ŷŘ� ��,��M��t�Uˮ��ˮ�|(zh��)�u�r�Լ��Ⱦ�� ԱO(ji��n)�y�ṩ��A��(sh��)��(j��),��

1��򞲿��

1·1��x��ԇ��

DXY-2��ﶾ�Ԝyԇ�x(�Ї��ƌWԺ�Ͼ� ��о��); 85-2�ͺ�ش��(�Ϻ� ˾��x��S); THZ-82��ԡ��ʎ��(��K�� x��S); DHP-9082늟��B(y��ng)��(�Ϻ�һ ��Ƽ��޹�˾); LDZX-40CI��ʽ�Ԅ�늟ቺ ��(�Ϻ��갲�t(y��)��е�S);��ͬ�� ľ��Һ��(Thermo��˾); SJH�͝�� _(��Ѓ��x��S��֏S);΢��ܷ�� COD��ٜy��x(��ҭh(hu��n)��A�ϭh(hu��n)��ƌW�о� ��); HS-3S��(sh��)��Ӌ��DDS-12A��(sh��)��늌�� x(��ݖ|�ǃx��O��S)�ȡ��ʹ�õ�ˎƷ ��,��

1·2��ˮ�Ӳɼ�

��о��3�N��t�Uˮ��t�Uˮ̎��S�� ͬ��ˇ��,��像S�ŷ��ˮ,�� H2SO4-FeSO4߀ԭCr6+��Cr3+��ˮ�Լ��ˎ ��Cr3+��ˮ��ˮ�Ӳɼ��ܷ�� M��pHֵ��늌��,��W��[CODCr (O2, mg·L-1)]�͌��l(f��)��ﶾ�Ԝy��,��

1·3��N��B(y��ng)

��l(f��)��U��(Photobacterium phosphoreum) ��ɷ�ُ��Ї��ƌWԺ�Ͼ��о��΢�� ҡ��l(f��)��ɷۄ��ď��K,��б��N��B(y��ng),�� uƿ��Һ��B(y��ng)��Һ��Ƃ��^��Ҋ�īI

1·4��t�Uˮ��Է��

pHֵ,��늌��ʵĜy��˷��M��[13]; COD�Ĝy��ʹ��΢��COD��ٜy��x,��

1·5��t�Uˮ��l(f��)�⼚��EC50�Ĝy��

��t�Uˮ��pHֵ�^��,�b�ڙz��Ȍ� �l(f��)��Ԝyԇ��Ӱ�,��UˮpHֵ�{(di��o)��(ji��)ǰ�� ﶾ�Էքe�M��˜yԇ��˷�ֹ�{(di��o)pHֵ�r�� ,�茢�Uˮϡጺ��{(di��o)��(ji��)pHֵ��6~7, Ȼ��M�ж��Ԝyԇ,��

��pHֵ�{(di��o)��(ji��)ǰ��t�Uˮ,�Բɼ��ԭ�U ˮ��Ȟ��ߝ��,��10��ϡጷ��x��,�� ޝ��M��Aԇ�,�@�ýӽ�100%��0�l(f��)�� ďUˮ��,��(j��)�Aԇ�ĽY(ji��)��,��yˮ�� 3% NaCl��Һϡ��Ƴ�6��ݶ�,��ȡ5 ml��뵽��ĥ�ڱ�ɫ��,��5 ml 3% NaCl�� Һ��հ׌��,��ÿ��ݶ��O3�Mƽ�С��B(y��ng) �õĹ��Һȡ0·3 ml�ڸ��ɫ��(��ƿհ� ��չܰl(f��)�⏊�Ȟ�300~900 mV),�� ʎ,ȥ��, 15 min�r��ﶾ�Ԝyԇ�x�y��l(f��)�� ,��ֱ��(n��i)�巨��l(f��)��ʞ�50%�r�� ďUˮ��,��ԓ�N�Uˮ��l(f��)�⼚��딵(sh��)�l(f��) ��Ɲ��EC50,��pHֵ�{(di��o)��(ji��)��t�Uˮ, ��ϡጺ�ďUˮ��Ȟ��ߝ��,��Է��ͬpH ֵ�{(di��o)��(ji��)ǰ��t�Uˮ�Ĝyԇ��

1·6��t�Uˮ��Էּ��˜�

Bulich[9]��(j��)��ðl(f��)�⼚��,��~�,�� ԇ��y��I(y��)�Uˮ�ļ��Զ��Ԍ��Y(ji��)��,�� 3��Ա��^��˜�: (1)�ж�/�o��; (2) �ٷ֔�(sh��)�ȼ�; (3)��(sh��)�ȼ��аٷ֔�(sh��)�ȼ�� ˜ʞ��(n��i)��(sh��)��ˆT��,�@�N�ּ��ֱ �Ӱ�EC50��LC50�Ĵ�С�M�б��^,��ɴ� С��֞鏊��,��,��΢��͟o��4��ȼ��

………………

2��Y(ji��)��cӑՓ

3��Y(ji��)��Փ

Ԕ��(n��i)��Ո�鿴��֣�

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