ؓ(f��)�d��TiO2�̶��߻��⺬�ӏUˮ��ԇ��о�

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1��򞲿��

1.1�x��ԇ��

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ؓ(f��)�d��TiO2��߻��Ƃ䣺��ϴ��ɵĹ��z�w��TiO2�c��c��һ��ɵ��Һ��,��ʹ��ؓ(f��)�d��ȡ��Ȼ��,��R��t��300��џ�1h,��Ҝغ��ˮ�_ϴ��ؓ(f��)�d��ε�TiO2��Ƶ�ؓ(f��)�d��TiO2��߻��,��

1.2��

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1.3��򞷽��

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2�Y(ji��)��cӑՓ

2.1ԇ�l��Ĵ_��

ȡ��ӏUˮˮ��1L��ڷ��(y��ng)��(n��i),��ԇ�l��£�

A��ˮ��+TiO2,��B��ˮ��+UV��C��ˮ��+TiO2+UV,��(y��ng)1h,��ÿ��15minȡһ�Θӣ��y��ӽ��,��

C��ѷ��(y��ng)�l��,��߻��±��ӵĽ��ٶȼӿ�,��ӵĽ��@��,��C��ӵĽ��Թ�߻��(y��ng)��Mһ��f��TiO2�߻��ЙC��ȫ��,��

2.2�߻��TiO2Ͷ��ʵ�Ӱ�

ȡ��ӏUˮˮ��1L,��ڷ��(y��ng)��У��2.1��C�l��,��Ͷ�Ӳ�ͬ��Ĵ߻��Ͷ�ӵ��Է��(y��ng)��ײ��e��,��1/3��ʾ�߻��Õr��ռ�ײ��e�ķ�?j��n)?sh��)��(y��ng)1h��y��,��

�S��߻��Ͷ��,��(y��ng)��ٶ��u�ӿ�,��ӽ��f��TiO2�߻��ЙC��CO2,��߻��Ͷ��ȡ��䁝M�ײ��,��

2.3����ʵ�Ӱ�

��2.1��C�l��£��ڷ��(y��ng)��ײ�䁝M�߻��,��{(di��o)��(ji��)��,��ڷ��(y��ng)1h�ėl��£��y��ӽ��ʵ�Ӱ�,��

��ԽС,��ӵĽ��Խ�ߡ��̫С,��⾀��֕��ӟᷴ��(y��ng)Һʹ֮�ض��,��y�Կ��ơ��̫��,��ʹ��@�½�,��ԣ��x75mm�^��m,��

2.4�UˮpH��ӽ��ʵ�Ӱ�

ȡ��ӏUˮˮ��1L,��ڵײ�䁝MTiO2��߻��ķ��(y��ng)��У��75mm,��{(di��o)��(ji��)�UˮpH��2,��4��6,��8,��10��12,��(y��ng)1h��y��ӵĽ��,��

pH��2��4,��6�r,��ӽ����pH��8,��10�r,����ֻ��pH��11,��12�r��ӽ��@�½�,��ԗl��ȥ��Ч��ډA�ԗl��º�,��ڏUˮpH��5.64,��̎��̎��Ч��õķ��(n��i)��{(di��o)��(ji��)ˮ��pHֵ,��

2.5��߻��ӽ��ʵ�Ӱ�

2.5.1��΢��H2O2��ӽ��ʵ�Ӱ�

��2.4��ԇ�l��,��ȡ��ӏUˮˮ��1L��A��TiO2+H2O2+UV��,��B��TiO2+H2O2��N��r��^H2O2��ʵ�Ӱ�,��

�Uˮˮ��΢��H2O2��7.1×10-4mol/L��Դ��߱��ӵĽ��,��45min�󱽷ӽ��_��90%��,��H��H2O2�s��ˮ�ӷ��(y��ng)45min�󣬱��ӽ��ʃH��2.55%,��@��H2O2һ��ӵĽ��w,��c��ӵĠ��Z��ֹ��TiO2��—��Ѩ��ď�(f��)��,��ܸ��خa(ch��n)��к܏��·OH��O2-2,��һ��棬H2O2��Ҳ�ܰl(f��)��,��a(ch��n)��ԵĚ��ɻ�,��ӵĽ��Ч��@��ߡ�

2.5.2��΢��H2O2��m��Fe3+��ӽ��ʵ�Ӱ�

��2.4��ԇ�l��,��ȡ��ӏUˮˮ��1L,��A��TiO2+UV+H2O2+Fe3+��B��TiO2+UV+Fe3+��N��r��^H2O2+Fe3+��ӽ��ʵ�Ӱ�,��

ͬ�r��΢��H2O2��7.1×10-4mol/L��m��Fe3+��20mg/L��ȃH��΢��H2O2��H��m��Fe3+̎��Ч��Ҫ��,��45min��ʼ��_��95%��ϡ��о��,��TiO2�߻��,��ӹ�߻��(y��ng)�^��У��y��Įa(ch��n)��,��,��ϩ��ᡢ혶�ϩ��,��,��ἰ��̼��a(ch��n)��ֲ��S�r�g��׃��Ҏ(gu��)�ɿɷ֞��A�Σ��(y��ng)��A��,��ȳ��F(xi��n)��Ǳ��h(hu��n)��u��,��ڶ��A�γ��F(xi��n)�Įa(ch��n)��鱽�h(hu��n)�Y(ji��)��(g��u)�Ɖĺ�Ķ�Ԫ�ᣬ��A�Ξ��A��,��g�a(ch��n)��J�p,��a(ch��n)��Զ��̼��,��a(ch��n)��ֲ��A�Σ��^��ЙC�Y(ji��)��(g��u)�Ľ��څ��,��——��h(hu��n)�u��——�_�h(hu��n)��——��̼,��

2.5.3��΢��H2O2��m��Cu2+����ʵ�Ӱ�

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ˮ��ͬ�r��΢��H2O2��m��Cu2+��0.8mg/L��,��ӽ��ʵ�Ӱ��úͼ�H2O2+Fe3+��Ӱ���࣬��ȆΪ��΢��H2O2̎��Ч��Ҫ��,��

2.5.4��ͬ�l��º��ӏUˮCODCrȥ��ʵı��^

ȡ��ӏUˮˮ��1L,��ڵײ�䁝MTiO2��߻��ķ��(y��ng)��У��75mm,��ˮ��pH��5.6,��A��TiO2+UV��B��TiO2+H2O2+UV��,��C��TiO2+H2O2+Fe3++UV��,��D��TiO2+H2O2+Cu2++UV��ķN��r��^CODCrȥ��,��Y(ji��)��1��ʾ,��

��1��ӏUˮCODCrȥ��ʵı��^

�ı�1�ɿ��TiO2��߻��ӏUˮ�^��,��H2O2,��Fe3+��Cu2+�кܺõ��߻��ã��CODCrȥ��_��90%��,��ԭ��^��ͨ�^��N��ʽ�a(ch��n)��u��ɻ��

H2O2→2OH·

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2.5.5�߻��Ļ��ԇ�

��ʹ��^��ؓ(f��)�d��TiO2�߻��ȥ�x��ˮ�_ϴ�Ƀ�,��100��ɂ��á��߻��cǰ��ʹ�Õr�Ĵ߻��^,��Y(ji��)��,��؏�(f��)ʹ�õ�ؓ(f��)�dTiO2�߻��߻��ԛ]��׃��ÿ��ԇ�Y(ji��)��δ�l(f��)�F(xi��n)TiO2��ĩ�Ĵ��,��,��Ƶõ�ؓ(f��)�dTiO2��߻��ܷ�(w��n)��ճ��ι�,��؏�(f��)ʹ��,��

3�Y(ji��)Փ

�C��ؓ(f��)�d��TiO2��߻��,��ں��ӏUˮˮ��pH=5.6��,��ʼCODCr��Ȟ�280mg/L��m��H2O2+Fe3+��H2O2+Cu2+��,��@��ߏUˮ�Ĺ�߻��,��Ҵ߻��ܷ�(w��n)��ԓ�߻��؏�(f��)ʹ��κ�δ�z�y��@�½�,��ڹ��I(y��)�Uˮ̎��^��о��һ��_�l(f��)��(y��ng)�Ãrֵ,��

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