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        1.1 �x��cԇ��

        1.1.1�x��
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1.4 ��(n��i)��

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2 �Y(ji��)��cӑՓ

2.1 ��ʼpHֵ��ӡȾ�Uˮ��Ӱ�

��ı�1��Կ��,��(y��ng)Ҵ��ʼpHֵ��COD��ӡȾ�Uˮ��Óɫ��Ӱ푺ܴ��pHֵ=2-6֮�g,��SpHֵ��,��Óɫ��_ʼ��ߣ�pH=3�rÓɫ��_90.6%,��Ȼ��@�½�,��pH=6�rÓɫ��ͣ��pH=8��10֮�g,��S��pHֵ��,��Óɫ��󣬵�׃��@,��Һ��pHֵ�ܸ�׃TiO2�w��늺�,��Ķ��׃�w��Һ�еķ�ɢ��r[5]��[H+]��ӕr,��TiO2��u��,��M�u��·OH��ɻ��·OH��ɻ��ĝ��,��ڏUˮ�Ľ��,��TiO2��һ�N��Խ����(d��ng)pH��ڵ��c�rTiO2��控ؓ늺�,��pHֵС�ڵ��c�rTiO2��控��늺�,��pH�c��c��ȕrTiO2��@��,��늺��|(zh��)Ӱ푷�ӳ�wϵ��|(zh��)��TiO2��,��Ӱ푹��ӡ��Ѩ��TiO2��w��Լ��댧(d��o)�w�M��ܼ��λ��,��Ӱ푹�߻��^��,��(d��ng)TiO2��控��늺ɕr��ڹ��߻��w�ƣ��c��O2��(y��ng),��Ķ��c��Ѩ��e-/h+��ď�(f��)��,��a(ch��n)��л��Ե�·OH��ɻ��M��߻��,��(d��ng)TiO2��控ؓ늺ɕr,��ڿ�Ѩ��TiO2��w�ƣ��c��һЩ��ӹ��wOH,��H2O��(y��ng)�a(ch��n)��Џ��Ե�·OH��ɻ�,��ʹ��(y��ng)��Ч��ߡ� ��(d��ng)TiO2��@��ԕr,��ӻ��Ѩ��w��,��Ч��^�

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��1��ʼpHֵ��UˮÓɫ�ʵ�Ӱ�

pHֵ	2	3	3.5	4	5	6	8	9	10
Óɫ�ʣ��	56.0	90.6	58.2	52.8	50.0	49.0	49.6	50.0	52.5

2.2 �߻��Uˮ��Ӱ�

��ɱ�2��Ҋ,��(d��ng)TiO2��4g/L�r�⽵��Ч��,��S��TiO2��ӣ��Ч��u��,��(d��ng)�_��һ��ֵ�r,��Ч�ʲ��ߣ��½�,��@��Һ�ĝ��ֱ��Ӱ푹�߻�Ч��,��m��(d��ng)��Ӵ߻��͸��Ժ�,��ڹ��c��댧(d��o)�w��ײ,��a(ch��n)��|(zh��)��ӿ콵��,��(d��ng)�߻��_��һ��ֵ�r,��õ��˳�ֵ��,��^�m(x��)��Ӵ߻��ʹ��Һ�ĝ��,��͸��ȜpС,��(d��o)�½��Ч��½��˴߻��m�˷��(n��i),��

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TiO₂��g/L��	0	1	2	3	4	5
Óɫ�ʣ��	7.9	89.5	90.6	92.0	93.6	91.7
CODȥ��ʣ��	35.3	54.9	68.6	78.4	83.5	80.8

��pHֵ=3��վ��x9cm,��Օr�g1h��

2.3 �⏊��Uˮ��Ӱ�

��о��й⏊��ͨ�^��׃��վ��x��׃��С,��ɱ�3��Կ��߻��ⷴ��(y��ng)��Ч��c�⏊��P(gu��n)��⏊Խ��,��TiO2��ܹ��ӵĔ�(sh��)ĿԽ��,��l(f��)��e-��h+��a(ch��n)��·OH��ɻ�,��⏊�^��,��߻��⣬ԭ��Ǵ˕r��g��ڴ߻��ĸ��ԏ�(f��)��,��˱��x��x9cm��,��

��3��⏊��UˮÓɫ�ʵ�Ӱ�

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Óɫ�ʣ��	90.9	93.6	94.4	92.9
CODȥ��ʣ��	80.4	83.5	82.5	53.4

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2.4 ��Օr�g��Uˮ��Ӱ�

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��4��Օr�g��UˮCODȥ��ʵ�Ӱ�

��Օr�g��h��	0.5	1	1.5	2	3	4
Óɫ�ʣ��	45.0	93.6	94.9	96.0	96.7	97.3
CODȥ��ʣ��	26.4	83.5	85.0	88.5	92.2	96.0

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2.5 �߻��

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��մΔ�(sh��)	0	1	2	3
Óɫ�ʣ��	96.0	93.9	93.5	92.4
CODȥ��ʣ��	88.5	84.3	82.3	80.4

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3 �Y(ji��)Փ

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