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ժҪ��ĳ��ˮ�Sԭ�ЏUˮ̎��ˇ�y��ʹ��ˮɫ�ȷ�(w��n)��_��ŷ�,��Ҵ��ڼ�ˎ��󣬌�(d��o)�µ��ȼ��鳬�˵��L�U,��ó��ˇ��Uˮ�M��Óɫ̎��,��Y(ji��)��ĳ��̎��ϵ�y(t��ng)��(w��n)��,��Ч��,��ɫ�ȡ�COD ��ȥ��ʷքe��70%,��15%,��M��ȥ��ɫ�Ⱥ��h��ȥ��COD ��Ҫ�󣬜p�ٺ��m(x��)ˎ��Ͷ��,��ˮˮ�|(zh��)�_��Ϻ��ˮ�C��ŷŘ˜ʣ�DB 31/199��2009��ŷŘ˜�,��ϵ�y(t��ng)�\��M��0.39 Ԫ/m3��\��M�ñȸ��ǰ�p��0.07 Ԫ/m3,��

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1.1 ԭ�й�ˇ��

ԭ�Uˮ̎��ˇ��Ҋ�D1��Ñ��ŷŏUˮ��(j��ng)��Ͼ��M��кͳ�,��M��pH �{(di��o)��6��9,��ˮ��ȱ��أ��ڷ��,��ӵ��ṩ��,��B(t��i)��׃�ɵ��ˮ��ȥ��ȱ��l��´��|(zh��)��׃��С��ӽY(ji��)��(g��u)��,��ȱ��س�ˮ��ؚ��,��M�к�̼��|(zh��)��ȥ��ã��ص��ȱ��M��,��ֹ��B(t��i)��ڶ��ذl(f��)��,��ϸ��ʹ��ϵ�y(t��ng)�Ļ��|(zh��)��ȱ��ֺ㶨,��س�ˮ�M��⸡��,��߳�ˮ��c�Ҹ��P(gu��n)��Ⱦ��ָ�˵�ȥ��ʣ��F(xi��n)��̎��,��鱣�C��ˮɫ��_��,��ˮͶ�Ӵ��c�M��Óɫ��Ͷ�Ӂ��c�_��ˮ��_��,��ʣ��Óˮ��\�ٟ�̎��,��

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Fig.1 Flow chart of original wastewater treatment process

1.2 ��چ��}

�Uˮ��(j��ng)��+�⸡̎��ˇ��mȻ�ܱ��CCOD,��BOD5,��TN ��_��ŷţ��Ȼ��}��

��1��ˮɫ�Ȳ��ܷ�(w��n)��_��ŷ�,��ˮ�S�ЙC�Uˮ��Mˮɫ�ȸ�,��l(f��)ɫ�ɷݏ�(f��)�s��һ�ҿ͑��ЙC�Uˮɫ�ȸ��_3 000 ��ң��K⒱�ɫ��,��mȻ��ˮ�S��̎��ˇ�ͺ��m(x��)�Ě⸡�b�Ì�ɫ��һ��ȥ��,��ȥ��ʃH�s��28%��⸡�س�ˮ�_250��300 �ȣ��K⒱�ɫ��,��˲�ȡ��ڳ�ˮ�{(di��o)��(ji��)��ǰͶ�Ӵ��c�ķ�ʽ��Mһ��ȥ��ɫ��,��C��ˮɫ��_��,��

��2��ȼ��鲻�ܷ�(w��n)��_��ŷš��ˮ�S�Mˮ�ЙC�Uˮɫ�Ȳ��Ӵ�,��H�\��ɴ��c�^��Ͷ��,��Ͷ��_11��15 t/d��(j��ng)�^��һ��µĽy(t��ng)Ӌ,��l(f��)�F(xi��n)�ڳ�ˮ�{(di��o)��(ji��)��ǰ��c��,��ȼ��ƽ��ؓ��177%��@��H��ɼ�ˎ��M,��ȼ��鳬��L�U,��

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2.1 ��ˇˮ�|(zh��)��ˮ��

��]��h�ڌ��ŷŘ˜ʵ��,��Լ��ˮ�S�U��Ӱ�,��O(sh��)Ӌ��̎��ˮ��2.5 �fm3/d��ˇ�O(sh��)Ӌ�Mˮˮ�|(zh��)��ŷŘ˜�Ҋ��1,��

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Tab.1 Design influent quality and discharge standard

2.2 ��ˇ��

��Ĺ�ˇ��D2 ��ʾ,��Uˮ��(j��ng)��+�⸡̎��ˇ��M��|��,��Óȥˮ�е�ɫ��,��h��Ҳ�ɝM��ȥ��COD ��Ҫ�󣬱��c�́��c��ˎͶ��ϵ�y(t��ng),��_��Mˮɫ�Ȳ��^��r,��ˮɫ�ȵ�ָ��ܷ�(w��n)��_�ˡ�

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Fig.2 Flow chart of current wastewater treatment process

2.3 ��Ҫ��(g��u)��Ｐ�乤ˇ��(sh��)

��|�أ�ƽ��ߴ�23.4 m×8.2 m,��Чˮ��7.0 m,��1 ��2 �񣬽��|�r�g55 min,��Ͷ��18��25 mg/L,��

��Ƃ��g��ƽ��ߴ�25.0m×15.7m��(n��i)�O(sh��)��l(f��)��1 �ף��Ͷ��ϵ�y(t��ng),��l(f��)��ϵ�y(t��ng),��Ͷ��c�Uɢϵ�y(t��ng)��β��Ɖ�ϵ�y(t��ng),��ϵ�y(t��ng),��x��cPLC ��ϵ�y(t��ng)��ܵ�ϵ�y(t��ng)��,��]��h��ȥ��COD ��Ҫ��,��A(y��)��3 �׿�λ��Չ��Cϵ�y(t��ng)1 �ף��՚≺�s�C,��s��,��՚⃦�ޣ��^�V��ȣ�,��sˮϵ�y(t��ng)1 �ף��sˮѭ�h(hu��n)��,��Q��ȣ��

Һ��^(q��)��1 �׃��,��V=30 m3,��c��·��g��M�㡶��O(sh��)Ӌ��Ҏ(gu��)��,��

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3.1 ɫ��ȥ��Ч��

��(j��ng)�^2 ��µ��{(di��o)ԇ��ϵ�y(t��ng)�M��˷�(w��n)��\��,��Ŀǰ��]��ˮ��ͽ�(j��ng)��ԭ��,��̎��ϵ�y(t��ng)ֻ�\��һ�l��ɈD3 ��֪��D�Д�(sh��)��(j��)��10 ��2 �ա�11 ��1 �գ�,��ɫ��ȥ��Ч��65%��75%��,��10 ��3 �Օr��ɫ�ȵ�ȥ��ʲ��50%,��M�ܮ��Ӵ��˳��Ͷ�ӝ��,��l(f��)�F(xi��n)ɫ��ȥ��ʲ��]�еõ��ܴ��ߣ�Ҳֻ��52%,��l(f��)�F(xi��n)10 ��3 �յ��Mˮ��15 687 m3/d,��Mˮɫ��306 �ȣ��K�ɫ�ȣ��O(sh��)Ӌ��ÿ��ϵ�y(t��ng)��̎��ˮ��12 500 m3/d,��ɫ��250 �ȣ��K�ɫ�ȣ�,��Mˮɫ��ؓ��h�h��O(sh��)Ӌֵ��@��ǌ�(d��o)��ɫ��ȥ��Ч�ʵ��µ�ԭ��,��

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Fig.3 Effect of ozone on effluent color

�Uˮ��(j��ng)��,��ˮɫ��߀��40��100 ��ң��,��߀��Ͷ�Ӵ��c�M��Mһ��Óɫ,��Ͷ��s3 t/d��ˮ��ɫ�ȶ��32 �ȣ��K�ɫ�ȣ��,��ȼ��С��0.03 mg/L,��10 ��Ѯ�h(hu��n)��T�O(ji��n)�y�Y(ji��)��@ʾ��ɫ�Ȟ�35 ��,��COD ��60 mg/L,��ϵ�y(t��ng)��ͨ�^�h(hu��n)��ա�

3.2 COD ȥ��Ч��

��COD ��yͨ�^��﷽��ȥ��,��ď��Կ��Чȥ��һ��COD,��ĈD4 ��Կ��ˇ�MˮCOD �s70 mg/L,��ˮCOD �s��58 mg/L��COD ȥ��ʼs��15%��,��ɝM��h��COD �ŷŘ˜��ߵ��Ҫ,��Ŀǰ��COD �ŷŘ˜ʞ�С��100 mg/L,��