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1. ��

��W(xu��)��chemical oxygen demand,��QCOD)��ָˮ�w��ױ��(qi��ng)��߀ԭ��|(zh��)��ĵ��,��Y(ji��)��mg/LӋ(j��)��,��COD�y��Adeney��ģ��F(xi��n)�ڇ��(n��i)��V��ʹ�õķ��,��W(xu��)��(bi��o)��(zh��n)��2С�r(sh��)��,��˷��H��(n��i)��J(r��n)��COD�Ǳ��ˮ�w��߀ԭ��|(zh��)�ľC��ָ��(bi��o),��ˮ��,��߀ԭ��|(zh��)��Ҫ��ЙC(j��)��,��M��ԓ�N��̼��,��,��Ԫ��̎��^�͵��B(t��i)��Ȼ��ѭ�h(hu��n)��߀ԭ��|(zh��),��؄e��ЙC(j��)��ｵ��^��ܽ��Dissolved Oxygen,��QDO��ʧ�ܽ��ʧ��(hu��)�Ɖĭh(hu��n)��Ⱥ��ƽ�Ⲣ��Ӱ푣��Ķ��ˮ�w�Đ��,��

��W(xu��)��ͨ�,��ˮ�w��ЙC(j��)��(du��)��(du��)�ڹ��I(y��)�Uˮ��о��ˮ̎��Ч��u(p��ng)�r(ji��)��f,��һ��(g��)��Ҫ��׵õą��(sh��),��

��W(xu��)��COD�Ķ��ķN��,��(y��ng)�ض�,��r(sh��)�g��ֶεȗl��Ĳ�ͬ��F(xi��n)��ͬ�ĽY(ji��)��ʹ��ͬ�ӗl��Ҳ��ˮ�w��߀ԭ��|(zh��)�ķN��c��Ȳ�ͬ��ʬF(xi��n)��ͬ��̶�,��һ��,��Ӱ��Ҳ��(hu��)Ӱ푵��z�y�Y(ji��)��Ĝ�(zh��n)�_�ԣ��緽��y��Ĵ_��,��x�ӝ�ȵ�Ӱ푡�ϡጱ��(sh��)��Ӱ��Լ��߻��Пo��,��,��(du��)��COD��f��ǆ�һ��x��ָ��(bi��o),��S��y��Ĳ�ͬ,��y��ֵҲ��ͬ��ˮ�w��߀ԭ��|(zh��)��Ⱦ�ľC��ָ��(bi��o),��Ҫ��ˮ�w��ЙC(j��)��Ⱦ�ľC��ָ��(bi��o),��

��W(xu��)��COD�Ĝy��Ҫ��ͺͶ����Ҋ��t��⛷�,��,��Ҳ��ܷ�ߜ��ɫ��ǰ��Ŀǰ�^��ձ鑪(y��ng)�õķ��,��һ��ӛ��CODcr,��@�Ǹ��J(r��n)�ɶ��õġ��(du��)��һ��ˮ��ʿ��_(d��)��90%��,��(du��)�ڴ��(sh��)��͵ďUˮ,��y��Ч,��ߞ��õķ��(du��)�ڝB�VҺCODֵ��c(di��n)��һ��ᘌ�(du��)��,��

2. �B�VҺ�л��W(xu��)��Ĝy��

1�� ԭ��

��t��ڏ�(qi��ng)��|(zh��)�е��(y��ng)ʽ�飺

��ӟ�r(sh��),��(y��ng)�ضȞ�140�棬��(y��ng)�wϵ��Ȟ�9mol/L,��ϵ��(sh��)��0.72,��ʴ˕r(sh��)�ėl��늘O�λ�飺

ʽ�У�E��——�l��늘O�λ��E0——��(bi��o)��(zh��n)늘O�λ,��R——��w��(sh��),��.8.314J/K?mol��T——�^��(du��)�ض�,��n——��W(xu��)��(y��ng)�Į�(d��ng)��(sh��),��F——��ڳ��(sh��)��9.65×104C/mol,��r——��ϵ��(sh��),��a——��ȣ�C——��,��

�ɴ˿�Ҋ,��(y��ng)�l��£��^�ߵ��,��ʹ�S��ЙC(j��)��_(d��)��95~100%,��

��ʹˮ��߀ԭ��|(zh��)�ĳ�־��Ҫ��߻��y,��ȫ��ܽ��ʹ��,��(du��)Cl-�ĸɔ_һ��HgSO4ȥ��0.4g HgSO4/20mlˮ��,��

2�� ɷN��ڝB�VҺ�z�y�еđ�(y��ng)��

��1�� _�ڼӟ��ζ��

�x��ɻ��b��,��ӟ��b�ú��ʽ�ζ��ܽM�ɡ�

ˮ��Һ��,��c��֪�^��t��y��߻��ṯ��x�Ӹɔ_��ڱ΄��,��M(j��n)�й̶��r(sh��)�g�ļӟ��ڻ��r(sh��)�g��(n��i),��в��t��}��ڵĿɱ��|(zh��)��߀ԭ,��ԇ��F�`��ָʾ��၆�F�@�ζ�ʣ��t��},��ĵ��t��}��Ӌ(j��)��CODֵ,��EҊ�D1��

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�y��(d��ng)�B�VҺˮ��COD��900mg/L�r(sh��)��(y��ng)��(du��)ˮ��M(j��n)��ϡጺ��ٜy,��

��2�� ܷ�ߜ��ɫ��

�x��b�úͷֹ��Ӌ(j��)�M��,��

ˮ��ڸߝ��ԇ��߀ԭ,��(j��)��(bi��o)��(zh��n)��Һ��ˮ��߀ԭ��ɫ��e��÷ֹ��Ӌ(j��)��420nm̎�M(j��n)�б�ɫ��,��L�Ƙ�(bi��o)��(zh��n)��,��_��ˮ�ӵ�CODֵ��

�y��COD�z��Ȟ�0.2mg/L,��y��ޞ�1500 mg/L,��

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3. �Y(ji��)Փ

1�� B�VҺ�е�CODֵһ��1000-50000mg/L�ķ��(n��i)��(d��ng),��ȿ��ֵ�^��,��ˣ��ڌ�(sh��)�H�z�y�^��б��ȴ_��COD �Ĵ��·��,��_��m��ϡጱ�,��(zh��n)�_��Ӌ(j��)��Ʒ�c��Һ�Ļ�ϱ��@�Ӳ��ܱ��C�B�VҺ�е�߀ԭ��|(zh��)��Գ�ֵ��,��ʹ��(sh��)�(y��n)��(sh��)��(j��)��һ��Ŀɿ��,��

2�� ڜ�(zh��n)�_�ȷ��_�ڼӟ��ζ��ܷ�ߜ��ζ��^��,��_�ڻ��ʹ��^��,��Ч��фt�O��ɻ��Һ�ć��R��ͬ�r(sh��),��ڱ΄��ʹ��͵ζ��ܵľ��Ҳ��(hu��)ֱ��Ӱ푵ζ��K�c(di��n)��Д�,��@Щ��ض��ֱ�ӽ��͔�(sh��)��(j��)�Ĝ�(zh��n)�_�ȡ�

3,�� ڜy��_�ڼӟ��ζ��(y��u)��ܷ�ߜ��ɫ��,��

4�� ں��Õr(sh��)�g��ܷ�ߜ��ɫ��(y��u)��_�ڼӟ��ζ��,��_�ڼӟ��ζ��Ҫ3h��ܷ�ߜ��ɫ��t�H��1h,��

5,�� ڶ��Ⱦ��棬��ڝB�VҺ��^��,��ܷ�ߜ��ɫ��ܷ��,��к��w��(hu��)��l(f��)ɢ��՚��У��Ҍ�(sh��)�(y��n)��ˮ�^�ٮa(ch��n)��ďUҺҲ�^��,��,��ܷ�ߜ��ɫ��(y��u)��_�ڼӟ��ζ��,��

6,�� ڙz�y�ɱ��,��ܷ�ߜ��ɫ��_�ڼӟ��ζ��

7,�� ڌ�(sh��)�(y��n)��ȫ�Է��,��ܷ�ߜ��ɫ��(y��u)��_�ڼӟ��ζ��_�ڻ��^��,��Ч��јO��ɻ��Һ�ć��R,��̎��r(sh��)�Ϳ��ˆT��O(sh��)ʩ�ēp��

8,�� ,��(du��)��С��Ę�Ʒ�z�y��]ʹ��ܷ�ߜ��ɫ��,��

4. ��īI(xi��n)

1,��ˮ�͏Uˮ�O(ji��n)�y��ί��(hu��)��ˮ�͏Uˮ�O(ji��n)�y��İ�,��Ї��h(hu��n)��ƌW(xu��)��,��2002

2��ǽ��(zh��n)�h(hu��n)��l(w��i)��(bi��o)��(zh��n)��g(sh��)�w�چ�λ,��O(sh��)��н��O(sh��)˾��ݭh(hu��n)�l(w��i)̎,��Ї��(bi��o)��(zh��n)��磺��(zh��n)��ݭh(hu��n)��l(w��i)��(bi��o)��(zh��n)�R��Ї��(bi��o)��(zh��n)��,��2001

3,��ǽ��н��O(sh��)�о�Ժ�h(hu��n)��l(w��i)��̼��g(sh��)�о��O(sh��)��h(hu��n)��l(w��i)��̼��g(sh��)�о��ģ��̎��g(sh��)��,��28-33�,��1��/2002

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