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1. ��

��W(xu��)��chemical oxygen demand,��QCOD)��ָˮ�w��ױ��(qi��ng)��߀ԭ��|(zh��)��ĵ��,��Y(ji��)��mg/LӋ��,��COD�y��Adeney��ģ��F(xi��n)�ڇ��(n��i)��V��ʹ�õķ��,��W(xu��)��(bi��o)��(zh��n)��2С�r��˷��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��Ɖĭh(hu��n)��Ⱥ��ƽ�Ⲣ��Ӱ�,��Ķ��ˮ�w�Đ��

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

��W(xu��)��COD�Ķ��ķN�,��ȡ��(y��ng)�ض�,��r�g��ֶεȗl��Ĳ�ͬ��F(xi��n)��ͬ�ĽY(ji��)��,��ʹ��ͬ�ӗl��Ҳ��ˮ�w��߀ԭ��|(zh��)�ķN��c��Ȳ�ͬ��ʬF(xi��n)��ͬ��̶ȡ��һ��,��Ӱ��Ҳ��Ӱ푵��z�y�Y(ji��)��Ĝ�(zh��n)�_��,��緽��y��Ĵ_��x�ӝ�ȵ�Ӱ�,��ϡጱ��(sh��)��Ӱ��Լ��߻��Пo��,��ˣ��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��һ��ˮ��ʿ��_(d��)��90%��,��ڴ��(sh��)��͵ďUˮ,��y��Ч��ߞ��õķ��,��ڝB�VҺCODֵ��c��һ��ᘌ��,��

2. �B�VҺ�л��W(xu��)��Ĝy��

1�� ԭ��

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

��ӟ�r��(y��ng)�ضȞ�140��,��(y��ng)�wϵ��Ȟ�9mol/L,��ϵ��(sh��)��0.72��ʴ˕r�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——�^��ض�,��n——��W(xu��)��(y��ng)�Į�(d��ng)��(sh��)��F——��ڳ��(sh��),��9.65×104C/mol,��r——��ϵ��(sh��)��a——��,��C——��,��

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

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

2�� ɷN��ڝB�VҺ�z�y�еđ�(y��ng)��

��1�� _�ڼӟ��ζ��

�x��ɻ��b�á��ӟ��b�ú��ʽ�ζ��ܽM��,��

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

�D1

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

��2�� ܷ�ߜ��ɫ��

�x��b�úͷֹ��Ӌ�M��,��

ˮ��ڸߝ��ԇ��߀ԭ��(j��)��(bi��o)��(zh��n)��Һ��ˮ��߀ԭ��ɫ��e,��÷ֹ��Ӌ��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,��

3�� ı��^��

3. �Y(ji��)Փ

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

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

3�� ڜy��_�ڼӟ��ζ��(y��u)��ܷ�ߜ��ɫ��,��

4,�� ں��Õr�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��l(f��)ɢ��՚��У��Ҍ��ˮ�^�ٮa(ch��n)��ďUҺҲ�^��,��,��ܷ�ߜ��ɫ��(y��u)��_�ڼӟ��ζ��,��

6,�� ڙz�y�ɱ��棬�ܷ�ߜ��ɫ��_�ڼӟ��ζ��,��

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

8,�� ˣ��С��Ę�Ʒ�z�y,��]ʹ��ܷ�ߜ��ɫ��,��

4. ��īI(xi��n)

1��ˮ�͏Uˮ�O(ji��n)�y��ί��ˮ�͏Uˮ�O(ji��n)�y��,��İ�,��Ї��h(hu��n)��ƌW(xu��)��磬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��)��,��28-33퓣��1��/2002

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