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��ˮ��Ҫ��Ⱦ��V��,��y��ЙC�Ｐ��Ԅ��,��Ŀǰ�|��ĳ��ˮ̎��̑��Ψһ��еļ��g(sh��)��- �ﻯ�f(xi��)ͬ��ˇ��, ��ͻ��Y(ji��)�ϵķ��, ̎��ˮCOD �܉�M��ˮ�C��ŷŘ˜�( GB8978-1996) һ��ŷ�Ҫ��. ��̎��O(sh��)��ʧ�޼��\�й��д��ȱ��, Ŀǰԓ�S��ˮ�_��A��Ŀ��. ��֕r�g��Ⱦ��س��. COD�s150 mg / L, ��ʯ��Ⱦ�ﳬ�^10 mg/ L��ᘌ��ˆ��}, ͨ�^�о��P(gu��n)��g(sh��), ��ˮ�M��̎��Ŀ��,��

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