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1.1��
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�~��ɰ��һ��~��ΑB(t��i)��,��Ҫ��~�V(3Cu₂S.As₂S₃)��~�V(Cu₃AsS₄)��,��V��ڲ��x�^��л��ˮ��x��~��ɰ�С��۟��^��,��~��ɰ�е��ڸߜؽ^�󲿷��M(j��n)��ұ��,��As₂O₃��ΑB(t��i)��ڡ��ұ��ͨ�^��,��,��D(zhu��n)��Ĺ�ˇ��Ƴ��ᡣ��Ṥˇ��һ�D(zhu��n)һ��r,��As₂O₃�^�󲿷��M(j��n)��β��,��(j��ng)β��̎��ϵ�y(t��ng)�M(j��n)��̎��ͻ��,��ʹβ��_(d��)��(bi��o)�ŷ�,��F(xi��n)��β��̎��ˇ��̎��M�øߣ��β��ŷ��y��_(d��)��(bi��o)�Ć��},��ұ��I(y��)��ͨ�^��g(sh��)��M��ܲ��Ã��D(zhu��n)��Ṥˇ,��ʹ��β��܉��_(d��)��(bi��o)�ŷš��е�As₂O₃��s�|(zh��)�t�M(j��n)�붨�ڳ��,��ٌ��M(j��n)��̎��,��ý��١��һЩ��I(y��)��ų��к��һ��_(d��)3��10g/L,��r��_(d��)20g/L,��к��s�|(zh��)��Fұ�ͽ�¡�~�I(y��)��˾��ɷ�,��Ҋ��1,��

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�ɷ�	H2SO4	As	F	Cu	Fe	Bi	Cd
�Fұ	529.9	5.281	1.181	1.348	0.545	0.410	0.149
��¡	1340.0	1.4	5.900	0.100	13.100	��	��

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1.2��ˮ
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ұ��I(y��)�Ĺ��I(y��)��ˮ��Ҫ��Դ��Չm�_ϴ��܇�g��_ϴˮ��r�c��Ⱦ��a(ch��n)ˮ,��ˮ��,��ɷ֏�(f��)�s��As,��Cu,��Pb��Zn,��Cd��к��x��,��M(j��n)��̎��_(d��)��(bi��o)�ŷš��д��ԵďS�^(q��)��I(y��)��ˮ�ɷ�Ҋ��2,��

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�ɷ�	H2SO4	As	F	Cu	Fe	Zn	Cd
�F��	3920	440	��	620	300	600	��
��¡	1314	182.8	86.1	172.6	547	307	0.03

2��ˮ��̎��

2.1��̎��

2.1.1��̎��ԭ��
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��I(y��)��a(ch��n)��ų��һ��ʯ��кͼ��_(d��)��Ч��,��~ұ��I(y��)��a(ch��n)�е��ڸ��s�|(zh��)�Ĵ��,��횲��򻯷��鼰�~�x�Ӻ��M(j��n)��кͷ�̎��,��ʹ��I(y��)��ˮ�_(d��)��(bi��o)�ŷ�,��Ŀǰ��(n��i)�S��̎��Ҫ��→�к�→��ˇ��к�→��→��ˇ��(j��ng)��a(ch��n)��`��C,��ȡ��˝M��Ч��,��¡�~�I(y��)��˾��õ��̎��ˇҊ�D1

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        ��кͷ��(y��ng)��ʯ�� CaCO₃+H₂SO₄=CaSO₄+H₂O+CO₂↑
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        �� Ó�~ Cu²⁺+S^2-=CuS↓
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        �� Ó�� 3Na₂S+As₂O₃+3H₂O��As₂S₃↓��6NaOH

       2.1.2��Ӱ��
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        ��Ậ��s��100g/L��ң�pH≈0,��кͷ��(y��ng)�^��һ��pH=1.5��3.5,��ʌ��m(x��)��鷴��(y��ng)Ӱ��΢��Ҫ��r��ΑB(t��i)��,��AsO⁺�x��,��λ—pH�D��ȥ�鷴��(y��ng)��,��(y��ng)��߀ԭ�λ��-50��+50mv֮�g,��(j��ng)��a(ch��n)��`�C��ڴ˿��Ɨl��,��ȥ��ʿ��_(d��)95%,��~��ȥ��ʿ��_(d��)98%��ϡ�
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        ��÷ֲ��򻯹�ˇ̎��,��̎��ķ��(y��ng)Һ��һ��100mg/L,��܉��е��ý��٣��ˮ̎��վ��_(d��)��(bi��o)�ŷń�(chu��ng)��˗l��,��򻯹�ˇ�O(sh��)��Ͷ�Y��̎��ɱ��^��,��̎��ɱ��Na₂S��M�üsռ̎��M�õ�20%��30%��̎��ɱ��s��Ԫ��,��Ͷ��͸߳ɱ��Ƽs��һЩ��С��I(y��)��ԓ��ˇ��\(y��n)��,��Y��@ʾ��늷e��̎��ɱ��򻯷��Ŀǰ��γ�ԇ�Ҏ(gu��)ģ,��ܺܿ��a(ch��n)�еõ��\(y��n)��,��

2.2 ��ˮ��̎��

        2.2.1��̎��ԭ��
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        �~ұ��I(y��)��O(sh��)��ˮ̎��վ��̎��܇�g��ˮ��ȫ�S��a(ch��n)��ˮ,��һ��M(j��n)��S��ˮ̎��վ��ˮ��c��̎��,��ɷݏ�(f��)�s��¡�~�I(y��)��˾�ͽ��ұ��S�ľC��ˮˮ�|(zh��)��Ҋ��2,��

        �ؽ��x��,��؄e��x�ӣ��o��ˮ̎��ˇ��x�񎧁�һ��y��,��GB8978-1996�޶��ŷŝ�Ȟ�0.5mg/L,��O(sh��)Ӌ�xȡ�Ĺ�ˇָ��(bi��o)��,��x�ӵĿ�?c��)��Ҫ�_(d��)��99%��ʹ̎��ˮ�_(d��)��(bi��o)�ŷ�,��ú��ε�ʯ��к͹�ˇ��ܱ��Cˮ�|(zh��)�_(d��)��(bi��o)�ŷ�,��ڽ��Ͷ�a(ch��n)�Ĵ��~ұ��I(y��)��M(j��n)�м��g(sh��)��ĭh(hu��n)��I(y��)��ˮ̎��ʯ��ɶ��кͼ��F�}��鹤ˇ,��(j��ng)��a(ch��n)��`�C��,��ԓ��ˇ��֮��Ч�ģ��x��_(d��)��(bi��o)�ŷŕr,��ؽ��x�Ӿ��_(d��)��(bi��o)�ŷ�,��ԓ��ˇ��Ҋ�D2

        ԓ��ˇ��(y��ng)�C(j��)��քe�飺
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        һ��кͷ��(y��ng)��PH��7��8�� Ca(OH)₂+H₂SO₄=CaSO₄↓+2H₂O₂       H₃AsO₃+Ca(OH)₂=Ca(AsO₂)₂↓+4H₂O
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        ��(y��ng)�քeʹFe²⁺��Fe³⁺,As³⁺��As⁵⁺��F�}��F�},��   4Fe(OH)₂+O₂+2H₂O=4Fe(OH)₃    2Fe(OH)₃+3As₂O₃=2Fe(AsO₂)₃↓+3H₂O
                Fe(OH)₃+H₃AsO₄=F₃AsO₄+3H₂O      Fe(OH)₃+H₃AsO₄=FeAsO₃+3H₂O

        2.2.2��Ӱ��
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