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��ʯ��ˮÓ��һ�N�ɱ��͵�һ�NÓ��g(sh��),��ʯ��ˮ��Ó��^��У�ֻ��ĳɱ��CaO,��U��CaSO₄��CaSO₃��m�Ļ��,��ˮ��ϵ�y(t��ng)�п��ѭ�h(hu��n)ʹ��,��

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1��е�SO₂�cˮH₂O��Ɂ��H₂SO₃,��

2,��е�SO₂�c��ˮ�е�Ca(OH)₂��CaSO₃��

3,��е�CO₂�c��ˮ�е�Ca(OH)₂��CaCO₃��,��

4��ѭ�h(hu��n)ˮ��^��CaCO₃��H₂SO₃�ÓQ��CaSO₃,��

5,��ѭ�h(hu��n)ˮ��^��CaSO₃��е��O₂��CaSO₄��

�齵��CaO(ʯ��)��,��ڇ��ˮѭ�h(hu��n)��,��և��ˮ��PHֵ��5-6֮�g��ڇ��ˮ�е�H₂SO₃��Ȳ��PHֵ��5.5��r,��ˮʯ��,��ʹ��ˮ��PHֵ�_��8��ϡ�

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1,��ÿ��(8С�r)��ʯ�ҝ{2-3��,��

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��NaOH��Na₂CO₃��Ó����õķ��,��^��㣬�]�г��,��ˮ��ѭ�h(hu��n)ʹ��,��횶��ڸ��Q��\��^��Ҫ��ĳɱ��^�ߵ�NaOH��Na₂CO₃,��

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1,��е�SO₂�cˮH₂O��Ɂ��H₂SO₃��

2,��H₂SO₃�cNaOH��Na₂SO₃,��

3��Na₂SO₃��ˮ��^��б�O₂��Na₂SO₄,��

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1,��ֹ�O��ľ��g��g��ʹ�ß��A(NaOH)��Ó�򄩕r,��A��һ�μ��̫��,��և��ˮ��PHֵ��8-9֮�g,��ˮ��PHֵ��6�r��ӉAҺ,��

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��̼��@NH₄HCO₃��Ó�򄩣��c�c�A��һ�Ӻ��ù��c,��ѭ�h(hu��n)ˮ�м��̼��@,��Եõ��a(ch��n)Ʒ��@��@��@��@��ܽ�ȱ�̼��@��ܽ��С�ö�,��\��^��Ё��@��@��ѭ�h(hu��n)ˮ��,��
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1��е�SO₂�cˮ�е�NH₄HCO₃��Ɂ��(NH₄)₂SO₃,��
2,��NH₄SO₃��ˮ��^��б�O₂��(NH₄)₂SO₄��
ע��헣�

1,��ѭ�h(hu��n)ˮ�� PHֵ��6�r,��NH₄HCO₃��NH₄HCO₃��ӿ��һ��Ͷ��,��

2,��a(ch��n)Ʒ��@��@�ɶ��c��һ��ȡ��Կ��ʹ��,��

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�c�A��Ó��ˮʯ�һ��ʯ��Ca(OH)₂߀ԭ�c�A(�p�A��Ó��),��p��c�A��ģ��Ó��^�̵��\��M��,��õ��a(ch��n)Ʒʯ��,��Ķ��_��ˮ��ϵ�y(t��ng)�п��ѭ�h(hu��n)ʹ�ã��ŷ��ˮ,��Ó��^��,��c�Aֻ��^�ɵ��, ��\��^��Փ��ġ�

�p�A��Ó��: ��c�A��ˮʯ��Ó��--��p�A��Ó��,��úȼ��^��ɵĶ��ˮ��Ɂ��Ტ�cˮ�е�Na+��Ɂ��c,��c��c��}��߀ԭ�c�A�́��}(��})��
NaOH+SO₂ →Na₂SO₃ Na₂SO₃+O₂→Na₂SO₄
Na₂SO₃+Ca(OH)₂→NaOH+CaSO₃↓ Na₂SO₄+Ca(OH)₂ →NaOH+CaSO₄↓
��(j��ng)߀ԭ��c�A��Һ�ڇ��^�m(x��)ѭ�h(hu��n)ʹ��,��c�A��ѭ�h(hu��n)�^��ֻ��ý��,��Ó�򷴑��^�̻��ģ��^��ɵā��}��}��ﶨ��ų�,��