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SO₂(��B(t��i)) + H₂O → H₂SO₃ → H⁺+ HSO₃^-

HSO₃^- → H⁺+ SO₃^2-

SO₃^2-+ 1/2O₂→ SO₄^2-

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��SO₂��ĺ�ˮ��H+��,��ʹ�ú�ˮ��PHֵһ��3��,��ʏ��,��Ҫ��r�ĉA�Ժ�ˮ�c֮�к��PHֵ��Ó��ˮ�е�H+�c��r��ˮ�е�̼��}�l(f��)��·��(y��ng)��

HCO₃^- + H⁺ → H₂CO₃→ CO₂↑ + H₂O

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��(y��ng)�п��Կ��,��ˮÓ��ˮ�Ϳ՚��ⲻ��κλ��WÓ��,��ˮ��(j��ng)�֏ͺ��Ҫ��SO₄^2-��ˮ�}�ֵ��Ҫ�ɷ��Ȼ��c��},��Ȼ��ˮ��}��һ��2700mg/l,Ó��ӵ��}�s70��80 mg/l,��Ȼ��ˮ��ӷ��
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