��W(xu��)��ȥ��ˮ��Ⱦ��ԇ��о�

��r�g��2012-04-09 10:47 ��Դ��V�|�� : ��x��6815

�S��,��r(n��ng)�I(y��)��Ѹ�ٰl(f��)չ��,��ڭh(hu��n)��ȾӰ푳��й�ˮ��¹��l�l(f��),��o��ˮ��ȫ��ˇ�(y��n)��{��l(f��)ȫ��ĸ߶��P(gu��n)ע[1-2],��ˮ�к��е��Ⱦ��鏊��°��,��ҿ��ǰ�Ѫ��²��֮һ[3]��Ї��ˮ�l(w��i)��(bi��o)��(zh��n)��Ҏ(gu��)��,��ˮ�е��ֵ��0.02 mg/L[4],��ԇ��(j��)ˮ��ډA�ԗl��µĿɳ��ԣ��û��W(xu��)��͏��(li��n)�ü��g(sh��)��ˮԴˮ�е��M(j��n)��ȥ��̎��,��ԁ�ˮ�S��(y��ng)��ͻ�l(f��)ˮԴ��Ⱦ�ṩ��g(sh��)��(j��),��

1 ԇ򞲿��

1.1 ԭˮˮ�|(zh��)

�|��ˮԴˮ,��pH ��7.0~7.2��Ȟ�23.4~67.8 NTU,��A�Ȟ�22.3~30.1 mg/L,��1.87~2.31 mg/L��懘�(bi��o)��(zh��n)ԇ��(20 mg/L),��Ƴ�ԇ��ˮ,��

1.2 ��Ҫ��Ŀ��

pH��pH Ӌ��ȣ�ɢ��ȃx,��懣�늸��ϵ��x��w�|(zh��)�V(ICP-MS),��

1.3 ԇ򞷽��

��ȡ1 Lԇ��ˮ��1 L��У��0.1 mol/LHCl ��0.1 mol/LNaOH �A(y��)��{(di��o)��(ji��)pH,��Ͷ�Ӿۺ��Ȼ��X��,��o��30 min ��ȡ��Һ��ICP-MS �y��ˮ懝��,�,��^�̲��(li��n)��ԇ򞔇��C(j��)��1��ʾ,��

��1 ��

Tab.1 Mechanical process of coagulation and sedimentation

2.1 pH ��̎��Ч��Ӱ�

�ږ|��ԭˮ�м��懘�(bi��o)��(zh��n)ԇ��,��Ƴɝ�ȷքe��0.04mg/L��0.10 mg/L ��ԇ��ˮ,��{(di��o)��(ji��)pH ��7.0~10.0 ֮�g,��Ͷ��1.2 mg/L �ۺ��Ȼ��X(��Al2O3 Ӌ)��y��ˮ��ʣ��懝��,��Y(ji��)��D1 ��ʾ,��

�D1 pH ��ˮ懝�ȵ�Ӱ�

Fig.1 Influence of pH on nickel concentration in outflow

�ĈD1 ��Կ��S��pH ��,��ˮ��懝�ȳʬF(xi��n)�½��څ��,��ȥ��S��pH ��߶��󡣮�(d��ng)ԭˮ��懝�Ȟ顶��ˮ�l(w��i)��(bi��o)��(zh��n)��ֵ��2 ��r,��Ͷ��1.2 mg/L�ۺ��Ȼ��X,��Ҫ��pH �{(di��o)��(ji��)��10.0��ˮ��ȥ��ֵ��,��ԭˮ懝�Ȟ��ֵ5 ��r,��ʹ�{(di��o)��(ji��)pH ��10.0��ˮ懝��Գ��^��ֵ,��

2.2 ��Ͷ��̎��Ч��Ӱ�

��l��׃��r��,��懵�ȥ��S��pH ��߶��ߡ��pH ��{(di��o)��Խ��Խ�ã��ˮ�S��H��r��f,��pH �{(di��o)��^��,��H��Ч��׃���Ҍ��pH �Ļ��{(di��o)Ҳ�^��y,��ڽ�(j��ng)��(j��)�ͼ��g(sh��)�϶��ǲ��е�,��ˮԴͻ�l(f��)��Ⱦ�¼��У��(y��ng)�C�Ͽ��]pH �ͻ��Ͷ��Ķ��ف��x��ѵ�pH,��ԇ�Y(ji��)��Ļ��A(ch��)��,��x��Ч��^��@��pH(9.0��9.5,��10.0),��{(di��o)��(ji��)�ۺ��Ȼ��XͶ��1.2~3.6 mg/L,��_��ԭˮ��懳��^��ֵ��ͬ��(sh��)�r��Ͷ��,��

2.2.1 pH ��9.0 �r��{(di��o)��(ji��)��Ͷ��

�{(di��o)��(ji��)ԭˮpH ��9.0,��׃�ۺ��Ȼ��X��Ͷ��,��y��ˮ��ʣ��懝�ȣ��Y(ji��)��Ҋ�D2,��

�D2 pH ��9.0 ��ˮ懝��׃��

Fig.2 Variation curve of nickel concentration in outflow when pH is 9.0

�ĈD2 ��Կ��,��ַ��(y��ng)ǰpH ��9.0��ˮ懝��S��Ӷ��,��ȥ��S��Ӷ��,��(d��ng)ԭˮ��懝�Ȟ��ֵ��2 ��r��Ͷ��1.8 mg/L�ۺ��Ȼ��X��Ԍ��ˮ��懝�Ƚ��ֵ��,��(d��ng)ԭˮ��懝�Ȟ��ֵ��5 ��r,��ӻ��Ͷ��懵�ȥ��߲��@��Ͷ��3.6 mg/L �ۺ��Ȼ��X,��ˮ��懝��0.0448 mg/L,��

2.2.2 pH ��9.5 �r��{(di��o)��(ji��)��Ͷ��

�{(di��o)��(ji��)ԭˮpH ��9.5,��׃�ۺ��Ȼ��X��Ͷ��,��y��ˮ��ʣ��懝�ȣ��Y(ji��)��Ҋ�D3,��

�D3 pH ��9.5 ��ˮ懝��׃��

Fig.3 Variation curve of nickel concentration in outflow when pH is 9.5

�ĈD3 ��Կ��,��(y��ng)ǰpH ��9.5��ˮ懝��S��Ӷ��,��(d��ng)ԭˮ��懝�Ȟ��ֵ��2 ��r,��Ͷ��1.8 mg/L �ۺ��Ȼ��X��Ԍ��ˮ��懝�Ƚ��ֵ��¡��(d��ng)ԭˮ��懝�Ȟ��ֵ��5 ��r��ӻ��Ͷ��懵�ȥ��߲��@,��Ͷ��3.6 mg/L �ۺ��Ȼ��X,��ˮ��懝��0.02468 mg/L��

2.2.3 pH ��10.0 �r,��{(di��o)��(ji��)��Ͷ��

�{(di��o)��(ji��)ԭˮpH ��10.0,��׃�ۺ��Ȼ��X��Ͷ��y��ˮ��ʣ��懝��,��Y(ji��)��Ҋ�D4,��

�D4 pH ��10.0 ��ˮ懝��׃��

Fig.4 Variation curve of nickel concentration in outflow when pH is 10.0

�ĈD4 ��Կ��(y��ng)ǰpH ��10.0,��(d��ng)ԭˮ��懝�Ȟ��ֵ��5 ��r,��Ͷ��2.4 mg/L �ۺ��Ȼ��X��Ԍ��ˮ��懝�Ƚ��ֵ��¡�

3 �Y(ji��)Փ

��û��W(xu��)��͏��(li��n)�ü��g(sh��)��Чȥ��ˮԴˮ�е��,��{(di��o)��(ji��)ԭˮpH ��9.0,��Ͷ��1.8 mg/L �ۺ��Ȼ��X��Ԍ��ֵ��2 ��ȥ��_(d��)��(bi��o),��Ҫʹ��ֵ��5 ��ȥ��_(d��)��(bi��o),��Ҫ�{(di��o)��(ji��)ԭˮpH ��10.0��Ͷ��2.4 mg/L �ۺ��Ȼ��X,��

��īI(xi��n)

[1]�޸��x��й�ˮ��(y��ng)��ͻ�l(f��)��ˮ�|(zh��)��Ⱦ��ɼ��g(sh��)��}��˼��[J]��oˮ��ˮ,��2009��35(8)��1-3��

[2]��,��Q��ͻ�l(f��)��ˮ��Ⱦ�¼��軯��ȥ��о�[J]��ˮ̎��g(sh��),��2009��35(3)��27-29��

[3]��,��O�P��c��w��[J]��Ԫ��t(y��)�W(xu��),��2006��13(3)��39-42��

[4]��A��񹲺͇��l(w��i)��ˮ�l(w��i)��(bi��o)��(zh��n)[S]��2006��4��

(��īI(xi��n)��ʽ��,��С��W(xu��)��ȥ��ˮ��Ⱦ��ԇ��о�[J]��V�|��,��2011��38(4)��81-82)

[��ߺ��] ��(1978-),��,��ˣ��Tʿ,��̎�,��Ҫ�о��oˮ̎��g(sh��)��ˮ�|(zh��)�O(ji��n)�y��

����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,��