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ժҪ��B��MAP��@�V��̎��ߝ�Ȱ��Uˮ�ļ��g(sh��),��о��ˎ��,��pH ֵ��ȥ��ʵ�Ӱ �,��ԇ�Y(ji��)��ڰ��Uˮ��Ͷ��MgCl2 ·6H2O ��Na3PO4 ·12H2O ˎ��,��Mg2 + : PO4 3 - : NH4 + Ħ��Ȟ�1 . 5 : 0 .9 : 1,��pH ֵ��8 .5 �� 9 .5 �ėl��£�ԭˮ�İ��ȿ��2000 mg / L ��15 mg / L,��ȥ��_95%��,��

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MAP��Magnesium Ammonium Phosphate��W��1�ݵĻ� ��ԭ��򺬰��ďUˮ��V�}��}�� MAP��@�V��,��a(ch��n)��Ļ��W��ʽ��MgNH4PO4 ·6H2O,�� Q�B�Sʯ��о��,��MAP ��Ч��ȥ��ʏS�Uˮ�� ĸ߰��,��ԇ��B��򵪷ʏUˮ��Ͷ�Ӻ�Mg2 + �� PO4 3 - �x�ӵ�ˎ��ԇ��^�̣��鵪�ʏUˮ�ߝ�Ȱ�� A̎�톖�}�ṩ��һ�N��еķ��,��

1 ԇ��^�̺͙C��

1 .1 �Uˮ��Դ�c��|(zh��)

ԇ��ÏUˮȡ��ĳ��ʏS�Uˮ,��ԭˮ��Ȟ�2000 mg / L��pH ֵ��9 .0��pH ��(sh��)�֜y��x�y�ã�,��

1 .2 ԇ��Ãx��,��ˎƷ��

ԇ�x��1 000 ml ��ɼӟ��pH��(sh��)�֜y��x,��ԇ�ˎ��MgCl2 ·6H2O,��Na3PO4 ·12H2O�� ˎ��һ��Ⱥ��Uˮ��,��20min,�� ͨ�^��Һ��x��y��Һ��ʣ�ఱ��,��׵� ��,��Ç��Ҙ˜ʷ��

1 .3 ��C��

�򰱵��Uˮ��Ͷ��}��V�},��l(f��)��Ҫ��W��£�

�ɷ��ʽ��2��,��3��֪��ԇ��^��ˮ�ӵ�pH ֵ��½�,��μ�NaOH ��Һ�ɴ��M��2��,��3��ʽ��M�С�

2 ԇ�Y(ji��)��ӑՓ

2.1 ��pH ֵ�Ͱ��ȥ��ʵ�Ӱ�

MAP �ǉA��},��ډA�ԗl��ܽ��SpH ֵ��߶�� ,��ҺpH ֵ> 9.5 �r��Һ�а��x��׃�ɚ�B(t��i)��]�l(f��),��ͬ �r,��Һ�е�Mg2 + �cOH- ��Mg��OH��2 ��,��ҺpH ֵ> 11 �r,��߀��ܽ�ȸ��͵�Mg��PO4 ��3 ��,��ҺpH ֵ< 7 �r��Һ�е�PO4 3 - ��ȵ�,��ڷ��1��ʽ��M��,��ˣ�� Ʒ��pH ֵ��7.5 �� 10 ֮�g,��ӑՓ��ȥ��ʵ�Ӱ�,��

ԇ򞰴��Ͷ��ˎ��ˮ�ӵ�pH ֵ��ԭ��9.0 ��7 ��,��D1 �@ʾ��S��}Ͷ�ӵ�Ħ��,��ˮ��pH ֵ��׃ ��˕r��Һ�İ��Ȟ�750 mg / L,��Mg2 + : NH4 + : PO4 3 - �ı��1.5:1:0.9,��NaOH ��Һ�{(di��o)��(ji��)ˮ��pH ֵ��y�� ͬ��(sh��)ֵ�µİ��,��ɱ�1 ��pH ֵ��9.0 ��ҕr,��ȥ ��ʿ��_98%��5 mg / L ��,��

�D1 ��ˎ��ˮ�ӵ�pH ֵ��׃��

��1 pH ֵ��ȥ��ʼ��Ӱ�

2.2 ˎ��Ȍ��ȥ��ʵ�Ӱ�

�ɷ��1��ʽ��֪,��MgNH4PO4 ·6H2O��Փ��Mg2 + : NH4 + :PO4 3 - ��Ħ��ȑ��1:1:1,��(j��)ͬ�x��Ч��,��Mg2 + �� PO4 3 - ��,��ɴ��M��1��ʽ��M�ж��߰��ȥ��,�� (j��ng)�о��Լ�ԇ��NH4 + : PO4 3 - ��Ħ��< 1,��mȻ��һ ��̶��˰��ȥ��,��Ě��s��_�װ� mg / L��µ��Ⱦ,��

��,��_��ԇ�Ч��a(ch��n)��Ⱦ��(j��)�� Wԭ��,��ڽ��}Ͷ�ӱ��ͬ�r��V�}��Ͷ��,��

��ȹ̶�Mg2 + :NH4 + ��Ħ��Ȟ�1.5:1��׃��}��Ͷ�� ,��о��ȥ��ʵ�׃��,��ԇ�Y(ji��)��2 ��ʾ,��ԇ�ˎ�� MgCl2 ·6H2O��Na3PO4 ·12H2O,��pH ֵ��9.0,��

��2 ��׃��}Ͷ�ӱ��Uˮ��ȥ��ʼ��Ӱ�

�ɱ�2 ֪��}��Ȟ�0.8 ��0.9 �r,��ȥ��ʷ� �e��96.25%��99.25%,��ˮ�İ��ȷքe��75 mg / L ��15 mg / L��քe��9.2 mg / L ��19.8 mg / L,��

�̶�PO4 3 - :NH4 + ��Ħ��Ȟ�0.9:1,��׃�V�}��Ͷ�� Ʒ��pH ֵ��9.0,��о��׃�V�}��Ͷ��ȥ��Ӱ �,��ԇ�Y(ji��)��3 ��ʾ��

ԇ�Y(ji��)��,��V�}��Ͷ��,��Ч��߰��ȥ ��ʡ��V�}��Ͷ�ӱ��1.5 �r,��Uˮ�İ��ȿ��Խ�� 100 mg / L ��,��

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�ɷ��ʽ�Լ�ԇ�Y(ji��)��֪,��a(ch��n)��Ļ��W��ʽ�� MgNH4PO4 ·6H2O,��w�ʰ�ɫ��w��ĩ���1.7,��,�� ډA��MgNH4PO4 ·6H2O ��245,��Փ��ÿ̎��1 kg �� ,��Ҫ1.71 kg �V��2.21 kg ��,��Լ�һ��NaOH ��Һ,��ͬ�r ��17.5 kgMAP ��ᰱ�V��ֲ��L�� N,��P,��Mg �I�B(y��ng)Ԫ�أ��B(y��ng)�ֱ��ܷʵ�ጷ��,�� ʸ�,��ጷ�ʹ�ã��F(xi��n)�Ɵ��r��о��Y�� @ʾ,��MAP ��Փ�r��198 �� 330 ��Ԫ/ ��,��_�l(f��)MAP ��ጷ� ��^�ߵĽ�(j��ng)��rֵ��ͬ�r߀��Խ��͸ߝ�Ȱ��Uˮ��̎��M ��,��

4 �Y(ji��)Փ

��1��о��ǻ��ʏS��ʏUˮ,��ȸ��_2 000 mg / L��һ��﷨�y�Խ��,��Ҹߝ�Ȱ��ďUˮ߀��ֱ��Ӱ ��b�õ��\�У�4��,��ñ��о��Ļ��W�� MgNH4PO4 ·6H2O ��,��Uˮ�а��ȥ��ʸ��_95%��,�� _��A̎��Ŀ�ģ��m(x��)��̎��춨�˻��A(ch��),��

��2��о��,��MgCl2 ·6H2O��Na3PO4 ·12H2O ̎��ԓ�U ˮ,��Mg2 + :NH4 + :PO4 3 - ��Ħ��Ȟ�1.5:1:0.9,��pH ֵ��9.0 ��ң� ԭˮ�еİ��ȿ��2 000 mg / L ��15 mg / L,�� 20 mg / L,��

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