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1.1��Ȼ�h(hu��n)��śr

�ϲ��е�̎��򁆟Ꭷ��,�ܖ|��LӰ�,�γ��ˁ��Ꭷ��L��,��Ѓȟ��S��,��ˮ��,��ճ��,��L��ƥ��^��,��r(n��ng)�I(y��)��a(ch��n)�ṩ��l��,��~��֮�l(xi��ng)��u,��,��ÿ�꼾�L��M��t�粻ͬ,��׃��^��,��ˮ�ֲ��,�ߜظɺ�,�͜��亦�ͱ��靳�Ț��ĺ��l(f��)��^�l��,�o�˂��a(ch��n)����Ӱ�,��

1.2��ˮ̎��S��OҎ(gu��)ģ

�OӋ��ˮ̎��S��̎��ˮ��60000m3/d,��ˮ̎��Sռ��e�s��260m×280m,�G��eռȫ�S��e��1/5��,һ��Խ��O��ɡ�

1.3��ˮ̎��S�M��ˮˮ�|

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ͨ�^��^,��_��]��ǿ��Ϲ�ˇ,ԭ��c:
(1)̎��̺��,��,��M��^ʡ;
(2)̎��Ч��,��^��(w��n)��Ó��׹��;
(3)��ߝ�ȹ��I(y��)�Uˮ�кܴ��ϡ��;
(4)�п��_��ؓ�ɵ��;
(5)��̎��׽��ЙC��,��;
(6)��g��M��,��S�o�^��;
(7)��ȹ��̌��^��,��׫@�ù��̹��(j��ng)�,��

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3.1��A��ƽ��Ӌ��

(1)��OӋ�ĳ�ˮBOD5��20mg/L,̎��ˮ�з��ܽ��BOD5ֵ��й�ʽ��BOD5f=0.7×Ce×1.42(1-e-0.23×5)=0.7×20×1.42×(1-e-0.23×5)=13.6mg/L

ʽ��:Ce———��ˮBOD5��(mg/L),��̎��ˮ�е��ܽ��BOD5��20-13.6=6.4mg/L,��

(2)��g20d,�tÿ�M��ծa(ch��n)��(j��)��ʽ�ɵ�:

aQLr1+btm=0.6×20000×(200-6.4)1000×(1+0.06×20)=1056.0kg/d

ʽ��:Q��OӋ��(m3/d);
     a��Lϵ��(sh��)(kg/kg),һ��0.5��0.7,�@��ȡ0.6;
     b��(1/d),һ��0.04��0.1,�@��ȡ0.06;
     Lr��(L0-Le)ȥ��BOD5��(mg/L);
     tm��g(d),10d��30d;�@��ȡ20d;
     L0��MˮBOD5��(mg/L);
     Le��ˮ�ܽ��BOD5��(mg/L)��

��ծa(ch��n)��:1056×3=3168.0kg/d,һ��r��,��12.4%�鵪,��Ƶ��ڿ��Pʽ��(TKN)��úϳɲ��֞�:12.4%×3168=392.8kg/d,TKN��392.83×1000/60000=6.6mg/L
��ںϳ�;

��߀ԭ��:NO3-N=21.45-10=11.45mg/L

��:NH3-N=30-6.6-2=21.4mg/L,(NO3-N<10mg/L,NH3-N<2.0mg/L),��

(3)һ��ȥ��BOD5��a(ch��n)��ĉA��(��CaCO3Ӌ)�s��1mg�A��/ȥ��1mgBOD5,�Mˮ�еĉA�Ȟ�280mg/L,��A��һ��7.1mg�A��/mgNH3-N��,߀ԭ��};��a(ch��n)��ĉA��3.0�A��/mgNO3-N߀ԭ,ÿȥ��1mgBOD5�a(ch��n)��0.1mg�A��,��ʣ��A��=280-7.1×21.4+3.0×11.45+0.1×193.6=181.77mg/L

3.2��^(q��)�ݷeӋ��

��NOD=4.6mg/mg,NH3-N��,��2.6mg/mgNO3-N߀ԭ��Ó��:qDN=0.0312kgNO3-N/(kgM2LVSS·d),��

��:μN=[0.47e0.098(T-15)]×[22+100.05×T-1.158]×[22+1.3]=0.209L/d��(T=13.4),��

��Ԍ��H��g:t-∞=10.204=4.8d��

��ð�ȫϵ��(sh��)��3,��OӋ��g=3×4.8=14.4d,��

ԭ�ٶ��g��20d,�t��μN=120=0.05L/d,��

��λ��|��:μ=μN+ba=0.05+0.060.6=0.183kg/(kg·d)��ʽ��:μN��(1/d);

a��Lϵ��(sh��)(kg/kg),һ��0.5��0.7,�@��ȡ0.6;b��(1/d),һ��0.04��0.1,�@��ȡ0.06,��

��ϻ��(MLSS)һ��2000mg/L��6000mg/L,�@��ȡMLSS=4000mg/L,��һ��r��,MLVSS�cMLSS�ı�ֵ�ǹ̶��,��0.75��,�@��ȡ0.75,��MVLSS=0.75×4000=3000mg/L,ÿ�M��MLSS��:214×200000.183×1000=23388kg,��ݷe:VN=233883000×1000=7796m3,ˮ��ͣ��r�g:tN=(779620000)×21=9.4h,3�M��MVLSS��=23388×3=70164kg,3�M��ݷe=7796×3=23388m3,��

3.3��^(q��)�ݷe

12°C�r,��ʞ�:qDN=(0.03FM+0.029)θT-20=(0.03×2004×103×1624+0.029)×1.0812-20=0.02kg/(kg·d)

ʽ��:F��ЙC��ｵ��,��BOD5��(mg/L);
     M��΢��(mg/L);
     F/M��ؓ��,kg2BOD5·(kgMLSS·d)-1;
     θ��Ó��ض��ϵ��(sh��),ȡ1.08��

߀ԭNO3-N�Ŀ��:11.45/1000×60000=687kg,Ó��MLSS=6870.017=40411.8kg,Ó��VDN=40411.82.8=14432.8m3,ÿ��Ó��ݞ�14432.83=4810.9m3,ˮ��ͣ��r�gtDN=14432.8/60000×24=5.8h,��

3.4��Ͽ��ݷe

��ˮ��ͣ��r�gt=tDN+tN=5.8+9.4=15.2h,�cһ��ȡֵ10h��24h֮�gһ��,�,��V=VDN+VN=14432.8+23388=37820.8m3,ÿ�M��ϵĿ��ݞ�37820.8/3=12606.9m3��

3.5��ϵĳߴ�

��4�ȵ�ʽ��,��(j��)��õ��ؚ��O��,��2.5m��8m,��ϲ��ñ��ؚ�C,��ȡ��Чˮ��4.5m,��9m,��t��L��12606.9/4.5×9=311.3m,��
��к��L�Ȟ�23388/3×4.5×9=192.5m,ȱ��L�Ȟ�14432.8/3×4.5×9=118.8m,��̎�L�Ȟ�3×π×9+2×9+π×9×2/2=131.0m,�t�΂�ֱ��L��311.28-131.04/4=45m,��Ͽ��L��45+9+9=63m,��Ȟ�4×9=36m��

4��Y��Z

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��īI:
[1]��R.��U̎��̼��g�փ�(�Uˮ��)[M].��:��W��I(y��)��,2001.
[2]��ӡ,��֥.ˮ̎��̎��փ�[M].��:��W��I(y��)��,2001.
[3]ʷ��.��ˮ̎��O��փ�[M].��:��W��I(y��)��,1999.

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