Ngày tải lên :
23/04/2013, 20:30
... fY3M=+O-YM]Qy,4OPI,Q=O.1_,--QJ,4Ko,AbOh-0rOPIO0,,4Qj+.1Ka,4.pM
]1H4+_H,E,4f3YM.1O-YM]Qy,4OUCM2F,4B
+l,,ICM-o4+=+KI,423,4-F+O-3T,4VX0Ka,4.[M-OM2R,4T,-+DHHT+
M2Qj,4M01,OL3BT+M2Qj,4KM2JM-1,-.Y,K[O-3,4OPIM01,,-U,]0R+.1KQyO
M01,M-o4+=+q3I,MUH!O,4.=+A,ã,4]/,OPIM2X+KYM4UC-+l3b,4,-1hG,-.1
f3YM-+l,,41CHaM,-+[3]M-P,4M2/,ML,40,V_0.lM2X+KYMh-+OXOM+IOO
MGHBHM20,4h-3,4O_,-O-3,4KãOPIM-o4+=+HT+M2Qj,4?+lMIHO-ã,4MI
f3W,4OY>OnOVai0O-ã,4MIKI,4M20,4M-j+h>-XMM2+k,OT,4,4-+l>-ãI!-+l,
KR+-ãI!KTM-m-ãI.1AME,4HpMKaiU,AWq3X,-I,-JOXOh-3KTM-mB
+hH.=+A>-XMM2+k,Kã]1.Y,K[T,-+DHHT+M2Qj,4i0OXO,43F,2XO
M-_+!,Q=OM-_+!h-GM-_+4UC2IBYMO_OXO,43F,M-_+,ã+M2/,K[3O-bIK,4M20,4
,ãV+oMVI0,-+/3]0R+O-YMKaO-R+BXO,43F,M-_+KQyOKQI2IHT+M2Qj,4-L3-oM
K[3O-QIKQyOft]u-0\OH=+ft]uAsVai0.pC4UC2IT,-+DHHT+M2Qj,4K\O
V+lM]1HT+M2Qj,4,Q=OB-,4,43F,,Q=OM-_+!,Q=OM-_+MOXO,41,-OT,4
,4-+l>H1M20,4KãOãO-bI2YM,-+[3O-YMKaO-R+MKãK+.10OW,4!2,-!AT,4!
-F]1HT,-+DHOXO,43F,,Q=O]1O-PCo3B-,4O-YM,1CK+.10OsM-kMO0,
KQj,4E,3W,4!-T-Y>O-ã,4MGO-]3M20,4OsM-kO0,,4Qj+.1A+,-.pM4UC2I
,-,4MXO-R+.TO,4,43C-+kHB?Y,K[]1]1HM-o,10KkKX,-4+XHbOKaT
,-+DHOã,4,-QfXOKm,--1H]Qy,4OPIOXOO-YMKaO-R+M20,4,Q=OM-_+M2Q=Oh-+
KQI.10HT+M2Qj,4BM2Q=OM-OMoKãO-ã,4dHf+,O-Z,K[M1+Kho sỏt tỡnh hỡnh
ụ nhim ngun nc, xỏc nh mt số chỉ tiêu trong nước thải của quá trình sản
xuất cụng nghipãB[M1+,1Cf+,K[Op>Ko,.Y,K[T,-+DH,43F,,Q=O.1OXO
>-Qs,4>-X>ft]uOã,4,-QOXO>-Qs,4>-X>fXOKm,-HaMAWO-zM+/3q3I,M2Z,4
M20,4,Q=OM-_+B
... khỏc
lM-W,4h/,-2RO-h-T,4KQyO,R0.Miã,Ko,MGO-MnHaMh-W+]Qy,4]=,
OXO.pMO-YM-3OsM,Q=OM-_+!2XOM-_+4UCVF+]e,4.1_,--QJ,4Ko,.+lOM+/3
M-0XMOPIiN,4,Q=OB
XOV+O-T,2XOh-T,4KRMC/3OL3hM-3pM!,Q=O2z2IM2XOM-YH.10
HRO-,Q=O,4LH-0\OO-0O-_CM21,M2/,H\MKYM.10h/,-2RO-B
2I,4;;
Hỡnh 6. Nguồn nước bị ô nhiễm do hoạt động
nông nghiệp
`B;B Ch tiờu Amonium
4.6.1. í ngha mụi trng
>-U,-PCOPI2XOM-_+!OXOO-YM-3OsOãM20,4,Q=OM-_+A+,--0RM!,Q=O
M-_+OT,4,4-+l>MR0M-1,-OXOA_,>-H(H0,+3HB-+l,i+l,OPI(H0,+3H]1
O-YMO-zM-mKk,-p,V+oMM2R,4M-X+,-+DHV,OPI,43F,,Q=OB
4.6.2. ...
.1
`
7x
-L3,-QOãH\MM20,4OXO]0R+,Q=OM-+/,,-+/,Bãh-T,4M-k
-+l,MG,-Ob,4Oã,4,-Qh-T,44UCMXO-R+M20,4.+lOAtin,4B3C,-+/,,o3OXO
H3W+,1Cq3XOI0M-S4UC2IX>A3YMOI0M20,4q3XM2S,-Atin,4,F+-s+.S,ã]1
,-,4-y>O-YMiDMI,M20,4,Q=OB\Mh-XO!_,--QJ,4Ko,A+,--0RMOPIO0,
,4Qj+!Ko,AAW,4OPIKa,4^M-O.pMM20,4,Q=Oh-+-1H]Qy,4q3XOI0B
;B`B:B Cỏc mui St (Fe
2+
, Fe
3+
)
2I,46
Hỡnh 4. Mt trm xử lý nước thải
M-1,->-W1a+!Mw,4]Qy,4,Q=OM-_+OPIM-1,->-W]/,M=+:55B555x
`55B555H
:
ã,41C-+l,H=+O-zOã9ã:;Vl,-.+l,Oã-lM-W,4ft]u,Q=OM-_+!
O-+oH79]Qy,4,Q=OM-_+Vl,-.+l,:gã`55OsAJA_,f3YMOãft]u,Q=OM-_+
]Qy,42XOM-_+A+,--0R+O-QIKQyOM-340Hh-0_,4;B755H
:
ã,41CKI,4f_.10OXO
h-3KYM.d,OXO-F!h/,-!HQs,4M20,4,a+M-1,-O-zAW}@!0fC-01MI,!OXO
O-YM
`
!
7
x
!
:
x
JOXOAT,4!-F!HQs,4,a+M-1,-K[3.QyMq3Xq3CKm,-O-0
>->JM-1,->-WF-G+,-M-S]Qy,42XOM-_+]/,M=+4L,`B555MY,ã,41CO-zOã
7`ã;`7OsAJCMo]=,]1Oãft]u,Q=OM-_+h-0_,4:B555OsAJA_,f3YM4UCT
,-+DHM-3aOi+l,>-_+i+ij+B
-T,4O-zJ1a+!M-1,->-WF-G+,-H1JOXOKTM-mh-XO,-Q_+
-N,4!3o!1Ă,4!IHm,-!_+@Qs,4~,Q=OM-_+A+,--0RMOã,4h-T,4
KQyOft]uKaT,-+DH,43F,,Q=O,s+M+o>,-p,,Q=OM-_+K[3.QyMq3XM+k3
O-3,O-0>->{|!OXOM-T,4AWO-YM]s]t,4{|!}@@TfC-01MI,
{@|K[3.QyMM9x;5]L,!M-pHO-G75]L,B?[MS,-M2R,4T,-+DH,Q=OJ
,T,4M-T,.1h-3.OA_,f3YM,T,4,4-+l>!-+l,,IC?+lMIHOã4L,8giU,AW
KI,4A+,-AW,4J,T,4M-T,]1,s+OsAJ-RML,4ON,]RO-p3!>-L,]=,OXOO-YMM-_+
OPIO0,,4Qj+.14+IAãOh-T,4KQyOft]u,/,M-YHf3W,4KYM-0\OVm2tIM2T+!
]1HO-0MS,-M2R,4T,-+DH,43F,,Q=O.[H\M-3Os.1.+A+,-.pM,41CO1,4
OI0B-d0VX0OX0OPI}aT,4,4-+l>.1-XMM2+k,,T,4M-T,!AW.+h-3,dOI
O0]+c02HM23,4VS,-V+o,Kw+M;B955x:B955ã;55H]JOXO.,4.d,AT,4+[,
.1AT,4p3!ME,4]/,M=+:655x;7B955ã;55<JOXOh/,-MQ=+M+/3B
20,4A_,f3YM,T,4,4-+l>!i0]RHin,4OXO]0R+M-3WOV_0.lM-O.pM!OXO
,43F,,Q=OJAT,4!-F!h/,-!HQs,4VmT,-+DH!_,--QJ,4]=,Ko,HT+M2Qj,4
,Q=O.1AbOh-0r,-U,iU,B
-d0M-W,4h/OPI}a-3ãA_,!Mw,4i+l,MGO-H\M,Q=OAtin,4O-0,3T+
M2F,4M-3ãA_,Ko,,EH755;OPIO_,Q=O]189;Bvvv-IB@0,3T+M2F,4M-3ãA_,F
RM!M-+o3q3C-0RO-!h-T,4M3U,M-d0q3CM2S,-hM-3pM,/,K4UC,-+[3MXOKa,4
M+/3OOM=+HT+M2Qj,4,Q=OB,4.=+.+lOAtin,4,-+[3.1h-T,4Kã,4OXO-
OXO]0R+-0XO-YMM20,4,3T+M2F,4M-3ãA_,!M-SOXOM-bOE,iQ]e,4f3W,4KXCI0!
-F!]N,4AT,4]1HO-0HT+M2Qj,4,Q=OVmT,-+DHOXOO-YM-3Os!]1H>-XMM2+k,
HaMAW]01+A+,-.pM4UCVl,-.1f3YM-+l,HaMAWM_0KaOM-pHO-GKOãiY3-+l3
f3YM-+l,M-3ãM2+[3KJHaMAW.,4.d,V+k,?+lMIHB
ã,-+[3,43C/,,-U,h-XO-q3I,.1O-Pq3I,iã,Ko,MS,-M2R,4T,-+DH
HT+M2Qj,4,Q=O!,-QA4+IME,4iU,AW!H\MM2X+OPIq3XM2S,-OT,4,4-+l>-0X!
-+l,KR+-0X!OsAJ-RML,4Co3hH!]RO-p3,-p,M-bOOPI,4Qj+iU,.[.Y,K[
2I,4;`
...