污水的化学处理3.4氧化还原法3.5电解讲解

DBS
TOC 20.52.0 mg/L
TOC 61.3%
UV/O3
TOC 28.11.8
mg/L
ZrO2/Fe3+/UV/H2O2
TOC 18.01.5 mg/L
LAS
TOC 84.3%
TOC 72.6%
TOC 15.2-0.6
W
100 56 95.4 99.2 138 156.8 163.4 165
2
CN CNO pH=10115CNO-
CN-1/1000
CNO- NH3()N2(pH88.5)1
10
TNT
pH
2.3
O3 -112.52.144kgm3 1 21025 3 4pH 5
E
E
RT nF
ln
CH 4 CH 3OH CH 2O HCOOH CO2 H 2O
()
("
")() ()
2
(1); (2); (3); (4); (5)pH
H+OH-; ;
O2
(1)
Fe(OH)3MnO2
2Fe 2 1/ 2O2 5H 2O 2FeOH 3 4H
4Fe 2 8HCO3 O2 2H 2O 4FeOH 3 8CO2
lmg/L Fe2+O.143mgL O2
MnO2Mn2+
Mn 2 O2 MnO2 s
Mn 2 MnO2 s Mn 2 MnO2 s
O3
2.3.5
(1) O3/H2O2 (2) O3/UV (3) O3/US (4) 1)
Fe2+Mn2+ Ni2+Co2+Cd2+Cu2+Ag+ Cr3+Zn2+ 2)
(5) O3/BAF (6) BAC (7 )
2.4
2.4.1 KMnO4,,pH
----
()
NaClO
Fenton
1 2 3 4
ຫໍສະໝຸດ Baidu 1
1.1
1.2. : (COD); (CN-S2-Fe2+Mn2+) : ()
1.3. :
:
1.4. --
--
1.5
1----( )
E-;E0--;R--;T-- ;n--;F--;
,,,,, ;,,.
-1
Cl2 CaCl(OCl)
NaOCl Ca(OCl)2
NH2Cl NaClO2
Cl2O NHCl2
71 127 74.5 143 51.5 90.5 87 86
molCl2/mol
1 1 2 1 2() 2 2
W
100 56 47.7 49.6 69 39.2 81.7 82.5
2.6.1
1894FentonFe2+H2O2�OH �OH Fenton
1935WeissO3OH��OH
1948TaubeBrayH2O2 HO2��OHO3H2O2
2070PrengleCary �OH
20
Hoign� �OH�OH
�OH
2.6.2 �OH
37mg/L
530min
pH
2.3.1 ,,
2.3.2-- ,,,.
(1):. (2):,,. (3):
2.3.3----
� � �
(1)-- .
(2)-- , .
:
2.3.4
BODCOD
� � � �
COD
O.51mg/L1.52h O.045O.45mgO32min
3.06
O3
O3+2H++2eO2+H2O
2.07
H2O2
H2O2+2H++2e2H2O
1.77
HClO
2HClO+2H++2e2Cl-+2H2O 1.63
Cl2
Cl2+2e2Cl-
1.358
3
3
AOPs
[710]
AOPs
COD 680400 mg/L AOX 31 mg/L
PVA
TOC 95.6%
1 �OH�OH
2 O3�OH [23]
�OH O3 (mol-1�L�s-1) (mol-1�L�s-1)
0.04
(2.7170)�108
4.4�104
8.1�109
7.9
2.4�109
0.063
(45)�109
PCB
<0.9
(4.38)�109
2
�OH
1 [2]
(V)
�OH
�OH+H++eH2O
S 2
0. 508 S
0.74
S
2
O 2 3
0.58 SO32
0.98 SO42
(2)
---- ()
: 8090
2HS 2O2 S2O32 H 2O
2S 2
2O2
H2O
S
2
O 2 3
2OH
S
2
O 2 3
2O2
2OH
2SO42
H2O
----(,,) ; ; ;
8090 2.5m 3m 15 l.5 2.5h
2.1.3
1503500.520MPa
i ii
1 1-25-3-4-6-
7-8-9-10-
----(CWO)---- (200300C)(1.510MPa) () CODTOC (10min2.0h) CO2N2 ,
2.2
2.2.1 ; ; --,
2.2.2 (1):
2
CN-S2-Fe2+Mn2+
Cl2O2
O3
Cl+Cl-
MnO4-Mn7+Mn2+Fe3+ Fe2+
2
2.1 () 2.2 2.3 2.4 2.5 2.6
2.1()
2.1.1
1
2
--pH
--. -- (
) ""--(200300)(315MPa) .
2.1.2 pH
2.4.2 H2SCN()()
2.4.3 :
() ( ) :,
2.4.4
2.5
2.5.1
2.5.2 (1) (2)(O2)
2.5.3
2.6
advanced oxidation processes, AOPs) �OH �OH
�OHAOPs 10s O3�OH H2O2 �OH Fenton�OH
: Mn 2 MnO2 s O2 2MnO2
() CO2pH Mn2+MnO2
0.62mm 0.71.0m 1020m/h
Fe2+10mg/LMn2+1.5mg/LpH6
(2)
()S2HS-H2S
H2S
E 0.14 S
0.5
S
2
O 2 3
0.4 H 2 SO3
0.17 H 2 SO4