biogas production in thai
TRANSCRIPT
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(.)
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(Biogas)
(Biogas)
(Anaerobic Digestion)
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3
1(Hydrolysis)
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2(Acidogenesis)
(Volatile acid) (acid former) (Acetic acid) (Propionic acid)
3 (Methanogenesis)
(CH4) (CO2) (H2S)
(N2) (H2)
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50-75
(CO2) 36-39
(H2) (H2S) 1-3
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1
( 21 )
(LPG)0.46 .
0.60
0.55
1.2 kWh
1.5 .
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(Temperature)
3 - Phychrophillic (5-15C)
- Mesophillic
(35-37
C)- Thermophillic (50-55C)
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- (pH) pH 6.5-7.5 5 4.5
(Alkalinity) - 1,000-5,000/ (CaCO3)
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(Volatile Acid)
pH 2,000/ 5,000/
(Nutrients)
COD:N:P 100:2.2:0.4 BOD:N:P 100:1.1:0.2
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(Inhibiting and Toxic Substances)
(Mixing)
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(1) (Floating drum digester)
..2519
http://4.bp.blogspot.com/_AdU3UvQ0iVk/SkzUA36SdDI/AAAAAAAACAY/GMe9WoiwITQ/s1600-h/DSC00015.jpg -
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(2) (Separate Floating drum digester)
. 2
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(3)
. ..2522
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(4) (Fixed dome digester)
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(5) UASB : Up-Flow Anaerobic Sludge Blanket
2 2-5 .
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(6) H-UASB (High suspension solid-Up-Flow Anaerobic
Sludge Blanket)
UASB
Buffer tank PE Buffer tank UASB
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(7) (Plug Flow digester)
Channel digester
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(8) Mini CD ( Mini Channel Digester)
100 ..
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(9) PVC
PVC 8 .. 2 ./
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(10) Covered lagoon
Plug Flow
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(11) . 1
10 ../
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(12) . 2
2 ../
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(1)
Upflow Anaerobic Sludge Blanket (UASB)
2 (Sludge Bed) 2 SludgeBlanket (Gas-Solid Separator)
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(2) (Anaerobic Fixed Film, AFF)
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(3) Completely Stirred Tank Reactor (CSTR)
(Mixing System) (HRT)
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(4) Anaerobic Baffle Reactor (ABR)
0.2-0.4 /
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(5) Modified covered Lagoon (MCL)
High Density Polyethylene (HDPE) (PVC)
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- Hot Oil Burner StreamBoiler
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()
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- - VSPP -
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BGG. = Q*COD/1000*Eff. COD removed*Gas Yield
BGG. ( Biogas Generate) = (./)Q = (/)
COD = COD (./)
Efficiency COD removed = COD (%)
1,000 = (1,000 .) ..Gas yield = COD
( 0.35 ./. COD/)
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. 10 ./ COD9,000 ./ COD 80% Q = 10 ./COD = 9,000 ./
Eff. COD removed = 80 % BGG. = 10*9,000/1,0000.80 *0.35 ./ 25.20 . / 60 % 25.20/0.60 42 . /
1 . 200 10,000 (10..) = 50 .1. 0.85 .. 50 . = 50*0.85 = 42.50./
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(.)
(..)
12 13.5 .2
30 50 Fixed dome60 70 .1
60 100 Fixed dome
60 100 CD junior
120 200 CDUA
180 300 CDUA
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BGG. = Q*COD/1000*Eff. COD removed*Gas Yield *%
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Q = 2,000 ../
COD = 18,000 ./
Gas yield = 0.35 ../.COD/
Efficiency COD removed 80%
60%BGG = 2,000*18,000/1000*80/100*0.35/60%
16,800 ../
9,240/
200 / 2,000 ../ COD 18,000 ./ ../
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.. .
(11 ..) 50 . .4 .5 .6
30 .
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3
. .
3 3 200
200 3
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" 5
15.45 . 22 .. ... .. .
5
1 . .
... ...
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" " 200 50 . 3 12 5
..
4
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