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ANAEROBIC CO-DIGESTION

OF FOOD WASTES AND

SLUDGE WITH SEWAGE

HO CHI MINH UNIVERSITY OF TECHNOLOGYFACULTY OF ENVIRONMENT AND RESOURCES

HO CHI MINH UNIVERSITY OF TECHNOLOGYFACULTY OF ENVIRONMENT AND RESOURCES

Date : January 2015

Prof.Dr. Nguyen Phuoc DanDr. Vo Thanh Hang

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CONTENT

1. OVERVIEW OF FOODWASTE AND SLUDGE OF HO CHI MINH CITY

1.1. Ho Chi Minh city

1.2. Overview of Foodwaste and Sludge

2. ANLYTICAL METHODS

3. EXPERIMENT

3.1. Input

3.2. Date Results

4. CONCLUSIONS

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3

OVERVIEW

OF FOODWASTEand SLUDGE of HO CHI

MINH CITY

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OVERVIEW OF FOODWASTE AND SLUDGE OF

HO CHI MINH CITY

7521.100

7681.700

7818.200Population (million.persons)

2011

7.5 milion people

2012

7.6 milion people

2013

7.82 milion people

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2011 2012 20130

10000

20000

30000

40000

50000

60000

Waste Volume of Food Waste and Sluge in Ho Chi Minh city

waste volume of FoodWaste (m3/year)

waste volume of Sludge (m3/year)

m3/Year

VERVIEW OF FOODWASTE AND SLUDGE OF

HO CHI MINH CITY

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Characteristics of Foodwaste and Sludge of Ho Chi Minh city ( 2013 )

ParameterValue

Foodwaste Sludge

waste volume (m3year) !30"001 #$"0$3

%&'# (gyear) !2"!*3 #3"+!

,SS (gyear) 1"!3# 12#"0+1

,ot - (gyear) "32! 21"10+

,ot . (gyear) +!! $"#*!

C&' (gyear) 2!#"3++ 31"3$

,he methane yields (m3year) 22"#22 110"*23

OVERVIEW OF FOODWASTE AND SLUDGE OF

HO CHI MINH CITY

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ANLYTICAL METHODS

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Analytical method and instruments

/tems nalytical methods and instruments

pH pH meter (Orion model 370)

TS/VS Gelman Type !" glass #i$er Filter

T%& 'aro ! %elda*l 'et*od

mmonia Titrimetri 'et*od

+O, Closed Reflux; Titrimetric Method

TP/SP Vanadol ! moly$dop*osp*ori aid olorimetri

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EXPERIMENT

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SEWGE

INPUT

FOOD WASTESCanteen Bach Khoa

university.

SLUDGEBnh Hng Factory

SEWAGE

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EXPERIMENT MODEL

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'SS -.&+"

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MASS BALANCE OF MH1

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MASS BALANCE OF MH2:

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,T" "S.TS

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,T" "S.TS

OF 'H1

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Temp out-door : 26.00C

Temp reactor: 28.40C

pH eff: 7.12

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TSin of MH1: 27080 mg/L (6 g/D)

TSeff of MH1: 8925mg/L (1.7g/D)

%TS Removal average: 71.6 %/D

VSin of MH1: 18742 mg/L (4.27 g/D)

VSeff of MH1: 5906 mg/L (1.18 g/D)

%VS Removal average: 72.36 %/D

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22

TCOD in: 52658 mg/L (11.8 g/d)

SCOD in: 36278 mg/L (9.1 g/d)

TCOD eff: 22626 mg/L (4.5g/day)

SCOD eff: 15530 mg/L (3.1g/day)

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SCOD pro: 5.06 g/day

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24

VFAs eff: 2745 mg/L (0.549 g/day)

VFAs/SCODprof : 8.8

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TKNin of MH1: 1129 mg/L (0.254 g/D)

TKNeff of MH1: 685 mg/L (0.137g/D)

%TKN Removal average: 45.5%

Its a high rate

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26Amoni in of MH1: 133 mg/L (0.03 g/D)

Amoni eff of MH1: 175 mg/L (0.035 g/D)

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TPin of MH1: 324 mg/L (0.073 g/D)

TPeff of MH1: 100 mg/L (0.02 g/D)

%TP Removal average: 73%/D

Its a high rate

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pH eff: 6.99

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TS in: 27566 mg/L (6.2 g/D)

TS eff: 7840 mg/L (1.5 g/D)

%TS removal 75.8 %/D

VS in: 22217 mg/L (4.9 g/D)

VS eff: 5299mg/L (1.05 g/D)

%VS removal 78.5 %/D

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31TCOD in 48332 mg/L (10.8 g/d)

SOCD in 34498 mg/L (7.76 g/d)

TCOD eff: 15041 mg/L (3 g/d)

SCOD eff: 8709 mg/L (1.74 g/d)

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32

VFAs eff: 1600 mg/L (0.32 g/day)

VFAs/SCODprof : 5

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33SCOD pro: 7.87 g/day

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TKN in: 1420 mg/L (0.32 g/d)

TKN eff: 650 mg/L (0.13 g/d)

%TKN Remove: 57%/d

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Amonia in: 129 mg/L (0.029 g/d)

Amonia eff : 191 mg/L (0.0383 g/d)

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TP in: 13.3 mg/L (0.003 g/d)

TP eff: 5 mg/L (0.001 g/d)

% TP removal 66 %/d

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DATA RESULT OF MH3

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pH eff: 7.04

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39TS in: 25325 mg/L (5.703 g/day)

TS eff: 7843 mg/L (1.57 g/day)

%TS Removal: 68.96 %/day

VS in: 17624 mg/L (3.97 g/day)

VS eff: 5443 mg/L (1.09 g/day)

%VS Removal: 69.32 % /day

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40TCOD in: 32744 mg/L (7 g/day)

SCOD in: 19556 mg/L (4 g/day)

TCOD eff : 13691 mg/L

(2.74 g/day)

SCOD eff :7437mg/L(1.48

g/day)

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41SCOD pro: 2.92 g/day

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42VFAs eff: 1650 mg/L (0.33 g/day)

VFAs/SCODprof : 8

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43TKN in of MH3: 382 mg/L (0.086 g/day)

TKN eff f MH3: 195 mg/L (0.039 g/day)

%TKN Removal : 54 %/day

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Amoni in of MH3: 58 mg/L (0.013 g/day)

Amoni eff of MH3: 90 mg/L (0.018 g/day)

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45TP in of MH3: 267 mg/L (0.06 g/day)

TP eff average of MH3: 65 mg/L (0.013 g/day)

%TP Removal average: 78%/day

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DATA RESULTS OF MH4

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pH eff: 7.02

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-TS in: 25919 mg/L (5.83 g/d)

-TS eff : 10409 mg/L (2.08 g/d)

% TS Removal: 60.73%/day

-VS in: 18052 mg/L (4.06 g/d)

-VS eff: 6992 mg/L (1.40 g/d)

%VS removal: 61.87 %/day

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49- TKN in: 448 mg/L (0.1009 g/d)-

TKN eff: 226 mg/L (0.0452 g/d)

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50Amonia in: 90 mg/L (0.0204 g/d)

Amonia eff: 150 mg/L (0.03 g/d)

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51% TP removal average 68 %

TP eff average 6 mg/L (0.00114 g/d)

TP in average: 16 mg/L (0.00359 g/d)

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-TCOD in: 39867 mg/L (8.97 g/d)

-TCOD eff: 13500 mg/L (2.7 g/d)

-SCOD in: 28844 mg/L (6.49 g/d)

-SCOD eff: 7500 mg/L (1.5 g/d)

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53SCOD pro: 4.99g/day

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54VFAs eff: 2600 mg/L (0.52 g/day)

VFAs/SCODprof : 7.85

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+O'P"

'H1 2 'H

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VS in 1 = 4.2 < VS in 2 = 4.9 (g/D)

VS eff 1 = 1.1 > VS eff 2 = 1 (g/D)

VS remove 1 = 73.8 < VS remove 2 = 79.5 (%)

SCALE 2 is more effective

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TCOD in 1 = 11.8 > TCOD in 2 = 10.8 (g/d)

TCOD eff 1 = 4.5 > TCOD eff 2 = 3 (g/d)

TCOD remove 1 = 61 < TCOD remove 2 = 73(%)SCALE 2Is more effective

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SCOD in 1 = 8.16 > SCOD in 2 = 7.16 (g/d)

SCOD eff 1 = 3.1 > SCOD eff 2 = 1.7 (g/d)

SCOD remove 1 = 61 < SCOD remove 2 = 76(%)SCALE 2Is more effective

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TS in 1 = 6.09 < TS in 2 = 6.2 g/D

TS eff 1 = 1.78 > TS eff 2 = 1.5 g/D

TS remove 1 =70.7 < TS remove 2 = 75.8 %

SCALE 2 is more effective

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+O'P"

'H3 2 'H4

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TS in 3 = 5.69 < TS in 4 = 5.83 (g/d)

TS eff 3 = 1.5 < TS eff 4 = 2.08 (g/d)

TS remove 3 = 73.63 > TS remove 4 = 64.3(%)SCALE 3Is more effective

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VS in 3 = 3.9 < VS in 4 = 4.06 (g/d)

VS eff 3 = 1.0 < VS eff 4 = 1.4 (g/d)

VS remove 3 = 74.3 > VS remove 4 = 65.5 (%)SCALE 3Is more effective

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TCOD in 3 = 7 < TCOD in 4 = 8.9 (g/d)

TCOD eff 3 = 2.74 > TCOD eff 4 = 2.71(g/d)

TCOD remove 3 = 60 < TCOD remove 4 = 69.6(%)

SCALE 4Is more effective

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SCOD in 3 = 4.4 < SCOD in 4 = 6.4 (g/d)

SCOD eff 3 = 1.5 = SCOD eff 4 = 1.5 (g/d)

SCOD remove 3 = 66 < SCOD remove 4 = 76(%)SCALE 4Is more effective

'H1 'H 'H3 'H4

"##luent "##luent "##luent "##luent

H 7 1 7 0 7 0 7 0

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pH 751 750 750 750

Temp in reator

o+654 653 65 651

TS mg/. 6457 76405 764353 10405

g/d 156 158 158 51

9 remo:al 7057 7457 75; 8453

VS mg/. ;0854 ;65 ;44350 8350

g/d 15 151 151 154

9 remo:al 750 7656 75; 8;58

T+O, mg/. 8856 1;04153 138150 13;;450

g/d 45; 350 57 57

9 remo:al 8156 753 856 856S+O, mg/. 1;;3058 67051 764350 7;3350

g/d 351 157 15; 15;

9 remo:al 815 7758 885 7856

VF mg/.

idi#iation rateVFs/ S+O, prod

T%& mg/. 86;57 8;50 1653 850g/d 051 051 050 050

&H4!& mg/. 17750 150 450 14;50

g/d 050 050 050 050

TP mg/. 1050 750 750 850

g/d 050 050 050 050

12h Final-report-18-01-2016

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