Tabel 6.1: Komposisi air limbah di Kota Bogor
2010 2015 2020 2020
Domestic piped water usage lcd 166 166 166 166
Ratio drinking water/waste water % 70% 70% 70% 70%
Daily wastewater production
lcd
116
116
116
116
Ratio volume black/grey water % 25% 25% 25% 25%
Strength black water
mg BOD/l
450
450
450
450 Strength grey water
mg BOD/l
170
170
170
170 BOD contribution black water gBOD/cap/da
y
13
13
13
13 BOD contribution grey water gBOD/cap/da
y
15
15
15
15
Ratio black/grey BOD % 88% 88% 88% 88%
Domestic waste production per capita (pe) gBOD/cap/da y
28
28
28
28 Daily BOD load domestic wastewater kg BOD/day 27,609 31,792 42,669 49,641 Daily BOD load wastewater commercial enterprises kg BOD/day 2,513 2,793 3,910 4,468 Daily BOD load domestic wastewater and ww
commercial enterprises kg BOD/day 30,122 34,585 46,578 54,109
Strength domestic wastewater
mg BOD/l
240
240
240
240
277184BA01 MMI MMI 12 A
2010 2015 2020 2020
Strength wastewater commercial enterprises
mg BOD/l
400
400
400
400 Sumber: PDAM Bogor, investigasi dan kajian MMI
1.1.1.1
STP Tegal Gundil maximum capacity
Sebagaimana didetailkan di Bab 6.2.1, proses WSP eksisting di IPAL Tegal Gundil memadai untuk
mengolah limbah 2400 rumah tangga. Waktu retensi minimum yang direkomendasikan untuk sistem WSP
adalah 4 hari, untuk 2400 sambungan, waktu retensi di IPAL Tegal Gundil adalah 4 jam, sehingga
kapasitas pengolahan memadai untuk melayani rencana peningkatan zona pelayanan air limbah. Lihat
Tabel 6.5 untuk detail kalkulasi proses.
Table 6.2: Kalkulasi proses IPAL Tegal Gundil
Assessment Tegal Gundil 30/Mar/11 BOGOR
Description Unit 8
Households served [nrs] 2,400
Household size [cap/hh] 5
Persons served [cap] 12,000
BOD per person per day [gBOD] 28
Average water produced [lcd] 116.2
Inflow, leakage, stormwater % 20%
Daily Capacity [m3/day] 1,673
Avg. sewage strength [mgBOD/l] 200
Bacteriological Quality [E-coli/l] 1E+08
Breakdown rate BOD 22degr. [1/day] 0.42
Breakdown rate E-coli 22degr. [1/day] 3.68
ANAEROBIC PONDS
Number of ponds 3
Desludging interval [years] 1
Per person sludge production [liters/year] 30
Sludge [m3] 360
Extra depth [m'] 0.48
Depth [m'] 2.5
Effective depth [m'] 2.02
Surface area [m2] 250
Surface area [m2] 750
Volume [m3] 1,515
Organic loading gBOD/m3/d 220.90
Retention time [days] 0.9
BOD removal lower layers [%] 30%
Remaining BOD [mgBOD/l] 140
BOD effluent [mgBOD/l] 102
Assessment Tegal Gundil 30/Mar/11 BOGOR
Efficiency BOD removal [%] 49%
Efficiency E-coli removal [%] 77%
FACULTATIVE PONDS
Effective depth [m'] 1.50
Surface area pond 1 [m2] 1,025
Surface area pond 2 [m2] 435
Surface area [m2] 1,460
Volume [m3] 2,190
Retention time [days] 1
BOD removal lower layers [%] 0%
Remaining BOD [mgBOD/l] 102
BOD effluent [mg/l] 66
BQ effluent [E-coli/l] 4E+06
Efficiency BOD removal [%] 35%
Efficiency E-coli removal [%] 83%
AEROBIC PONDS
Effective depth [m'] 1.50
Surface area pond 1 [m2] 640
Surface area pond 2 [m2] 485
Surface area [m2] 1,125
Volume [m3] 1,688
Retention time [days] 1
1.1.1.2
UASB reaktor IPAL Paledang
Kriteria desain dan desain reaktor UASB untuk tahun 2015 disajikan pada Tabel 6.6. Akan dibutuhkan 3
unit reaktor, berukuran panjang 21 meter, lebar 8 meter dan tinggi 5 meter. Sebagai alternatif, 2nam
reaktor fiberglas bertulang dapat juga digunakan. Masing-masing reaktor berukuran tinggi 5m dan diameter
10m. Unit ini dapat digunakan kembali untuk tujuan lain ketika IPAL Paledang tidak digunakan lagi saat
wilayah embrio sudah tersambung dengan pipa induk zona Pusat dan pengolahan air limbah dipusatkan di
IPAL Kayumanis.
Tabel 6.3: Desain reaktor UASB untuk 2015 - Embrio
Treatment Options 29/Mar/11 Embryo
Embryo 2015
Description Unit
Daily Capacity [m3/day] 3,876
Treatment Options 29/Mar/11 Embryo
Peak flow [m3/hour] 646
Avg. sewage strength [mgBOD/l] 230
Bacteriological Quality [E-coli/l] 1E+08
Breakdown rate BOD 22degr. [1/day] 0.42
Breakdown rate E-coli 22degr. [1/day] 3.68
UASB
Hydraulic retention time peak flow [hours] 4
Volume [m3] 2,584
Avg.Hydraulic retention time [hours] 16
BOD-load [kgBOD/m3/day] 0.34
Height [m'] 5
Surface Area [m2] 520
number [units] 3
length/width [1/1] 2.50
Width [m'] 8
Length [m'] 21
Surface load [m'/hour] 1.24
BOD removal [%] 80%
BQ removal [%] 50%
BOD effluent [mg/l] 46
BQ effluent [E-coli/l] 5E+07
1.1.1.3
Desain sistem FAP untuk IPAL Tegal Gundil, Ciluar dan Kayumanis
Proses WSP di tegal gundil dapat dialihkan menjadi FAP dengan penambahan aerator di kolam stabilisasi.
IPAL Ciluar dan Kayumanis akan dikembangkan dengan sistem FAP. Kriteria desain dan desain untuk
sistem DAP pada ketiga lokasi di tahun 2020 dan 2030 disajikan pada Tabel 6.7.
Tabel 6.4: Kriteria desain dan desain FAP
Treatment Options 29/Mar/11 BOGOR
STP 1: Tegal Gundil
STP 2: Kayu Manis
STP 2: Kayu Manis
STP 3: Ciluar
2030 2020 2030 2030
Description Unit
Households served [nrs] 3,000 12,300 30,000 11,000
Household size [cap/hh] 5 5 5 5
Persons served [cap] 15,000 61,500 150,000 55,000
BOD per person per day [gBOD] 28 28 28 28
Average water produced [lcd] 116.2 116.2 116.2 116.2
Treatment Options 29/Mar/11 BOGOR
STP 1: Tegal Gundil
STP 2: Kayu Manis
STP 2: Kayu Manis
STP 3: Ciluar
2030 2020 2030 2030
Description Unit
Inflow stormwater, leakage etc. [%] 20% 20% 20% 20%
Daily Capacity [m3/day] 2,092 10,933 26,564 9,740
Peak factor [ ] 2 2 2 2
Peak flow [m3/hour] 174 911 2,214 812
Avg. sewage strength [mgBOD/l] 240 240 240 240
Bacteriological Quality [E-coli/l] 1E+08 1E+08 1E+08 1E+08
Breakdown rate BOD 22degr. [1/day] 0.42 0.42 0.42 0.42
Breakdown rate E-coli 22degr. [1/day] 3.68 3.68 3.68 3.68
BOD removal aer.pond 22degr. [1/day] 1.07 1.07 1.07 1.07
FACULTATIVE AERATED PONDS
Retention time [days] 3 5 4 5
Volume [m3] 6,275 54,664 106,256 48,701
Depth [m'] 2.5 2.5 2.5 2.5
Surface area [m2] 2,510 21,866 42,502 19,480
Surface area [ha] 0.3 2.2 4.3 1.9
Desludging interval [years] 2 2 2 2
Per person sludge production [liters/year] 30 30 30 30
Sludge [m3] 900 3,690 9,000 3,300
Extra depth [m'] 0.36 0.17 0.21 0.17
Total depth [m'] 2.9 2.7 2.7 2.7
BOD removal lower layers [%] 30% 30% 30% 30%
Remaining BOD [mgBOD/l] 168 168 168 168
BOD effluent [mg/l] 40 26 32 26
Efficiency aeration BOD removal [%] 76% 84% 81% 84%
Oxygen requirement [kgO2/hour] 16 94 220 84
Oxygenation Capacity [kg O2/kWh] 1.6 1.6 1.6 1.6
Power requirement [kW] 10 59 138 52
Power input [W/m3] 1.4 1.0 1.2 1.0
No nitrification
BQ effluent [E-coli/l] 8E+06 5E+06 6E+06 5E+06
Efficiency BOD removal [%] 83% 89% 87% 89%
Efficiency E-coli removal [%] 92% 95% 94% 95%
suspended solids [mg/liter] 105 105 105 105
Sludge drying [ha] 0.18 0.738 1.8 0.66
SUMMARY ALTERNATIVE 2:
Nett Land requirement [ha] 0.43 2.92 6.05 2.61
Treatment Options 29/Mar/11 BOGOR
STP 1: Tegal Gundil
STP 2: Kayu Manis
STP 2: Kayu Manis
STP 3: Ciluar
2030 2020 2030 2030
Description Unit
Gross Land requirement [ha] 0.54 3.66 7.56 3.26
Power [kW] 32 89 182 81
Total energy [kWh/day] 356 893 1,783 822
Energy/year [kWh/year] 130,600 326,600 651,600 299,600
