Abatement Cost TSS Reject Treatment Plant RTP Cold Rolling Mill
Lampiran 4 Perhitungan Efisiensi, Beban Pencemar Aktual dan Beban Pencemar Maksimum
Parameter TSS Reject Treatment Plant RTP Cold Rolling Mill CRM PT. Krakatau Steel tahun 2012-2014
BM mgl
Inlet mgl
Outlet mgl
Efisiensi persen
Debit m³hari
BPA kghari
BPM kghari
400 1100
35 96,8
50 1,8
20,0 400
1100 18
98,4 181,43
3,3 72,6
400 1100
1,8 99,8
255,95 0,5
102,4 400
1100 35
96,8 45,13
1,6 18,1
400 1100
13 98,8
589 7,7
235,6 400
1100 84
92,4 63,45
5,3 25,4
400 1100
74 93,3
54 4,0
21,6 400
1100 178
83,8 57
10,1 22,8
400 1100
54 95,1
60,5 3,3
24,2 400
1100 20
98,2 26,4
0,5 10,6
400 1100
41 96,3
77,9 3,2
31,2 400
1100 94
91,5 137
12,9 54,8
400 1100
49 95,5
53 2,6
21,2 400
1100 22
98,0 70
1,5 28,0
400 1100
3 99,7
96 0,3
38,4 400
1100 30
97,3 77
2,3 30,8
400 1100
155 85,9
100 15,5
40,0 400
1100 62
94,4 60
3,7 24,0
400 1100
248 77,5
187 46,4
74,8 400
1100 19
98,3 22
0,4 8,8
400 1100
90 91,8
218 19,6
87,2 400
1100 76
93,1 210
16,0 84,0
400 1100
10 99,1
42 0,4
16,8 400
1100 71
93,5 47
3,3 18,8
400 1100
56 94,9
66,82 3,7
26,7 400
1100 143
87,0 68,54
9,8 27,4
400 1100
48 95,6
145,64 7,0
58,3 400
1100 5
99,5 120
0,6 48,0
400 1100
58 94,7
75 4,4
30,0 400
1100 118
89,3 148
17,5 59,2
400 1100
56 94,9
48,65 2,7
19,5 400
1100 45
95,9 170
7,7 68,0
400 1100
179 83,7
176 31,5
70,4 400
1100 102
90,7 167
17,0 66,8
400 1100
1100 0,0
116 127,6
46,4 400
1100 177
83,9 43
7,6 17,2
Sumber: data sekunder
Lampiran 5 Hasil Analisis Uji Statistik Fisik Reject Treatment Plant RTP Cold Rolling Mill
CRM PT. Krakatau Steel tahun 2012-2014
Paired T-Test and CI: COD in; COD out Paired T for inlet - outlet
N Mean StDev SE Mean inlet 36 400,0 0,0 0,0
outlet 36 125,4 74,2 12,4 Difference 36 274,6 74,2 12,4
95 CI for mean difference: 249,5; 299,7 T-Test of mean difference = 0 vs not = 0: T-Value = 22,21 P-
Value = 0,000 Paired T-Test and CI: BM t; tempratur out
Paired T for BM t - tempratur out N Mean StDev SE Mean
BM t 36 40,000 0,000 0,000 tempratur out 36 36,483 3,212 0,535
Difference 36 3,517 3,212 0,535 95 CI for mean difference: 2,430; 4,603
T-Test of mean difference = 0 vs not = 0: T-Value = 6,57 P- Value = 0,000
Paired T-Test and CI: TSS in; TSS out Paired T for TSS in - TSS out
N Mean StDev SE Mean TSS in 36 1100,0 0,0 0,0
TSS out 36 99,2 181,4 30,2 Difference 36 1000,8 181,4 30,2
95 CI for mean difference: 939,5; 1062,2 T-Test of mean difference = 0 vs not = 0: T-Value = 33,10 P-
Value = 0,000 Paired T-Test and CI: TDS in; TDS out
Paired T for TDS in - TDS out N Mean StDev SE Mean
TDS in 36 7619 0 0 TDS out 36 2059 1056 176
Difference 36 5560 1056 176 95 CI for mean difference: 5202; 5917
T-Test of mean difference = 0 vs not = 0: T-Value = 31,58 P- Value = 0,000
Lampiran 6 Hasil Analisis Uji Statistik Fisik outlet dan Baku Mutu Limbah Cair Reject
Treatment Plant RTP Cold Rolling Mill CRM PT. Krakatau Steel tahun 2012- 2014.
One-Sample T: COD out Test of mu = 300 vs 300
95 Upper Variable N Mean StDev SE Mean Bound T P
COD out 36 125,4 74,2 12,4 146,3 -14,12 0,000 One-Sample T: T out
Test of mu = 40 vs 40 95 Upper
Variable N Mean StDev SE Mean Bound T P T out 36 36,483 3,212 0,535 37,388 -6,57 0,000
One-Sample T: TDS out Test of mu = 4000 vs 4000
95 Upper
Variable N Mean StDev SE Mean Bound T P TDS out 36 2059 1056 176 2357 -11,03 0,000
One-Sample T: TSS out Test of mu = 400 vs 400
95 Upper Variable N Mean StDev SE Mean Bound T P
TSS out 36 99,2 181,4 30,2 150,2 -9,95 0,000
Lampiran 7 Total Abatement Cost CODReject Treatment Plant RTP Cold Rolling Mill
CRM PT. Krakatau Steel tahun 2012-2014.
Bulan Bahan Baku Rp
Tenaga kerja Rp Listrik Rp
Total Rp Jan-12
34.850.000 64.916.284
62.217.766 161.984.050
Feb-12 221.500.000
64.916.284 57.310.956
343.727.240 Mar-12
346.875.000 64.916.284
57.642.400 469.433.684
Apr-12 160.100.000
64.916.284 53.729.922
278.746.206 Mei-12
241.900.000 64.916.284
62.390.693 369.206.977
Jun-12 424.325.000
64.916.284 67.254.270
556.495.554 Jul-12
70.050.000 64.916.284
38.188.090 173.154.374
Agust-12 123.850.000
64.916.284 50.120.067
238.886.351 Sep-12
317.775.000 64.916.284
55.488.015 438.179.299
Okt-12 77.100.000
64.916.284 50.559.590
192.575.874 Nop-12
28.975.000 64.916.284
43.692.939 137.584.223
Des-12 223.100.000
64.916.284 43.675.646
331.691.930 Jan-13
34.850.000 64.916.284
53.845.207 153.611.491
Feb-13 221.500.000
64.916.284 47.886.424
334.302.708 Mar-13
1.140.350.000 64.916.284
61.403.567 1.266.669.851
Apr-13 358.100.000
64.916.284 53.866.823
476.883.107 Mei-13
361.775.000 64.916.284
53.765.949 480.457.233
Jun-13 294.025.000
64.916.284 44.615.218
403.556.502 Jul-13
173.525.000 64.916.284
48.830.318 287.271.602
Agust-13 170.350.000
64.916.284 51.712.438
286.978.722 Sep-13
180.125.000 64.916.284
43.851.456 288.892.740
Okt-13 70.850.000
64.916.284 43.851.456
179.617.740 Nop-13
150.050.000 64.916.284
52.468.995 267.435.279
Des-13 175.225.000
64.916.284 45.717.629
285.858.913 Jan-14
174.975.000 64.916.284
50.667.670 290.558.954
Feb-14 116.350.000
64.916.284 18.111.242
199.377.526 Mar-14
174.350.000 64.916.284
81.651.901 320.918.185
Apr-14 182.475.000
64.916.284 59.148.308
306.539.592 Mei-14
140.550.000 64.916.284
46.358.900 251.825.184
Jun-14 26.800.000
64.916.284 58.319.698
150.035.982 Jul-14
105.725.000 64.916.284
37.064.063 207.705.347
Agust-14 92.200.000
64.916.284 52.296.067
209.412.351 Sep-14
60.500.000 64.916.284
46.820.039 172.236.323
Okt-14 175.175.000
64.916.284 47.742.318
287.833.602 Nop-14
21.400.000 64.916.284
46.402.132 132.718.416
Des-14 66.725.000
64.916.284 42.295.111
173.936.395
Sumber: data sekunder diolah