Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection - Wisconsin Pollutant Discharge Elimination System › Chapter NR 279 - Petroleum refining › Section NR 279.42 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)

Current through June 24, 2024
(1) Except as
				provided in
				40 CFR 125.30-
				125.32 any
				existing point source subject to this subcategory shall achieve the following
				effluent limitations representing the degree of effluent reduction attainable
				by the application of the best practicable control technology currently
				available (BPT):
BPT effluent limitations
Pollutant or pollutant property
Maximum for any 1 day
Average of daily values for 30 consecutive
								days
Metric units (kilograms per 1,000
								m3 of feedstock)
BOD5
50.6
25.8
TSS
35.6
22.7
COD1
360.0
187.0
Oil and grease
16.2
8.5
Phenolic compounds
0.38
0.184
Ammonia as N
23.4
10.6
Sulfide
0.33
0.150
Total chromium
0.77
0.45
Hexavalent chromium
0.068
0.03
pH
(2)
(2)
English units (pounds per 1,000 bbl of
								feedstock)
BOD5
17.9
9.1
TSS
12.5
8.0
COD1
127.0
66.0
Oil and grease
5.7
3.0
Phenolic compounds
0.133
0.065
Ammonia as N
8.3
3.8
Sulfide
0.118
0.053
Total chromium
0.273
0.16
Hexavalent chromium
0.024
0.011
pH
(2)
(2)
1 See footnote following table in
				  s.
				  NR
				  279.13(4).
2 Within the range of 6.0 to
				  9.0.
(2) The limits set
				forth in sub. (1) shall be multiplied by the following factors to calculate the
				maximum for any one day and maximum average of daily values for 30 consecutive
				days.
(a) Size factor.
1000 bbl. of feedstock per
								stream
Size factor
Less than 49.9
0.71
50.0 to 74.9
0.74
75.0 to 99.9
0.81
100.0 to 124.9
0.88
125.0 to 149.9
0.97
150.0 to 174.9
1.05
175.0 to 199.9
1.14
200.0 or greater
1.19
(b)
				Process factor.
Process configuration
Process factor
Less than 6.49
0.81
6.5 to 7.49
0.88
7.5 to 7.99
1.0
8.0 to 8.49
1.09
8.5 to 8.99
1.19
9.0 to 9.49
1.29
9.5 to 9.99
1.41
10.0 to 10.49
1.53
10.5 to 10.99
1.67
11.0 to 11.49
1.82
11.5 to 11.99
1.98
12.0 to 12.49
2.15
12.5 to 12.99
2.34
13.0 or greater
2.44
(c)
				Example of the application of the above factors. Example - Lube refinery
				125,000 bbl per steam day throughout.
Calculations of the Process Configuration
Process category
Process included
Weighting factor
Crude
Atm crude distillation
1
Vacuum, crude distillation
Desalting
Cracking and coking
Fluid cat. cracking
6
Visbreaking
Thermal cracking
Moving bed cat. cracking
Hydrocracking
Fluid coking
Delayed coking
Lube
Further defined in the development document
13
Asphalt
Asphalt production
12
Asphalt oxidation
Asphalt emulsifying
Process
Capacity (1,000 bbl per stream
								day)
Capacity relative to throughput
Weighting factor
Processing configuration
Crude:
Atm
125.0
1.0
Vacuum
60.0
0.48
Desalting
125.0
1.0
Total
2.48
x1
=2.48
Cracking:
FCC
41.0
0.328
Hydro-
cracking
20.0
0.16
Total
0.488
x6
=2.93
Lubes
5.3
0.042
4.0
0.032
4.9
0.039
Total
0.113
x13
=1.47
Asphalt
4.0
0.032
x12
=0.88
Refinery
process
configuration
=7.26
Notes: See table s. NR 279.42(2) (b) for process factor.
				  Process factor = 0.88.
See Table s. NR 279.42(2) (a) for size factor for 125,000 bbl
				  per stream day lube refinery. Size factor = 0.97.
To calculate the limits for each parameter, multiply the
				  limit s. NR 279.42(1) by both the process factor and size factor. BOD5 limit
				  (maximum for any 1 day) = 17.9 x 0.88 x 0.97 = 15.3 lb. per 1,000 bbl of
				  feedstock.