Table 9 Cracking Subcategory Raw Waste Load Effluent from Refinery API Separatora

_Probability of occurrence, percent less than or equal to

Parameters__10__50 (median)__90

Phenols

0.19 (0.068)

4.00 (1.4)

80.08 (28.0)

TSS

0.94 (0.33)

18.16 (6.35)

360.36 (126.0)

Sulfur

0.01 (0.0035)

0.94 (0.33)

39.47 (13.8)

Chromium

0.0008 (0.00028)

0.25 (0.088)

4.15 (1.45)

Ammonia

2.35 (0.82)

28.31 (9.9)

174.46 (61.0)

Flowb

3.29 (1.15)

92.95 (32.5)

2745.6 (960.0)

"Values represent kg/1000 m3 (lb/1000 bbl) of feedstock throughput. b1000 m3/1000 m3 feedstock throughput (gallons/bbl).

BOD, biochemical oxygen demand; COD, chemical oxygen demand; TOC, total organic carbon; TSS, total suspended solids; O&G, oil and grease. Source: From Ref. 7.

"Values represent kg/1000 m3 (lb/1000 bbl) of feedstock throughput. b1000 m3/1000 m3 feedstock throughput (gallons/bbl).

BOD, biochemical oxygen demand; COD, chemical oxygen demand; TOC, total organic carbon; TSS, total suspended solids; O&G, oil and grease. Source: From Ref. 7.

Table 10 Petrochemical Subcategory Raw Waste Load Effluent from Refinery API Separatora

Parameters

Probability of occurrence, percent less than

or equal to

10

50 (median)

90

bod5

40.90 (14.3)

171.6 (60)

715 (250)

COD

200.2 (70)

463.32 (162)

1086.8 (380)

TOC

48.62 (17)

148.72 (52)

457.6 (160)

TSS

6.29 (2.2)

48.62 (17)

371.8 (130)

O&G

12.01 (4.2)

52.91 (18.5)

234.52 (82)

Phenols

2.55 (0.89)

7.72 (2.7)

23.74 (8.3)

Ammonia

5.43 (1.9)

34.32 (12)

205.92 (72)

Sulfides

0.009 (0.003)

0.86 (0.3)

91.52 (32)

Chromium

0.014 (0.005)

0.234 (0.085)

3.86 (1.35)

Flowb

26.60 (9.3)

108.68 (38)

443.3 (155)

aValues represent kg/1000 m3 (lb/1000 bbl) of feedstock throughput. b1000 m3/1000 m3 feedstock throughput (gallons/bbl).

BOD, biochemical oxygen demand; COD, chemical oxygen demand; TOC, total organic carbon; TSS, total suspended solids; O&G, oil and grease. Source: From Ref. 7.

diagram indicating representative sources of solid waste in utility water systems [18]. Wastes generated from wastewater treatment systems include API/CPI separator sludge, dissolved-air flotation or induced-air flotation system floats, pond and tank sediments, and biosolids. Of these, only the biosolids from the biological wastewater treatment system may be nonhazardous. Figure 10 shows a refinery schematic diagram indicating representative sources of solids waste in wastewater treatment systems [18].

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