Page 538 - Industrial Wastewater Treatment, Recycling and Reuse

508 Industrial Wastewater Treatment, Recycling, and Reuse

Table 13.4 Lean stream parameters
Sr. No. Parameters Characteristics Units

1. Flow 145 KLD
2. COD <3600 mg/L
3. BOD <1500 mg/L
4. COD:BOD Ratio <3
5. TSS <400 mg/L
6. TDS 1000–2000 mg/L
7. pH 6.5–8.5 –
8. Chloride <255 mg/L
9. Sulfate <45 mg/L
10. Calcium <34 mg/L
11. Magnesium <76 mg/L
12. Silica <31 mg/L
13. Sodium <98 mg/L
14. Total alkalinity <200 mg/L

Table 13.5 ML stream parameters
3
1. Flow rate m /day 18
2. Feed rate kg/h 927
3. Solvents present in feed % w/w 5 (maximum)
4. Moisture content in the stripper % w/w 50 (maximum)
distillate
5. Steam consumption kg/h 240
6. Hours of operation h 20
7. Solids content % w/w TS % w/w 4.5%

8. Viscosity cP <1@25 C
9. Specific gravity 1.03

10. Specific heat (kcal/kg C) 0.95
11. Suspended solids ppm <100
12. Oil and grease ppm <5
13. pH 7.0
14. Temperature C Ambient
15. TDS ppm 50,000
16. Total hardness mg/L <50
17. Total silica mg/L <50
18. Ammonical nitrogen mg/L <50
19. Dissolved gases mg/L Nil