Transcript WASTEWATER TREATMENT PLANT FOR IL-2

WASTE WATER TREATMENT FOR RITONAVIR
PRODUCTION PLANT
Presented by
Wang Dong Mei
July 8, 2000
GENERAL LAYOUT OF PHARMECUTICAL
FACTORY
Air Emissions
Sewer Discharge
Laboratory
Hazardous Waste Tank
Direct Discharge
Storm Water
Chemical Process Tanks
Construction
Transportation
Storage
PROBLEM STATEMENT
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High concentration of biochemical oxygen
demand (BOD): 9,100 mg/l
High concentration of chemical oxygen demand
(COD): 85,290 mg/l
High concentration of total organic carbon (TOC):
23980 mg/l
High concentration of total nitrogen (TN):
900 mg/l
High concentration of total solid (TS):
10,480 mg/l
DESIGN OBJECTIVES
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Removal of BOD
Removal of COD
Removal of TOC
Removal of TN
Removal of TS
RATIONAL APPROACH
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Primary treatment:
physical unit operations
 Secondary treatment:
chemical and biological unit process
 Tertiary treatment:
combinations of physical, chemical and biological
processes
PRIMARY TREATMENT

Screening: to protect pumps, valves, pipelines, and
other appurtenances from damage or clogging by
rags and large objects
 Grit chamber: to remove grit, sand, and gravel,
usually following screening
 Equalization tank: equalization of flow and
loadings, neutralization pH
PRIMARY TREATMENT
Screens Grit Chamber
Influent
Equalization &
Neutralization Tank
Primary
Sediment Tank
SECONDARY TREATMENT

Flocculation and coagulation: to apply chemical
mixing to increase the removal of COD
 Primary sedimentation: to remove chemical
precipitation, settle-able solids, and particular
matter
 Activated sludge: to remove BOD by
microorganism degradation
 Secondary sedimentation: to remove settable-able
solids
SECONDARY TREATMENT
Flocculation
and Coagulation
Activated
Sludge Pond
Primary
Sedimentation
Secondary
Sedimentation
TERTIARY TREATMENT
Two-step biological nitrification/denitrification:
 Removal of nitrogen by using trickling filters
 Ammonia is converted aerobically to
nitrate(NO3-) (nitrification) in the first step
 Nitrates are converted to nitrogen gas
(denitrification)
TRICKLING FILTER
DISINFECTION

Disinfect pathogen or other organisms by
applying Cl2

Chlorate contact tank
SLUDGE PROCESSING
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Sludge thickening
Sludge stabilization
Anaerobic sludge digestion
Gas production and collection
Sludge disinfection
Sludge dewatering
Land fill
LAYOUT OF THE PLANT
WATER QUALITY OF THE EFFLUENT
Parameters
TOC (mg/l) BOD (mg/l) COD (mg/l) TN (mg/l) TS (mg/l)
Influent
23,980
9100
85290
900
10480
Physico-chemical
14388
5460
426.45
765
4192
Activated Sludge
2877.6
273
213.22
612
838.4
Trickling Filter
575.52
54.6
42.64
61.2
167.68
Standard
20 ~ 60
120
100
3000