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WASTE WATER TREATMENT FOR WASTE WATER TREATMENT FOR RITONAVIR PRODUCTION PLANTRITONAVIR PRODUCTION PLANT
Presented by
Wang Dong Mei
July 8, 2000
GENERAL LAYOUT OF PHARMECUTICAL GENERAL LAYOUT OF PHARMECUTICAL FACTORYFACTORY
Chemical Process Tanks
Air Emissions
Sewer Discharge
Hazardous Waste Tank
Direct Discharge
Laboratory
Storm Water
Transportation
Storage
Construction
PROBLEM STATEMENTPROBLEM STATEMENT
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 OBJECTIVESDESIGN OBJECTIVES
Removal of BOD Removal of COD Removal of TOC Removal of TN Removal of TS
RATIONAL APPROACHRATIONAL APPROACH
Primary treatment:
physical unit operations Secondary treatment:
chemical and biological unit process Tertiary treatment:
combinations of physical, chemical and biological processes
PRIMARY TREATMENTPRIMARY 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 TREATMENTPRIMARY TREATMENT
Influent
Screens Grit Chamber Equalization & Neutralization Tank
Primary Sediment Tank
SECONDARY TREATMENTSECONDARY 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 TREATMENTSECONDARY TREATMENT
Flocculation and Coagulation Activated
Sludge Pond
Primary Sedimentation
Secondary Sedimentation
TERTIARY TREATMENTTERTIARY 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 FILTERTRICKLING FILTER
DISINFECTIONDISINFECTION
Disinfect pathogen or other organisms by applying Cl2
Chlorate contact tank
SLUDGE PROCESSINGSLUDGE PROCESSING
Sludge thickening Sludge stabilization Anaerobic sludge digestion Gas production and collection Sludge disinfection Sludge dewatering Land fill
LAYOUT OF THE PLANTLAYOUT OF THE PLANT
WATER QUALITY OF THE EFFLUENTWATER 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 10480Physico-chemical 14388 5460 426.45 765 4192Activated Sludge 2877.6 273 213.22 612 838.4Trickling Filter 575.52 54.6 42.64 61.2 167.68Standard 20 ~ 60 120 100 3000