waste water treatment in costa rica harold steinvorth
TRANSCRIPT
Waste Water Treatment in Costa Rica
Harold Steinvorth
Ley General de Salud (1973)Ley de Vida Silvestre (1992)
Legislation
LegislationLey General de Salud:• Demands Waste Water Treatment• Demands an approval from the
Ministerio de Salud.• Close the establishments that
infringe the law.
Legislation
Ley de Vida Silvestre:• Forbids to contaminate any body
of water.• BOD and Total suspended solids
must not exceed 50 mg/l.
Screen Bars
Hidrostatic Filters
Sandtraps
Grease Traps
Floculation
B
CAJA DEREJAS Y AFORO
Bar screen
Sludge dryers
HabitacionesLixiviadosSludge water
FertilizerCAMPO DE
INFILTRACIONWetland WWT (sand filter)
SEDIMENTADORPRIMARIO
Y DIGESTORPrimary settler
AnaerobicFilter
sludge
PumpingStation
Waste Water
wash
SD
CD
SD
Restaurante
Grease Traps
SIFONESDOSIFICA-
DORES
CAJA DEDISTRIBUCIONDistribution manhole
Waste Water Treatment System
Anaerobic lagoons
Waste Water Treatment System
B
B
CLORATE
CAJA DEENTRADA
watering
Drying chambers
Sludge Recirculation
Apts.
Industrial Zone
Hotel
Lixiviados
Fertilizer
AREAS VERDES
B
B
B
Airation Tanks(3)
Settling Chambers
AerobicDigestor
Overflowpurge
Sludge
blowers
Air
Air
Treated water
Cl2Cleaning purge
B
Aerobic Treatment
Water Inlet
Airation tanks
Air Difuser Blowers
Treated water usage
Treated water storage
Reactores AeróbicosLodos Activados de Aeración
Extendida
Usage
• Verted in a river• Watering• Other (cooling
systems, service water… etc)