2009 association for the study of the cuban economy conference karen kajder

Conceptual Design of a Conceptual Design of a Wastewater Treatment Plant Wastewater Treatment Plant

for the Municipality of Cotorro, for the Municipality of Cotorro, Province of Havana,Province of Havana, CUBA CUBA

2009 Association for the Study of the Cuban Economy Conference

Karen KajderUniversity of Miami, BSENV, ‘09

OutlineOutline

Background on Cotorro wastewater system

Current wastewater system plans in Cotorro

Proposed solution to treat Cotorro’s wastewater

Cost Analysis Conclusion

2009 ASCE Conference Miami FL 2

Almendares WatershedAlmendares Watershed

Almendares River provides water source for Havana

Sources of contamination


CARIBBEAN SEA COJIMAR BAY

WASTEWATER TREATMENT SYSTEM

FACTORIES & PLANTSHOSPITAL

LEGEND

Cristal River Touristic Center

Baby Food Factory

Calle100Landfill

Building Material Factory

Plastics Factory

Metallurgy Plant

Drink Factory

Metal Smelter

Pump Replacement Parts Factory

Beer Factory

Paper MillTire

FactoryGas

Plant

Textile Factory

Beer Factory

IceFactory

Ice Cream Factory

Maria del Carmen WWTP

Puentes Grandes WWTP

ALMENDARES RIVER

Hospital

Hospital

CotorroWWTP

San Pedro Pump Station

Unknown Water Treatment Facility

Beer Factory

Unknown Factory

Unknown Factory

PASO SEQUITORESERVOIR

EJERCITO REBELDE RESERVOIRMARIA DEL

CARMEN TRIBUTARY

SAN FRANCISCOTRIBUTARY

VENTO-ALMENDARES WATERSHED BOUNDARY

TOWN OF COTORRO

TOWN OF CALABAZAR

CHORRERA COVE

PITIRRE RESERVOIR

HAVANA HARBOR

Unknown Factory

JIBAROTRIBUTARY

LA CATALINATRIBUTARY

GUADIANATRIBUTARY

Bird Slaughter

House

Background: Cotorro, CubaBackground: Cotorro, Cuba

Population: ~74,500Population connected to sewer collection

system: ~20,000Cotorro’s domestic wastewater is currently

being discharged into upper tributaries of the Almendares River- untreated

Vento Aquifer provides about 50% of the potable water for Havana

In-operable pump station: wiring and control panels need to be repaired

42009 ASCE Conference Miami FL

Contour DetailsContour Details5


Current Plan- funding provided by Current Plan- funding provided by Organization of Petroleum Organization of Petroleum Exporting Countries (OPEC)Exporting Countries (OPEC)

Build additional sewer collection linesRestore San Pedro pump stationConstruct holding tankConstruct wastewater treatment plant

Ultimate Goal Move water into the Cojimar Watershed


Almendares WatershedAlmendares Watershed7


Methods for Treating Domestic Methods for Treating Domestic WastewaterWastewater


Design ProcessDesign Process

Protect Human Health◦Cost-effective◦Easy to use and maintain◦Incorporate local materials and practices◦Minimize environmental impacts

Advantages/Disadvantages of different unit processes

Technical AnalysisCost


Three Project PhasesThree Project Phases

Phase I: Preliminary, Primary Treatment and Disinfection◦Grit Removal◦Settling Tanks (Clarifiers)◦Chlorine Gas◦Sludge Treatment

Phase II: Secondary treatment◦Trickling Filter◦Settling Tanks

Phase III: Tertiary Treatment- Nutrient Removal◦ Nitrogen and Phosphorus


Site LayoutSite Layout11


Effectiveness of the DesignEffectiveness of the Design

Population growth to 2025 (WHO)

◦82,500 people

Quality of wastewater assumed from EPA, UN, and Puerto Rico Aqueduct and Sewer Authority

With all treatment systems implemented, Class A quality status◦Rivers and reservoirs that are utilized as a

source of potable water for public use and/or industrial use for the processing of food


Cost AnalysisCost Analysis

Look at how much each phase would costUse cost estimating tables and historical

knowledge from similar projects in the U.S.

Consider impact on Almendares and Cojimar watersheds


DescriptionCumulative

Cost(U.S. $m)

Benefit to San Francisco and

Almendares Rivers

Benefit to Cojimar

RiverComments

No action (discharge without treatment to San Francisco River)

0Status quo: threat to drinking water and

ecologyN/A

Not acceptable. Cost of alternative water supply for Havana is very high.

Diversion to Cojimar River without

treatment

Electric and control panels: $330 K

Entire pump station: $2.3 M

Removal of public health threat downstream

Severe Impairment.

Threatens even Class “C” uses

Not acceptable

Phase 1:Diversion with

Primary Treatment

$26 Million($24 +$2.3)

Removal of public health threat

Impairment. May not meet Class “C” uses

Acceptability questionable


Secondary Treatment$44 Million(18+24+2.3)


Allows Class “B” uses

Acceptable


Tertiary Treatment

$47 Million(3+18+24+2.3)


Allows Class “A” uses

Acceptable2009 ASCE Conference Miami FL 14

**CITATION FOR TABLE****

ConclusionConclusion

The Almendares Watershed needs to be protected to safeguard human health

◦Implementation of three phases will bring wastewater quality up to the highest standards

◦Contamination of the environment will also be avoided- cleaner and more suitable resources for fishing or recreation and tourism

◦Further work should be done with economists to fully understand the impact on the region


Questions?Questions?

Thank you!


AcknowledgementsAcknowledgements

This presentation reflects the collective guidance and review comments from many individuals both within and outside the University of Miami (UM) Department of Civil, Architectural and Environmental Engineering. The UM senior class project team would like to specifically thank the following individuals and organizations for their valuable time in providing ideas and review comments:

University of Miami Department of Civil and Environmental Engineering:◦ Helena Solo-Gabriele, Ph.D., P.E.

CDM (Camp, Dresser & McKee Inc):◦ Armando Perez, P.E., PhD◦ Victor Pujals, P.E.◦ Stefan Haecker, P.E.◦ Ignacio L. Lizama, P.E.◦ Bruce Chalmers, P.E.◦ Layla Llewelyn, P.E.

Hazen and Sawyer:◦ Fernando Chiriboga, P.E.◦ Peter S. Robinson, P.E.◦ Jason Payge, P.E.


2009 association for the study of the cuban economy conference karen kajder

Documents

peoplequality of wastewater

cotorros domestic wastewater

primary treatment

treatment systems

water source

source of potable water

sewer collection system

sewer authoritywith