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A Wastewater Treatment, Reuse and Outreach Program at the Autonomous University of Benito Juarez in Oaxaca, Mexico by Tressie Word, M.S. Winzler & Kelly Consulting Engineers. the intro. Concept Context Outreach Technology Lessons learned Outcomes Next steps. the concept.
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A Wastewater Treatment, Reuse and Outreach Program at the Autonomous University of Benito Juarez in Oaxaca, Mexicoby Tressie Word, M.S.Winzler & Kelly Consulting Engineers
the intro. • Concept • Context • Outreach • Technology • Lessons learned • Outcomes • Next steps
the concept. Build capacity in natural wastewater treatment, reuse and watershed management in the Oaxaca Valley Capacity building is the creation of an enabling environment with appropriate policy, legal frameworks & institutional development; including community participation, development of resources & strengthening of managerial systems (UNDP, 1991). • A long-term, continuing process that involves all stakeholders
Humboldt State University (HSU) Universidad Autonómica de Benito Juárez de Oaxaca (UABJO) Associated organizations Dr. Robert Gearheart, HSU Professor Peter Haase, Principal Engineer, Fall Creek Engineering ~ HSU Volunteer Tressie Word, Staff Engineer, Winzler & Kelly ~ HSU Lecturer Administration Chemistry Department Faculty, Students & Staff Institute of Nature and Society of Oaxaca Rio Salado Watershed Committee Federal, State and Local Water Commissions Oaxaca Secretary of Health the players.
Current Sources UABJO Private Individuals Private Companies State of Oaxaca Potential Sources - National Water Commission of Mexico (CNA) National Secretary of Environment and Natural Resources (SEMARNAT) Secretary of Health of Oaxaca (SSO) Secretary of Social Development of Oaxaca (SEDESOL) - Inter-American Development Bank - North American Development Bank the funds.
the specifics. • Establish local need & engagement • Pursue funding • Outreach program • Monitoring & recording wastewater data • Educational, technical & operational guidance • Development of a technical support network • International exchange opportunities • Workshop series • Four annual participative workshops • On-campus demonstration facility • Natural wastewater treatment & reclamation
the status of water and wastewater in Mexico. • Over-exploitation of water resources (INEGI, 2007) • Insufficient or lacking wastewater sanitation measures (CNA, 2004) • Infrastructure • Operation & maintenance • Monitoring
(CNA, 2004)20% to 35% of wastewater istreated in Mexico (INEGI, 2007)
the effects. Environment • Contamination of potable water resources (Briscoe, 1993) • Ecosystem imbalances (Welch & Lindell, 1992) • Pollution of soils & agricultural produce (INEGI, 2007)
the effects. Human Health • Pathogens cause gastro-intestinal infections, typhoid, cholera & dysentery • Toxic chemicals from industry, agriculture & urban areas cause harmful effects
the status of wastewater in Oaxaca de Juárez, Oaxaca. • Population 256,130 • Activated sludge treatment (still starting-up) • In the very recent past, most wastewater was discharged directly to rivers (Atoyac, Salado & Jaltlaco) & streets http://www.tomzap.com/coaxaca.html
the status of wastewater in communities surrounding Oaxaca de Juárez.
the UABJO project goals. • Goals • On-campus infrastructure improvements • Ecological wastewater treatment & and reuse • Water quality monitoring capacity • Improve water & wastewater conditions in the Oaxaca Valley • Enhance community relations • Support applied research efforts • Expand international exchange opportunities
the workshop participants. Collaborative efforts involving governments, private firms & civil society strongly support project success (UNWWAP, 2006) • Government • Water authorities • Industry • Academia • Plant managers & operators • Private sector • Concerned citizens Workshop 1
the workshop foci. • Workshop 1: Natural Wastewater Treatment System Science & Design • Workshop 2: Watershed and Wastewater Management Permitting, Funding Sources, and Laws • Workshop 3: Sustainable Technologies and Monitoring for Watershed Protection, Wastewater Treatment and Reuse • Workshop 4: Watershed and Wastewater Management Technique Start-up, Troubleshooting, Operation and Maintenance
the demonstration project. Goal: Create a natural, simple, inexpensive, low-maintenance, energy efficient, wastewater treatment & reclamation project
the technology. • Filtration • Storage • Subsurface Irrigation • Upflow Anaerobic Sludge Blanket • Facultative Lagoon • Free Surface Wetlands
upflow anaerobic sludge blanket front view side view
the technology. • Meets secondary treatment effluent standards for water reuse (Wendland et al, 2006) • Demands low energy • Produces little sludge • Requires simple operation & maintenance
the permits. • UABJO Project • Permit Requirements Waived • Autonomous University • Pilot project • General Process • Environmental Impact Report • Design approval process • Permit required from the National Water Commission
the team. Final Design & Construction
the outreach. Guendulain
the challenges. • Political climate • Cultural differences • Communication • Coordination • Funding • Regulatory enforcement • Weather
the lessons. • Employ sincere cultural & political sensitivity • Changes in government & administration have broad, immediate implications • Anticipate emergent events & weak points • Maintain long-term presence • Support solid local engagement in project components • Apply flexible, transparent, engaged problem solving practices • Provide appropriately complex operation, maintenance & evaluation guidelines
the outcomes. • On-campus wetland wastewater treatment, reuse & demonstration system • Establishment of a university wastewater outreach program • Local information network on wastewater treatment technology • Local wastewater monitoring program
the outcomes. • The implementation of two constructed wetland wastewater treatment plants stemmed from the first workshop • Matatlan (~9,000 Inhabitants) • Tlalixtac (~10,000 Inhabitants) • The workshop series continues
the future. • Provide a venue to create an Oaxaca Committee for Water, Environmental and Health • Support surrounding communities to implement appropriate water and wastewater projects • Expand UABJO international exchange opportunities • Develop of a local wastewater technical support network • Continue technical support for UABJO demonstration and outreach programs
some resources. • The Appropedia Foundation: Living library of sustainable development projects in the developing world • http://www.appropedia.org • Institute of Nature and Society of Oaxaca: Studies, publications and outreach in Oaxaca, Mexico on watershed management and sustainable development • http://insooaxaca.com • My email: tressieword@w-and-k.com