RESUMO
Human urine has a high chemical oxygen demand (COD) content which makes anaerobic treatments potentially appropriate for the management of yellow waters, allowing for energy recovery. However, its high N content makes this treatment challenging. The present work studied the viability of performing an anaerobic digestion process for COD valorization on a real (not synthetic) urine stream at laboratory scale. To deal with nitrogen inhibition, two different ammonia extraction systems were proposed and tested. With them, a proper evolution of acidogenesis and methanogenesis was observed. Nitrogen was recovered in the form of ammonium sulphate, which could be used for agriculture, in two different ways: ammonia extraction from the urine stream before feeding the reactor and in situ extraction in the reactor. The first method, which proved to be a better strategy consisted in a desorption process (NaOH addition, air bubbling and acid (H2SO4) absorption column, HCl for final pH adjustment) whereas the in situ extraction in the reactor consisted of an acid (H2SO4) absorption column installed in the biogas recycling line of both reactors. Stable methane production over 220â mL/g COD was achieved and methane content in the biogas was stable around 71%.
RESUMO
El plan Estratégico de la Gerencia de la Red de Servicios de salud Norte, es la herramienta fundamental que nos permitirá en el futuro inmediato realizar el seguimiento de acciones, cumplimiento de metas y objetivos y permitiendo la toma de decisiones oportunas. Abordar el tema de salud de la RED DE SEVICIOS DE SALUD NORTE resulta una tarea compleja a partir de una construcción colectiva por lo que nuestro Páis atraviesa cambios producidos en la estructura y organización del estado. especialmente por el proceso de descentralización y mejora de la salud, así como la consagración de políticas de Estado hacen necesario efectuar la reformulación o formulación de los Planes Estratégicos Intitucionales que permitan establecer con claridad Lineamientos de política Institucional para una adecuada orientación en la asignación de los recursos públicos.
