Odour and H2S degradation in a full scale biofilter with a mineral based organic coated filter media

[Abstract] In order to minimize the odorous emissions from sludge storage tanks on the waste water treatment plant «Niederrad» of the city of Frankfurt/Main, about 12.000 m3/h of foul air has to be treated. Due to high Hydrogen-Sulphide (H2S) loads, the installed standard biofilter systems failed operation after one year. Thus, one of the existing filter beds was filled with a mineral based organic coated material; the other one was re-filled at the same time with a standard biofilter media to allow a comparative study. In a long term monitoring program from May 2006 to June 2007, both media were compared regarding degradation of H2S and odour. The one-year measurement program revealed that the mineral high performance media performs much better then the standard organic media

APLICACIÓN DE LA TECNOLOGÍA DE FILTRACIÓN POR MEMBRANAS COMO SOLUCIÓN PARA EL ABASTECIMIENTO DE AGUA POTABLE EN COMUNIDADES RURALES DE PAÍSES EN DESARROLLO. LECCIONES APRENDIDAS CON EL USO DEL FILTRO “WATERBACKPACK PAUL” EN COLOMBIA, RETOS Y DESAFÍOS

En el siguiente trabajo se presentan los resultados del uso del WaterBackpack PAUL (unidad de tratamiento de agua basada en ultrafiltración), como sistema descentralizado de tratamiento de agua en zonas rurales. Seis PAUL fueron puestos a prueba con agua cruda  de diferentes fuentes por un mínimo de 12 meses

Urban Water Security: Definition and Assessment Framework

Achieving urban water security is a major challenge for many countries. While several studies have assessed water security at a regional level, many studies have also emphasized the lack of assessment of water security and application of measures to achieve it at the urban level. Recent studies that have focused on measuring urban water security are not holistic, and there is still no agreed-upon understanding of how to operationalize and identify an assessment framework to measure the current state and dynamics of water security. At present, there is also no clearly defined and widely endorsed definition of urban water security. To address this challenge, this study provides a systematic approach to better understand urban water security, with a working definition and an assessment framework to be applied in peri-urban and urban areas. The proposed working definition of urban water security is based on the United Nations (UN) sustainable development goal on water and sanitation and the human rights on water and sanitation. It captures issues of urban-level technical, environmental, and socio-economic indicators that emphasize credibility, legitimacy, and salience. The assessment framework depends on four main dimensions to achieve urban water security: Drinking water and human beings, ecosystem, climate change and water-related hazards, and socio-economic factors (DECS). The framework further enables the analysis of relationships and trade-off between urbanization and water security, as well as between DECS indicators. Applying this framework will help governments, policy-makers, and water stakeholders to target scant resources more eff ectively and sustainably. The study reveals that achieving urban water security requires a holistic and integrated approach with collaborative stakeholders to provide a meaningful way to improve understanding and managing urban water security

Assessing Water Security in Water-Scarce Cities: Applying the Integrated Urban Water Security Index (IUWSI) in Madaba, Jordan

Water security is a major concern for water-scarce cities that face dynamic water challenges due to limited water supply, climate change and increasing water demand. Framing urban water security is challenging due to the complexity and uncertainties of the definitions and assessment frameworks concerning urban water security. Several studies have assessed water security by granting priority indicators equal weight without considering or adapting to the local conditions. This study develops a new urban water security assessment framework with application to the water-scarce city of Madaba, Jordan. The study applies the new assessment framework on the study area and measures urban water security using the integrated urban water security index (IUWSI) and the analytic hierarchy process (AHP) as a decision management tool to prioritise and distinguish indicators that affect the four dimensions of urban water security: drinking water, ecosystems, climate change and water-related hazards, and socioeconomic aspects (DECS). The integrated urban water security index (IUWSI) highlights the state of water security and intervention strategies in Madaba. The study reveals that urban water security in Madaba is satisfactory to meet basic needs, with shortcomings in some aspects of the DECS. However, Madaba faces poor security in terms of managing climate- and water-related risks. The IUWSI framework assists with a rational and evidence-based decision-making process, which is important for enhancing water resources management in water-scarce cities

Geruchsemissionen von Kläranlagen

Geruch – eigentlich ein neutraler Begriff – wird im Kontext von Kläranlagen stets negativ konnotiert. Das ist begründet und muss bei Bau und Erweiterung von Kläranlagen berücksichtigt werden.Über Grundlagen und Messtechnik von Gerüchen bei Abwasseranlagen, also auch Kanalisation, wurde bereits von Frechen (2015) berichtet. Dieser Beitrag stellt die neueren Entwicklungen im Bereich der Messtechnik und der Normierung dar und fokussiert dann auf Kläranlagen, zu denen umfassende Hinweise zur Vermeidung von Konflikten infolge von belästigenden Gerüchen gegeben und an Beispielen erläutert werden.3053262

Correction: Aboelnga, et al. Urban Water Security: Definition and Assessment Framework. Resources 2019, 8, 178

The authors wish to make the following corrections to this paper [...