Perspectives are different frameworks from which to explore the knowledge around sustainable sanitation and water management. Perspectives are like filters: they compile and structure the information that relate to a given focus theme, region or context. This allows you to quickly navigate to the content of your particular interest while promoting the holistic understanding of sustainable sanitation and water management.
This link is a video showing the flocculation of microalgae with aluminium sulphate at different concentrations.
In this paper, a new biodegradable organic flocculating agent extracted from the juice of prickly pear is used in a physiochemical process (coagulation-flocculation) in order to treat liquid rejections charged with chromium (VI). This bio flocculant helps reduce the turbidity of industrial effluents, making it pass from 100 NTU to values below 2 NTU.
ABID, A. ; ZOUHRI, A. ; IFER, A. (2008): Utilisation d’un nouveau bio-floculant extrait du cactus marocain dans le traitement des rejets chargés de chrome (VI) par le procédé de coagulation floculation. Entradas: Revue des Energies Renouvelables : Volume 11 , 251-257. URL [Visita: 30.11.2011]
This PDF presentation features photos of sprinkle irrigation system components and installation in Nepal.
IDE (n.y): Sprinkler Irrigation Album. Golden: International Development Enterprises URL [Visita: 30.11.2011]
A coagulation-flocculation process using a selection of biopolymers (chitosan and tannin) is described to treat an ink-containing effluent generated in the processing of packaging. The efficiency of the process was investigated in terms of the influence of pH, coagulant and flocculant concentrations, as well as chitosan characteristics (especially the molecular weight).
ROUSSY, J. ; CHASTELLAN, P. ; VOOREN, M. van ; GUIBAL, E. (2005): Treatment of Ink Containing Wastewater by Coagulation Flocculation using Biopolymers. Entradas: Water SA : Volume 31 , 369-376. URL [Visita: 30.11.2011]
A coagulation-flocculation process, based on aluminium sulfate, is studied in this paper using Response Surface Methodology, in order to establish the optimum parameters to achieve a maximum suspensions removal. This methodology allows a treatment plant operator to determine easily, after a small number of trials, the optimum conditions to achieve maximum suspensions removal efficiency.
APOSTOL, G. ; KOUACHI, R. ; CONSTANTINESCU, I. (2011): Optimization of Coagulation-Flocculation Process with Aluminium Sulfate Based on Surface Methodology. Entradas: University Polytehnica of Bucharest Scientific Bulletin : Volume 73 , 77-84. URL [Visita: 30.11.2011]
This chapter examines the planning and design of new spaces and environments for child-friendly schools and sets out quality planning standards for improving existing schools and temporary structures used as schools. It focuses on location, design, construction, operation and maintenance of new child-friendly schools and the important factors for renovating and adjusting existing schools to make them child-friendly. The approach centres on the child, the main user of these learning spaces and environments, with the understanding that family and community participation is fundamental for best results.
UNICEF (2009): Child Friendly Schools. Location, Design and Construction. Entradas: UNICEF (2009): Child Friendly Schools. New York: . URL [Visita: 28.11.2011]
This book focuses on the health factors related to pathogenic organisms. The attempt is to assess and review evidences in relation to health impact and to discuss the findings based on epidemiological evidence, risk assessment and behavioural aspects and practices.
STENSTROEM, A. SEIDU, R. EKANE, M. ZURBRUEGG, C. (2011): Microbial Exposure and Health Assessments in Sanitation Technologies and Systems. (= EcoSanRes Series , 1 ). Stockholm: Stockholm Environment Institute (SEI) URL [Visita: 28.11.2011]
This special report lines out the challenges faced related to sanitation during the emergency response to the devastating earthquake in Haiti in January 2010. It also emphasises the importance of planning improved sanitation in the longer term to effectively reduce disease and to ensure dignity of the affected population.
IFRC (2010): Haiti. From Sustaining Lives to Sustainable Solutions: the Challenge of Sanitation. Special Report - Six Months on. Geneva: International Federation of Red Cross and Red Crescent Societies URL [Visita: 28.11.2011]
This article introduces advanced ozonisation systems delivered for treating drinking water and sewage, and a combined process employing ozone and hydrogen peroxide that is currently under development.
HIROTSUJI, Y. ; TETSUYA, T. (1996): Advanced Ozone Water Treatment Technology. Entradas: R&D Progress Report Mitsubishi Electric Advance: URL [Visita: 26.11.2011]
Three emerging treatment technologies, including membrane filtration, advanced oxidation processes (AOPs), and UV irradiation, hold great promise to provide alternatives for better protection of public health and the environment and thus are reviewed in this paper. The emphasis was placed on their basic principles, main applications, and new developments. Advantages and disadvantages of these technologies are compared.
ZHOU, H. ; SMITH, D.W. (2002): Advanced Technologies in Water and Wastewater Treatment. Entradas: Journal of Environmental Engineering and Science : Volume 1 , 247-264. URL [Visita: 26.11.2011]
This paper presents the lab scale wastewater treatment technology that can be used to obtain physicochemical and microbiological good quality water for reuse. This technology mainly consists of a combination of coagulation-flocculation, sedimentation and filtration stages and a final water ozonation. It was evaluated for different kinds of wastewaters: domestic, industrial, and fish processing plant.
VELIZ, E. ; LLANEZ, J.G. ; FERNANDEZ, L.A. ; BATALLER, M. ; HERNANDEZ, C. ; FERNANDEZ, I. ; ALVAREZ, C. (2005): Evaluation of a Wastewater Treatment Technology for Water Reuse. Entradas: IOA 17th World Ozone Congress-Strasburg: , 1-10. PDF
Water treatment plants produce a wide variety of waste products as well as safe drinking water. These residuals may be organic and inorganic compounds of liquid, solid, and gaseous form depending on the source of raw water and the type of treatment processes, commonly, coagulation/filtration, precipitate softening plant, membrane separation, ion exchange, and granular activated carbon.
TECHBRIEF (1998): Water Treatment Plants Residuals Management. Entradas: National Drinking Water Clearinghouse: URL [Visita: 26.11.2011]
The filter press is one of the oldest mechanical dewatering devices. Read more about it in this document.
DELTREIL, J.P. (2003): Mechanical Dewatering Using Filter Presses Technology. Limoges: Faure Equipment SA. [Accessed: 24.11.2011] PDF
This flyer describes the most important aspects and provides pictures of the Johnson belt filter press systems.
JOHNSONSCREENS (2011): Belt Press. New Brighton: Johnson Screen Inc. [Accessed: 24.11.2011] PDF
This document describes several steps of sludge treatment technologies such as sludge stabilisation, dewatering and incineration.
VIGNESWARAN, S. KANDASAMY, J. (n.y): Sludge Treatment Technologies. Paris: UNESCO-EOLSS (Encyclopedia Of Life Support Systems) URL [Visita: 24.11.2011]