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8862 search results found
Coagulation and Flocculation of Wastewater in Textile Industry using Chitosan

This paper describes experiments using chitosan coagulant (a natural organic polyelectrolyte) on textile industry wastewater. The results obtained proved that chitosan successfully flocculates the anionic suspended particles and reduces the levels of Chemical Oxygen Demand (COD) and turbidity in textile industry wastewater.

ABU HASSAN, M.A. ; LI, T.P. ; NOOR, Z.Z. (2009): Coagulation and Flocculation of Wastewater in Textile Industry using Chitosan. In: Journal of Chemical and Natural Resources Engineering: Volume 4 , 43-53. URL [Accessed: 24.05.2019]
Improving Filtrate Quality Using Agro based Materials as Coagulant Aid

This research assesses the agro based materials like Surjana seed (Moringa oleifera), Nirmali seed (Strychnos pototorum) and maize (Zeemays) as a coagulant aid in conjunction with alum to determine their efficacy in water treatment. Experiments have been conducted simulating a conventional water treatment train consisting of coagulation-flocculation-settling and granular media filtration. They found that filtrate quality has improved with the use of agro-based materials.

RAGHUWANSHI, P.K. ; MANDLOI, M. ; SHARMA, A.J. ; MALVIYA, H.S. ; CHAUDARI, S. (2002): Improving Filtrate Quality Using Agro based Materials as Coagulant Aid. In: Water Quality Research Journal of Canada: Volume 37 , 745-756. URL [Accessed: 24.05.2019] PDF
Flocculant/Disinfectant Powder

A two-page factsheet on PUR flocculant and disinfectant powder with field and lab, containing information on effectiveness, advantages and limitations and implementation examples.

CDC ; USAID (2008): Flocculant/Disinfectant Powder . (= CDC Household Water Treatment Options in Developing Countries Factsheets ). New York: Center for Disease Control and Prevention (CDC) and United States Agency for International Development (USAID) URL [Accessed: 24.05.2019]
Home Water Testing

Should I have my water tested? The answer to this question depends on several factors. It concerns your health and the health of your family, so you need to know some basic facts.

U.S. EPA (2005): Home Water Testing. Washington DC: United States Environmental Protection Agency (U.S. EPA) URL [Accessed: 24.05.2019]
Application of Indigenous Materials in Drinking Water Treatment

In this study, volcanic ash and Moringa oleifera (M. oleifera) were investigated as indigenous materials for drinking water treatment based on problems identified at Kampala and Masaka water treatment plants in Uganda.

KALIBBALA, H.M. (2007): Application of Indigenous Materials in Drinking Water Treatment. Stockholm: Royal Institute of Technology (KTH) URL [Accessed: 24.05.2019]
PUR

A four-page factsheet containing product information on the procedure of using PUR flocculant and disinfectant powder, its treatment efficiency, operating criteria and other relevant information’s related to PUR.

CAWST (2009): PUR. Calgary: Centre for Affordable Water and Sanitation Technology (CAWST). Household Water Treatment and Safe Storage Fact Sheets URL [Accessed: 24.05.2019]
Reduction of cholera in Bangladeshi villages by simple filtration

This research was carried out in Matlab, Bangladesh in collaboration with the International Centre for Diarrhoeal Disease Research, Bangladesh. They found significant filtering of zooplankton (i.e. copepods) and colonial phytoplankton from household water by nylon and sari filtration, as well as reduction of cholera cases in the studied villages.

COLWELL, R.R. ; HUQ, A. ; ISLAM, M.S. ; AZIZ, K.M.A. ; YUNUS, M. ; KHAN, N.H. ; MAHMUD, A. ; SACK, R.B. ; NAIR, G.B. ; CHAKRABORTY, J. ; SACK, D.A. ; RUSSEK-COHEN, E. (2003): Reduction of cholera in Bangladeshi villages by simple filtration. In: Proceedings of the National Academy of Sciences of the United States of America (PNAS): Volume 100 , 1051-1055. URL [Accessed: 24.05.2019]
Modelling of Micropollutant Removal by Ozonation and Chlorination in Potable Water Treatment

This report describes the building up of a new simulator for chlorination and ozonation. It aims at giving a clear overview of the investigation fields related to modeling of oxidation for water purification. The model proposed is adaptable to on-site conditions.

MANDEL, P. (2007): Modelling of Micropollutant Removal by Ozonation and Chlorination in Potable Water Treatment. In: TECNEAU FP: Volume 6 URL [Accessed: 23.05.2019]
Ozonization of Purified Water Systems
STUCKI, S. ; SCHULZE, D. ; SHUSTER, D. ; STARK, C. (2005): Ozonization of Purified Water Systems. In: Pharmaceutical Engineering: Volume 25 , 1-7. URL [Accessed: 23.05.2019]
Comparison of Energy Requirements of Conventional Ozonation and the AOP O3/H2O2 for Transformation of Target Micropollutants in Diverse Matrices

This document compares the energy requirements for the removal of micropollutants in drinking water treatment plants by ozonation and O3/H2O2. The energy requirements for both treatments are in a similar range however O3/H2O2 reduces the contact time and bromated formation.

KATSOYANNIS, I.A. ; GUNTEN, U. von (n.y): Comparison of Energy Requirements of Conventional Ozonation and the AOP O3/H2O2 for Transformation of Target Micropollutants in Diverse Matrices . In: Techneau Deliverable D2: URL [Accessed: 23.05.2019]
Ozone Water Treatment Application and Design

Presentation on different ozone generators, processes design and monitoring.

SACCO, A. (2009): Ozone Water Treatment Application and Design. In: Spartan Environmental Technologies LLC.: URL [Accessed: 23.05.2019]
Peroxone (Ozone/Hydrogen Peroxide)

This chapter of EPA Guidance Manuel provides a lot of scientific information on Peroxone chemistry and applications such as disinfection and organics degradation.

EPA (1999): Peroxone (Ozone/Hydrogen Peroxide). In: EPA Guidance Manual, Alternative Disinfectants and Oxidants: URL [Accessed: 23.05.2019]