Potable Water Treatment and Reuse of Domestic Wastewater in the CMHC Toronto ‘Healthy House’

2009 ◽  
pp. 176-176-12 ◽  
Author(s):  
AR Townshend ◽  
EC Jowett ◽  
RA LeCraw ◽  
DH Waller ◽  
R Paloheimo ◽  
...  
Keyword(s):  
Water Treatment ◽  
Potable Water ◽  
Domestic Wastewater ◽  
Potable Water Treatment

Determination of natural radionuclides in waste generated in the potable water treatment plants of the Zona da Mata of the state of Pernambuco- Brazil

2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Adriana Muniz De Almeida Albuquerque
Keyword(s):  
Water Treatment ◽  
Potable Water ◽  
Natural Radionuclides ◽  
The United States ◽  
Radioactive Material ◽  
Human Consumption ◽  
Radiological Protection ◽  
Natural Occurrence ◽  
Water Treatment Plants ◽  
Potable Water Treatment

The water purification procedure aims to obtain a product appropriate for human consumption, minimizing the presence of contaminants and toxic substances present in the water. Among these contaminants, some radionuclides of natural origin, such as uranium, thorium and their descendants, have been identified. Studies have shown that the stages of purification are quite effective in removing the radionuclides contained in water. The removal is due to co-precipitation of the radionuclides with the suspended materials and the precipitated material is accumulated and characterized as a Technologically Concentrated Natural Occurrence Radioactive Material (TENORM) by the United States Environmental Protection Agency (USEPA). This residue can present significant levels of radioactivity and, when discarded in the environment without any treatment, can generate a problem of environmental impact and a risk to the health of the population. In this way, some gamma emitters of the series of U, Th and the K-40 were determined in the residues generated at the Potable Water Treatment Plants – PWTPs in six municipalities of Pernambuco. The results obtain corroborate the classification of the residues generated in the PWTPs as concentrators of the radioactive components contained in the water supplied to the system and reinforce the need for the release to the environment, which is the usual way of disposal of this waste, to be carried out only after considering the radiological protection standards established.

A CFD-based simulation study of a large scale flocculation tank for potable water treatment

2010 ◽  
Vol 162 (1) ◽  
pp. 208-216 ◽  
Author(s):  
K. Samaras ◽  
A. Zouboulis ◽  
T. Karapantsios ◽  
M. Kostoglou
Keyword(s):  
Water Treatment ◽  
Simulation Study ◽  
Large Scale ◽  
Potable Water ◽  
Potable Water Treatment

Dissolved air flotation in drinking water production

2001 ◽  
Vol 43 (8) ◽  
pp. 9-18 ◽  
Author(s):  
T. Schofield
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Potable Water ◽  
Water Production ◽  
Process Technology ◽  
Dissolved Air Flotation ◽  
Drinking Water Production ◽  
Air Flotation ◽  
Potable Water Treatment ◽  
Dissolved Air

Dissolved Air Flotation (DAF) has become increasingly important in the field of potable water treatment, as a preferred option for treating upland and stored lowland waters. This paper outlines the development of dissolved air flotation (DAF) in potable water treatment, the benefits and disadvantages and the recent advances that has taken the process technology from an art to a science.

Volatile Organic Compounds in Water at Thirty Canadian Potable Water Treatment Facilities

1982 ◽  
Vol 65 (6) ◽  
pp. 1370-1374
Author(s):  
Rein Otson ◽  
David T Williams ◽  
Peter D Bothwell
Keyword(s):  
Water Treatment ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Potable Water ◽  
Treated Water ◽  
Liquid Liquid Extraction ◽  
Volatile Organic ◽  
Treatment Facilities ◽  
Benzene Toluene ◽  
Potable Water Treatment

Abstract A static headspace technique and previously developed and evaluated dynamic headspace and liquid-liquid extraction techniques were applied in a survey of volatile organic compounds in water at 30 Canadian potable water treatment facilities. Of the 43 compounds investigated, 27 compounds were detected in the water samples. Chloroform and bromodichloromethane occurred most frequently in treated water, and trichloroethylene, tetrachloroethylene, 1,2-dichloroethane, dichloromethane, benzene, toluene, ethylbenzene, and the xylenes occurred frequently in both treated and raw water. Only chloroform occurred frequently at levels above 10 μg/L in treated water. Generally, higher levels of organic compounds were found during August-September than during November-December.

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