scholarly journals The study of potable water treatment process in Algeria (boudouaou station) -by the application of life cycle assessment (LCA)

Author(s):  
Messaoud-Boureghda Mohamed-Zine ◽  
Aksas Hamouche ◽  
Louhab Krim
Author(s):  
Oscar Orlando Ortíz Rodriguez ◽  
Raquel Amanda Villamizar-Gallardo ◽  
Rafael Guilhermo García

There is currently great concern about the processes that directly or indirectly contribute to the potential for global warming, such as stratospheric ozone depletion or acidification. In this context, and provided that treated water is a basic public utility in urban centers around the world as well as in some rural areas, its impact on the environment is of great interest. Therefore, this study applied the environmental methodology of Life Cycle Assessment (LCA) to evaluate the environmental loads of four potable water treatment plants (PWTPs) located in northeastern Colombia following the international guidelines delineated in ISO 14040. The different stages of the drinking water process were thoroughly assessed, from the catchment point through pumping to the distribution network. The functional unit was defined as 1 m3 of drinking water produced at the plant. The data were analyzed through the database Ecoinvent v.3.01, and modeled and processed in the software LCA-Data Manager. The results showed that in plants PLA-CA and PLA-PO, the flocculation process has the highest environmental load, which is mostly attributable to the coagulant agent, with a range between 47-73% of the total impact. In plants PLA-TON and PLA-BOS, electricity consumption was identified as the greatest impact source, with percentages ranging from 67 to 85%. Treatment processes and techniques, bioclimatic conditions and culturally driven consumption behavior varied from region to region. Furthermore, changes in treatment processes and techniques are likely to affect the environment during all stages of a plant’s operational cycle.


Waste water treatment is essential to re use of used water. In this paper we discuss about the waste water treatment , process and various techniques used for the treatment process. Waste water treatment is also important factor for safety of the environment conditions. To make the environment free from hazardous conditions and to make the sustainable environment. It is also controls different types of pollutions in the water. It is eco friendly in nature. Waste water engineering is the branch of Environmental engineering. which deals with occurance, distribution and treatment of waste water and recycle use of waste water. It also used for study of design construction of structures related to supply of potable water towards public. To prevent water borne diseases from the water. It is also used for disposal of waste water by selecting suitable locations . the study of waste water is also important to understand the various types of pollutions in the soil. This knowledge helps to better usage of water and disposal of the water


2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Adriana Muniz De Almeida Albuquerque

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.


2016 ◽  
Vol 15 (8) ◽  
pp. 1867-1872
Author(s):  
Florina Fabian ◽  
Silvia Fiore ◽  
Giuseppe Genon ◽  
Deborah Panepinto ◽  
Valentin Nedeff ◽  
...  

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