scholarly journals Nanoparticles in Wastewater Treatment

2021 ◽  
Author(s):  
Farid Alizad Oghyanous

Water plays a crucial role in every animate life. There are a multitude of problems that can be occurred without water; thereafter, mankind’s lives can be extinct. Several solutions should be implemented in order to protect water supplies and to treat water used in industries. Among solutions, wastewater treatment is sounded economical and convenient way to overcome water scarcity. Physical, chemical, biological, and mixed treatment systems provide ample opportunity to use water over and over again. However, by using nanotechnology in these systems wastewater treatment can reach much more quality and overcome their drawbacks. Nano-membranes in MBR technology is one of most appropriate treatment technologies that have such potential to postpone water shortage until several years.


2003 ◽  
Vol 3 (4) ◽  
pp. 89-96 ◽  
Author(s):  
S. Sipala ◽  
G. Mancini ◽  
F.G.A. Vagliasindi

In this study a tool for the calculation of costs of different wastewater treatment and reuse scenarios has been developed. This tool, called Evaluation of Wastewater Treatment and Reuse Option (E-WA-TRO), was designed to have as end-users public administrators, water management authorities, and professionals that, in a direct and immediate manner, can automatically obtain, for a particular reuse alternative, the fundamental information for a feasibility study. In order to develop E-WA-TRO an overview was conducted of the international, national and regional regulations on water reuse and a synopsis of the possible reuse alternatives and of the appropriate treatment processes was prepared. Moreover, costs were obtained using national and international published data for the different treatment processes that might be required for the various reuse alternatives. The system has been created as a web site, in order to guarantee the highest availability and a wide diffusion and the possibility of an easy implementations of future updates and upgrades. Specifically, even non-expert user can easily navigate trough the site and use the tool to evaluate, within the national and international legal frameworks, various reuse alternatives as well as the appropriate treatment technologies and related costs.



2011 ◽  
Vol 7 (1) ◽  
pp. 59-69 ◽  
Author(s):  
João Paulo Borges Pedro ◽  
Maria Cecília Rosinski Lima Gomes ◽  
Ana Claudeíse Silva do Nascimento


1994 ◽  
Vol 30 (5) ◽  
pp. 87-95 ◽  
Author(s):  
Susan E. Murcott ◽  
Donald R. F. Harleman

In the past decade, the development of polymers and new chemical technologies has opened the way to using low doses of chemicals in wastewater treatment. “Chemical upgrading” (CU) is defined in this paper as an application of these chemical technologies to upgrade overloaded treatment systems (typically consisting of conventional primary plus biological treatment) in Central and Eastern European (CEE) countries. Although some of the chemical treatment technologies are proven ones in North America, Scandinavia, and Germany, a host of factors, for example, the variations in composition and degree of pollution, the type of technologies in use, the type and mix of industrial and domestic sewage, and the amount of surface water, had meant that the viability of using CU in CEE countries was unknown. This report describes the first jar tests of CU conducted during the summer of 1993. The experiments show CU's ability to improve wastewater treatment plant performance and to potentially assist in the significant problem of overloaded treatment plants. Increased removal of BOD, TSS, and P in the primary stage of treatment is obtained at overflow rates above 1.5 m/h, using reasonably priced, local sources of metal salts in concentrations of 25 to 50 mg/l without polymers.



1999 ◽  
Vol 39 (8) ◽  
pp. 177-184 ◽  
Author(s):  
Derin Orhon ◽  
Seval Sözen ◽  
Erdem Görgün ◽  
Emine Ubay Çokgör ◽  
Nazik Artan

Coastal tourist areas should be classified as environmentally sensitive areas. Effective nutrient control should be implemented to safeguard the quality of receiving waters in these areas. In this context, the applicable discharge limitations are reviewed with specific reference to European directives and criteria developed for small coastal residential areas in Turkey are reported; wastewater characterization and its impact on treatment technology selection is reviewed; appropriate treatment technologies are evaluated in terms of selecting new applications and upgrading and retrofitting existing systems.





2007 ◽  
Vol 372 (2-3) ◽  
pp. 361-371 ◽  
Author(s):  
A GOBEL ◽  
C MCARDELL ◽  
A JOSS ◽  
H SIEGRIST ◽  
W GIGER


2012 ◽  
Vol 535-537 ◽  
pp. 2201-2208
Author(s):  
Yong Wang ◽  
Jie Nian Jie ◽  
Zhi Yong Li ◽  
Li Guo Wang ◽  
Jiang Wu ◽  
...  

Oily sewage is one of the wastes produced in the oil industry production process and its quantity has been increasing year by year, which influences the environment and human health severely. Electric flocculation method is one of the wide application electrochemical treatment technologies for the oily wastewater treatment at home and abroad, which has higher efficiency than other technologies at the aspect of the organic pollutants degradation. A simulative experiment device dealing with heavy oil sewage by the electric flocculation method has been designed in this paper. The mechanism of the electric flocculation method in removing organic matter of the heavy oil sewage by analyzing the change of the composition and content of the organic matter in water samples before and after the process of the electric flocculation has been studied. Research results show: the carbon/tin dioxide electrode is better than the carbon/ ruthenium dioxide electrode in removing organic matter; most alkanes matters in the oily wastewater have been removed in the dispersing oil form by the electric flocculation; as the current density increases, the types and quantity of the response organic matter can be improved while types of the new synthetic organics increase. At the same time, this paper provides a theory support in specific optimization of the electricity flocculation flotation in oily wastewater treatment technology and process.



2012 ◽  
Vol 40 (9) ◽  
pp. 926-932 ◽  
Author(s):  
Adalberto Noyola ◽  
Alejandro Padilla-Rivera ◽  
Juan Manuel Morgan-Sagastume ◽  
Leonor Patricia Güereca ◽  
Flor Hernández-Padilla


Sign in / Sign up

Export Citation Format

Share Document