Water Decontamination at Water Treatment Plants. A New Approach

2020 ◽  
Keyword(s):  
Water Treatment ◽  
Water Decontamination ◽  
New Approach ◽  
Water Treatment Plants

scholarly journals Development of Rotary Magnetoferrite Treatment with Stirrers for Waste Water Treatment Plants to Reduce Excess Sludge

2012 ◽  
Vol 2012 ◽  
pp. 1-7
Author(s):  
Mahmudul Kabir ◽  
Masafumi Suzuki ◽  
Noboru Yoshimura
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Permanent Magnets ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Excess Sludge ◽  
New Approach ◽  
Water Treatment Plants ◽  
Waste Water Treatment Plants ◽  
The Relationship

A large amount of excess sludge is being produced in the waste water treatment plants (WWTPs), which is a serious problem in terms of economical and environmental problems. So, the experiments on reduction of excess sludge are carried out. We have introduced a new approach for reduction of excess sludge by using ferrite particles and permanent magnets. A rotary treatment plant was introduced which showed good possibilities of this method for application in the WWTPs. Stirrers hold a very important role in rotary magnetoferrite treatment as they directly get in touch with ferrite particles and sludge. In this paper, we have shown the relationship between the ferrite particles and stirrers. Again, the treatment was carried out for different amounts of activated sludge which shows that the smaller the amount, the better the treatment of sludge. This knowledge may pave the way for the reduction of excess sludge in WWTPs in practical fields.

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.

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