Experimental determination of the characteristics of physico-chemical particles in air-scouring-membrane (microfiltration) backwash water produced during drinking water treatment

2015 ◽  
Vol 94 ◽  
pp. 714-720 ◽  
Author(s):  
No-Suk Park ◽  
Moon-Sun Kang ◽  
Woochang Jeong ◽  
Jong-Oh Kim
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Experimental Determination ◽  
Drinking Water Treatment ◽  
Physico Chemical

scholarly journals Physico-chemical treatment for the degradation of cyanotoxins with emphasis on drinking water treatment—How far have we come?

2018 ◽  
Vol 6 (4) ◽  
pp. 5369-5388 ◽  
Author(s):  
Pratik Kumar ◽  
Krishnamoorthy Hegde ◽  
Satinder Kaur Brar ◽  
Maximiliano Cledon ◽  
Azadeh Kermanshahi pour
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Chemical Treatment ◽  
Drinking Water Treatment ◽  
Physico Chemical

scholarly journals Drinking Water Treatment Plants in Turkey and Determination of Revision Needs

2019 ◽  
Vol 3 (2) ◽  
pp. 44-57
Author(s):  
Esra Giresunlu ◽  
Arife Özüdoğru ◽  
Fulya Yaycılı ◽  
Hilal Uflaz ◽  
Cenk GÜMÜŞKAYA ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Water Treatment Plants

Evaluation of a drinking water treatment process involving directly recycling filter backwash water using physico-chemical analysis and toxicity assay

RSC Advances ◽  
2016 ◽  
Vol 6 (80) ◽  
pp. 76922-76932 ◽  
Author(s):  
Bingwei Hou ◽  
Tao Lin ◽  
Wei Chen
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Conservation ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Pollutant Removal ◽  
Water Treatment Process ◽  
Physico Chemical ◽  
Filter Backwash Water

Recycling the filter backwash water of a drinking water treatment plant (DWTP) was considered as a feasible method to enhance the efficiencies of pollutant removal and water conservation.

scholarly journals The influence of electrogalvanic device on scaling

2013 ◽  
Vol 11 (5) ◽  
pp. 698-705 ◽  
Author(s):  
Marjana Simonič ◽  
Irena Ban
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Samples ◽  
Treatment Method ◽  
Aragonite Crystal ◽  
Physico Chemical ◽  
Before And After ◽  
Drinking Water Samples

AbstractThe use of an electrogalvanic device for scale neutralisation is descibed in this paper. Physico-chemical analyses were performed before and after the treatment. The results were compared with those obtained by using magnetic water treatment device. By measuring some individual parameters and the implementation of chemical analysis, the satisfactory functioning of the electrogalvanic device was demonstrated. The quality of drinking water did not change much after the water treatment method. The results of determination of calcium carbonate saturating index showed that the raw drinking water is in carbonate equlibrium as well as both treated water samples. The calcite/aragonite ratio was studied by means of microscopy and X-ray powder diffraction. Inspection of crystals formed during the experiments with microscopy indicated that aragonite crystal structure of the precipitates prevailed over the calcite stucture. The diffractograms showed that the share of aragonite increased after using the electrogalvanic device compared with raw drinking water samples where the share of calcite was higher.

scholarly journals Manganese removal processes at 10 groundwater fed full-scale drinking water treatment plants

2019 ◽  
Vol 54 (4) ◽  
pp. 326-337 ◽  
Author(s):  
I. L. Breda ◽  
L. Ramsay ◽  
D. A. Søborg ◽  
R. Dimitrova ◽  
P. Roslev
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Filter Material ◽  
Chemical Processes ◽  
Full Scale ◽  
Limited Effect ◽  
Water Treatment Plants ◽  
Physico Chemical ◽  
Removal Processes

Abstract Manganese (Mn) removal in drinking water filters is facilitated by biological and physico-chemical processes. However, there is limited information about the dominant processes for Mn removal in full-scale matured filters with different filter materials over filter depth. Water and filter material samples were collected from 10 full-scale drinking water treatment plants (DWTPs) to characterise the Mn removal processes, to evaluate the potential use of enhancers and to gain further insight on operational conditions of matured filters for the efficient Mn removal. The first-order Mn removal constant at the DWTPs varied from 10−2 to 10−1 min−1. The amount of Mn coating on the filter material grains showed a strong correlation with the amount of iron, calcium and total coating, but no correlation with the concentration of ATP. Inhibition of biological activity showed that Mn removal in matured filters was dominated by physico-chemical processes (59–97%). Addition of phosphorus and trace metals showed limited effect on Mn removal capacity, indicating that the enhancement of Mn removal in matured filters is possible but challenging. There was limited effect of the filter material type (quartz, calcium carbonate and anthracite) on Mn removal in matured filters, which can be relevant information for the industry when assessing filter designs and determining returns of investments. This article has been made Open Access thanks to the kind support of CAWQ/ACQE (https://www.cawq.ca).

Microbial activity in drinking water-associated biofilms

2013 ◽  
Vol 8 (2) ◽  
pp. 201-214 ◽  
Author(s):  
Anca Farkas ◽  
Mihail Dragan-Bularda ◽  
Vasile Muntean ◽  
Dorin Ciataras ◽  
Stefan Tigan
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Microbial Activity ◽  
Iron Reduction ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Bulk Water ◽  
Bulk Fluid ◽  
Physico Chemical

AbstractMicrobial biofilms from surfaces in contact with water may play a beneficial role in drinking water treatment as biological filters. However, detrimental effects such as biofouling (i.e., biocorrosion and water quality deterioration) may also occur. In this study microbiological processes and factors influencing the activity of bacteria in biofilms were investigated by conventional cultivation methods. The presence of bacteria belonging to different ecophysiological groups was assessed during drinking water treatment, in biofilms developed on concrete, steel and sand surfaces. Influences of the treatment process, type of immersed material and physico-chemical characteristics of raw/bulk water and biofilms upon the dynamics of bacterial communities were evaluated. Results revealed intense microbial activity in biofilms occurring in the drinking water treatment plant of Cluj. Ammonification, iron reduction and manganese oxidation were found to be the predominant processes. Multiple significant correlations were established between the evolution of biofilm bacteria and the physico-chemical parameters of raw/ bulk water. The type of immersed material proved to have no significant influence upon the evolution of microbial communities, but the treatment stage, suggesting that the processes applied restrict microbial growth not only in bulk fluid but in biofilms, too.

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