In situ Denitrification of Drinking Water

1988 ◽  
Vol 20 (3) ◽  
pp. 215-219 ◽  
Author(s):  
V. Janda ◽  
J. Rudovský ◽  
J. Wanner ◽  
K. Marha

Pilot-plant and full scale studies of the in-situ biological denitrification of drinking water form the subject of this paper. Ethyl alcohol as a source of organic carbon was used in both cases. Good results were obtained during the pilot-plant study. The full-scale experiment was carried out as a system of four injection wells and one central collection well. Promising results were obtained when diluting water was recirculated into the injection wells to improve mixing of substrate in ground water. The efficiency of nitrate removal was about 50%.

1925 ◽  
Vol 29 (177) ◽  
pp. 404-458 ◽  
Author(s):  
R. A. Frazer

‘The Aerodynamical Characteristics of the Airship as Deduced from Experiments on Models’ was the subject selected by Dr. R. Jones for his R.38 Memorial Prize Paper. The essay surveys the present-day state of knowledge in airship research from the standpoint of the wind-tunnel.


2020 ◽  
Vol 177 ◽  
pp. 04003
Author(s):  
Sergey Prostov ◽  
Evgeniy Shabanov

This article presents the main results of the study of electrophysical processes occurring in the zone of electrical processing during the cleaning of soils from oil pollution. The main conclusions are formulated about the processes occurring in the electric processing zone by changing the relative electrical resistance of the soil, which was measured using microprobe sensors. A comparative analysis of the results of a laboratory experiment on the electrochemical cleaning of contaminated soil in a tank is carried out with the results of a full-scale experiment conducted on a plot of a soil mass in real conditions, but artificially contaminated with oil products (gasoline, used oil. Using single measurements of electrical resistivity by microprobe sensors, the spread of the pollutant in the soil was clarified , the relationship between the physical properties of the array and its electrical wire is established conductive properties. Confirmed high efficiency of this type of control in the study of complex processes occurring in the contaminated ground array.


2001 ◽  
Vol 251 (1-2) ◽  
pp. 29-48 ◽  
Author(s):  
S.T.S. Yuen ◽  
Q.J. Wang ◽  
J.R. Styles ◽  
T.A. McMahon

Author(s):  
Tania Ávila-Esquivel ◽  
José Pablo Aguiar-Moya ◽  
Edgar Camacho-Garita ◽  
Luis Loría-Salazar

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