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High energy electron disinfection of sewage wastewater in flow systems

Abstract

The disinfection of effluent municipal wastewaters by high-energy electrons in flow systems was studied using an experimental apparatus which has the maximum treatment capacity of 10.8 m{sup 3}/h. An electron accelerator with an accelerating voltage of 2 MV was used. The electron beam current was controlled to deliver the desired doses ranging from 0.05 to 1 kGy. Treatment times were in the range from 0.0022 to 0.051 s. Preliminary experiments with batch system using Petri dish of 100 ml showed that the effectiveness of electron irradiation on inactivation of coliforms was not influenced significantly by factors such as pH, SS, COD, DO and irradiation temperature. The dose required to produce 99.9% kill in the total population presented in wastewater were markedly affected by the thickness of water exposure to electron irradiation; that is, 0.39, 0.4 and 0.44 kGy for the depth of 5, 6 and 7 mm, respectively. The data obtained after a suitable correction for the doses due to the depth dose distribution showed no deviation from an experimental survival curve. Experiments with flow system indicated no measureable effect of the flow rate of wastewaters on the efficiency of disinfection in the range from 0.5 to 3.5 m/s. (author).
Authors:
Miyata, T; Arai, H; Hosono, M; Tokunaga, O; Machi, S; [1]  Kondoh, M; Minemura, T; Nakao, A; Seike, Y [2] 
  1. Japan Atomic Energy Research Inst., Takasaki, Gunma (Japan). Takasaki Radiation Chemistry Research Establishment
  2. Sumitomo Heavy Industries Ltd., Tokyo (Japan)
Publication Date:
Jan 01, 1990
Product Type:
Conference
Report Number:
CONF-8904339-
Reference Number:
AIX-21-043438; EDB-90-076182
Resource Relation:
Journal Name: Radiation Physics and Chemistry (International Journal of Radiation Applications and Instrumentation Part C); (UK); Journal Volume: 35:1-3; Conference: 7. international meeting on radiation processing, Noordwijkerhout (Netherlands), 23-28 Apr 1989
Subject:
07 ISOTOPES AND RADIATION SOURCES; WASTE WATER; RADIOSTERILIZATION; DEPTH DOSE DISTRIBUTIONS; ELECTRON BEAMS; RADIATION DOSES; BEAMS; DOSES; HYDROGEN COMPOUNDS; LEPTON BEAMS; LIQUID WASTES; OXYGEN COMPOUNDS; PARTICLE BEAMS; RADIATION DOSE DISTRIBUTIONS; SPATIAL DOSE DISTRIBUTIONS; STERILIZATION; WASTES; WATER; 070205* - Radiation Sources- Industrial Applications, Radiation Processing- (1987-)
OSTI ID:
6914786
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0146-5724; CODEN: RPCHD
Submitting Site:
GBN
Size:
Pages: 440-444
Announcement Date:

Citation Formats

Miyata, T, Arai, H, Hosono, M, Tokunaga, O, Machi, S, Kondoh, M, Minemura, T, Nakao, A, and Seike, Y. High energy electron disinfection of sewage wastewater in flow systems. United Kingdom: N. p., 1990. Web.
Miyata, T, Arai, H, Hosono, M, Tokunaga, O, Machi, S, Kondoh, M, Minemura, T, Nakao, A, & Seike, Y. High energy electron disinfection of sewage wastewater in flow systems. United Kingdom.
Miyata, T, Arai, H, Hosono, M, Tokunaga, O, Machi, S, Kondoh, M, Minemura, T, Nakao, A, and Seike, Y. 1990. "High energy electron disinfection of sewage wastewater in flow systems." United Kingdom.
@misc{etde_6914786,
title = {High energy electron disinfection of sewage wastewater in flow systems}
author = {Miyata, T, Arai, H, Hosono, M, Tokunaga, O, Machi, S, Kondoh, M, Minemura, T, Nakao, A, and Seike, Y}
abstractNote = {The disinfection of effluent municipal wastewaters by high-energy electrons in flow systems was studied using an experimental apparatus which has the maximum treatment capacity of 10.8 m{sup 3}/h. An electron accelerator with an accelerating voltage of 2 MV was used. The electron beam current was controlled to deliver the desired doses ranging from 0.05 to 1 kGy. Treatment times were in the range from 0.0022 to 0.051 s. Preliminary experiments with batch system using Petri dish of 100 ml showed that the effectiveness of electron irradiation on inactivation of coliforms was not influenced significantly by factors such as pH, SS, COD, DO and irradiation temperature. The dose required to produce 99.9% kill in the total population presented in wastewater were markedly affected by the thickness of water exposure to electron irradiation; that is, 0.39, 0.4 and 0.44 kGy for the depth of 5, 6 and 7 mm, respectively. The data obtained after a suitable correction for the doses due to the depth dose distribution showed no deviation from an experimental survival curve. Experiments with flow system indicated no measureable effect of the flow rate of wastewaters on the efficiency of disinfection in the range from 0.5 to 3.5 m/s. (author).}
journal = {Radiation Physics and Chemistry (International Journal of Radiation Applications and Instrumentation Part C); (UK)}
volume = {35:1-3}
place = {United Kingdom}
year = {1990}
month = {Jan}
}