Identity of Mesophilic Anaerobic Sporeformers Cultured from Recycled Cannery Cooling Water

1983 ◽  
Vol 46 (5) ◽  
pp. 400-402 ◽  
Author(s):  
PAUL J. THOMPSON ◽  
MARY A. GRIFFITH

Chlorinated, recycled water for cooling of containers in still retorts was sampled over a 27-month period at one food processing plant. Of 274 samples taken, 28 contained mesophilic, anaerobic spores in numbers that ranged from 0.04–4.6/ml (MPN). Though all isolates were characterized as Clostridium species, 11% could not be matched with named species. Clostridium butyricum and Clostridium barati (synonyms: C. paraperfringens, C. perenne) comprised 55% of isolates. Excepting Clostridium sticklandii, which is neither proteolytic nor saccharolytic, all isolates were saccharolytic. This contrasted with the finding of both proteolytic and saccharolytic clostridial spores in the municipal water feeding the recycle water reservoir. An apparent selection for saccharolytic strains could not be explained on the basis of published resistance of anaerobic spores to free available chlorine.

ILR Review ◽  
2010 ◽  
Vol 63 (4) ◽  
pp. 606-626 ◽  
Author(s):  
Derek C. Jones ◽  
Panu Kalmi ◽  
Antti Kauhanen

2011 ◽  
Vol 140 (5) ◽  
pp. 906-915 ◽  
Author(s):  
B. P. M. ISER ◽  
H. C. A. V. LIMA ◽  
C. De MORAES ◽  
R. P. A. De ALMEIDA ◽  
L. T. WATANABE ◽  
...  

SUMMARYAn outbreak of meningococcal disease (MD) with severe morbidity and mortality was investigated in midwestern Brazil in order to identify control measures. A MD case was defined as isolation ofNeisseria meningitidis, or detection of polysaccharide antigen in a sterile site, or presence of clinical purpura fulminans, or an epidemiological link with a laboratory-confirmed case-patient, between June and August 2008. In 8 out of 16 MD cases studied, serogroup C ST103 complex was identified. Five (31%) cases had neurological findings and five (31%) died. The attack rate was 12 cases/100 000 town residents and 60 cases/100 000 employees in a large local food-processing plant. We conducted a matched case-control study of eight primary laboratory-confirmed cases (1:4). Factors associated with illness in single variable analysis were work at the processing plant [matched odds ratio (mOR) 22, 95% confidence interval (CI) 2·3–207·7,P<0·01], and residing <1 year in Rio Verde (mOR 7, 95% CI 1·11–43·9,P<0·02). Mass vaccination (>10 000 plant employees) stopped propagation in the plant, but not in the larger community.


2018 ◽  
Vol 224 ◽  
pp. 02079 ◽  
Author(s):  
Ilnur N. Madyshev ◽  
Oksana S. Dmitrieva ◽  
Andrey V. Dmitriev

Researches of blocks of sprinklers of cooling towers with jet-film devices are presented. The conducted numerical studies allow us to estimate the influence of the design and operating parameters of the proposed contact device on the efficiency of the process of cooling the recycled water. The increase in the average gas velocity leads to a more intense flow of water drops and more efficient cooling. To achieve high performance, it is necessary to create zones of drip interaction of phases with droplet sizes up to 100 µm at relatively low speeds of two-phase gas-liquid flow. Under such conditions, the drop can be cooled by more than 10°C within one contact stage. The proposed sprinkler units with jet-film contact devices will be able to achieve a lower level of cooling water temperatures in the cooling towers of industrial enterprises at relatively low operating costs.


2016 ◽  
Vol 171 ◽  
pp. 1-13 ◽  
Author(s):  
L. Lecoq ◽  
D. Flick ◽  
E. Derens ◽  
H.M. Hoang ◽  
O. Laguerre

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