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PubMed1987

[Hydrobotanical after-purification of effluents from a medical drug plant in winter].

The parameters of additional treatment of biologically pure antibiotic production sewage in winter were studied on a pilot model of a 3.72 m3 biopond with higher aquatic plants (Phragmites communis). Sufficiently high efficiency of the process of possible provision of the required sewage quality were shown. A mathematical model of the process based on the first order reaction equation was developed. Its application was estimated and the values of the equation constants were measured.

Drug Industry↗
PubMedDate not supplied

[Waterworks and public health in Ivory Coast].

In Ivory Coast, the provision for good drinking water has received priority attention since 1973. The National Water-works Programme which started in 1975, is progressing satisfactorily. All over the country, villages and towns are being equipped with hydraulic machines and other structures for the production and distribution of good drinking water. This has contributed in no small way to the control of certain diseases related to water pollution. The authors think however that a lot still needs to be done especially to inform and to educate the village communities and to control the quality of the drinking water. These actions should check water pollution and encourage people in the rural areas to drink portable pipe-borne water.

Cote d'Ivoire↗
PubMed1978

Viruses in water.

Attention is drawn in this paper to the increasing problem of viral contamination of water and shellfish, particularly since growing demands for available water resources by a rising world population and expanding industry will make the recycling of wastewater almost inevitable in the future. The problem of eliminating viruses pathogenic for man from water is considered in the light of present water treatment procedures, which are often inadequate for that purpose. Man may be exposed to waterborne viruses through the consumption of contaminated water, shellfish, or crops, as a result of recreational activities involving water, or from aerosols following the spraying of crops with liquid wastes. Physical and chemical methods of eliminating viruses from water are discussed.

Humans↗
PubMed1988

Use of oblique chest roentgenograms in detecting pleural disease in asbestos-exposed workers.

Oblique chest roentgenograms have been recommended by some for use in screening programs of asbestos-exposed workers to increase detection of pleural fibrosis not evident on posteroanterior (PA) films. As a screening test, identification of pleural abnormalities with oblique films is especially important in subjects without evidence of other asbestos-induced abnormalities on PA films, namely, parenchymal fibrosis. To evaluate the incremental value of oblique films in the identification of pleural fibrosis, a comparison was made between PA films read alone and PA films read with both oblique views in a systematic evaluation of 489 male pipefitters examined in a screening program. Analysis of the subsets of pipefitters with and without parenchymal fibrosis showed that 2.5% of workers with normal PA films (n = 326) and 13.0% of subjects with isolated parenchymal fibrosis on PA films (n = 46) had pleural fibrosis detectable only on oblique films. In only eight (1.6%) did the oblique view represent the sole evidence of an asbestos-related roentgenographic abnormality. We conclude that oblique films should not be routinely used in screening workers for evidence of asbestos-induced disease.

Adult↗
PubMed1988

[Intensive methods of sewage treatment].

The results of the study on intensive treatment of sewage are presented and the general approach to it is proposed. Formation of oxygen active forms in biological systems, their generation during physico-chemical treatment under definite conditions and interaction with organic substances provide higher purity levels in treatment of sewage.

Biodegradation, Environmental↗