Causes of River Pollution

Klein, Louis

doi:10.1016/b978-0-408-33595-9.50010-8

Cited by 6 publications

(5 citation statements)

References 18 publications

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“…Since ammonia and phosphate were always below the limit of the methods used (0.040 and 0.030 rag/l, respectively), these are not listed in Table 3. These values are usually considered typical of water courses of low trophy (Klein, 1972), but the type and number of analyses used here do not permit a judgement on the ecological position of this river which could depend upon pollution from sewers and industries upriver from our site. Nutrient salts are certainly present in sufficient quantity to favour intensive algal growth.…”

Section: Physical and Chemical Measurementsmentioning

confidence: 98%

The development of benthonic phytocoenosis on artificial substrates in the ticino river

1975

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Changes in the taxonomic composition, chlorophyll a concentration, dry weight, percentage organic carbon and nitrogen and several indices of diversity, including "Margalef's index" were followed during the development of phytobenthonic communities on glass slides. These data suggest that, in this environment, the algal community resembles the nearby natural community after 4 weeks. The taxonomic development can be divided into two phases. During the first 2 weeks the phytocoenosis is dominated by a rather diverse and variable diatom assemblage. Later Cyanophyta dominate. The diversity decreases during colonization as reflected by all indices considered.

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Section: Physical and Chemical Measurementsmentioning

confidence: 98%

The development of benthonic phytocoenosis on artificial substrates in the ticino river

1975

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“…[3] Many industrial wastewaters have been used for bioassay/toxicity evaluation studies to understand the discharge capacity of the wastewater. The fishes have been considered as a useful index for the purity of water and no river should be considered in a satisfactory condition unless fishes thrive well in it.…”

Section: Introductionmentioning

confidence: 99%

Toxicity of Herbal Pharmaceutical Wastewater on Fish—Lebistes reticulatus(Peter)

Vanerkar

Satyanarayan

Dharmadhikari

2004

Journal of Environmental Science and Health, Part B

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Toxic effects of herbal pharmaceutical wastewater on common fish (Lebistes reticulatus) under laboratory conditions were studied. LC50 values for raw, neutralized, and physico-chemically treated effluent for 24, 48, 72, and 96 h ranged between 3.0-9.5%, 5.0-10.5%, and 35-41%, respectively. It was evident from the studies that physico-chemical treatment reduces the toxicity by more than 30%. This article discusses in detail the bioassay evaluation of raw, neutralized, and primary treated effluent. Physico-chemically treated effluent was further subjected to biological treatment by activated sludge system. Effluent from biological treatment revealed no toxic effect even after one month of exposure.

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“…The lowest values were recorded in station S2 of the Adir discharges (7.71 as average), which were probably so due to dissolved carbon dioxide from the metabolic reactions of microorganisms and organic matter contained in this agricultural waste waters [15]. The highest values are were recorded in station S1 with a maximum of 8.45 in July.…”

Section: Physicochemical Characterizationmentioning

confidence: 82%

Evaluation of the physicochemical and bacteriological quality of the Loukkos wetlands complex (Morocco)

et al. 2021

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The estuary of the Loukkos River is a complex ecosystem where various factors affect the quality of water. Our study is assessing the degree of water pollution in the complex of the lower Loukkos wetland’s surface water, which is situated at the river mouth of the Loukkos river in the eastern periphery of Larache city. To realize this objective, we collected water samplings from five area sites during summer period from May to August 2016 to analyse eight parameters physicochemical including dissolved oxygen (DO), temperature, pH, electrical conductivity, turbidity, salinity, suspended matter and nitrates. This study was accompanied by a bacteriological analysis relating to the enumeration of total coliforms and faecal coliforms, intestinal enterococci and reducing anaerobic sulphites. The analysis’s results shed lights on factors of contamination and collaborate to the physicochemical evaluation and bacteriologic quality of surface water. The quality indicators spatialization reveals interactions between the various phenomena acting on the functions of this Ramsar site.

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Causes of River Pollution

Cited by 6 publications

References 18 publications

The development of benthonic phytocoenosis on artificial substrates in the ticino river

The development of benthonic phytocoenosis on artificial substrates in the ticino river

Toxicity of Herbal Pharmaceutical Wastewater on Fish—Lebistes reticulatus(Peter)

Evaluation of the physicochemical and bacteriological quality of the Loukkos wetlands complex (Morocco)

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