Zobrazeno 1 - 10
of 32
pro vyhledávání: '"H. H. du Preez"'
Publikováno v:
Journal of Water Supply: Research and Technology-Aqua. 64:1-9
Total photosynthetic pigments (TPP) or chlorophyll- a analysis can be useful in selecting coagulant treatments that will improve phytoplankton removal and reduce treatment costs. The objectives of this study were to compare the efficacy of phytoplank
Publikováno v:
Water Supply. 14:820-828
The dinoflagellate, Ceratium hirundinella (C. hirundinella) cells are known to cause many problems when source water due for purification contains relatively high concentrations. The objective of this study was to investigate strategies for the effec
Autor:
L. Ferreira, H. H. du Preez
Publikováno v:
Water Supply. 12:250-257
World-wide, invertebrates are found in most drinking water networks; however, limited data and information are available on the occurrence of invertebrates throughout the purification process. During this investigation, temporal and spatial variation
Publikováno v:
Physics and Chemistry of the Earth, Parts A/B/C. 31:840-847
Twenty Largemouth yellowfish Labeobarbus kimberleyensis (Gilchrist and Thompson, 1913) were collected in the Vaal Dam in the vicinity of RAU Island (Groot Eiland). Muscle-, spinal cord- and liver tissue were removed from each fish and the intestine o
Publikováno v:
Water Science and Technology. 52:171-175
The implication of invertebrates found in drinking water distribution networks to public health is of concern to water utilities. Previous studies have shown that the bacteria associated with the invertebrates could be potentially pathogenic to human
Publikováno v:
Water Science and Technology. 48:97-102
Water quality is of prime importance to Rand Water’s core business of ensuring a reliable supply of good quality drinking water to more than 10 million people. Rand Water has, therefore, implemented a water quality monitoring programme of the sourc
Publikováno v:
South African Journal of Science and Technology, Vol 18, Iss 1, Pp 5-9 (1999)
Metal ions have become an increasing source of pollution in the natural waters of South Africa. This phenomenon is related to the increasing industrial, mining and agricultural activity along rivers.
Publikováno v:
Water SA; Vol 39, No 5 (2013); 739-750
Water SA, Volume: 39, Issue: 5, Pages: 739-749, Published: 2013
Water SA, Volume: 39, Issue: 5, Pages: 739-749, Published: 2013
Seven phytoplankton groups were recorded in the source water supplied to South Africa’s largest conventional drinking water treatment plant (DWTP). Two phytoplankton genera, Anabaena and Ceratium were identified as the problem-causing phytoplankton
Publikováno v:
Water SA, Volume: 38, Issue: 4, Pages: 487-504, Published: JAN 2012
Water SA; Vol 38, No 4 (2012); 487-504
Water SA; Vol 38, No 4 (2012); 487-504
Approaches that prioritise chemicals according to their importance as environmental contaminants have been developed by government agencies and private industries. However, it has been noticed that few approaches, such as one published by the United
Publikováno v:
Water SA. 35
Eighty largemouth yellowfish, Labeobarbus kimberleyensis, were collected between April 2005 and February 2006 with gill nets close to the island (26‹ 52, 249Œ S, 28‹ 10, 249Œ E) in the Vaal Dam. The fish were killed, weighed and their l