Sunlight inactivation of faecal coliforms in domestic wastewater
| Autor: | Petra Nienu, R. A. Banu, Mike A. Acheampong, Anthonia H. Andoh, M. O. Akrong, Jackson Adiyiah, E. D. O. Ansa |
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| Rok vydání: | 2015 |
| Předmět: |
0208 environmental biotechnology
Biomass Ocean Engineering 02 engineering and technology 010501 environmental sciences 01 natural sciences fluids and secretions Algae natural sciences Organic matter 0105 earth and related environmental sciences Water Science and Technology chemistry.chemical_classification Sunlight biology digestive oral and skin physiology fungi Environmental engineering food and beverages biology.organism_classification Pollution 020801 environmental engineering Fecal coliform Light intensity chemistry Wastewater Environmental chemistry Darkness |
| Zdroj: | Desalination and Water Treatment. 57:13979-13986 |
| ISSN: | 1944-3986 1944-3994 |
| DOI: | 10.1080/19443994.2015.1063010 |
| Popis: | The relationship between sunlight effect, algal biomass and faecal coliform inactivation in wastewater pond treatment systems is still not clearly understood. Increased pH and dissolved oxygen concentration in treatment ponds results in an increased destruction of faecal coliforms. Increased algal growth however results in a decreased destruction of faecal coliforms due to light attenuation. Algae also releases variable amounts and types of organic matter at various rates and quantities depending on environmental conditions and this can either aid or retard faecal bacteria destruction. We investigated the effect of algal density on faecal coliform destruction under field conditions in sunlight and darkness and how this can be affected by light intensity. In darkness, increased inactivation of faecal coliform occurred with increasing algal density. Rates of decay of faecal coliforms were much faster in sunlight than in darkness even in the absence of algae. In sunlight, rates of decay of faecal col... |
| Databáze: | OpenAIRE |
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