Impact of temperature and dissolved oxygen level on the population dynamics of naidids and their reproduction in biological activated carbon filters: a life table demographic study
| Autor: | Yu-Qing Wu, Yuan-Nan Long, Kong Li, Jiang Changbo, Xiao-Bao Nie |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
education.field_of_study
010504 meteorology & atmospheric sciences Ecology media_common.quotation_subject 0208 environmental biotechnology Population Demographic study food and beverages 02 engineering and technology 01 natural sciences 020801 environmental engineering Environmental science Table (landform) Biological activated carbon Reproduction education 0105 earth and related environmental sciences Water Science and Technology media_common |
| Zdroj: | Water Supply. 19:1363-1370 |
| ISSN: | 1607-0798 1606-9749 |
| Popis: | Aquatic macro-organisms, such as naidids, propagate excessively in biological activated carbon (BAC) filters. This has become a troublesome problem for drinking water plants. For successful control of naidid contamination risk, it is necessary to determine the population dynamics under different environmental conditions within drinking water plants, with special emphasis on BAC filters. In this study, field studies of naidid distribution in a drinking water plant were conducted, and the effects of temperature and dissolved oxygen (DO) on naidid population dynamics were investigated using the life table method. The results indicated that naidid pollution in the water plant occurred seasonally and was induced by the excessive propagation of naidids in the BAC filters. Increased temperature and DO increased the naidid intrinsic rate of natural increase and decreased the naidid population doubling time. The life table method was also used to acquire the reproductive parameters of naidids in BAC filters based on simulative experiments. These results indicated that naidids can reproduce asexually in BAC filters, and the population doubling time was 12.60 days. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|