التفاصيل البيبلوغرافية
| العنوان: |
Responses of indicator bacteria to forest soil amended with municipal sewage sludge from aerated and non-aerated ponds |
| المؤلفون: |
Cloutier, C., Duff, J.-N., Beaulieu, C., Vasseur, L., Labelle, A., Ansseau, C. |
| المصدر: |
Environmental Pollution; 1996, Vol. 92 Issue 1, p67, 67p |
| مصطلحات موضوعية: |
BACTERIA, ENTEROCOCCUS faecalis, FORESTS & forestry, SEWAGE sludge, INDUSTRIAL wastes, WATER pollution |
| مستخلص: |
The survival of fecal and total coliform bacteria and Streptococcus faecalis (indicator bacteria) were monitored in experimental plots receiving various amounts of biological or dephos‐phatation municipal sewage sludge. Biological sludge was applied on coniferous and mixed regenerative forest soils. The results show that, except for total coliforms, there was little significant treatment effect on the indicator bacteria numbers in all of the sites. In most cases, there was a significant time effect, indicating that bacterial populations vary over time, according to environmental factors such as temperature, moisture, or nutrient level conditions. In total coliform bacteria, populations varied over time, but also in function of treatment levels. The present study suggests that, even if the standards of Quebec for sludge application are respected, there may be some risk for bacterial contamination depending on the types of sewage sludge and forest habitat. Although there is only a short‐term effect, high slopes can influence the movement of the indicator bacteria and may potentially cause some contamination problems. Implications for further study are considered. [ABSTRACT FROM AUTHOR] |
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