sewage treatment

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Infected fish were found in both exposure and control treatment groups in the sewagetreatment plants under study (table 1).
It is also possible that septic or sewagetreatment systems are probable environmental sources of giardia cyst contamination.
Heterotrophic systems may be of different size and complexity such as an island, most cities, an oyster reef or a sewagetreatment plant.
This one is about the provision of a sanitary infrastructure of central water supply, sewerage and sewagetreatment.
The income growth and rapid urbanization have outpaced the development of infrastructures, such as paved roads, public transportation equipment, and sewagetreatment systems.
The well-to-do would be better off with the general availability of clean air, clean water, and sewagetreatment.
These payments meet only a small part of the operation and maintenance costs of sewagetreatment plants.
Major cities and industries require sewagetreatment before discharge into rivers or large water bodies.
Although the next ten years saw great improvement and citizen input, the centralized, engineering solutions to sewagetreatment won out.
Similarly, virtually every major industrialized city, town, and village on earth has its own sewagetreatment plant.
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