WASTEWATER TREATMENT PROCESSES
Wastewater collection and treatment have been developed and perfected using some of the most technically sound biological, chemical, mechanical and physical techniques available. Today’s public health are protected better today than ever before. The FUNCTION of a wastewater treatment plant is to speed up the process by which water cleanses itself – it’s essentially the same as what occurs naturally in a lake or stream.
Wastewater treatment processes involve 3 major steps:
To learn more about the full wastewater treatment process, watch the various videos on this page.
WASTEWATER SAMPLING AND TESTING
Technicians conduct regular tests to monitor the water entering the plant and to ensure that the plant is meeting its requirements to produce clean water. Samples are taken daily and hourly, with results being reported to government agencies.
ROTATING BIOLOGICAL CONTACTORS
Rotating biological contactors (RBCs) are a fixed-film biological watewater treatment technology that was widely applied in the 1970s and early 1980s.
RBC technology consists of circular sheets of inert plastic support media attached to a shaft and submerged approximately 40% in the wastewater process stream. The shaft is rotated so that the media is exposed intermittently to wastewater and air. This provides alternate exposure of the biomass growing on the plastic support media to wastewater, thereby allowing the metabolism of soluble and particulate organics and air, thus allowing oxygen transfer.
Excess biomass sloughs off the media and settles in a downstream clarifier (not shown in the above diagram).
[RBCs can be used for BOD5 removal, nitrification or both.]
WATER PURIFICATION PROCESSES
Wastewater collection and treatment have been developed and perfected using some of the most technically sound biological, chemical, mechanical and physical techniques available. Today’s public health are protected better today than ever before.
The following list provides a brief overview of the vast levels of processing that occur in a water treatment and purification plant…
Bacterial cells that aggregate in flocculation (below).
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WHAT HAPPENS WHEN YOU FLUSH?
Video of wastewater treatment process and how it helps minimize wastewater’s impact on the environment.
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