WASTEWATER SECONDARY TREATMENT
From the primary settling tanks, effluent
flows by gravity to the two trickling filters. each trickling
filter consists of a round bed with various sized rocks. Primary
effluent is sprinkled over the rocks and allowed to trickle through
the bed. Bacteria and other microorganisms attached to the rocks
oxidize organic material in the wastewater. The bacteria convert
waste in the water to harmless biosolids.
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This is the final clarifier.
Here, the water is processed and organisms are released into it to purify
it. |
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This is the sludge thickener, where, obviously,
the sludge is thickened as the water is evaporated out. |
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These are the digesters, which
process the solids so that they can be made into fertilizer. . |
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These are the chlorine tanks, where
chlorine is released into the water to kill remaining bacteria before
it is released into the East Branch of the Perkiomen Creek |
Chemicals are used in purifying the water
for human use. One such chemical is called cationic polymer. The
polymer causes small, sticky particles named floc to appear in
water and attract/capture dirt particles in the water. The weight
of both the polymer and the dirt particles cause the combined
mass to drop to the bottom during the sedimentation process .
Chlorine is used to kill bacteria. Testing of the water is done
constantly to insure the water being returned to the creek meets
all of the requirements.
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An in-house lab allows for constant monitoring of the
water quality. |
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Several liquid samplers are used to test the water. |