Retention basin

From the inlet pump station there may be large varying flows, both on a daily and seasonal basis, which create uneven biological loadings on the treatment plant. If treatment processes are unable to handle heavy varying loadings, retention basins are required to equalize the incoming flows. Equalization tanks retain incoming wastewater to enable regulation of wastewater flows to the primary, secondary and tertiary treatment.

Retention basin mixing

Mixing to prevent sedimentation.

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Retention basin aeration

Aeration prevents settling of solids and even reduces odors.

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Retention basin pumping

Pumping for flow equalization into the treatment plant.

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