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Combined Sewer Overflow (CSO)

Level
Combined Sewer Overflow (CSO)

Overview

Large Combined Sewer Overflows (CSOs) protect the wastewater treatment plant from a capacity overload during heavy rain. The precipitation is temporarily stored and then delivered to the treatment plant at a reduced rate. If the stormwater basin cannot hold the accumulating quantities of water, part of it is discharged. Due to legal requirements, such operational events and discharged water quantities must be measured and documented. A level sensor provides the required measurement data.

Operating Conditions

Measuring Task
Level measurement
Measuring Point
Overflow basin
Medium
Rainwater
Measuring Range
0 … 5 m
Temperature
+10 ... +30 °C
Pressure
0 … 0 bar

Challenges

  • Fouling, condensation, inundation

Benefits

  • Reliable: High operational reliability even when subjected to inundation
  • Cost effective: Reliable measurement and maintenance-free operation
  • User friendly: Simple setup and adjustment

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