Excess sludge removal & thickening
Continuous online monitoring of solids concentration for precise control of sludge discharge. This prevents undesirable hydraulic overload of the subsequent stages.
APPLICATIONS · SEWAGE TREATMENT PLANTS
Precise process measurement technology for sewage treatment works & wastewater management
Increase efficiency, reduce polymer consumption and optimise sludge dewatering with MWM tec
The cost-effective operation of modern wastewater treatment plants depends largely on precise, data-driven process control. Constantly changing influent loads, challenging sludge qualities and cost-intensive dewatering processes require comprehensive and reliable monitoring of solids concentration.
With its MicroSinus measurement system, MWM tec GmbH offers a solution for the harsh conditions of sewage treatment plant operations: using the microwave transmission method, you can continuously determine the dry solids content (TS content) and the density of sewage sludge in real time, directly within the process. This online monitoring complements laboratory reference data and provides continuous data for the cost-effective management of your sludge treatment line.
Key applications in the sewage treatment process
Our system can be flexibly installed on pipework and tanks and optimises key stages of your sludge treatment:
Control of sludge dewatering (centrifuges, presses)
Precise determination of the dry solids (TS) content in the feed to decanters, chamber filter presses or screw presses. The system enables the fully automatic, demand-based dosing of flocculants (polymers).
Digested sludge monitoring (digester management)
Continuous density measurement in the recirculation loop of the digestion tower. This ensures homogeneous mixing, prevents biological overfeeding and optimises agitator running times.
Your benefits at a glance
| Process challenge | MWM tec (MicroSinus) approach | Economic added value |
|---|---|---|
| High costs for polymers | Real-time TS measurement immediately prior to dewatering | Drastic reduction in polymer consumption through precise real-time dosing. |
| Wear caused by abrasive media | Wear-free in-line sensor technology with no moving parts | Minimised maintenance and downtime, even with sandy slurries. |
| Varying degrees of dewatering | Continuous volume measurement in the main stream | Maximised degree of dewatering, resulting in significantly lower landfill and transport costs (cake weight). |
| Measurement errors caused by deposits | Optically independent microwave transmission method | Reliable measurements regardless of turbidity, fat or sludge deposits on the pipe walls. |
WASTEWATER TREATMENT LEAFLET
Total solids measurement in wastewater treatment plants
The German wastewater treatment leaflet shows the measurement principle and installation examples for primary and digested sludge.
BROCHURE
MWMtec & MicroSinus
Measurement principle, applications and technical specifications in one brochure.
Primary clarification and primary sludge
Measuring points at the primary clarifier outlet and directly at the sludge withdrawal point.
Primary sludge
After the grinder
Primary clarifier outlet, after the grinder.
- Installation
- Pipework DN 200
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Primary sludge
Measuring fitting after the grinder
Primary clarifier outlet, after the grinder.
- Installation
- Measuring fitting DN 150
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Primary sludge
Primary clarifier outlet
Measuring point at the primary clarifier outlet.
- Installation
- Pipework DN 150
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Primary sludge
Directly at the primary clarifier
Measuring point directly at the outlet of the primary clarifier.
- Installation
- Pipework DN 150
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Primary sludge
Measuring fitting on the sludge outlet
Total solids measurement directly at the outlet – installation example 1.
- Installation
- Measuring fitting DN 150
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Primary sludge
Measuring fitting on the sludge outlet
Total solids measurement directly at the outlet – Installation example 2.
- Installation
- Measuring fitting DN 150
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Thickening
Total solids measurement after the pre-thickener and at the thickener outlet.
Primary sludge
After the pre-thickener
Measuring point after the pre-thickener.
- Installation
- Pipework DN 200
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Primary sludge
Thickener outlet
Measuring point at the thickener outlet.
- Installation
- Pipework DN 150
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Secondary clarification and digestion
Excess sludge at the secondary clarifier withdrawal point and measuring points at the digester.
Excess sludge
Sludge withdrawal from the secondary clarifier
Measuring point at the outlet of the secondary clarifier.
- Installation
- Measuring fitting DN 125
- Sensors
- Planar probes
- Measured variable
- Total solids (TS)
Primary sludge
Digester inlet
Inlet to the digester.
- Installation
- Pipework DN 200
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Sludge in the circulation pipe
Circulation at the digester
Circulation pipe from the digester.
- Installation
- Pipework DN 150
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Polymer dosing and dewatering
Measuring points for polymer dosing and polymer control upstream of the centrifuge.
Digested sludge
Before polymer dosing
Measuring point upstream of the polymer dosing unit.
- Installation
- Pipework DN 150
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Digested sludge
Polymer dosing in DN 65
Total solids measurement for polymer dosing.
- Installation
- Pipework DN 65
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Digested sludge
Polymer dosing in DN 150
Total solids measurement for polymer dosing.
- Installation
- Pipework DN 150
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Primary sludge
Centrifuge inlet
Total solids measurement at the inlet of the centrifuge for polymer control.
- Installation
- Measuring fitting DN 150
- Sensors
- Rod probes with flushing adapter
- Measured variable
- Total solids (TS)
Technical highlights for plant manufacturers and operators
The transmission principle detects the slurry within the measurement volume rather than just at its surface. The multi-frequency analysis provides the basis for continuous dry solids (TS) determination. The measured values can be integrated into the slurry control system via the specified industrial interfaces; the existing installation examples show pipework and measuring fittings with rod and planar probes.
Further applications
YOUR TRANSLATION TASK
Ready for process optimisation?
Take advantage of our many years of application expertise for your wastewater treatment plant. We would be happy to analyse your specific requirements and configure the optimal measurement system to ensure your success.