Description
BM Advanced Multi-Purpose Respirometers
Advanced respirometry system for monitoring biological processes
BM systems are laboratory analyzers designed for the management, design, and optimization of biological wastewater treatment processes. They allow controlled replication and analysis of biomass behavior, providing reliable data for operational decision-making and modeling.
Main Technical Features
Structure and Hardware
- Compact, low-maintenance analyzer
- Maintenance-free oxygen sensor (no membrane or electrolyte replacement required)
- Direct measurement of dissolved oxygen (DO)
- Available in single- or dual-reactor configurations
- Optional system for special biomasses:
- MBBR biofilm
- Granular biomass
Process Parameter Control
- Automatic temperature control (integrated or external)
- pH monitoring and control
- ORP monitoring
- Ability to modify test conditions in real time
Measured and Calculated Parameters
- OUR (Oxygen Uptake Rate)
- SOUR (Specific Oxygen Uptake Rate)
- bCOD, rbCOD, sbCOD
- U (substrate utilization rate)
- q (specific rate)
- Rs, Rsp, CO (oxygen consumed)
Advanced Features
- Automatic calculation of biological parameters
- Continuous analysis with:
- Instantaneous values
- Min/max values
- Moving average
Operating Modes
- Static tests (OUR/SOUR over selected intervals)
- Cyclic tests (with programmable DO threshold)
- Dynamic tests (continuous analysis of substrate degradation)
Data and Test Management
- Simultaneous visualization of results (charts and tables)
- Comparison of multiple saved tests
- Respirogram overlay
- Data output compatible with modeling software (e.g., GPS-X, BioWin)
Applications:
Biological Process Optimization
- Determination of actual oxygen requirement (AOR)
- Optimization of dissolved oxygen (DO) levels
- Reduction of plant energy consumption
Biomass Monitoring and Control
- Evaluation of bioaugmentation effectiveness
- Monitoring of biological activity over time
- Automatic estimation of BOD₅ (with calibration)
Operational Parameter Optimization
- F/M ratio (organic loading rate)
- Sludge retention time (SRT)
- Sludge recirculation (RR)
Advanced Biological Processes
- Nitrification
- AUR, SAUR
- Required hydraulic retention time
- Nitrification capacity
- Denitrification
- rbCOD demand
- NUR estimation
Analysis of anoxic and anaerobic processes
- Study of the influence of:
- Temperature
- pH
- Oxygen
- Identification of optimal conditions and operational limits
Toxicity Testing
- Rapid screening on specific biomass
- Comparison with reference compounds
Modeling and Simulation
- Direct support for simulation software
- Calculation of kinetic parameters for biomass:
- Heterotrophic
- Autotrophic
Software
The system includes dedicated integrated software that allows:
- Full control of tests and parameters
- Automatic calculation of all major biological indicators
- Real-time data visualization (charts and tables)
- Test comparison and database management
- Data export for external modeling
- Aggiornamenti automatici via internet

