Biological Process Calculators
Access a growing suite of tools for solids balance, SRT, biological nutrient removal, aeration demand, alkalinity, recycle planning, permeate quality, and biomass concentration checks.
View calculator catalogue →Biological Process Design
Start with transparent mass-balance and preliminary sizing tools that connect biological operating assumptions to MBR design decisions.
MBR Quick Sizing Calculator
Estimate a solids-balanced bioreactor volume, calculated HRT, membrane area, and key process indicators from preliminary influent and operating inputs.
Open Quick Sizing Calculator →Core Design Tools
Engineering resources for moving from early process concept to design documentation and equipment decisions.
Design Checklist
A step-by-step guide covering MBR design from preliminary assessment through detailed engineering and equipment specification.
View checklist →Process Flow Diagrams
Standard P&ID templates and flow-diagram examples for submerged, external, and hybrid MBR arrangements.
View diagrams →Membrane Products Database
Search and compare commercial MBR membrane modules using key configuration and performance attributes.
Search database →Equipment Selection Guide
Guidance for selecting pumps, blowers, controls, and ancillary equipment for MBR installations.
View guide →Cost Estimation Framework
A structured approach to preliminary CAPEX and OPEX estimation, including membrane, energy, and chemical cost drivers.
View framework →MBR Knowledge Hub
Technical background on process fundamentals, nutrient removal, membranes, fouling, and operational practice.
Explore Knowledge Hub →Using the Design Toolkit
Use these resources for screening and preliminary engineering. Detailed MBR design should incorporate representative wastewater characterization, operating envelopes, membrane supplier requirements, redundancy, controls, and site-specific verification.
Design workflow
- Define treatment objectives.
- Establish biological assumptions.
- Use calculators for preliminary checks.
- Develop process and equipment design.