Two slowly biodegradable substrate hydrolysis model – will allow more accurate modelling in digesters receiving a mix of primary and waste sludge
Partial denitrification/Anammox (PdNA) process extension
Impact of metal salts on flocculation
PFAS (PFOA & PFOS, particulate & dissolved) model extension
Fixed low pH nitrification issue
Sumo4N: abiotic consumption of N2O reactions added
pH can be set (instead of calculated) locally in each PU which results in much faster runs in some situations and precipitation calculations are always active in digesters
Faster navigation among output tabs, dropdown list for selection
Faster loading and display of dynamic input tables
Improved custom code handling (“Save for support” command changed to “Save with custom code”; the user can specify which custom process code files to ship with the project when saving and which ones to import when opening)
Improved Add-on installer (available from the menu)
Model continuity checker included (available from the menu)
Don't use “Overwrite all initial conditions with current values” from the Advanced menu on projects built with biofilm units →Fixed in 22.1.0
For Boolean parameter inputs (e.g. SRT control), text entries are not accepted. Just type 0 for FALSE and 1 for TRUE →Fixed in 22.1.0
When modeling HPO systems, the low pH limit needs to be raised to inhibit nitrification, as there is a lot of bicarbonate (substrate) available even at lower pH values →Fixed in 22.1.0
Numerical solvers were much improved (all corners: pH, loops, steady-state, dynamics)
Controllers can be used in PFR units connecting to individual zones
Sumo 21 is compatible with Sumo 19 configurations in most cases (depending on the level of customization)
Sumo continues to be open process source based, but can be delivered with encrypted process library (i.e. in case a user provides a proprietary model to clients)
Sumo 21 will be available in the Korean, Chinese, Japanese, Spanish, German and Turkish languages
There are several usability improvements and fixes
Sumo 19 contains whole-plant biokinetic models with major improvements:
Calibrated for carbon capture in high rate processes (A-stages as low as 3-hour SRT)
New bio-P model for much wider application range (S2EBPR, deep ORP conditions)
Detailed sulfur reactions and sulfur-iron interactions in whole plant models
Aluminium, iron and polymer addition
Aeration calculations were significantly extended to include several types of fine and course bubble equipment as well as mechanical aeration. Surface DO intrusion in taken into account in all (e.g. anoxic) reactors
Controllers are now included in the Sumo 19 base package: Timer based on-off, ratio feed-forward, deadband, P, PI, PID, cascade, SRT and DO controllers
New tools are included: Scenarios (save several operating conditions in the same file), moving average, aeration tool
SBRs calculate reactor SRT automatically
Extended Sumo FAQ, Manual, Quick Tutorial, The Book of SumoSlang and Technical Reference
ExcelIO – Customizable operator interface – Your own plant model for operational scenarios
Scenarios can be created within one simulation – i.e. winter and summer conditions both can be saved in the same configuration and run by selecting the required condition. There is no need to create copies of the same configuration containing different sets of parameters, therefore updating the plant model becomes centralized and much easier to manage.
Saving state variables: Any simulation condition can be named, saved, and reloaded later. Concentrations can be copied from one effluent to an influent (i.e. sidestream model to mainstream model) or to a reactor content.
Sumo 19 is compatible with Sumo16 configurations in most cases (depending on the level of customization).
Sumo continues to be open process source based, but from Sumo19 can be delivered with encrypted process library (i.e. in case a user provides a proprietary model to clients).
Sumo 19 will be available in the Korean, Chinese, Japanese, Spanish and Turkish languages.
There are several usability improvements and fixes.
Configurations developed in Sumo 16 should update automatically and will work in the release version – if this is not the case, we provide an update service for our customers. Predictions may change slightly as the models have been improved since the release of Sumo 16.
Dynamic data tables must always have an entry at t = 0.
Not all features of the software are covered by prebuilt examples. Please contact us if you need a specific example configuration.
As with any complex software, it is good practice to save often. In case of unexpected behavior please contact us. It often helps to Exit Sumo, restart it and reload the model. Sumo will inform you if an Autosave (saved every five minutes by default) is available.