Environmental Services
http://www.practicallygreen.com
HOW TO MODEL A PROCESS
SEND PRACTICALLY GREEN
INPUT QUALITY
The raw data regarding the volume, and chemical characteristics of an effluent,
COD (Total, Soluble and Particle), BOD5 (Total, Soluble and Particle), SS, N, P, K, NH4 etc.
INPUT QUANTITY
Describe the flow characteristics (e.g. 10,000 galls influent 2 x a day monday to friday, plus a factory wash down on saturday morning, or daily sinusoidal input between 10 metric tonnes and 40 metric tonnes on a daily cycle 6 days a week)
OUTLINE PROCESS
e.g. Buffering tank, daf unit, aeration, sludge settlement, final effluent, sludge to thickener, mesophilic anaerobic digestion of thickened sludge. This can be with or without specific sizing of the individual modules which may already exist or be notional developments.
AND WE WILL SEND YOU
Process flow images to define processes and intermediate waste streams,
tabulated data
and a
MODEL OF THE FINAL EFFLUENT CHARACTERISTICS
A simulation of the final effluent quantity and quality (SS, BOD, COD, NH4...) for say 3000 hours (3months) or what ever time scale you need. This is a dynamic model and will enable you to assess the effect on the final effluent quality of shock loads, steady state conditions, sinusoidal (daily or weekly) loads. The other outputs are considered as well, sludge for disposal is characterised, biogas is characterised, and we will even put the biogas through a computer model of our ajax engines and will give a value for the electricity and hot water generated.
THE COST
Call us - you will be surprised just how cheap this quality service is - we charge purely on time ($50 an hour for computer time and doctoral level analysis ). By using large computers we can reduce processing times and costs.
ACCURACY
Whilst a model is only as good as the data that is fed to it and the basic model assumptions, we can provide guidelines to enable ground truth testing of effluent streams between processes that can be used to prove, calibrate and refine the models and give ever more precise predictions in the 'what if ' stage of investigation.
If you really do not know how to predict the effect of a shock loading or would like to model the effect of a power cut or intermediate process failure, or would like to improve the throughput of the works but don't know which process to expand or if you do cannot predict the consequences, then call us to discuss modelling your process. We can never say that we will be 100% accurate no engineer can, but a good waste water engineer would do these calculations manually and may take weeks or months on the calculations that our computers can do in days (and probably more accurately.)
All processes and data are treated in the strictest confidence.