Wastewater treatment plants are implementing various measures to manage excessive inflows during wet weather. These include constructing stormwater reservoirs, keeping pumps on standby, and developing methods to raise effluent quality.
Such measures may be more effective with reliable predictions of inflow volume.


We utilize proprietary TCBM technology to analyze historical and meteorological data in constructing prediction models for inflow volume in both dry and wet weather conditions.
Based on these prediction models and radar rainfall forecasts, the system can predict the inflow volume to the pump station and treatment plant up to 22 hours in advance.

	Historical data Rainfall forecasts Sewage inflow prediction model Data modeling and analysis		Dedicated PC
			Screen displaying inflow volume predictions, and rainfall forecasts ( *Click to enlarge )

This system can be used to estimate the volume of rainfall-derived infiltration and inflow (RDI&I) entering sewer pipes. This is done by taking the difference between actual sewage inflow volume in wet weather and the predicted sewage inflow volume in dry weather.

This technology forms the basis of the Infiltration and Inflow Investigation, another innovative solution for wastewater collection.

Notes (1) For predictions of 1 to 3 hours in advance, root mean square error is 7% or less, and over 95% of all prediction values are within ±17% maximum error. (2) Predictions of 4 to 22 hours in advance are provided as guidance information (3) System hardware consists of a PC, compact input device and communication device. (4) Displays both predicted and actual inflow volumes in real-time.

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