Method and system for analyzing the effect of inflow and infiltration on a sewer system
First Claim
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1. A method of determining the effect of precipitation on flow within a sewer network, comprising:
- collecting data representative of a measured rain quantity over a first time interval at a first location, wherein the first time interval has a duration that is less than a twenty-four-hour period;
maintaining, in a memory, data representative of a modeled rain response at a second location over a second time interval, the second time interval having a duration that is longer than the duration of the first time interval;
calculating, in real time, a scaled rain response, the scaled rain response comprising a function of the modeled rain response and the measured rain quantity; and
reporting, in real time, the scaled rain response.
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Abstract
A method and system for determining the effect of precipitation on flow within a sewer network includes identifying a modeled response of the sewer to a precipitation event. Once the modeled response is identified, scaled responses to future precipitation events may be predicted, in real time, by measuring intervals of the precipitation event and calculating the scaled response as a function of the modeled response and the precipitation quantity measured during the precipitation event.
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Citations
19 Claims
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1. A method of determining the effect of precipitation on flow within a sewer network, comprising:
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collecting data representative of a measured rain quantity over a first time interval at a first location, wherein the first time interval has a duration that is less than a twenty-four-hour period;
maintaining, in a memory, data representative of a modeled rain response at a second location over a second time interval, the second time interval having a duration that is longer than the duration of the first time interval;
calculating, in real time, a scaled rain response, the scaled rain response comprising a function of the modeled rain response and the measured rain quantity; and
reporting, in real time, the scaled rain response. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of predicting the effect of precipitation on flow within a sewer network, comprising:
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collecting data representative of a first measured rain quantity over a first time interval at a first location;
creating, using a processor, a plurality of possible rain responses, each possible rain response comprising a distribution of possible flow volumes at a second location over a second time interval, the second time interval being longer than the first time interval;
measuring, using a flow monitor, a measured flow volume distribution at the second location over the second time interval;
comparing, using the processor, the plurality of possible rain responses to the measured flow volume distribution;
selecting, using the processor, a modeled rain response, the modeled rain response being the possible rain response that most closely corresponds to the measured flow volume distribution; and
storing the modeled rain response, the first measured rain quantity, and the first time interval in a memory. - View Dependent Claims (12, 13, 15, 16, 17, 18)
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14. The method of claim 111 wherein the selecting step comprises performing a goodness of fit test on the measured flow volume distribution and the plurality of possible rain responses.
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19. A sewer network flow analysis system, comprising:
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a processor;
a memory in communication with the processor; and
a rain gauge in communication with the processor; and
wherein the processor is programmed to accept, from the rain gauge, data representative of a measured rain quantity over a first time interval that is less than a twenty-four-hour period;
wherein the memory maintains data representative of a modeled rain response at a location in a sewer network over a second time interval, the second time interval having a duration that is longer than the duration of the first time interval;
wherein the processor is further programmed to calculate, in real time, a scaled rain response comprising a function of the modeled rain response and the measured rain quantity; and
wherein the processor is further programmed to report, in real time, the scaled rain response.
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Specification