Statistical Analysis of Wastewater Flow Reductionby Roger G. Putty, James M. Montgomery, Consulting Engineers, Inc, Sacramento, United States,
M. Najmus Saquib, James M. Montgomery, Consulting Engineers, Inc, Sacramento, United States,
William O. Maddaus, James M. Montgomery, Consulting Engineers, Inc, Sacramento, United States,
Kayleen Warner, James M. Montgomery, Consulting Engineers, Inc, Sacramento, United States,
Abstract: Changes in urban water use patterns can significantly impact wastewater flow characteristics. With the increased emphasis on water conservation programs, understanding these impacts is fast becoming an essential element in the planning of wastewater facility expansions and additions. A statistical model was developed for purposes of predicting wastewater flow entering a wastewater treatment plant. By analyzing the model predictions in comparison to actual flows, wastewater flow reduction due to water conservation can be estimated. Presented here, as a case study, is a statistical model used to predict the wastewater flows entering the San Jose/Santa Clara Water Pollution Control Plant (WPCP). Long-term water conservation programs have been implemented by the City of San Jose, Office of Environmental Management. The study revealed the relationship between water conservation programs and wastewater flow reduction. In addition, the model provided key information for assessing future financial savings associated with operation and maintenance of the WPCP, and deferment of future capital investment costs required by the WPCP.
Subject Headings: Water conservation | Water flow | Water pollution | Wastewater management | Hydrologic models | Wastewater treatment plants | Model analysis
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