Rainwater Reuse in Urban Areas: A Mathematical Model and a Long-Term Modelling Approach

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Natural water resources are becoming increasingly limited due toglobal-scale climate change and water availability issues have become so severethat they must be addressed. Given these issues, reuse of wastewater andrainwater provides a promising way to cope with water shortages. This paperdescribes an investigation into the efficiency of rainwater usage systems.A conceptual model was built to assess the behaviour of rainwater tanks andtheir effectiveness in coping with water shortages. The study is based on a longterm simulation (12 years) of different rainwater reuse tank schemes. Theassociated reductions in residential freshwater demand (water reuse efficiency)and wet-weather runoff delivered to the sewer system (sewer discharge efficiency) were surveyed. The results clearly show that rainwater usage systemscan significantly reduce drinking water consumption. The specific volumesrequired for the reuse of rainwater are high; however, for local scale application,the specific volumes necessary are comparable to the reservoir volumes alreadyused to store freshwater resources during potable water shortage.
Lingua originaleEnglish
Titolo della pubblicazione ospiteSpringer Nature Switzerland AG 2019 G. Mannina (Ed.): UDM 2018, GREEN
Numero di pagine6
Stato di pubblicazionePublished - 2019

All Science Journal Classification (ASJC) codes

  • ???subjectarea.asjc.2100.2105???
  • ???subjectarea.asjc.2100.2102???
  • ???subjectarea.asjc.2300.2308???
  • ???subjectarea.asjc.2200.2209???


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