Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Design flow factors using socioeconomic based synthetic wastewater hydrographs for small communities
Reliable estimation of sewage flow rates is essential for the proper design of sewers, pumping stations, and treatment plants. The widely used design peaking factors for sewerage systems are usually related to the population served or the average sewage flow rate ignoring the difference between comm...
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis |
| Published: |
AUC Knowledge Fountain
2013
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613416630255616 |
|---|---|
| access_status_str | Open Access |
| author | Elnakar, Haitham Yousri |
| author_browse | Elnakar, Haitham Yousri |
| author_facet | Elnakar, Haitham Yousri |
| author_sort | Elnakar, Haitham Yousri |
| collection | Thesis |
| dc_rights_str_mv | The author retains all rights with regard to copyright. The author certifies that written permission from the owner(s) of third-party copyrighted matter included in the thesis, dissertation, paper, or record of study has been obtained. The author further certifies that IRB approval has been obtained for this thesis, or that IRB approval is not necessary for this thesis. Insofar as this thesis, dissertation, paper, or record of study is an educational record as defined in the Family Educational Rights and Privacy Act (FERPA) (20 USC 1232g), the author has granted consent to disclosure of it to anyone who requests a copy. |
| description | Reliable estimation of sewage flow rates is essential for the proper design of sewers, pumping stations, and treatment plants. The widely used design peaking factors for sewerage systems are usually related to the population served or the average sewage flow rate ignoring the difference between communities having same population but different socio-economic conditions and water use practice. In this study, a simulation model is developed to generate synthetic wastewater flow hydrographs resulting from a community with specific socio-economic conditions. The synthetic hydrographs are developed while retaining their commonly observed random behavior. The socioeconomic characteristics of a community are accounted for by the composition of the community and its social categories, the water use pattern of every category during the various daily activities (weekday and weekend), and the water use facilities (fixtures and appliances) available to the community. The model utilizes different water use patterns by every social group for every appliance during the different day types e.g. weekday and weekend. The use patterns account for the stochastic nature of use in terms of number of uses, duration of use and times of use in the day. Randomly generated hydrographs are generated for weekdays and weekends. The daily sewer hydrographs are transformed by hydraulic routing through the sump --pump to daily pumped flow hydrographs conveying wastewater to the treatment plant. One year of generated record of both hydrographs is statistically analyzed to derive two sets of flow factor curves to be used for the design of sewers, and the various components of the treatment plant. The flow factors are given in terms of the duration when the flow factor is sustained and the probability that the flow is not- . The proposed model was applied to a small community with certain socio-economic conditions and population and the resulting design peaking factors were obtained and compared to flow factors derived from a limited measurement program of the wastewater hydrographs generated by the community. The results indicate the usefulness of the proposed model in predicting probable flow hydrographs from selected communities with specific socio-economic setting and population. A parametric study is carried out to investigate the effect of the community population, class and socio-economic conditions on the design flow factors. |
| format | Thesis |
| id | oai:fount.aucegypt.edu:etds-2251 |
| institution | American University in Cairo (Egypt) |
| last_indexed | 2026-06-10T12:35:47.730Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from AUC Knowledge Fountain — bepress |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | AUC Knowledge Fountain |
| publisherStr | AUC Knowledge Fountain |
| record_format | dspace |
| source_str | AUC Knowledge Fountain — bepress |
| spelling | oai:fount.aucegypt.edu:etds-2251 Design flow factors using socioeconomic based synthetic wastewater hydrographs for small communities Elnakar, Haitham Yousri Reliable estimation of sewage flow rates is essential for the proper design of sewers, pumping stations, and treatment plants. The widely used design peaking factors for sewerage systems are usually related to the population served or the average sewage flow rate ignoring the difference between communities having same population but different socio-economic conditions and water use practice. In this study, a simulation model is developed to generate synthetic wastewater flow hydrographs resulting from a community with specific socio-economic conditions. The synthetic hydrographs are developed while retaining their commonly observed random behavior. The socioeconomic characteristics of a community are accounted for by the composition of the community and its social categories, the water use pattern of every category during the various daily activities (weekday and weekend), and the water use facilities (fixtures and appliances) available to the community. The model utilizes different water use patterns by every social group for every appliance during the different day types e.g. weekday and weekend. The use patterns account for the stochastic nature of use in terms of number of uses, duration of use and times of use in the day. Randomly generated hydrographs are generated for weekdays and weekends. The daily sewer hydrographs are transformed by hydraulic routing through the sump --pump to daily pumped flow hydrographs conveying wastewater to the treatment plant. One year of generated record of both hydrographs is statistically analyzed to derive two sets of flow factor curves to be used for the design of sewers, and the various components of the treatment plant. The flow factors are given in terms of the duration when the flow factor is sustained and the probability that the flow is not- . The proposed model was applied to a small community with certain socio-economic conditions and population and the resulting design peaking factors were obtained and compared to flow factors derived from a limited measurement program of the wastewater hydrographs generated by the community. The results indicate the usefulness of the proposed model in predicting probable flow hydrographs from selected communities with specific socio-economic setting and population. A parametric study is carried out to investigate the effect of the community population, class and socio-economic conditions on the design flow factors. 2013-02-01T08:00:00Z thesis application/pdf https://fount.aucegypt.edu/etds/1252 https://fount.aucegypt.edu/context/etds/article/2251/viewcontent/Design_20Flow_20Factors_20using_20Synthetic_20Socioeconomic_20Based_20Domestic_20Wastewater_20Hydrographs_20for_20Small_20Arid_20Communities_Final_20rev_20Haitham.pdf The author retains all rights with regard to copyright. The author certifies that written permission from the owner(s) of third-party copyrighted matter included in the thesis, dissertation, paper, or record of study has been obtained. The author further certifies that IRB approval has been obtained for this thesis, or that IRB approval is not necessary for this thesis. Insofar as this thesis, dissertation, paper, or record of study is an educational record as defined in the Family Educational Rights and Privacy Act (FERPA) (20 USC 1232g), the author has granted consent to disclosure of it to anyone who requests a copy. Theses and Dissertations AUC Knowledge Fountain Sewerage Rural Design and construction |
| spellingShingle | Sewerage Rural Design and construction Elnakar, Haitham Yousri Design flow factors using socioeconomic based synthetic wastewater hydrographs for small communities |
| title | Design flow factors using socioeconomic based synthetic wastewater hydrographs for small communities |
| title_full | Design flow factors using socioeconomic based synthetic wastewater hydrographs for small communities |
| title_fullStr | Design flow factors using socioeconomic based synthetic wastewater hydrographs for small communities |
| title_full_unstemmed | Design flow factors using socioeconomic based synthetic wastewater hydrographs for small communities |
| title_short | Design flow factors using socioeconomic based synthetic wastewater hydrographs for small communities |
| title_sort | design flow factors using socioeconomic based synthetic wastewater hydrographs for small communities |
| topic | Sewerage Rural Design and construction |
| url | https://fount.aucegypt.edu/etds/1252 https://fount.aucegypt.edu/context/etds/article/2251/viewcontent/Design_20Flow_20Factors_20using_20Synthetic_20Socioeconomic_20Based_20Domestic_20Wastewater_20Hydrographs_20for_20Small_20Arid_20Communities_Final_20rev_20Haitham.pdf |
| work_keys_str_mv | AT elnakarhaithamyousri designflowfactorsusingsocioeconomicbasedsyntheticwastewaterhydrographsforsmallcommunities |