Development and application of a mathematical model for calculating the discharge of non-standard thin-plate weirs in urban combined sewer overflow systems: a case study
The aim of this study is to address the issue of difficulty in evaluating the combined sewer overflow (CSO) pollution effectively, especially for the monitoring of overflow from non-standard thin-plate weirs (NTPWs). In order to construct a discharge calculation mathematical model (DCMM) of NTPWs in...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IWA Publishing
2024-02-01
|
| Series: | Journal of Hydroinformatics |
| Subjects: | |
| Online Access: | http://jhydro.iwaponline.com/content/26/2/368 |
| _version_ | 1797205114913554432 |
|---|---|
| author | Ming Tang Yuze Wu Qianchen Xie Hui Chen Wenbin Xu |
| author_facet | Ming Tang Yuze Wu Qianchen Xie Hui Chen Wenbin Xu |
| author_sort | Ming Tang |
| collection | DOAJ |
| description | The aim of this study is to address the issue of difficulty in evaluating the combined sewer overflow (CSO) pollution effectively, especially for the monitoring of overflow from non-standard thin-plate weirs (NTPWs). In order to construct a discharge calculation mathematical model (DCMM) of NTPWs in an urban combined sewer overflow system (UCSOS), which can be used to construct a real-time monitoring and early warning system, a physical model constructed firstly for obtaining hydraulic characteristic sets under three flow conditions (free, submerged, pressurized flow). Then, the coefficient function expressions are obtained under three flow conditions through genetic algorithm (GA) fitting, and a DCMM of UCSOS is established subsequently. The results indicate that DCMM exhibits high accuracy, with mean relative error (MRE) at 0.0326, root mean square error (RMSE) at 1.569, and Nash–Sutcliffe efficiency (NSE) coefficient at 0.9387. The DCMM can not only evaluate the discharge capacity under different flow conditions, but also be used to realize reliable and convenient discharge monitoring. Although the DCMM constructed in this case is not universal, the modeling method of combining physical models with GA is an effective new approach to evaluate the discharge capacity of NTPW, which also holds value for application in other cities.
HIGHLIGHTS
We obtained data by conducting physical model experiments and used GA algorithm to fit expressions of the coefficient function under three flow conditions respectively to constructed the DCMM.;
The DCMM can not only evaluate the discharge capacity under different flow conditions, but also be used to realize reliable and convenient discharge monitoring for NTPWs.;
A real-time monitoring and early warning system based on the DCMM is constructed to meets the issue of difficulty in evaluating the combined sewer overflow pollution.; |
| first_indexed | 2024-04-24T08:45:59Z |
| format | Article |
| id | doaj.art-feca109da3d44ee5adffc40a14ecddbb |
| institution | Directory Open Access Journal |
| issn | 1464-7141 1465-1734 |
| language | English |
| last_indexed | 2024-04-24T08:45:59Z |
| publishDate | 2024-02-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Journal of Hydroinformatics |
| spelling | doaj.art-feca109da3d44ee5adffc40a14ecddbb2024-04-16T13:37:12ZengIWA PublishingJournal of Hydroinformatics1464-71411465-17342024-02-0126236838510.2166/hydro.2024.094094Development and application of a mathematical model for calculating the discharge of non-standard thin-plate weirs in urban combined sewer overflow systems: a case studyMing Tang0Yuze Wu1Qianchen Xie2Hui Chen3Wenbin Xu4 School of Hydraulic & Ecological Engineering, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China School of Hydraulic & Ecological Engineering, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China School of Hydraulic & Ecological Engineering, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China School of Hydraulic & Ecological Engineering, Nanchang Institute of Technology, Nanchang, Jiangxi 330099, China Nanchang Urban Planning and Design Institute, Nanchang, Jiangxi 330038, China The aim of this study is to address the issue of difficulty in evaluating the combined sewer overflow (CSO) pollution effectively, especially for the monitoring of overflow from non-standard thin-plate weirs (NTPWs). In order to construct a discharge calculation mathematical model (DCMM) of NTPWs in an urban combined sewer overflow system (UCSOS), which can be used to construct a real-time monitoring and early warning system, a physical model constructed firstly for obtaining hydraulic characteristic sets under three flow conditions (free, submerged, pressurized flow). Then, the coefficient function expressions are obtained under three flow conditions through genetic algorithm (GA) fitting, and a DCMM of UCSOS is established subsequently. The results indicate that DCMM exhibits high accuracy, with mean relative error (MRE) at 0.0326, root mean square error (RMSE) at 1.569, and Nash–Sutcliffe efficiency (NSE) coefficient at 0.9387. The DCMM can not only evaluate the discharge capacity under different flow conditions, but also be used to realize reliable and convenient discharge monitoring. Although the DCMM constructed in this case is not universal, the modeling method of combining physical models with GA is an effective new approach to evaluate the discharge capacity of NTPW, which also holds value for application in other cities. HIGHLIGHTS We obtained data by conducting physical model experiments and used GA algorithm to fit expressions of the coefficient function under three flow conditions respectively to constructed the DCMM.; The DCMM can not only evaluate the discharge capacity under different flow conditions, but also be used to realize reliable and convenient discharge monitoring for NTPWs.; A real-time monitoring and early warning system based on the DCMM is constructed to meets the issue of difficulty in evaluating the combined sewer overflow pollution.;http://jhydro.iwaponline.com/content/26/2/368data-drivengenetic algorithmmonitoring systempollution controlscenario-based modeling |
| spellingShingle | Ming Tang Yuze Wu Qianchen Xie Hui Chen Wenbin Xu Development and application of a mathematical model for calculating the discharge of non-standard thin-plate weirs in urban combined sewer overflow systems: a case study Journal of Hydroinformatics data-driven genetic algorithm monitoring system pollution control scenario-based modeling |
| title | Development and application of a mathematical model for calculating the discharge of non-standard thin-plate weirs in urban combined sewer overflow systems: a case study |
| title_full | Development and application of a mathematical model for calculating the discharge of non-standard thin-plate weirs in urban combined sewer overflow systems: a case study |
| title_fullStr | Development and application of a mathematical model for calculating the discharge of non-standard thin-plate weirs in urban combined sewer overflow systems: a case study |
| title_full_unstemmed | Development and application of a mathematical model for calculating the discharge of non-standard thin-plate weirs in urban combined sewer overflow systems: a case study |
| title_short | Development and application of a mathematical model for calculating the discharge of non-standard thin-plate weirs in urban combined sewer overflow systems: a case study |
| title_sort | development and application of a mathematical model for calculating the discharge of non standard thin plate weirs in urban combined sewer overflow systems a case study |
| topic | data-driven genetic algorithm monitoring system pollution control scenario-based modeling |
| url | http://jhydro.iwaponline.com/content/26/2/368 |
| work_keys_str_mv | AT mingtang developmentandapplicationofamathematicalmodelforcalculatingthedischargeofnonstandardthinplateweirsinurbancombinedseweroverflowsystemsacasestudy AT yuzewu developmentandapplicationofamathematicalmodelforcalculatingthedischargeofnonstandardthinplateweirsinurbancombinedseweroverflowsystemsacasestudy AT qianchenxie developmentandapplicationofamathematicalmodelforcalculatingthedischargeofnonstandardthinplateweirsinurbancombinedseweroverflowsystemsacasestudy AT huichen developmentandapplicationofamathematicalmodelforcalculatingthedischargeofnonstandardthinplateweirsinurbancombinedseweroverflowsystemsacasestudy AT wenbinxu developmentandapplicationofamathematicalmodelforcalculatingthedischargeofnonstandardthinplateweirsinurbancombinedseweroverflowsystemsacasestudy |