Assessing wastewater pollution from outdoor night markets and its impacts on river quality
Night markets are attractive tourist sites in Asian cities. However, the outdoor activities produce different types of pollutants. Air pollution and solid waste in night markets have received much attention, but wastewater pollution from night markets has rarely been examined. The untreated wastewat...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IWA Publishing
2022-11-01
|
| Series: | Water Science and Technology |
| Subjects: | |
| Online Access: | http://wst.iwaponline.com/content/86/9/2288 |
| _version_ | 1811225293328744448 |
|---|---|
| author | Shyh-Fang Kang Jen-Yang Lin Kean-Yip Chong Yu-Tse Lin Chi-Feng Chen |
| author_facet | Shyh-Fang Kang Jen-Yang Lin Kean-Yip Chong Yu-Tse Lin Chi-Feng Chen |
| author_sort | Shyh-Fang Kang |
| collection | DOAJ |
| description | Night markets are attractive tourist sites in Asian cities. However, the outdoor activities produce different types of pollutants. Air pollution and solid waste in night markets have received much attention, but wastewater pollution from night markets has rarely been examined. The untreated wastewater are discharged into roadside gutters and might contaminate receiving waterbodies. In this study, night markets in Taipei city, Taiwan, were surveyed to clarify the characteristics of wastewater. The sampled wastewater showed high levels of organic substances, oil and grease, and phosphorous but low levels of nitrogen compounds. In addition, the unit pollution loads in night market stalls were obtained. The BOD load of each stall in the night markets was 2,509 g/day, which is higher than the sewage emissions of 50 people. In order to know the impacts of night market wastewater on the receiving waterbody, a water quality model, the Water Quality Analysis Simulation Program (WASP), was used in the studied river, Keelung River. If night market wastewater could be collected (not discharged), the BOD concentration could be reduced by 9.8%, but the NH3-N and DO concentration could be reduced by less than 1%.
HIGHLIGHTS
Wastewater originating from outdoor night markets could clog roadside gutters and contaminate receiving waterbodies.;
Night market wastewater exhibited high levels of organic substances and P but low levels of N compounds.;
The BOD load of each stall was higher than the sewage emissions of 50 people.;
If night market wastewater could be collected, the BOD concentration in the Keelung River could be reduced by 9.8%.; |
| first_indexed | 2024-04-12T09:03:33Z |
| format | Article |
| id | doaj.art-255b21f971de4f768e1a90702d637486 |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-04-12T09:03:33Z |
| publishDate | 2022-11-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-255b21f971de4f768e1a90702d6374862022-12-22T03:39:09ZengIWA PublishingWater Science and Technology0273-12231996-97322022-11-018692288230210.2166/wst.2022.344344Assessing wastewater pollution from outdoor night markets and its impacts on river qualityShyh-Fang Kang0Jen-Yang Lin1Kean-Yip Chong2Yu-Tse Lin3Chi-Feng Chen4 Department of Water Resources and Environmental Engineering, Tamkang University, No.151, Yingzhuan Rd., Tamsui Dist., New Taipei City 251301, Taiwan Department of Civil Engineering, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan Department of Civil Engineering, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan Department of Civil Engineering, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan Department of Civil Engineering, National Taipei University of Technology, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan Night markets are attractive tourist sites in Asian cities. However, the outdoor activities produce different types of pollutants. Air pollution and solid waste in night markets have received much attention, but wastewater pollution from night markets has rarely been examined. The untreated wastewater are discharged into roadside gutters and might contaminate receiving waterbodies. In this study, night markets in Taipei city, Taiwan, were surveyed to clarify the characteristics of wastewater. The sampled wastewater showed high levels of organic substances, oil and grease, and phosphorous but low levels of nitrogen compounds. In addition, the unit pollution loads in night market stalls were obtained. The BOD load of each stall in the night markets was 2,509 g/day, which is higher than the sewage emissions of 50 people. In order to know the impacts of night market wastewater on the receiving waterbody, a water quality model, the Water Quality Analysis Simulation Program (WASP), was used in the studied river, Keelung River. If night market wastewater could be collected (not discharged), the BOD concentration could be reduced by 9.8%, but the NH3-N and DO concentration could be reduced by less than 1%. HIGHLIGHTS Wastewater originating from outdoor night markets could clog roadside gutters and contaminate receiving waterbodies.; Night market wastewater exhibited high levels of organic substances and P but low levels of N compounds.; The BOD load of each stall was higher than the sewage emissions of 50 people.; If night market wastewater could be collected, the BOD concentration in the Keelung River could be reduced by 9.8%.;http://wst.iwaponline.com/content/86/9/2288analog point pollution sourcesnight marketwastewater pollutionwater quality model |
| spellingShingle | Shyh-Fang Kang Jen-Yang Lin Kean-Yip Chong Yu-Tse Lin Chi-Feng Chen Assessing wastewater pollution from outdoor night markets and its impacts on river quality Water Science and Technology analog point pollution sources night market wastewater pollution water quality model |
| title | Assessing wastewater pollution from outdoor night markets and its impacts on river quality |
| title_full | Assessing wastewater pollution from outdoor night markets and its impacts on river quality |
| title_fullStr | Assessing wastewater pollution from outdoor night markets and its impacts on river quality |
| title_full_unstemmed | Assessing wastewater pollution from outdoor night markets and its impacts on river quality |
| title_short | Assessing wastewater pollution from outdoor night markets and its impacts on river quality |
| title_sort | assessing wastewater pollution from outdoor night markets and its impacts on river quality |
| topic | analog point pollution sources night market wastewater pollution water quality model |
| url | http://wst.iwaponline.com/content/86/9/2288 |
| work_keys_str_mv | AT shyhfangkang assessingwastewaterpollutionfromoutdoornightmarketsanditsimpactsonriverquality AT jenyanglin assessingwastewaterpollutionfromoutdoornightmarketsanditsimpactsonriverquality AT keanyipchong assessingwastewaterpollutionfromoutdoornightmarketsanditsimpactsonriverquality AT yutselin assessingwastewaterpollutionfromoutdoornightmarketsanditsimpactsonriverquality AT chifengchen assessingwastewaterpollutionfromoutdoornightmarketsanditsimpactsonriverquality |