Assessing the Quality of Surface Water Collection Network in Wet and Dry Conditions, Case Study: West Watershed of Tehran

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MORIDI A.; BAGHERI M.R.; Zeynolabedin A.; NABI A.

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Journal Paper

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2021 | Volume:17 | Issue:3 Page(s): 20-37

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Information Journal Paper

Title

Assessing the Quality of Surface Water Collection Network in Wet and Dry Conditions, Case Study: West Watershed of Tehran

Author(s)

MORIDI A. | BAGHERI M.R. | Zeynolabedin A. | NABI A. | Issue Writer Certificate

Keywords

Surface Water Quality Modeling

SWMM

Dry and Wet Conditions

Maximum Allowable Discharge Load

Water Quality Variables

Abstract

One of the important issues in the management of municipal wastewater collection systems is how they deal with rainy conditions where the network discharge suddenly increases at certain intervals. The occurrence of such condition can cause damage to the network, reduce its performance and discharge sewage to the subsurface. In many urban wastewater collection networks sewage would be discharged to the main urban stormwater canals to overcome the situation which significantly reduce the quality of flow in those canals. In this study, the quality in stormwater collection network is modeled in the west watershed of Tehran in dry and rainy conditions. The SWMM software is used to simulate the quality of waterways. Qualitative modeling is performed for BOD, TDS, and TC variables for two scenarios of rainy and dry conditions. Due to the critical condition of DO in dry conditions, the maximum allowable load discharged to the urban stormwater collection network is determined so that the DO level remains at the standard level. This is important to prevent anaerobic condition which causes unpleasant odors. The results showed that in rainy conditions, TDS and BOD increased significantly and over the irrigation water standards. This is critical since the output of storm water network is being used for irrigation in the south western plains. It was also concluded that by reducing BOD to 50 mg/L, the DO status can be improved to avoid anaerobic conditions.

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APA: Copy

MORIDI, A., BAGHERI, M.R., Zeynolabedin, A., & NABI, A.. (2021). Assessing the Quality of Surface Water Collection Network in Wet and Dry Conditions, Case Study: West Watershed of Tehran. IRAN-WATER RESOURCES RESEARCH, 17(3 ), 20-37. SID. https://sid.ir/paper/961711/en

Vancouver: Copy

MORIDI A., BAGHERI M.R., Zeynolabedin A., NABI A.. Assessing the Quality of Surface Water Collection Network in Wet and Dry Conditions, Case Study: West Watershed of Tehran. IRAN-WATER RESOURCES RESEARCH[Internet]. 2021;17(3 ):20-37. Available from: https://sid.ir/paper/961711/en

IEEE: Copy

A. MORIDI, M.R. BAGHERI, A. Zeynolabedin, and A. NABI, “Assessing the Quality of Surface Water Collection Network in Wet and Dry Conditions, Case Study: West Watershed of Tehran,” IRAN-WATER RESOURCES RESEARCH, vol. 17, no. 3 , pp. 20–37, 2021, [Online]. Available: https://sid.ir/paper/961711/en

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