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Biswas, Rahul R.
- Testing the Performance of Pressure Sewer Systems to Reduce Wastewater Overflow
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Authors
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1 Christchurch City Council, Christchurch, NZ
2 Christchurch, NZ
1 Christchurch City Council, Christchurch, NZ
2 Christchurch, NZ
Source
Research Journal of Engineering and Technology, Vol 8, No 4 (2017), Pagination: 315-321Abstract
Wastewater overflow is one of the major sources of surface water pollution. A pressure sewer system is considered to be effective for reducing wastewater overflow by controlling the operation of pump stations during different storm events. It is a challenge to control pressure sewer systems efficiently and effectively especially in a complex sewer network. In a simple, well-defined sewer network, pressure sewers are highly effective in controlling sewer overflows in the downstream network. But in a complex sewer network pressure sewer systems may, in some cases, even increase the sewage overflows due to complexity in the network and area-wide variation of wet weather response in the network. This paper reviews the pressure sewer systems in post-earthquake Christchurch. The paper examines how reliable a pressure sewer system is in reducing wastewater overflows during different storm events. Hydraulic modelling tools have been used for this research.Keywords
Reduce Wastewater Overflow, Modelling Pressure Sewer, Performance of Pressure Sewer, Sewage, Water Pollution, Water Quality.References
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- Bhuyan PK. et al. Assessment of Quality of Ground Water and Surface Water of Choudwar Area in Cuttack District. Asian J. Research Chem. 2011; 4(8):1214-1220.
- Baghel PS. et al. Comparative Physico-Chemical Analysis of Mandakini River Water at Chitrakoot, District Satna (MP), India. Research J. Science and Tech. 2016; 8(2):71-76.
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- Ray Biswas R. Calibrating wastewater hydraulic model during post-earthquake rapid rebuild works. International Journal for Research in Applied Science and Engineering Technology. ISSN: 2321-9653. 2017; 5 (VI): 461–470.
- Ray Biswas R. Importance of Smart Monitoring Systems for Efficient Vacuum Sewer Performance and Modelling the Network. International Journal of Computer Sciences and Engineering. 2017; 5 (8): 247-251. (DOI: https://doi.org/10.26438/ijcse/v5i8.247251)
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- Modelling Earthquake Effects on Wastewater Overflow Pollutants
Abstract Views :383 |
PDF Views:0
Authors
Affiliations
1 Christchurch City Council, Christchurch, NZ
2 Christchurch, NZ
1 Christchurch City Council, Christchurch, NZ
2 Christchurch, NZ
Source
Research Journal of Science and Technology, Vol 9, No 4 (2017), Pagination: 663-668Abstract
Earthquakes can cause a variety of damage in a wastewater network. One of the key impacts of an earthquake is the increase in wastewater overflow due to high inflow and infiltration. Earthquake impacts on sewer overflow volume and sewer overflow water pollutants in Christchurch are reported in this paper. Two hydraulic models (the 2010 pre-earthquake model and the 2011 post-earthquake model) were used as part of this investigation. In Christchurch, earthquakes caused a 30% increase in wastewater overflow volume in a 1 in 3 year’s rainfall event whereas the sewage overflow volume had increased by around 18% and 15% during the 1 in 5 years and 1 in 10 year’s rainfall events respectively. The amount of water pollutants discharged via sewer overflow increased by around 40%, 12% and 8% in the 1 in 3 year’s, 1 in 5 years and 1 in 10 year’s rainfall events respectively. Though there was a significant increase in sewer overflow volume in the post-earthquake network, it did not mean water pollutants discharged via the sewer overflow points also increased significantly. The concentration of water pollutants decreased as the sewer overflow volume increased.Keywords
Earthquake Effects, Hydraulic Model, Water Quality, Wastewater Network, Wastewater Overflow Pollutants, Wastewater Pollutants.References
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- Balamurugan C. and Hebsibai LL. Studies on the Pollution Potential of Vaigai River at Madurai, India. Asian J. Research Chem. 5(9): September, 2012; Page 1108-1112.
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- Biswas RR. Calibrating wastewater hydraulic model during post-earthquake rapid rebuild works. International Journal for Research in Applied Science and Engineering Technology. 2017; V1 (5): 461–470.
- Biswas RR. Modelling Seismic Effects on a Sewer Network Using Info works ICM. Indian Journal of Science and Technology. 2017; ISSN (Print): 0974-6846, ISSN (Online): 0974-5645. in press. (Accepted for publication)
- Biswas RR. Quantifying the Performance of a Post-earthquake, Post-rebuild Wastewater Network Using Hydraulic Models. Indian Journal of Science and Technology. 2017; ISSN (Print): 0974-6846, ISSN (Online): 0974-5645. in press. (Accepted for publication)
- Biswas RR and Biswas TR. Hydraulic and Hydrologic Model Calibration and Validation for an Earthquake-Prone Three Waters Network. Unpublished.
- Wastewater Planning User Group. Code of practice for the hydraulic modelling of sewer systems. Version 3.001. Available from:http://www.ciwem.org/wp-content/uploads/2016/05/Code-of-Practice-for-the-Hydraulic-Modelling-of-Sewer-Systems.pdf
- Christchurch City Council. Waterways, Wetlands and Drainage Guide. Available from:https://ccc.govt.nz/environment/water/water-policy-and-strategy/waterways-wetlands-and-drainage-guide/