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Testing the Performance of Pressure Sewer Systems to Reduce Wastewater Overflow


Affiliations
1 Christchurch City Council, Christchurch, New Zealand
2 Christchurch, New Zealand
     

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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.
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  • Testing the Performance of Pressure Sewer Systems to Reduce Wastewater Overflow

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Authors

Rahul R. Biswas
Christchurch City Council, Christchurch, New Zealand
Tripti R. Biswas
Christchurch, New Zealand

Abstract


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