Difference between revisions of "Practitioner's Tool / Sewers Comparison"
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(Created page with "{| cellspacing="1" cellpadding="1" border="1" style="width: 100%" |- | '''Sewers'''<br/> | '''Appropriate Use'''<br/> | '''Relative Cost'''<br/> | '''Operations and Maintena...") |
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| − | [[File:Sewerpic.png | + | [[File:Sewerpic.png|100px|link=Design Features]]<br/> |
[[Design_Features|Sewers for Buildings]] | [[Design_Features|Sewers for Buildings]] | ||
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| − | [[File:Primtreatpic.png | + | [[File:Primtreatpic.png|100px|link=Settled Sewers]]<br/> |
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[[Settled_Sewers|Settled Sewers]] | [[Settled_Sewers|Settled Sewers]] | ||
| − | + | |Small to moderately-sized communities. Uses smaller pipes and can accommodate variable flows<br/> | |
| − | | Small to moderately-sized communities. Uses smaller pipes and can accommodate variable flows<br/> | + | | Moderate for the sewer pipes<br/> |
| − | | | ||
| − | Moderate for the sewer pipes<br/> | ||
| − | |||
High when considering the cost of septic or settling tanks at each building. | High when considering the cost of septic or settling tanks at each building. | ||
| − | + | | Low for the sewers<br/> | |
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| − | Low for the sewers<br/> | ||
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High for the septic tanks when considering the required desludging. | High for the septic tanks when considering the required desludging. | ||
| − | + | |High when community programs for desludging are provided<br/> | |
| − | | High when community programs for desludging are provided<br/> | ||
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| − | | style="text-align: center; vertical-align: middle" | | + | |style="text-align: center; vertical-align: middle" | |
| − | [[File:Consewer.png | + | [[File:Consewer.png|100px|link=Technology]]<br/> |
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[[Technology|Condominial Sewer]] | [[Technology|Condominial Sewer]] | ||
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| Small to medium-sized communities<br/> | | Small to medium-sized communities<br/> | ||
| Low - Allows sharing of sewer laterals, which reduces cost<br/> | | Low - Allows sharing of sewer laterals, which reduces cost<br/> | ||
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| − | [[File:Combined wet.jpg | + | [[File:Combined wet.jpg|100px|link=Combined Sewers]]<br/> |
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[[Combined_Sewers|Combined Sewers]] | [[Combined_Sewers|Combined Sewers]] | ||
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| Larger communities<br/> | | Larger communities<br/> | ||
| Moderate – groundwater, poor soils and variable slopes increase costs<br/> | | Moderate – groundwater, poor soils and variable slopes increase costs<br/> | ||
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| − | [[File:Pressure.png | + | [[File:Pressure.png|100px|link=Technology]]<br/> |
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[[Technology|Pressure Sewer Pumps]] | [[Technology|Pressure Sewer Pumps]] | ||
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| When variable slopes or distances will not allow gravity systems<br/> | | When variable slopes or distances will not allow gravity systems<br/> | ||
| High - Pump tanks, pump equipment, and the cost of electricity adds to cost<br/> | | High - Pump tanks, pump equipment, and the cost of electricity adds to cost<br/> | ||
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| − | ''[[Technology|Back to Technology | + | ''[[Practitioner's Tool / Technology and Operation|Back to Technology and Operation]'' |
Revision as of 22:13, 26 September 2016
| Sewers |
Appropriate Use |
Relative Cost |
Operations and Maintenance |
Effectiveness |
|
|
To transport wastewater from buildings to the treatment system |
Generally low but can increase based on length of pipes, soils, and topography. Cost can be minimized by placing treatment as close to buildings as possible |
Low for gravity sewers Moderate for pressurized systems |
High - Effective when designed and installed properly |
| Small to moderately-sized communities. Uses smaller pipes and can accommodate variable flows |
Moderate for the sewer pipes High when considering the cost of septic or settling tanks at each building. |
Low for the sewers High for the septic tanks when considering the required desludging. |
High when community programs for desludging are provided | |
| Small to medium-sized communities |
Low - Allows sharing of sewer laterals, which reduces cost |
Low when communities are responsible for maintaining their own laterals, as they are more careful to operate properly |
High when strong community participation and bottom-up planning is provided | |
| Larger communities |
Moderate – groundwater, poor soils and variable slopes increase costs |
Low - Periodic declogging is generally required |
Moderate – Generally effective at moving waste away from population centers | |
| When variable slopes or distances will not allow gravity systems |
High - Pump tanks, pump equipment, and the cost of electricity adds to cost |
Moderate - Pump systems are generally reliable, but trash traps and screens often require continuous maintenance |
High - When installed and operated properly |
[[Practitioner's Tool / Technology and Operation|Back to Technology and Operation]
