Sewage Pump Comparisons

	Sewage Pump	Effluent Pump
Description	Centrifugal pump with open type impeller designed to handle suspended particles	Effluent pumps are used when the water being pumped may contain solids up to 2” in diameter.
Working principle	The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser/casing, from where it exits.	Pump in which fluid enters through the eye of an impeller and gains momentum inside the rotating vanes of the impeller and discharged through the volute casing.
Space	Separate platform required to keep the assembly	Kept in smaller area
Advantages	Preferred where raw wastewater/treated waste water from plants to be pumped Better for large scale application Maintenance free	Preferred where basement drainage / residential flooding to be done Effluent pumps are used when the water being pumped may contain solids up to 2 inch in diameter Trouble free performance
Disadvantages	Corrosion of impelled due to rough particle contact Clogging Heavy weight	Require maximum care for trouble-free operation Solid particle size in limited Used only for small scale application

	Sewage Pump	Sump Pump
Description	Centrifugal pump with semi open impeller designed to handle suspended particles	Small centrifugal light weight pump designed to drain the water stagnating at the basements
Working principle	The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser/casing, from where it exits.	Pumps the water out of the pit conveyed through the drains and discharges away from the basement of a building.
Space	Requires separate platform required to keep the assembly	Kept in smaller area
Application	Sewage water treatment plant, Dewatering	Sump pumps are used where the water table is above the foundation of a home
Advantages	Preferred where raw wastewater/treated waste water from plants to be pumped Better for large scale application Effluent pumps are used when the water being pumped may contain solids up to 3/4” in diameter Maintenance free	Preferred where the water stagnation occurs esp. in basements, equipment rooms, etc. Better for small scale application A sump pump is an automatic water pump Battery backup can be used in case of power cuts
Disadvantages	Solid particle size is limited Proper maintenance is required Heavy weight	Can be used for household application only Proper maintenance is required Can’t handle solid particles

	Sewage Pump	Grinder Pump
Description	Centrifugal pump with open type impeller designed to handle suspended particles	Grinder Pumps are designed to grind the solids from waste water into fine slurry at a high pressure and passes the slurry into the drains
Working principle	The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser/casing, from where it exits.	Pumps have grinding blades that grind the raw sewage into a slurry before passing it through the discharge line
Space	Separate platform required to keep the assembly	Kept in smaller area
Application	Sewage water treatment plant, Dewatering	Waste water conveyance
Advantages	Preferred where raw wastewater/treated waste water from plants to be pumped Better for large scale application Effluent pumps are used when the water being pumped may contain solids up to 3/4” in diameter	Preferred where the wastewater contains solid particles to be shredded into smaller particles to dispose that into sewer system Better for large scale application The pump will function automatically if the water reached its marked limit
Disadvantages	Solid particle size is limited Proper maintenance is required Heavy weight	Require maximum care for trouble-free operation Durability is less Needs the assistance of sewage pump to convey the slurry into sewer line

Sewage Pumps Overview