Daily Pumping Cost

Hi all, I am have designed a small CW system for treatment of greywater with a septic tank as pretreatment to settle out solids.

I need to pump from the septic tank to the CW four times a day (for batch loading). I would appreciate some help in calculating the pumping cost. The outline is as follows: 

• Total head = 4.5 m 
• Q= 8m3/d 
• Pump consumption = 0.45 kWh
• Electricity cost= N$2 / kWH
• Pump + motor efficiency = unknown 

Thanks in advance

Megan 

Taxonomy

• Pumping System Design
• Grey Water
• Septic Tank
• Pumps