It is said that waste management on board ship is technically a full-time job for the ship’s crew. The sewage waste produced onboard is treated in a sewage treatment plant on ships. This video explains the marine sewage treatment plant working principle with animation for easy understanding. The waste produced by some types of ships can go in thousands of tons on a daily basis. This waste can be divided into operational generated waste such as oil waste, air pollution, cargo residue etc. and human-generated waste such as garbage and sewage.
The sewage waste produced onboard is treated in sewage treatment plant on ship and the quantity produced depends on the number of crew members and the type of ship. A large cruise ship can produce about 170,000 gallons of sewage on a daily basis. On an average of 0.01 to 0.06 m3 of sewage is produced per person in a day.
The Sewage waste produced on the ship can further be divided into two categories; Blackwater and Grey Water.
Together they are called as wastewater.
The black water comprises the following wastes produced on a ship:
- Waste generated from drainage and in any other form from toilets and urinals
- Waste generated from drainage of a medical dispensary, sickbay, etc. via wash basins, wash tubs and scuppers located in such premises
- Drainage from the cargo hold of living animals; or other wastewaters when mixed with the drainages of such spaces
he Grey Water produced on Ship comprises of:
- Waste generated from drainage of dishwasher and washbasin in the galley
- Waste generated from drainage of cabin showers, bath and washbasin drains
- Waste generated from drainage of laundry
- Wastewater from interior deck drains
- Refrigerator and air conditioner condensate
Check out this video to learn how a Marine Sewage Treatment Plant (biological type) and its parts function on ships. Do Like, share this video and comment What do you want to see next?
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