Pollution at Sea – A global problem
Pollution at Sea is caused as shipping lines do not want to have to pay large amounts of money to dispose of their waste when they can dump it over the side.
As a business we have looked to provide several answers to cope with waste on ships
Port Vision & Marine provide marine aerobic digesters for food waste. They are plumbed into the ships system to dispose of any waste water and CO2 which comes from the machine. After 72 hours the waste virtually disappears leaving just bones which are auto sealed into a bio disposable bag for disposal on land. These units are ideal for small to medium sized vessels,
This is not an anaerobic system which produces gas under high pressure. This is a safe small, efficient means of quickly disposing of food waste.
We provide Marina sewage from ships treatment systems for collecting waste for when a yacht or motor cruiser comes into harbour. Rather than pumping out into the marina, which then gets washed out to sea.
Pollution at Sea. Larger Cruise Ship Systems
For an ocean going liner with thousands of people abroad the amount of sewage, grey water and food waste requiring to be disposed of creates a problem of huge magnitude. We have now developed a system which takes all of these waste streams. The disposed food waste and ship sewage is digested by up to 85% leaving small amounts left.
The grey water – which comes from showers, washing machines, hand basins etc and water from the sewage is processed and cleaned up sufficiently to allow it to be used as wash down on board ship.
The residue is processed through the system.
Port waste systems to remove pollution at sea.
Waste from a ship is considered as risky and charged as Hazardous waste
Ships that come into port of all types, whether a small liner through to a bulk carrier have the same basic need. If they have not already swilled out at sea, (which is illegal), they will need to clean out their open exhaust scrubbers. In addition empty their bilges which may have 25,000 litres of oily water inside. Many tankers will need to wash the residue or scum from their tanks if taking on a different cargo
Washed into the sea
AT present there are some 3000 plus ships that have exhaust scrubbers. Only 64 have closed loop systems. The rest pump metals and sulphur sludge into the sea. You cannot see this happening as the outlet is near the sea.
Ships also need to empty their sewage tank and dispose of the food waste from their kitchens.
For information on digestors go to our sister company
Port Vision & Marine have a waste treatment plant that is installed on the ports site because it will take all of these waste streams and process them. A win – win situation. The port can charge for supplying this service and the shipping line will pay a lot less with the knowledge that they have not broken international maritime law by dumping at sea.
for information on equipment go to the following pages