Blohm + Voss TMPB 10 Bilge Water Separator
- There are currently two different types of Bilge Water Separators (BWS) also known as Oily Water Separators (OWS) installed onboard Evergreen Line ships
- Oil Content Meter with Electronic Log and Interlock Design to Prevent Illegal Discharge
Both are state-of-the-art and designed for future compliance of stricter marine pollution regulations. According to MARPOL ANNEX V, machinery space bilge discharge containing oil should not exceed 15 ppm and from July, 2005, this includes emulsified (blended) oily water.
Evergreen has installed new German made Blohm + Voss TMPB 10 series Bilge Water Separator on our S & U-type and purchased US-made Coffin ULTRA-SEP MODEL US 5000 to replace existing equipment. Each type of BWS is equipped with an electronic log so operational records are retroactive by downloading from the oil content meter.
EVAC STP 40C Vacuum Toilet System
The sewage system mainly is composed of three compartments: the aeration chambers, the settling chamber and the disinfection chamber.
All wastewater is led to aeration chamber by gravity or vacuum. The aerobe organism, a bacterium that requires oxygen to survive, is bred in the first chamber. Required air is produced by the air blowers and led to aeration chamber via air distributors to dissolve the sewage sludge. Treated sewage will be disinfected by chlorination in the disinfection chamber to meet IMO standards regarding presence of coliform bacterium in treated water and than be discharged overboard.
Sasakura Super Trident Marine Sewage Treatment Plant
This plant reduces the influent (non-dominant organism in a community that exerts an important modifying effect) waste material with Carbon, Oxygen, Hydrogen, Nitrogen and Sulphur into Carbon dioxide, water and new bacteria cells. The mixed fluid is flowed out of the first compartment, further settled out and the activated sludge is separated in the settling chamber by gravity and pumped back to the aeration chamber by an air driven ejector(s). Then clarified water is overflowed from the second compartment into the disinfection chamber, where the chlorine-based disinfectant chemical is added by the dosing pump into the clarified water to meet IMO standards regarding presence of coliform bacterium in treated water. Treated water is pumped to sea or ashore by a discharge pump.
In addition to the burn the sludge generated from the separator, the shipboard incinerator can be used to burn inflammable garbage such as rags, oily residues and used papers. The ship should apply for discharge to shore of incinerated ash. The operators must be trained as to how to correctly operate incinerator and capable of implementing the guidance provided in the manufacturerâs operating manual.
Shipboard incineration of below garbage shall be prohibited follow Annex V of MARPOL 73/78 :
- Cargo residues (Annex IãIIãand III) and related contaminated packing materials. - Oil or chemical cargo residues or associated contaminated packaging.
- Substances containing PCBs such as electrical appliance, older form of stabilized transformer and cable wastes.
- Garbage containing more than traces of heavy metals - these include mercury, cadmium, lead, for example, found in some cell type batteries.
- Refined petroleum products containing halogen compounds (fluorine, chlorine, bromine etc.).
- Shipboard incineration of polyvinyl chlorides (PVCs) or plastic garbage shall be prohibited.
The incinerator of S type vessels are maintenance friendly and can be operated 24 hours a day. Compared with the old type incinerator, the one onboard S type vessels can be fed with waste continuously without stopping the burner.
To help monitor and recycle all plastic garbage, waste cans and paint containers generated onboard, every Evergreen ship is installed with a high capacity garbage compressor. The volume reduction is up to 10:1 and this efficient waste handling means better hygiene, better working conditions and more free space in a number of different environments. All waste compressed is properly stored onboard and discharged to shore-side reception facilities for recycling.
The equipment can be used for handling the following waste materials:
|Paper Cardboard||Shrink Film|
|Metal Cans/Aluminium Cans||Food Cans|
|Semi-dry Waste||Bagged General Waste|
|Other Metals||Steel Straps|
Each Evergreen Line ship has high quality stainless steel garbage bins for garbage segregation planning. Similar to what is done in a private home, garbage are separated into several categories including flammable, plastic, food waste and others. All the plastic garbage generated onboard is discharged to shore reception facilities for recycle.
Flammable waste such as papers, oilcloth and sawdust is incinerated onboard. Food waste is stored in a specified refrigerator and disposed of in accordance to MARPOL regulations. Other waste such as CD/DVD discs, batteries, light bulbs, fluorescent lamps and medical wastes, among others, are sent to specialized reception facilities for disposal.
All garbage is classified into five categories:
- plastics and plastics mixed with non-plastic garbage;
- food wastes;
- oil contaminated and flammable garbage;
- hazardous and solid wastes including medical waste, chemical drum, paint drum, used batteries, fluorescent lamp;
Principles for handling different categories garbage:
Plastics and plastics mixed with non-plastic garbage
Disposal to sea is prohibited. Plastic garbage must be retained on board the ship for discharge at port reception facilities and obtain from the operator of port reception facilities, or from the master of the ship receiving the garbage, a receipt or certificate specifying the estimated amount of garbage transferred. The receipt or certificates must be kept on board the ship with the Garbage Record Book for three years.
Food wastes can only be disposed to sea in the area 15 nautical miles off shore and should be retained onboard inside the fridge for food waste when within the 15 nautical miles off shore area and while stay in port.
(Oil contaminated and) flammable garbage
Oily rags and contaminated rags must be kept on board and discharged to port reception facilities or incinerated.
Hazardous solid wastes
Such garbage should be kept separate from other garbage and preferably treated as recycling garbage and retained for disposal in port.
Other garbage, which can be disposed of at sea: Dispose only when the vessel is 25 nautical miles off shore.
Our vessels are all equipped with garbage compressor to reduce the garbage's capacity.
Although Annex V of MARPOL 73/78 permits some categories garbage can be disposed to sea, we encourages ship to discharge garbage to qualified shore reception facilities.
Ballast water carried on ship to adjust ship stability and trim usually effects the marine ecosystems and is much harmful to ecological balance due to marine organisms will be transferred from ports to the other ports through the ballast water exchange. Evergreen B/L-Type vessel will install the ballast water treatment plant which is fully apply the IMO guideline to ensure the ballast water exchange during ship operation not to cause such problem and lower the environment impact
Using the ballast water treatment plant - filter + ultraviolet sterilization.
Following ballast water discharge standards:
- For organisms greater than or equal to 50 micrometers in minimum dimension: Discharge must include fewer than 10 organisms per cubic meter of ballast water.
- For organisms less than 50 micrometers and greater than or equal to 50 micrometers: Discharge must include fewer than 10 organisms per milliliter of ballast water.
- Toxigenic Vibrio cholera (serotypes O1 and O139) must have a concentration of less than one colony forming unit per 100 milliliters.
- Escherichia coli must have a concentration of less than 250 colony forming units per 100 milliliters.
- Intestinal enterococci must have a concentration of less than 100 colony forming units per 100 milliliters.