What are the parts of oily water separator?

What are the parts of oily water separator?

OWS consists of mainly three segments:

  • Separator unit. This unit consists of catch plates which are inside a coarse separating compartment and an oil collecting chamber.
  • The Filter unit. This is a separate unit whose input comes from the discharge of the first unit.
  • Oil Content Monitor and Control Unit.

What do you call the 2nd compartment of the oily water separator?

The second-stage filter uses coalescer inserts to achieve the final de-oiling. Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture which causes them to join and increase in size. The oil from the collecting spaces is drained away automatically or manually.

What maintenance is performed on an oil separator?

All oil/water separators must be cleaned out at least annually and documentation of the cleanout should be maintained. 7. All records must be kept at the facility for at least three years.

How do you test a 15 ppm alarm in OWS?

Hold the OIL ALARM switch 33 pressed. OIL ALARM is issued in 2 seconds. OIL ALARM lamp 17 blinks and 15 PPM is displayed. At same time ALARM is raised in Engine Room.

What is the working principle of oily water separator?

Oil water separators are designed specifically to target oil based on the gravity difference between oil and water, allowing for heavier solids (sludge) to settle to the bottom while oil rises to the top, leaving additional wastewater in the middle layer.

What is provided in the upper and sometimes the lower parts of the separator depending upon the type of oil to be separated?

Steam or electric heating coils are provided in the upper and sometimes the lower parts of the separator, depending upon the type of oil to be separated. Where greater purity is required, the almost oil-free water passes to a filter unit.

How do oil water separators work?

Is oily water separator important?

Separators. oily waters The main purpose of the oily water separator is to separate the hydrocarbons from oily water coming from the bilge of a ship and deliver a cleaner effluent that can be discharged overboard according to IMO MEPC 107(49) regulation.

Can oil separator be cleaned?

They can be cleaned while still in the unit or removed for cleaning. To clean them without removal, stick a low pressure hose in between the plate spaces on the plate packs.

Why do we need to maintain the OWS?

Out of all the machinery systems, OWS is kept at high priority due to stringent rules and regulations attached to it for ensuring environmental compliance. Hence it is important for the ship staff to maintain this machine in best of its shape.

Which pump is used in OWS?

A common type of positive displacement pump in OWS systems is a progressive cavity pump and is also known as an (eccentric) screw pump or even just cavity pump. It transfers fluid by means of the progress, through the pump, of a sequence of small, fixed shape, discrete cavities, as its rotor is turned.

How many parts per million of oily water separator can be discharged at sea?

Oily water separator: This is the equipment specific to the marine industry which is used to separate the oil from water. It only allows effluent of less than 15ppm to get discharged out at sea.

What is a Coalescer of an oil water separator?

The Coalescer is a superior separation technology that forces two tiny oil droplets to ‘coalesce’ to form a giant droplet to produce excellent oil and water separation. The Coalescer is a fantastic oil-water separator that uses coalescing material to remove up to 95% of all floating oil from the water’s surface.

How much does an oil separator cost?

Purchasing costs of an oil water separator can range from $2,500 to over $1 million depending on the specifications.

How can you increase the efficiency of an oily water separator?

Install Dust Filter: While using OWS for discharging bilge mixture containing dust and sand (a coarse-grained entity), it will be difficult for the coalescer filter to pass dust and sand due to their sizes. This will reduce the operating hours of the filter and in-turn the efficiency of the OWS.

What is oil Record Part 1?

Every oil tanker of 150 gross tonnage and above and every ship of 400 gross tonnage and above other than an oil tanker shall be provided with an Oil Record Book Part I (Machinery space operations).

What is a Coalescer plate?

What are coalescing plate separators? Coalescing plate separators remove suspended solids, free oils, and grease from waste water using gravity. Contaminated water is pumped into a chamber where solids sink to the bottom, and oil rises to the top. The clean water is then extracted, while the contaminants are removed.

How does an oil Coalescer work?

A coalescing filter is a device used to separate vapors, liquids, soluble particles, or oil from some other fluid through a coalescing effect. The coalescing effect is the coming together of liquid aerosols to form a larger whole which is easier to filter out of the system due to increased weight.

How much does it cost to install an air oil separator?

The average price of installing an Air Oil Separator is around $300. This price does not include the cost of parts. However, this is just an average and depends on the mechanic and the location within the country. Some may charge $650, while others only charge $150.

How often should you carry out maintenance on the OWS?

Minimum recommendations are that full inspection and cleaning of the OWS is to be carried out at least every two months with filters cleaned on a monthly basis. Such tests must be recorded in the engine log book and oil record book. The tank from which the OWS takes suction should be cleaned on a two monthly basis.

What is oil record book 1 and 2?

The first part of the oil record book deals with machinery space operations for all ships. The second part of the oil record book is for cargo/ballast operations and this part only needs to be filled out by crew members aboard oil tankers.

What is Oil Record Book Part 2?

Every oil tanker of 150 gross tonnage and above, shall be provided with an Oil Record Book Part II (Cargo/Ballast Operations). The Oil Record Book, shall be in the form specified and it is important that the record book is kept up to date with any revisions.