CD Pre Treatment Process Description
2
Marinfloc AB, Industrivägen 10 , 472 95 Varekil, Sweden Phone: +46 (0)304 606300 Fax: +46 (0)304 10051 E-mail: [email protected] CD Pre Treatment Process Descripon CD Pre T - PD—2015-05-04 Made in Sweden by Marinfloc Brief descripon of the CD-Pre Treatment system The Marinfloc CD-Pre Treatment system is an emulsion breaking unit to install in front of the Oily Water Separator to break the emulsions these systems have so much difficules in treang. It is a fully automac system based on the emulsion breaking technlogy of flocculaon and dissolved air flotaon directly derived from the patented Ma- rinfloc Oily Water Separator CD model. The CD-Pre Treatment feeds the Oily Water Separator (OWS) clean water so it can discharge <15 PPM. This is nor- mally not possible as the vast majority of OWS-systems can not treat emulsions or relies on filtering which imposes tremendous operaonal costs and sadly oſten leads to willful manipulaon by the crew. Flocculaon and Flotaon. As on almost all land based waste water treatment systems the CD-Pre Treatment unit ulizes flocculaon to re- move emulsified oil, chemicals, parcles, dirt etc. that remains in the water aſter the free oil has been removed. The flocculaon, which is the heart of the process, is achieved by means of chemicals to break the emulsions and to make all other contaminants come out of suspension and form so called flocks. The system use two types of chemi- cals for this purpose, a Coagulant and a Flocbooster. The dosage is normally 0,3-0,4 litre/ton bilge water. The flocks are separated from the water by means of forced flotaon in the flocculaon tank and are removed in the top secon of the flocculaon tank by the drain pump. The normal sludge generaon is 2-3% of the total influ- ent. The water is lead through a cascade to the bag filter for filtraon of but it is in the flocculaon stage that 99% of all contaminaon is removed. Filtraon. Even though the water is very clean aſter the flocculaon tank it may contain some small flocks and the system has a 25µ bag filter to ensure an effluent of < 15PPM.
Transcript of CD Pre Treatment Process Description
Marinfloc AB, Industrivägen 10 , 472 95 Varekil, Sweden
Phone: +46 (0)304 606300
Fax: +46 (0)304 10051
E-mail: [email protected]
CD Pre Treatment
Process Description
CD
Pre
T
- PD
—20
15-0
5-0
4
Made in Sweden
by Marinfloc
Brief description of the CD-Pre Treatment system
The Marinfloc CD-Pre Treatment system is an emulsion breaking unit to install in front of the Oily Water Separator
to break the emulsions these systems have so much difficulties in treating. It is a fully automatic system based on
the emulsion breaking technlogy of flocculation and dissolved air flotation directly derived from the patented Ma-
rinfloc Oily Water Separator CD model.
The CD-Pre Treatment feeds the Oily Water Separator (OWS) clean water so it can discharge <15 PPM. This is nor-
mally not possible as the vast majority of OWS-systems can not treat emulsions or relies on filtering which imposes
tremendous operational costs and sadly often leads to willful manipulation by the crew.
Flocculation and Flotation.
As on almost all land based waste water treatment systems the CD-Pre Treatment unit utilizes flocculation to re-
move emulsified oil, chemicals, particles, dirt etc. that remains in the water after the free oil has been removed.
The flocculation, which is the heart of the process, is achieved by means of chemicals to break the emulsions and to
make all other contaminants come out of suspension and form so called flocks. The system use two types of chemi-
cals for this purpose, a Coagulant and a Flocbooster. The dosage is normally 0,3-0,4 litre/ton bilge water.
The flocks are separated from the water by means of forced flotation in the flocculation tank and are removed in
the top section of the flocculation tank by the drain pump. The normal sludge generation is 2-3% of the total influ-
ent.
The water is lead through a cascade to the bag filter for filtration of but it is in the flocculation stage that 99% of all
contamination is removed.
Filtration.
Even though the water is very clean after the flocculation tank it may contain some small flocks and the system has
a 25µ bag filter to ensure an effluent of < 15PPM.
Typical inlet Flocculation Floatation Outlet < 15 PPM Picture from top of flocculation
tank where flocculent sludge is
removed from the cleaned water.
The CD-Pre treatment system can be upgraded to a Marinfloc CD system approved to the latest IMO regulation MEPC
107(49). This is easily done with an additional module.
Please contact [email protected] for more detailed information
Marinfloc AB, Industrivägen 10 , 472 95 Varekil, Sweden
Phone: +46 (0)304 606300
Fax: +46 (0)304 10051
E-mail: [email protected]
Made in Sweden
by Marinfloc
