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Ocean going vessels drawn in sea water for ballast in order to stabilize hull balance when unloading cargoes. Sea water contains local plankton, bacteria, viruses, mud and sand native to the port of unloading. Then such sea water ballast together with the plankton etc. will be discharged at another port. Serious environmental problems arise when ballast water contains marine life.
In response to this problem, the IMO (International Maritime Organization) stipulates all new ships from 2010 must install onboard Ballast Water Management System which satisfies the requirements of IMO Performance Standards.
Our "Ballast Water Purification System" adopts a coagulation and magnetic separation method. It forms flocs which capture organisms by adding a coagulant and magnetic powder and then removes the flocs using powerful magnets. It can treat sea water at high speeds, greatly reducing the accumulation of mud and dead microorganisms in Ballast Tanks and does not cause secondary contamination to other ports as no disinfectants are used.
System Outlines
Pretreatment using coagulation technology
Coagulation technology forms magnetic flocs by adding and agitating a coagulant and magnetic powder to the sea water, in order to capture plankton, viruses, mud and sand.
Purification using magnetic separation technology
A high speed Magnetic Separator collects the magnetic flocs and the residual flocs are removed with a Filter Separator.
Summary of System Features
- Unique coagulation and magnetic separation technology
- Satisfies IMO Performance Standards for the removal of plankton and bacteria
- No biological toxicity as it does not use any disinfectants
- Greatly reduces mud (mud and dead microorganisms) in Ballast Tanks
- Less abrasive to internal coating of Ballast Tank
- No treatment is needed when discharging ballast water as treatment is conducted when sea water is drawn in
- Therefore, it facilitates smooth loading work
Image Chart
Example of Onboard Setup
Process Outline
System Flow
Specification
| Ballast PumpCapacity(m3/h) | Types | Area | Electric Power(kW) |
|---|---|---|---|
| 200 | Modular Type Purification System | 20 Foot Container | 20 |
| 400 | 20 Foot Container x 2 (40 Foot Container x 1) | 40 | |
| L8.4m x W2.7m x H3.5m | |||
| 800 | Unit Assembling Purification System -Flush Mixer & Flocculator -Magnetic Separator & Filter Separator -Additive Processing Unit |
40m2Foot Print*1 | 60 |
| 1,200 | 58m2Foot Print*1 | 120 | |
| 1,600 | 77m2Foot Print*1 | 130 |
- *1
- Foot Print:Floor space
(The figures are based on February, 2008 designs.)