Ballast Water Management System

Ballast Water Management System

5/F, No. 700 Luban Road, Shanghai 200023, ChinaTel: +86 21 53018795 ; Fax: +86 21 53018771Website：www.pactmarine.comEmail: BWT@pactmarine.com

GLOBAL NETWORK：PACT marine has offices & representation in Shanghai, Hongkong, Dubai, Los Angles, and Turkey. This worldwide service network will provide our clients with timely, all-round service.

Series specifications

PACT marine Ballast Water Management SystemPACT marineTM consists of：

Filter – 40μm self-cleaning filterUV System – medium pressure UV(MPUV)Control System – UV power panel, control panel and online monitoring instrument (including flow meter, light intensity probe and temperature transmitter)

Self-cleaning Filter:Filter screen: PACT marine Ballast Water Management System uses a 40μm filter screen, which removes also TSS between 40～50μm which affects UV performance, therefore enhancing disinfection efficiency and reduces overall energy consumption significantly. The screen is made from a special grade of stainless steel, offering good corrosion-resistance and stable filtration performance.

Shell material of the filter：The filter’s shell is made from carbon steel, coated with 250 µm epoxy phenol and zinc phosphate, providing good corrosion resistance.

Back-flush mechanism：During filtration, solids accumulate on the screen surface, forming a filter cake. As filtration proceeds, the filter cake builds, and the filter differential pressure increases. When the differential pressure reaches the set value (typically 0.5bar), the self-cleaning mode triggers automatically. If the ballast pump is not in operation, the ship relies on gravity flow to ballast; and the self-cleaning mode can be triggered via a timer. Hence, the self-cleaning action can be controlled by 2 different methods：pressure switch or a timer. During self cleaning, proximity nozzles shuttles across the whole surface of the screen, retained solids is flushed from the screen and washed into the discharge pipe. A programmable logic controller(PLC)monitors & controls the whole process.

UV System：Compared with low pressure UV lamp technology, the medium pressure UV reactor has a higher pressure resistance volume and wider range of temperature tolerance. It includes a specific number and size of medium pressure UV lamps depending on the total ballast water flowrate. These lamps are housed in high quality quartz sleeves, which are housed in a corrosion resistant treatment

Benefits:Chemical-free, no toxic hazards to the ship and crewEquipped with self-cleaning motor to clean quartz sleevesOptimized power consumption (system automatically optimizes UV intensity, based on intake water quality)Small footprintEasy operation and maintenanceConsistent temperature-independent operation in all salinitiesConservative design, able to meet higher IMO discharge standard

UV system specifications

Bactericide efficiency 99%～99.99%

UV lamp life >5,000h

Treatment capacity 300～1000t/h

Pressure resistance 10kg/cm2

Series Models Capacity(m3/hr) Voltage Working Power

P-300 200～300 220±10V 30～48kW

P-500 400～600 380±10V 48～72kW

P-750 600～800 380±10V 72～108kW

P-1000 800～1000 380±10V

Larger Models being modular combinations of above

P-1500 1500 P-750×2

P-2000 2000 P-1000×2

P-3000 3000 P-1000×3

Shell material of the filter Carbon steel

Shell coat of the filter Zinc phosphate + 250μm Epoxy phenol

Maximum working pressure 10bar （20bar is optional）

Minimum working pressure 1.8bar

Material of the filter screen Stainless steel 316L / 904L

Back flushing time 30s or 60s

Minimum pressure in flushing mode 2.0bar

Pressure lost 0.1-0.5bar

Self-cleaning filter specifications：