UV Ballast Water Management System

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UV Ballast Water Management System

Application

BWMS is a key international measurement for environmental protection that aims to stop the spread of potential invasive aquatic species in ships' ballast water enters into force. Being a relatively more mature disinfection technology, compared to other disinfection technologies, ultraviolet disinfection does not produce active substances, does not pose an occupational hazard to crew, more economical and environmentally friendly.

Main products

UV Ballast Water Management System
100 m³ Ballast Water Treatment System	150 m³ Ballast Water Management System	200 m³ Ships Ballast System	250 m³ Ballast Water System
300 m³ Ballast Water Management System	500 m³ Ballast Water Management Plant	600 m³ Ballast Water Management System	750 m³ Ballast Water Treatment System
800 m³ Ballast Water Management System	1000 m³ Ballast Water Management System	1200 m³ Ballast Water System	1500 m³ Ballast Water Management System
2000 m³ Ballast Water Treatment System	3000 m³ Ships Ballast System	4000 m³ Ballast Water Management System	5000 m³ Ballast Water Management Plant
50 m³ Ballast Water Treatment System

System component

MCC and PLC panel

Medium-pressure UV

Under economy mode: can achieve lower consumption due to UV intensity adjustment according to  incoming water quality. Under performance mode: can achieve high performance due to sufficient UV dosage

- Stable, reliable and high performance, not affected by temperature, pH

- Equipped with temperature monitoring meter

- Equipped with scale removal sleeve cleaning mechanism

- Chemical free

Automatic filter

The filter has automatic back flushing and is self-cleaning.

- Minimize sediments entering ballast tanks

- Unique filter structure, ensure high remove rate

- Filter unit continues filtration  during self-cleaning operation

- Short ballasting/de-ballasting time

Comparison of different treatment method

	UV	Cl-based	O3	Deoxyg.	AOP	Chemicals
Method	Phy.	Chem.	Chem.	Asphy.	Chem.	Chem.
Pretreatment (Y/N)	Y	Y/N	Y	Y	Y	Y
Operation cost	++	+	+++	+++	+++	+++
Maintenance cost	+	++	+++	+	+++	+
Maintenance frequency	+	++	+++	+	+++	+
Disinfection performance	+++	+++	/	/	++++	++
Contact time	0.1-0.3s	12-24h	15-30min	2-4d	12-24h	/
Toxic chemicals (Y/N)	N	Y	Y	N	Y	Y
Water chemistry change	N	Y	Y	N	Y	Y
Immediate discharge	Y	N	N	N	N	N

Models

Series Model	Treatment Capacity	Voltage	Power
	(m3/hr)
P-200	50-200	220±10V	27-36kW
P-300	200-300	220±10V	30-48kW
P-500	400-600	380±10V	48-72kW
P-750	600-800	380±10V	65-84kW
P-1000	800-1000	380±10V	75-108kW
P-1250	1000-1250	380±10V	103-132kW
Modular combination of above:
P-1500	1500	P-750×2
P-2000	2000	P-1000×2
P-3000	3000	P-1000×3
P-4000	4000	P-1000×4

System Operating Principles

In the ballast process of the ship, the ballast water enters the ballast water management system from the ballast pump through the filter, then is treated by the Ultraviolet reactor, and then enters the ballast tank. Through the filter; large inorganic particles, most zooplankton and phytoplankton will be removed to ensure the effectiveness of downstream UV disinfection. Ultraviolet irradiation at 200-280nm wavelength in UV reactor can cause damage to cells and realize disinfection of residual plankton, bacteria and viruses in ballast water.

During de-ballasting, the ballast water is directly pumped into the MPUV reactor; by passing the Filter for secondary disinfection treatment before discharge.

Operation Model

Factors affecting BMWS

Vessel factor: Different types of ships depend on ballast water differently. For bulk carriers and oil tankers, the amount of ballast is very large, and the BWMS is required to complete the ballast and unload quickly, so the solution for instantaneous treatment and discharge of ballast water is the right choice. For special purpose vessels (crude oil tankers, chemical tankers, etc.), it is a must whether the BWMS can meet the fire and explosion safety requirements.

Route factor: Due to the variation of water temperature and salinity in different shipping routes, especially in low temperature and salinity conditions, the BWMS performance of electrolysis method may be poor; low UV transmittance (UVT) caused by high influent turbidity may affect the Performance of BWMS for UV light, in this case high efficiency filtration prior to UV disinfection that increases UVT; As certain legislative regimes may require higher emission standards than those set by the International Maritime Organization, and there may be ports where transoceanic vessels call at these regimes, it is prudent to choose a BWM solution that allows flexibility in design to meet the regime's more stringent emissions requirements. For ships sailing on regional routes, ballast water treatment solutions that require long stops for adequate disinfection are not recommended.

IACS Certificate Options: BV, CCS, NK, DNV.GL, IRS, ABS, LR, RMRS, RINA