Marine Insight: Bilge Separator

Marine Industry Demand: Bilge Separator Criticality and Sourcing Strategy

Bilge separators represent a non-negotiable component in modern vessel operations, directly safeguarding maritime safety and environmental compliance. Under MARPOL Annex I regulations, untreated bilge water containing oil concentrations exceeding 15 parts per million (ppm) is strictly prohibited from discharge. Vessels operating without functional separators face severe consequences, including port state control detentions, substantial fines, and operational disruptions. The accumulation of oil, fuel residues, and contaminants in bilge spaces poses dual threats: environmental pollution upon illegal discharge and heightened fire/explosion risks within confined engine room compartments. Effective separation ensures only purified water meeting IMO MEPC.107(49) standards enters the marine ecosystem, while recovered oil is stored for proper disposal. This process is not merely regulatory compliance—it is foundational to vessel seaworthiness, crew safety, and the industry’s commitment to oceanic preservation. Failures in this system have directly contributed to ecological incidents and catastrophic onboard fires, underscoring its role as a critical safety barrier.

Sourcing bilge separators from Hangzhou Star Marine Technology provides shipowners and operators with a demonstrable strategic advantage through engineered reliability and lifecycle cost optimization. Our separators integrate advanced coalescer plate technology and automated monitoring systems, ensuring consistent 15ppm effluent quality under dynamic sea conditions. Unlike generic alternatives, Star Marine units undergo rigorous 1,000-hour endurance testing per ISO 10088 standards, minimizing in-service failure rates. Crucially, manufacturing within China’s specialized marine supply chain enables significant cost efficiencies without compromising quality. We leverage economies of scale, localized precision component sourcing, and streamlined logistics to deliver certified equipment at 20-30% below comparable European or Korean offerings. This value extends beyond initial procurement: our separators feature modular designs that reduce maintenance downtime by 40% and extend service intervals, directly lowering total operational expenditure.

The following comparative analysis highlights Star Marine’s technical and commercial positioning against industry benchmarks:

Parameter	Industry Standard	Star Marine Specification
Max. Oil Content Output	≤15 ppm	≤5 ppm (certified)
Flow Rate Range	0.5–10 m³/h	0.25–15 m³/h (customizable)
Key Certifications	IMO MEPC.107(49), ISO 9001	IMO MEPC.107(49), DNV-GL, CCS, ISO 9001
Typical Lead Time	60–90 days	25–30 days
Maintenance Interval	6 months	12 months

Hangzhou Star Marine Technology further differentiates through dedicated export support, including full documentation packages compliant with global flag state requirements and multilingual technical assistance. Our engineering team collaborates directly with shipyards to ensure seamless integration, avoiding costly retrofit delays. In an industry where operational continuity and regulatory adherence are paramount, selecting a supplier that combines uncompromising technical performance with transparent cost efficiency is not optional—it is essential risk management. Star Marine delivers this balance, ensuring vessels operate safely, legally, and economically throughout their service life.

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Technical Specs & Approval

The bilge separator is a critical component in marine pollution prevention systems, designed to remove oil and other contaminants from bilge water before discharge overboard, ensuring compliance with international maritime regulations such as MARPOL Annex I. Hangzhou Star Marine Technology Co., Ltd. manufactures high-efficiency bilge separators engineered for durability, reliability, and optimal performance in demanding marine environments. These units are designed and fabricated in accordance with classification society standards including CCS, ABS, DNV, LR, and others, ensuring global acceptance and operational integrity.

Constructed using either marine-grade aluminum alloy or carbon steel with anti-corrosive coating, the bilge separator is tailored to the vessel’s operational profile and environmental exposure. Aluminum variants are ideal for lightweight applications and vessels operating in corrosive saltwater environments, offering excellent resistance to galvanic corrosion when properly insulated. Steel construction, on the other hand, provides enhanced structural strength and is typically selected for larger vessels or installations requiring high-pressure tolerance. All wetted parts, including internal piping, coalescer modules, and sensor housings, are made from stainless steel (AISI 316) or non-corrosive composite materials to ensure long service life and resistance to hydrocarbon exposure.

Watertightness is a fundamental design criterion. The separator housing is pressure-tested to a minimum of 1.5 times the maximum allowable working pressure to verify integrity. Sealing gaskets are fabricated from nitrile rubber (NBR) or EPDM, selected based on fluid compatibility and temperature range, ensuring leak-free operation across varying load conditions. The unit is certified to IP66 for electrical enclosures and sensor compartments, protecting against dust ingress and high-pressure water jets during deck washdowns.

The compact modular design allows for flexible installation in confined engine room spaces. Dimensions are optimized to balance treatment capacity with spatial constraints, with standard models ranging from 800 mm to 2,200 mm in length. Inlet and outlet flanges conform to ISO 7005 or JIS B 2220 standards, enabling seamless integration with existing piping systems. The separator includes integrated lifting lugs and anti-vibration mounting brackets to facilitate safe handling and reduce transmission of engine vibrations.

All units are equipped with automatic monitoring systems, including oil content meters (OCM) calibrated to detect hydrocarbon concentrations down to 15 ppm, ensuring compliance with discharge regulations. An alarm and automatic overboard discharge cut-off are activated if oil content exceeds permissible limits.

The following table outlines the standard technical parameters for Hangzhou Star Marine Technology’s bilge separator series:

Parameter	Specification
Material Options	Marine-grade Aluminum Alloy / Carbon Steel with Epoxy Coating
Working Pressure	0.6 MPa (max)
Test Pressure	0.9 MPa
Operating Temperature Range	0°C to 70°C
Inlet Water Oil Content	Up to 5,000 ppm
Outlet Oil Content	≤ 15 ppm (compliant with MARPOL)
Flow Rate Capacity	0.5 m³/h to 5.0 m³/h (model-dependent)
Electrical Supply	220 VAC, 50/60 Hz (customizable)
Protection Rating (Enclosure)	IP66
Flange Standard	ISO 7005 or JIS B 2220
Overall Dimensions (L×W×H)	800–2,200 mm × 400–800 mm × 600–1,500 mm
Weight	80–350 kg (depending on material and capacity)

Each bilge separator undergoes rigorous factory testing, including hydrostatic pressure testing, flow calibration, and oil separation efficiency verification, prior to shipment. Documentation includes material test certificates, pressure test reports, and classification society approval drawings.

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Shipbuilding Solutions

Hangzhou Star Marine Technology: Comprehensive Bilge Separator Solutions for Shipbuilding & Repair

Hangzhou Star Marine Technology Co., Ltd. delivers engineered bilge water treatment systems meeting stringent global maritime environmental regulations. As a specialized marine outfittings provider within the Shipbuilding & Repair Solutions sector, we offer a complete, integrated approach for both new vessel construction and critical repair projects. Our focus is on regulatory compliance, operational reliability, and minimizing project downtime through rapid response and technical expertise.

For new build programs, Star Marine provides OEM-level engineering support from initial design integration through installation and commissioning. We collaborate closely with shipyards during the design phase to ensure optimal system layout, piping integration, and electrical interface, adhering strictly to IMO MEPC.107(49) and subsequent resolutions. Our systems are certified by all major classification societies including CCS, DNV, LR, ABS, and BV, guaranteeing seamless approval processes. We supply fully assembled, tested units with comprehensive documentation packages, reducing yard workload and accelerating delivery schedules. Proactive project management ensures on-time delivery synchronized with critical construction milestones.

In the demanding ship repair environment, rapid turnaround is paramount. Star Marine maintains strategic global inventory hubs and a dedicated 24/7 technical support team to address urgent separator failures or mandatory upgrades. Our repair solutions encompass genuine OEM spare parts, certified refurbishment services for legacy units, and expedited replacement systems. We understand dry-dock window pressures; our field service engineers provide immediate troubleshooting, on-site commissioning support, and crew training to restore vessel operational status swiftly. Pre-stocked critical components and streamlined logistics enable response times significantly below industry averages, directly impacting vessel availability and owner costs.

Technical performance and regulatory adherence form the core of our bilge separator offerings. All Star Marine units undergo rigorous factory acceptance testing per MEPC standards, ensuring consistent effluent quality below the mandated 15 ppm oil content threshold. The table below summarizes key specifications for our standard marine bilge separator series:

Model	Max. Flow Rate (m³/h)	Discharge Standard (ppm)	Power Supply (V/Hz)	Typical Dimensions (LxWxH mm)
SMS-BS10	1.0	< 15	220/50 or 110/60	1200 x 800 x 1500
SMS-BS25	2.5	< 15	440/60 or 220/50	1500 x 1000 x 1800
SMS-BS50	5.0	< 15	440/60	1800 x 1200 x 2000
SMS-BS100	10.0	< 15	440/60	2200 x 1400 x 2200

Star Marine simplifies the export process for international clients with full customs documentation, multilingual manuals, and adherence to destination country import protocols. Our technical team provides remote pre-installation support and post-delivery validation assistance. By combining certified equipment, responsive logistics, and deep maritime application knowledge, Hangzhou Star Marine Technology ensures shipyards and repair facilities receive a truly turnkey bilge water management solution, safeguarding environmental compliance and operational continuity without project delays. Partner with us for assured performance and peace of mind.

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Packaging & Logistics

Packaging & Logistics for Bilge Separators – Hangzhou Star Marine Technology Co., Ltd.

At Hangzhou Star Marine Technology Co., Ltd., we ensure that all bilge separators are packaged to the highest international standards to guarantee safe and secure delivery to global destinations. As part of our commitment to quality and reliability in marine outfittings, our packaging protocols are designed to withstand the rigors of maritime and overland transport while complying with international phytosanitary and customs regulations.

All bilge separator units are shipped using robust wooden cases constructed from high-grade, kiln-dried hardwood. These wooden enclosures are fully compliant with ISPM 15 (International Standards for Phytosanitary Measures No. 15), which governs the treatment of wood packaging material used in international trade. Each wooden case is heat-treated to eliminate pests and pathogens and is clearly marked with the official ISPM 15 stamp, ensuring acceptance at all major global ports. The design of the wooden cases includes internal bracing and cushioning to immobilize the bilge separator during transit, minimizing the risk of mechanical stress or impact damage.

For heavier models or containerized shipments, bilge separators are mounted on steel pallets to enhance structural integrity and facilitate efficient handling via forklifts and cargo cranes. Steel pallets offer superior durability and resistance to environmental conditions such as humidity and salt exposure, which are common during sea freight. These pallets are welded to precise specifications and include anti-slip surfaces and lifting points that conform to ISO container handling standards.

All packaging materials are selected based on the model dimensions, weight, and destination climate conditions. Units are sealed with moisture-resistant wrapping prior to enclosure to prevent corrosion during long ocean voyages. Desiccant packs are included inside larger enclosures to control internal humidity levels. Labels indicating handling instructions, orientation arrows, and cargo classification are affixed in accordance with IMDG and IATA guidelines where applicable.

Our primary export hubs are the ports of Ningbo and Shanghai, two of the busiest and most efficient container terminals in the world. These locations provide direct access to major shipping lines with regular services to North America, Europe, Southeast Asia, the Middle East, and Africa. We coordinate closely with certified freight forwarders to ensure timely customs clearance, proper documentation, and real-time shipment tracking.

Below is an overview of our standard packaging configurations based on bilge separator model type:

Model Type	Packaging Method	Dimensions (L×W×H)	Weight Range (kg)	Export Port
Compact (1–2 m³/h)	ISPM 15 Wooden Case	1200×800×1500 mm	150–300	Ningbo / Shanghai
Standard (3–5 m³/h)	ISPM 15 Wooden Crate	1800×1000×1800 mm	400–600	Ningbo / Shanghai
Heavy-Duty (6–10 m³/h)	Steel Pallet + Crate	2200×1200×2200 mm	800–1200	Ningbo / Shanghai

All shipments are accompanied by a comprehensive packing list, certificate of compliance, and bill of lading. We recommend marine insurance for all international deliveries to protect against unforeseen transit risks. Our logistics team provides end-to-end support to ensure seamless delivery of bilge separators to vessel builders, shipyards, and offshore facilities worldwide.

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Contact Star Marine

Contact Star Marine for Bilge Separator Export Solutions

Navigating international marine equipment regulations requires precision and expertise, particularly for critical systems like bilge water separators. As global environmental standards tighten under MARPOL Annex I, vessel operators and shipyards face escalating pressure to deploy separators that guarantee compliance while minimizing operational disruption. Hangzhou Star Marine Technology Co., Ltd. delivers engineered solutions that exceed stringent discharge limits of 15 ppm oil content, ensuring your fleet avoids port state control detentions, costly fines, and reputational damage. Our bilge separators integrate advanced coalescing technology, robust automation, and corrosion-resistant materials tailored for harsh maritime environments, providing reliable performance across tankers, cargo vessels, and offshore platforms.

Star Marine’s export division specializes in global logistics, customs clearance, and certification alignment for diverse maritime markets. We proactively address regional regulatory nuances—from USCG Type Approval to EU MED certification—streamlining your procurement process. Our engineering team collaborates with clients during the design phase to ensure seamless integration with existing onboard systems, reducing retrofitting complexity and downtime. All units undergo rigorous factory acceptance testing per IMO MEPC.107(49) standards, with comprehensive documentation packages including material traceability, pressure test reports, and multilingual operation manuals.

Key technical specifications for our flagship bilge separator series are summarized below:

Parameter	Value	Compliance Standard
Flow Rate Range	1–50 m³/h	IMO MEPC.107(49)
Discharge Standard	≤15 ppm oil content	MARPOL Annex I Reg. 14
Materials of Construction	Duplex stainless steel (wetted parts), Marine-grade aluminum	ASTM A182 F60 / EN 10088-3
Control System	PLC with touchscreen HMI, remote monitoring option	IEC 60945
Power Supply	220–440 VAC, 50/60 Hz	ISO 8846
Certifications	CE, DNV-GL Type Approval, CCS, KR	SOLAS Chapter II-1 Reg. 36

Choosing Star Marine means partnering with an ISO 9001:2015-certified manufacturer committed to lifecycle support. Our export team manages end-to-end shipping via FCL/LCL from Ningbo Port, with Incoterms® 2020 flexibility (FOB, CIF, DDP). We provide on-site commissioning assistance, multilingual technical training, and a 24-month warranty covering critical components. For vessels operating in sensitive ecosystems like the Baltic Sea or North American ECA zones, our separators include optional real-time oil content monitors with data-logging capabilities to satisfy regional reporting mandates.

Initiate your compliance strategy today by contacting Kacher YE, Product Manager for Marine Outfittings. With over 12 years of maritime equipment export experience, Kacher specializes in resolving complex regulatory hurdles and tailoring solutions for diverse vessel types. He will coordinate a technical consultation to review your operational requirements, port state control history, and integration constraints. Provide vessel particulars, target delivery timelines, and regional certification needs for a customized quotation with lead time analysis.

Contact Kacher YE directly to secure your compliant bilge separator solution:
Kacher YE
Product Manager, Marine Outfittings
Hangzhou Star Marine Technology Co., Ltd.
Email: [email protected]
Phone: +86 571 8877 6655 (Hangzhou, China)
We respond to all inquiries within 4 business hours. Specify “Bilge Separator Export Inquiry” in your subject line for priority routing. Let Star Marine safeguard your operations against regulatory non-conformance while optimizing total cost of ownership. Your voyage to seamless compliance begins with one email.

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