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Product Description
80 Persons Shipboard Sewage Treatment Equipment
Product Introduction:
The DY-80 is a compact, fully automatic marine wastewater treatment plant designed for the treatment of sewage and grey water generated aboard ocean-going vessels, offshore platforms, and coastal ships. With a daily treatment capacity of 5,600 liters, equivalent to 5.6 cubic meters per day, this system is ideally suited for crews of approximately sixty to eighty persons, making it a perfect solution for large cargo vessels, passenger ferries, cruise ships, and offshore accommodation platforms.
The system integrates proven biological contact oxidation technology with advanced membrane bioreactor filtration and ultraviolet disinfection, delivering consistent high-quality effluent that meets the most stringent international marine discharge standards. The DY-80 is built for reliability, low maintenance, and ease of operation in the demanding marine environment.
Treatment Process:
The DY-80 employs a three-stage treatment process. Incoming wastewater first enters the contact oxidation chamber, where aerobic microorganisms digest and break down organic pollutants. The partially treated liquor then flows into the membrane bioreactor chamber, where ultrafiltration membranes perform solid-liquid separation, effectively retaining suspended solids and bacteria while allowing purified water to pass through. Finally, an ultraviolet disinfection unit inactivates any remaining pathogenic microorganisms without chemical dosing, ensuring safe and environmentally friendly discharge.
Effluent Quality and Compliance:
The DY-80 is designed and type-approved to comply fully with IMO Resolution MEPC.227(64) and MARPOL 73/78 Annex IV. Treated effluent consistently achieves total suspended solids at or below 35 milligrams per liter, biochemical oxygen demand at or below 25 milligrams per liter, and chemical oxygen demand at or below 125 milligrams per liter. Coliform count is limited to no more than 100 per 100 milliliters, with pH maintained between 6.0 and 8.5, and residual chlorine kept below 0.5 milligrams per liter.
Outline Drawing:
System Schematic Diagram:
Technical Specifications:
| Model | DY-80 | |
| Hydraulic Load | L/d | 5600 |
| Organic Load | (kg/d BOD₅) | 2.8 |
| Power Supply | Customizable | AC220V/AC380V/AC440V |
| Certificate | Standard | MEPC.227(64) And GB3552-2018 Article 5.2.2 and 5.2.4 |
| Total Power | kW | 4.0 |
| Overall Dimensions | L(mm) | 1900 |
| W(mm) | 1416 | |
| H(mm) | 1770 | |
| Net Weight | kg | ~890 |
Key Specifications:
The system is constructed from carbon steel with an anti-corrosion coating system for durability in the marine environment. It operates on AC 415 volts at 50 hertz with a total installed power of approximately 4.0 kilowatts. The control system offers both automatic and manual operation modes, with IP44 protection for all electrical components. The unit is designed for ambient temperatures from 0 to 55 degrees Celsius and relative humidity up to 90 percent.
Main Components:
The DY-80 includes a crushing pump for influent maceration, a blower for aeration supply, a membrane bioreactor module for solid-liquid separation, an ultraviolet sterilizer for final disinfection, a plunger pump for effluent discharge, and a fully integrated electrical control box. All components are mounted on a common base frame for straightforward installation and alignment.
Conclusion:
The DY-80 Marine Wastewater Treatment Plant offers shipowners and operators a reliable, fully compliant, and low-maintenance solution for onboard sewage treatment at 5,600 liters per day. Its robust construction, advanced treatment technology, and comprehensive certification provide peace of mind for environmental compliance throughout the vessel's service life.
