Ship oil-water separator is an industrial device used to treat oily wastewater from the bottom of ship engine rooms, which can meet the IMO MEPC. 107 (49) resolution discharge standards for oily bilge water.
The installation of ship oil-water separators must strictly comply with equipment technical specifications and relevant ship regulations to ensure stable operation and meet sewage treatment and discharge standards after installation. The core installation requirements are as follows:
1. Fixed installation of equipment: All components of the device must be uniformly installed on the "device base" welded from channel steel, and then firmly connected to the "ship base" preset in the ship's engine room through high-strength bolts to ensure a tight and secure connection. During the installation process, it is necessary to calibrate the levelness of the equipment to avoid displacement or abnormal operation caused by cabin vibration. At the same time, sufficient maintenance space should be reserved for subsequent equipment maintenance, disassembly, and component replacement.
2. Pipeline connection requirements: The diameter of the oil and sewage suction inlet at the bottom of the cabin and the discharge outlet of the treated liquid must meet the design standards, usually DN20; The diameter of the separated dirty oil discharge outlet is generally DN20. When connecting pipelines, suitable sealing components should be used to ensure that there is no leakage at the interface and prevent oil and sewage leakage from polluting the engine room environment. At the same time, the pipeline layout should be reasonable and smooth, reducing bends and resistance. The suction inlet should avoid areas in the cabin where debris is prone to accumulate, in order to avoid clogging the equipment with impurities; The discharge pipeline should be clearly distinguished from the treated standard discharge pipeline and the return pipeline to ensure smooth switching.
3. Power configuration specifications: The power supply should meet the rated parameter requirements of the equipment, usually AC380V, 3 Φ, 50Hz. The power line should be connected to the equipment's built-in electrical control box in a standardized manner, and the wiring should be firm and insulated to avoid electrical faults such as short circuits and leakage. The installation position of the electrical control box should be away from damp and oily areas, and waterproof and oil proof protection should be taken to ensure the normal operation of electrical components; At the same time, corresponding overload protection and leakage protection devices should be equipped to ensure electrical safety.
4. Installation of liquid level monitoring device: The bilge water level probe should be accurately led to the designated position of the bilge water collection well in the engine room to ensure real-time and accurate monitoring of the oil and sewage level in the collection well. The installation height of the liquid level probe should meet the requirements of the equipment control logic, ensuring that the equipment can start or stop in a timely manner according to changes in liquid level, and avoiding equipment idling or oil overflow in the collection well due to inaccurate liquid level monitoring.
5. Requirements for adapting to the cabin environment: The installation location should be selected in an area with good ventilation and low vibration inside the cabin, away from heat sources, fire sources, and corrosive gas areas, to prevent high temperature and corrosive environments from affecting the service life of equipment components. If there is strong electromagnetic interference in the cabin, shielding measures should be taken for the electrical control system of the equipment to avoid interfering with the normal operation of the equipment.
6. Regulatory compliance requirements: The installation process must comply with relevant regulations such as MARPOL Annex I and the "Emission Control Standards for Water Pollutants from Ships" (GB 3552-2018). Oil water separators (including 15ppm alarm devices) for ships with a total tonnage of 400 tons or more must be inspected and certified by a ship inspection agency after installation; The automatic shutdown device equipped on ships of 10000 gross tons and above must be smoothly linked with the oil-water separator and discharge pipeline to ensure timely triggering of shutdown and path switching functions when exceeding the standard.