Oil-water separator is an environmental protection and energy-saving technology introduced from Lu Sen, which is usually used for restaurant sewage treatment. Due to the requirements of environmental protection, the sewage from ship machinery discharged into rivers, lakes and seas must be treated and an oil-water separator is needed. The market price of oil-water separator ranges from several hundred to several thousand, and the quality varies greatly. There are also some fake and shoddy products. If you buy inferior products at a low price, the final price may be a set of nozzles or even a new engine. Therefore, when buying an oil-water separator, you must go to a regular maintenance station to buy mainstream brand products.