Top Grease Trap Manufacturer | Custom Wastewater Pretreatment Solutions

As a grease trap manufacturer, Qingdao Jinwantong provides customized grease separation equipment for commercial, industrial and food wastewater pretreatment. A grease trap, also called a grease interceptor, grease separator or FOG removal unit, is used to intercept fats, oils, grease, floating scum and some settleable solids before wastewater enters drainage pipes, municipal sewers or downstream treatment systems.

Grease traps are widely used in restaurants, hotels, canteens, central kitchens, bakeries, food processing plants, catering facilities and other sites where oily wastewater is generated. In daily operation, wastewater may contain cooking oil, animal fat, vegetable oil, sauces, cream, food residues, detergents and suspended solids. If these pollutants are discharged directly, grease may cool, solidify and attach to pipe walls, causing blockage, odor, slow drainage and increased maintenance costs.

The working principle is based on gravity separation. Wastewater enters the inlet chamber and the flow velocity is reduced. Because grease is lighter than water, it floats to the surface. Heavier food particles and solids settle at the bottom. The middle water layer then flows through the outlet to drainage or further treatment.

A typical process is:

A complete grease trap may include an inlet pipe, flow baffle, separation chamber, grease storage area, solids settling zone, outlet pipe, removable cover, sealing structure, cleaning access, sludge discharge section and optional monitoring components. For commercial kitchens, stainless steel is commonly preferred because it is hygienic, corrosion-resistant and easy to clean. For larger industrial or outdoor projects, carbon steel with anti-corrosion coating, FRP or other suitable materials can also be considered according to wastewater characteristics.

For correct selection, buyers should provide flow rate, peak discharge, grease concentration, suspended solids content, wastewater temperature, pH, number of sinks or production lines, operating hours, installation space, indoor or outdoor placement, inlet/outlet height, cleaning method and discharge requirements. These factors affect tank volume, retention time, structure design, material selection and maintenance access.

It is also important to understand the treatment boundary. A grease trap mainly removes separable FOG and settleable solids. It cannot completely remove emulsified oil, dissolved COD, detergents, nutrients or soluble pollutants. If the wastewater must meet stricter discharge standards, the grease trap may need to work with CPI oil-water separation, dissolved air flotation, chemical dosing, filtration, biological treatment or packaged sewage treatment systems.

Qingdao Jinwantong supports customized grease trap manufacturing and related wastewater treatment equipment supply. Buyers can send wastewater source, flow rate, grease load, site layout, material preference and treatment target for technical selection and quotation.