Catering industry refers to the oily wastewater and the food industry in the process of operation in sewage water pipe, oil is characterized by a high, especially in the Chinese diet makes the sewage in the oil and total suspended particles content is particularly high, the fat content in 7600 MG/ L, total suspended particles in around 5000 MG/ L. First: it has two big risks, a lot of oil and residue easily adhesion in the water pipe wall, accumulate over a long period make the pipe flow area is smaller and smaller, and finally become blocked. The second: a lot of oil through pipeline network finally into the sewage treatment plant, that is sensitive to oil biological bacterium a lot worse, death, causing water quality decreased obviously and the discharge of water pollution. So the oily sewage catering industry for a long time to the problem of oil is always chasing to solve and can not solve the problem. The fundamental reason is that there is no good product or on the effluent water quality and the price can be accepted by the market product.

YM type unpowered catering sewage drain, work principle and technical analysis Type YM unpowered catering sewage drain apparatus is to provide a the gravity method, biochemical method in combination with mechanical filter aperture processing ability, high separation efficiency of oil bearing sewage filter. First, oily water into regulating barrels, in regulating use of wastewater in the container inside bucket of about half a small time residence time, flow stability, the discrete oil and scum in the water soon rose to the surface of water, particles larger impurities sink on the bottom of the barrel, a baffle plate and outlet into the biological filter, from the entrance of the bottom of the filter, respectively, from bottom to top through each layer of filter slices into the hole over the intercept dam into the cofferdam sedimentary area, because the increase of surface area and to extend the cofferdam interception filter unique structure design and the length of the dam oily materials, sewage flows through the filter of the water flow slowly, and in good contact with the filter surface's microbial growth. Microorganisms will be grease in wastewater contains tiny particles

YM unpowered catering sewage drain is compared with other existing technology has the following advantages:

(1). High removal efficiency, YM unpowered catering sewage drain device combined with three ways to strengthen treatment of wastewater, improve water quality, real can meet the requirements of the national discharge standard.

(2). The structure is unique, new design, away from the traditional introduced a new design idea, structure reflected in the leading position in the similar products.

3. Simple structure, reliable, low production cost and use cost. YM unpowered catering sewage drain is abroad for more than ten years history, the use of use is very stable and reliable, in market share of 70% in the United States. In the domestic price of this product is much lower than the air-flotation products such as price, for the majority of small and medium-sized restaurants, fast-food restaurant chain, replace civil separation tank high energy-saving new products.

(4) cover an area of an area small, construction is convenient, the earthwork about 2 m3, low engineering cost.

5. Each type YM unpowered catering sewage drain