the background

China is not only one of the most developed industry countries in the world, and Chinacuisine is one of the most cooking oil, food and beverage industry every day will producewaste water containing animal and vegetable fats and oils of. In order to make the oilreduction into the city sewage pipeline, oil discharge around the environmental protection departments of the catering industry has made various provisions, these Provisions are allcommon kitchen outlet must be installed oil cut-off device, the most widely used is theseparation of oil and water tank, a large part of the oil is trapped in the groove, the waste oilis referred to as the "drainage oil". Only in Shanghai of such waste oil production of about 1.5- 30000 tons. From these oil is a renewable resource is known, it became popular, a fishing oil recovery team will emerge as the times require. Only in Shanghai unlicensed fishing oilpersonnel as many as 1000 people, without a fixed place, no business license, no management of the "three no" waste oil treatment processing hundreds, of which a considerable part of the waste oil processing point after simple processing, as refined edible oil returned to the market, form a potentially serious threat to the health of residents. This phenomenon has become a national problem, CCTV and local media have been tracking reports on this phenomenon, has aroused great attention of governments all over the world