The catering industry produces countless waste oils every day, and the topic of swill oil returning to the table has already been common.It is also common to install the oil and water separator inspection of unqualified events.Recently, the reporter in the Yanta District of the South Second Ring Road restaurant to see the evening there are special recycling vendors in to fish for gutter oil.At present, there are 738 restaurants in Xi ' an, which have been included in the sewage treatment scope.In order to minimize this pollution in Xi 'an, Xi' an has made a major rectification of the catering industry.

The sewage discharged by the city catering industry every day contains a large number of organic substances, edible oil and other pollutants, among which the average concentration of COD has exceeded more than 3 times the allowable discharge concentration of sewage in the municipal sewage pipe network.This not only made the city sewage treatment plant "indigestion", but also caused water pollution.To this end, the city requires all hotels, restaurants, restaurants, canteens and other 30 seats within the scope of the development zone, must install, construction of sewage, oil and water separator treatment facilities.

According to the treatment schedule, each district will complete the sewage treatment by the end of this year, 50% of the catering units, to ensure that the concentration of municipal sewage pollutants within the jurisdiction has decreased.