Many restaurants and restaurants in the catering industry produce lampblack, which is discharged outside without any organization or purification. Oil fume contains a large amount of hydrocarbons, which can easily mix with other dust in the atmosphere to form inhalable particulate matter and destroy air quality. Edible oil smoke is one of the main sources of volatile organic compounds (VOCS) and PM10 (inhalable particulate matter, particulate matter less than 10 microns) in the atmosphere. The strong permeability and viscosity of oil fume have a great influence on the surrounding environment. The research shows that cooking fume is the second largest air pollution source in urban areas after automobile exhaust.
Smoke pollution has become one of the hotspots of environmental complaints of urban residents. To carry out oil fume purification in urban catering industry, protect urban environment, reduce urban air pollution and protect residents'health. The facilities of direct smoke exhaust in restaurant service places should be renovated to promote efficient smoke purification equipment and focus on the key areas of smoke pollution in restaurants.
Our country has promulgated the relevant standard "Fume Emission Standard for Catering Industry". According to the size of catering units, it can be divided into small and medium-sized units. The minimum removal rates of the fume purifier are 60%, 75% and 85% respectively, and the maximum allowable emission concentration is 2.0mg/m3. The fume emission management of the existing catering industry units is specific.
In terms of the standard of lampblack purifier, the efficiency of purple bamboo lampblack purifier for catering is over 98%, which meets the environmental protection standard. The lampblack purifier is smokeless at the exhaust port and can remove most of the lampblack odor. It can solve the complaint of cooking fume in restaurants for users. Therefore, the restaurant industry does not install cooking fume purifier, not only affect the health of the surrounding residents, encounter complaints, but also be punished by the environmental protection department. Therefore, it is important and necessary to install lampblack purifier in catering industry.
The use of lampblack purifiers in catering enterprises has become a trend of development. Facing the increasing population growth, the increasing number of catering units and the increasing pressure of lampblack emission pollution from foreign catering enterprises, the concept of green development, food squares, shopping malls or large hotels, as small as banning roadside barbecues and improving night market stalls, all contribute to China's environmental protection actions.