The distance between the smoke outlet and the sensitive targets in the surrounding environment after smoke purification and deodorization shall not be less than 20m The distance between the smoke outlet and the sensitive targets in the surrounding environment after smoke purification and deodorization of the oil smoke purifier shall not be less than 10m.

The high-altitude oil smoke emission shall comply with the following requirements:[photo] The smoke outlet shall be higher than the highest building in the 15-meter radius of 3 meters, and the food and beverage units with low-altitude oil smoke emission should be 2.5 meters above the ground, and the oil smoke emission should face the open place.

Make the direct face of the stairs and aisles of the restaurant fume purifier fume emission settings should be given full consideration to avoid the impact on nearby residents and keep it away from the closest air pollution and very sensitive to air pollution (such as residential buildings) and residents, fume emissions should be located in well-ventilated places, where it can be unimpeded and fully diffused; Avoid the building's patio, narrow alleys and other locations Installation of grease vents.

The pipeline in front of the fume vent should be reserved for closed circular sampling port to facilitate sampling and monitoring by the environmental protection department. Diameter of 15-18 centimeters of oil smoke vents shall not be discharged into the sewer. Smoke vents and external exhaust pipe layout neat and beautiful, and the appearance of the surrounding buildings in harmony.

Installation of online monitoring and concentration monitoring system and the installation of large and medium-sized catering enterprises included in the list of key emission units should be equipped with catering fume purifiers fume treatment and deodorization facilities online monitoring and concentration monitoring system. Small and medium-sized catering enterprises should be equipped with online monitoring system for oil smoke treatment and deodorization facilities, monitoring oil smoke treatment and deodorization equipment and fan switching and operating current.