1. Industry background
Catering fume is one of the main sources of volatile organic compounds (VOCS) and PM10 in the atmosphere. In recent years, with the strengthening of environmental protection, the government has continuously strengthened the catering operators' full coverage of installing fume purifiers, but there are still some problems and loopholes in supervision.
(1) Poor awareness of active environmental protection: Most small and medium-sized catering owners believe that they can operate legally with the certificates of the industry, commerce, food and medicine departments, ignoring the environmental assessment approval, resulting in no standard requirements for the installation of kitchen fume purification facilities;
(2) The difference in installation effect is large: because the power of the fume purification facility directly affects the purchase and installation cost and the fume purification effect is too large, the catering owner appears to avoid the environmental pollution prevention responsibility There are a lot of complaints about the installation of oil fumes that do not have a good purification effect to disturb people;
(3) Difficult self-discipline supervision of merchants: During the inspection process, although the catering owner installed a fume purification device, the effect of conscious maintenance and regular cleaning was not obvious. It is not uncommon to see safety without use, bad without repair, without use of washing, and poor purification effect.
(4) It is difficult to monitor: the number of catering enterprises is huge, and full coverage cannot be achieved by human supervision; some purification equipment is installed in the ceiling, high-rise platforms, etc., resulting in insufficient supervision for supervisors; some monitoring projects require professional testing companies and professional equipment Multiple sampling and long-term analysis and appraisal are costly and difficult to enforce.
In order to control the emission of oil fume, the Ministry of Ecology and Environment recently released the " Emission Standards for Oil Fume Pollutants in the Catering Industry (Draft for Comment) ", which provides for the monitoring of oil fume. The draft opinion mentioned that based on the existing oil smoke monitoring technology, the implementation of cost and environmental impact assessment, the use of monitoring non-methane total hydrocarbons to facilitate the implementation of the standard.
Second, the solution
The fume online detection solution is to collect warning data on the operation status of the fume treatment equipment and the concentration of fume emissions, and automatically give warnings and warnings to enterprises with excessive emissions and abnormalities. To achieve emission reduction and environmental protection.
Method to realize:
1. On-site continuous monitoring of the working state of the fume purifier including the current, voltage, power, power consumption, and particulate matter of the fume purifier by installing the fume monitoring terminal.
2. The smoke monitoring terminal is connected to the 4G DTU, and the collected test values are quickly uploaded to the cloud monitoring platform of the government environmental protection department through the 4G network.
Three, program advantages
(1) Wireless networking
The communication equipment adopts industrial networking 4G DTU and other products with character networking, which has anti-jamming, online maintenance, and permanently online data terminal to achieve high-speed, stable and reliable data transmission functions.
The communication equipment supports TCP / UDP transparent transmission mode and environmental protection 212 standard protocol, which can quickly connect to the environmental monitoring cloud platform of the environmental protection department. Relevant protocols can also be customized according to platform access requirements.
The wireless networking solution can be installed without wiring, the construction is simple and convenient, and the construction cost is greatly saved.
(2) Full data monitoring of oil fume
The full data monitoring of oil fume includes the values of oil fume emission concentration, particulate matter, NmHc, etc., as well as the monitoring of the start and stop status and operating data (current, voltage, power, power consumption, etc.) of the monitoring fan and purifier.
(3) Abnormal alarm
The system can set alarm limits, and timely alarm when the emission exceeds the standard; monitor the operation status of the purifier, and upload alarm events such as shutdown and failure in real time.
(4) Statistical analysis
The system has the function of historical data statistics, which can analyze the running time and offline status of the purifier; analyze the proportion of alarms and ranking; so that the regulatory department urges the catering enterprises to rectify the equipment in time, and clean and maintain it regularly.
4. Industry Application
The fume online detection solution has become an online and information-based supervision method for catering enterprises, which has improved the efficiency of centralized management of decentralized catering enterprises and reduced the pressure on personnel in environmental supervision departments. Restaurant etc.
