2 results about "Air quality management" patented technology

The application provides an intelligent air quality management method and system for an ammonia production plant, which monitors the oxygen concentration and ammonia concentration in the ammonia production plant through a gas monitoring unit; compares the oxygen concentration and ammonia concentration with preset oxygen concentration safety threshold and ammonia concentration safety threshold through a control unit, generates and issues a control instruction according to the comparison result, so as to control the oxygen production unit and the ventilation circulating unit in the ammonia production plant to operate according to the corresponding load of the control instruction; and connects a lightweight breathing terminal with the oxygen output interface of the oxygen production unit, uses the lightweight breathing terminal to obtain oxygen, realizes the establishment and maintenance of a dynamic balance system for the oxygen and ammonia concentrations in the ammonia production plant within the preset safety threshold range, and provides a convenient, sustainable and non-dependent mobile gas cylinder continuous oxygen supply mode for the staff in the ammonia gas leakage emergency state.

The application discloses a satellite ground measurement data and communication signaling fusion air pollution exposure assessment method. In a unified space-time framework, a regular space grid system and a unified time axis are constructed; multi-source environmental data are collected and preprocessed, a high space-time resolution multi-pollutant concentration field is constructed through a machine learning model; communication operator signaling data are acquired and processed, a user time-activity pattern is constructed through a stay point identification, a residence / work place determination and a path interpolation; individual exposure is calculated by fusing the concentration field and the activity trajectory, a dose-type exposure index is calculated by introducing an activity intensity mapping respiratory rate, a multi-pollutant comprehensive exposure index is constructed and multi-time scale statistical analysis is carried out, and an exposure result confidence interval is acquired through uncertainty modeling and Monte Carlo simulation. The application can finely depict a real exposure process of a population, support multi-pollutant collaborative exposure assessment, and provide a scientific basis for environmental health risk assessment and fine air quality management.