Odor Online Monitoring System Technical Description

The traditional triangle odor bag method mainly relies on the subjective judgment of professional odor assessors, which is not only cumbersome and costly to operate, but also difficult to achieve real-time monitoring and traceability. The emergence of the Odor Online Monitor has overcome these shortcomings.

It achieves 24-hour continuous monitoring of factory boundaries or regional environments through the collaborative work of sensor array technology, IoT data transmission, and big data analysis platforms. Once the monitoring data exceeds the preset threshold, the system immediately issues an alarm through the platform or SMS, and can link with the sample retention system to automatically collect gas samples at that time for subsequent laboratory precision analysis to accurately trace the source of pollution.

The system is currently widely used in garbage disposal sites, sewage treatment plants, chemical parks, breeding farms and other places prone to odor, helping enterprises and environmental protection departments establish a closed-loop management mechanism of "monitoring-early warning-traceability-governance" to enhance the predictability and accuracy of environmental supervision.

Detection Items

Comprehensive evaluation of odor intensity: The system collects concentration signals of various gases through an array sensor, combined with a built-in odor intensity model, directly outputting dimensionless odor concentration OU values, enabling machine monitoring results to correlate with human olfactory perception.

The system can conduct qualitative and quantitative analysis of typical malodorous substances specified in national standards, mainly including:

Sulfur compounds, such as hydrogen sulfide, methyl mercaptan, dimethyl sulfide, dimethyl disulfide, etc., which come from sewage treatment, garbage disposal sites, etc.

Nitrogen compounds, such as ammonia, trimethylamine, etc., commonly found in farms, chemical plants and food processing industries.

Volatile organic compounds, such as styrene, TVOC, etc., mainly from chemical, spraying and other industries.

Environmental and meteorological parameters: To more accurately analyze the diffusion pattern and traceability of odors, the system usually integrates a meteorological monitoring module to simultaneously measure parameters such as temperature, humidity, wind speed, wind direction and atmospheric pressure. These data help build odor diffusion models and predict pollution impact ranges.