Automatic pollution source monitoring solution

The pollution source automatic monitoring solution consists of a monitoring and analysis subsystem, a sampling preprocessing subsystem, a data collection and transmission subsystem, a remote monitoring subsystem, a station supporting subsystem and a sewage outlet standardized construction subsystem.

The pollution source automatic monitoring solution consists of a monitoring and analysis subsystem, a sampling preprocessing subsystem, a data collection and transmission subsystem, a remote monitoring subsystem, a station supporting subsystem and a sewage outlet standardized construction subsystem. This solution can real-time monitor conventional parameters such as pH value, chemical oxygen demand (COD), ammonia nitrogen, total phosphorus, total nitrogen, and flow rate, as well as heavy metal pollutant factors such as hexavalent chromium, total chromium, lead, cadmium, mercury, arsenic, copper, zinc, and nickel. The scheme design strictly follows the "Technical Specifications for the Installation of Water Pollution Source Online Monitoring Systems (CODCr, NH3-N, etc.)" (HJ 353-2019), "Technical Specifications for Data Validity Identification" (HJ 356-2019), "Technical Specifications for Acceptance" (HJ 354-2019), "Operation Technical Specifications" (HJ 355-2019) and "Data Transmission Standards for Pollutant Online Monitoring Systems" (HJ 212-2017) and other national environmental standards.

The core architecture of the pollution source automatic monitoring solution includes: monitoring and analysis subsystem (responsible for pollutant concentration detection), sampling preprocessing subsystem (implementing sample collection and purification), data collection and transmission subsystem (complete data collection, storage and upload), remote monitoring subsystem (real-time monitoring of equipment operating status), station supporting subsystem (providing a stable operating environment) and sewage outlet standardized construction subsystem (ensuring sampling representativeness). The system can dynamically monitor key indicators such as pH, COD, ammonia nitrogen, total phosphorus, total nitrogen, and flow rate, and simultaneously analyze heavy metals and characteristic pollutants such as hexavalent chromium, total chromium, lead, cadmium, mercury, and arsenic.

It adopts advanced modular analysis technology and intelligent flow path switching design to achieve low reagent consumption (reagent consumption for a single analysis ≤5mL), high measurement accuracy (relative error ≤±5%) and low operation and maintenance costs (annual consumables costs are reduced by more than 30%).

It has fully independent intellectual property rights, supports 7×24 hours of unattended operation, and integrates automatic calibration (daily zero/span calibration), fault self-diagnosis (sensor anomalies, pipeline blockage, etc.) and remote control functions (data query, parameter configuration).

The hardware adopts standardized module interfaces to support rapid expansion of new monitoring factors (such as volatile organic compounds, biological toxicity, etc.); the software provides an open API that can be connected to enterprise ERP systems or government supervision platforms to meet customized needs.

The monitoring instrument has a built-in multi-range adaptive switching function (low range 0-100mg/L, medium range 0-500mg/L, high range 0-2000mg/L), and supports instant measurement, scheduled periodic measurement (10-180 minutes adjustable) and external trigger measurement mode.

The overall design of the system follows the principle of "reliability first, economical and applicable". The station building adopts anti-corrosion and thermal insulation structure. The mean time between failures (MTBF) of core components is ≥1600 hours. The annual operation and maintenance cost is controlled within 15% of the total equipment investment.

This solution is widely used for normal monitoring and emergency warning in scenarios such as wastewater discharge outlets of industrial enterprises, municipal sewage treatment plants, centralized sewage outlets in industrial parks, cross-border river sections, and urban comprehensive sewage pipe networks.