Guizhou Pomei Town Sewage Treatment Plant

Online Water Quality Monitoring Program at Wastewater Treatment Plants
An online water quality monitoring program at a wastewater treatment plant is an essential means of ensuring that treated wastewater meets discharge standards or reuse requirements. By continuously and in real time tracking key water quality parameters, the program enables effective evaluation of treatment performance, timely detection and resolution of process issues, and protection of environmental safety.

Key Categories of Online Water Quality Monitoring Parameters at Wastewater Treatment Plants

Physical Properties

Temperature: Affects microbial activity and the rate of chemical reactions.

Turbidity: Reflects the amount of suspended particulate matter in the water.

Color: Indicates the depth of water coloration, which may suggest the degree of organic pollution.

Chemical Properties

pH: Measures the acidity or alkalinity of water and is crucial for biological treatment processes.

Dissolved Oxygen (DO): The amount of oxygen necessary to sustain aerobic microorganisms.

Chemical Oxygen Demand (COD): Represents the amount of oxygen consumed by an oxidant under specified conditions to oxidize organic substances in water, indirectly reflecting the concentration of organic pollutants.

Biochemical Oxygen Demand (BOD): The amount of dissolved oxygen required by microorganisms to decompose biodegradable organic matter over a specific period.

Ammonia Nitrogen: Measures the ammonia‑nitrogen content in wastewater; excessive levels may lead to eutrophication of water bodies.

Total Phosphorus and Total Nitrogen: Controlling these nutrients helps prevent eutrophication.

Biological Indicators

Coliform Count: Serves as an indicator of the presence of pathogenic microorganisms and is used to evaluate the sanitary quality of water.

System Composition

Sensors and Analyzers: Different sensors and analytical instruments are configured according to specific monitoring requirements to measure the above water quality parameters in real time.

Data Acquisition and Transmission Unit: Converts data collected by the sensors into digital signals and transmits them to a data center via wired or wireless networks.

Data Processing Platform: Stores, analyzes, and visualizes the received data; supports historical data analysis, trend prediction, and automatic report generation.

Alert System: Automatically triggers alarms to notify relevant personnel when monitoring data exceed preset safety thresholds.

Application Value

Improved Management Efficiency: Environmental protection authorities and plant managers can quickly understand the operational status of treatment facilities through online monitoring data and adjust operational strategies in a timely manner.

Optimized Treatment Processes: Real‑time feedback allows precise control over each treatment stage, enhancing overall treatment efficiency.

Prevention of Environmental Pollution: The early‑warning function helps prevent the occurrence of non‑compliant discharges, protecting the surrounding ecosystem from contamination.