Full-Spectrum Multi-Parameter Water Quality Sensor-BGT-WMPS(K4)

Core Functions

• Full-Spectrum Multi-Parameter Detection

• Spectral Range: 200–750 nm continuous scanning, accurately matching pollutant absorption peaks.

• Parameters Monitored: COD, BOD, TOC, Color, Turbidity, TP, TN, Ammonia Nitrogen (NHN), Nitrate, Nitrite, UV254, CODMn, and more (see full technical specifications).

• Anti-Interference Design: Automatic turbidity compensation algorithm eliminates the impact of suspended particles on optical measurements.

• Reagent-Free & Eco-Friendly Monitoring

• No chemical reagents required, avoiding secondary pollution.

• Reduces annual maintenance costs by more than 60%.

• Industrial-Grade Reliability & Ease of Use

• Plug-and-Play: Submersible installation with 5 m standard cable (customizable). RS-485 output (Modbus/RTU protocol), seamless integration with PLC/SCADA systems.

• Long-Term Stability: Xenon lamp light source lifespan >50,000 h; spectral drift <0.1 nm/year. Continuous operation for 6 months without maintenance.

• Low Power & Strong Adaptability: Power consumption only 5 W (12VDC), supports solar power supply. Operating temperature: 0–45 °C, resistant to corrosive water environments.

Technical Highlights

• Full-Spectrum Absorption Method:
  High-energy xenon lamp with fiber-optic spectrometer, resolution up to 0.1 nm. Sensitivity is 8× higher than single-wavelength sensors, supporting identification of over 500 pollutants.

• Intelligent Compensation Algorithm:
  Combines optical path attenuation and suspended solids correction to ensure COD measurement error ≤±5% F.S. (validated against HJ 924-2017 standard).

• Military-Grade Protection:
  316L stainless steel housing, IP68 waterproof rating (10 m underwater for 72 h). Anti-biofouling, resistant to strong acids and alkalis. Suitable for harsh environments such as wastewater plants and rivers.

• Multi-Parameter Fusion Output:
  A single device outputs up to 15 parameters simultaneously, covering organic pollutants, nutrients, and particulates—reducing equipment procurement costs by up to 80%.

  
  

Objectives and Significance of River and Lake Ecological Water Quality Monitoring

Monitoring Objectives: Physical Indicators: Water temperature, turbidity, and clarity.

Chemical Indicators: pH, dissolved oxygen (DO), COD (chemical oxygen demand), ammonia nitrogen, total phosphorus/total nitrogen (TP/TN), and heavy metals (such as lead and mercury). Biological indicators: Chlorophyll a (algae content), benthic biodiversity, and E. coli.

Let’s take a quick look at these water quality sensors, and for more information, you can view the product details.

1. COD Sensor (Chemical Oxygen Demand)

Purpose:

• Measures the amount of oxygen required to chemically oxidize organic compounds in water.

• Provides a quick indication of the total organic pollution load in surface water, groundwater, or wastewater.

• Widely used in industrial discharge monitoring, wastewater treatment plants, and river sections to evaluate pollution levels.

Notes:

• A higher COD value = higher organic contamination.

• Common methods: UV absorbance (254 nm) and reagent-based analyzers.

• Advantage: fast detection, suitable for continuous online monitoring.

2. BOD Sensor (Biochemical Oxygen Demand)

Purpose:

• Indicates the amount of oxygen consumed by microorganisms when degrading organic matter under aerobic conditions.

• Reflects the biodegradable fraction of organic pollutants in water.

• Used to assess whether water pollution may cause oxygen depletion, black odor, or aquatic life mortality.

Notes:

• Traditional method requires 5 days (BOD₅), making it slow.

• Online BOD sensors often use estimation models (based on COD/TOC correlation) or microbial electrode systems.

• Key application: inflow/outflow monitoring in wastewater treatment plants, and surface water quality assessment.

3. Ammonia Nitrogen (NH₃-N) Sensor

Purpose:

• Detects the concentration of ammonia nitrogen (NH₄⁺ + NH₃) in water.

• Indicator of domestic sewage, livestock wastewater, and chemical effluents.

• High levels cause eutrophication, algal blooms, and fish toxicity.

Methods:

• Ion-selective electrodes (ISE), optical colorimetric sensors.

4. Nitrate (NO₃⁻) Sensor

Purpose:

• Key indicator of agricultural non-point source pollution (fertilizer runoff) and wastewater discharge.

• Excess nitrates lead to algal growth and drinking water health risks (nitrite toxicity/carcinogenicity).

Methods:

• UV spectroscopy (190–230 nm absorption), ion-selective electrodes.

5. Total Nitrogen (TN) and Total Phosphorus (TP) Sensors

Purpose:

• Used to evaluate eutrophication risk in natural waters.

• TN includes ammonia, nitrite, nitrate, and organic nitrogen.

• TP mainly comes from sewage, detergents, and fertilizers.

• Elevated TN/TP levels → algal blooms (cyanobacteria outbreaks).

Methods:

• Online reagent-based analyzers (digestion + colorimetric), optical estimation.

6. ORP Sensor (Oxidation-Reduction Potential)

Purpose:

• Indicates whether water conditions are oxidizing or reducing.

• Useful for assessing redox-sensitive pollutants (iron, manganese, nitrates) and disinfection control.

• Common in wastewater treatment process monitoring and drinking water disinfection control.

7. Heavy Metal Sensors (Pb, Hg, As, Cd, etc.)

Purpose:

• Detects toxic heavy metal ions in water.

• Critical for drinking water safety, mining areas, industrial zones, and groundwater protection.

Methods:

• Electrochemical voltammetry (for portable/online monitoring), ICP-MS (laboratory standard).