OnLine BOD-COD Pollution Monitoring System (OPMS)

• A substitute for the official analytical method (manual BOD/COD measurement) that permits automated, high-frequency measurements of organic pollutants in effluent.
• Measurements at a short measuring cycle (4 minutes minimum) rapidly capture dramatic changes in organic matter or abnormal effluent.

➔ Provides data for voluntary effluent management and report data agreed to by local government.

• Converting the measured TOC values into COD values allows applications to COD total volume control.
• TOC ⇒ COD conversion functions are installed as standard.

• Measurements at a short measuring cycle (4 minutes minimum) rapidly capture fluctuations in organic pollutants in influent. Contributes to load control and prevention of abnormal effluent outflow in treatment systems.
• A TOC analyzer can detect all organic substances. It captures organic pollutants missed by UV detectors.
• Permits measurement of up to 6 flow lines for precise monitoring of a treatment facility.

• Permits continuous monitoring of all process water used in a plant.
• Measurements at a short measuring cycle (4 minutes minimum) rapidly detect malfunctions and accidents.

• Detects all organic substances, even in samples with suspended solids.

• An option can be attached to support high sensitivity measurements to 1 mg C/L full-scale.

• TOC measurement by acidify and sparg TOC also known as non-purgeable organic carbon (NPOC)
• TOC determination by difference between total carbon (TC) and inorganic carbon (IC)
  TOC = TC – IC (requires option)
• TOC determination by addition method of NPOC and purgable organic carbon (POC)
  TOC = NPOC + POC (requires option)

• The TN measurement option permits TN measurements using the catalytic thermal decomposition–chemiluminescence method (measuring ranges: 0–1 mg N/L to 0–10,000 mg N/L).

• The sampling unit for heavily polluted water incorporates a unique washing function and special operation sequences to control blockages and biological contamination. This reduces the maintenance frequency.
• The sampling unit for pure water restricts exposure of the sample to the environment and inhibits contamination of the sample from the environment.

• More economical as the need for multiple instruments is eliminated (reduced instrument and piping costs)
• Thorough internal and external washing reduces cross-contamination between flow lines

• TOC-4200 offers automatic dilution functions (×2 to ×50×) as standard.
• Dilution functions do more than extend the measurement range…
  • When measuring an acid, strong alkaline, or inorganic salt sample that may damage the instrument or consumables, the effect can be alleviated by diluting the sample.
  • TOC-4200 permits automatic dilution measurements, regardless of the measurement range.

• When measuring samples with high levels of inorganic salt, such as seawater, the inorganic salt can accumulate inside the combustion tube and cause physical blockage or deterioration of the combustion tube. This kit extends the tube-replacement period approximately ten times as compared to a normal combustion tube.

• Carrier gas purification function is installed as standard for 24-hour continuous operation by the online TOC analyzer. Purifying instrument or compressor air in a facility to produce carrier gas significantly reduces running costs.

• Compressed air is normally used as the carrier gas source but high-purity nitrogen gas can also be used as the carrier gas. Convenient when a nitrogen gas centralized pipe is available in a facility (optional).

• A gas cylinder (high-purity air) can be used in facilities where no instrument air pipes or compressor are available.
• The carrier gas-saving function is provided because using gas from a cylinder increases the running costs. (Carrier gas can be saved more efficiently as the measurement interval increases.)
• Using the carrier gas-saving function in combination with the normal carrier gas purification function reduces the frequency of compressor maintenance.

• 10 channels standard. Expand to 36 channels.
• Supported events are programmable.

• 2 channels standard. Expandable in 2-channel increments to 12 channels max.
• Select 4–20 mA or 0–16 mA output.

• Supports 3 flow lines max. (optional).
• Dedicated flow inputs (for load calculations).

• (1) 20,000 measured values
  (approx. one year’s data at a 30-minute measuring cycle)
• (2) History of 100 calibrations (weekly calibration over approx. two years)
• (3) History of 100 alarms