Detailed information on RODTOX NG online BOD toxicity automatic detector

RODTOXIt is a high-precision, easy-to-use, and stable online instrument. The sludge can be automatically switched, and after completing a cycle of detecting BOD and toxicity data, it can continue to automatically cycle to detect the next sample. Due to the use of electromagnetic driven diaphragm metering pumps, advanced PLC systems, and software systems to enhance measurement accuracy, RODTOX's precision is close to laboratory data and has achieved better stability. RODTOX comes with a filtering and self-cleaning system, making it more convenient to use and easier to maintain. In short, RODTOX is a reliable instrument for municipal and industrial wastewater detection.

Application Fields

• Online BOD and toxicity testing analysis for municipal and industrial wastewater.
• Optimize the control process of sewage treatment plants.
• Detect the toxicity of wastewater at the inlet of the sewage treatment plant.

characteristic

• The detection is based on microbial respiration in a container filled with activated sludge, using activated sludge provided by the sewage treatment plant.
• Using activated sludge provided by the sewage treatment plant, the BOD value is very close to the laboratory BOD520 value (r>0.95).
• Fault, toxicity monitoring alarm.
• Equipped with filtering and self-cleaning system.

Main principles

RODTOXIt mainly consists of two parts: microorganisms and electrons. The microbial part consists of a temperature controlled reactor. The container is filled with 10L of activated sludge, which is continuously aerated and stirred once in operation, continuously detecting the concentration of dissolved oxygen in the water. Injecting biodegradable standard solution into the reactor can cause the dissolved oxygen concentration in the water to reach a peak, and the curve area and peak are proportional to the increased BOD value. The use of a large amount of sludge during respiration is a measure to control the activity of activated sludge. By comparing the respiration process of the unknown solution with that of the standard solution, the BOD value of the unknown solution can be obtained. By comparing the peak values of the standard solution before and after adding the sample, the biological toxicity in the sample can be determined.

TECHNICAL INDEX

• Measurement parameter: BOD - toxicity
• Measurement range: 0-500000 mg BOD/l; 0-100% toxicity
• Preparation of samples and sludge: taken from the sewage plant itself
• Shell: Steel shell, adaptable to various weather conditions
• Protective layer: IP54
• Size: 1800 x 600 x 500 mm
• Environmental working temperature: 10-30 ℃
• Sewage filter cartridge 0.5 mm

Output and Connection

• Power supply: 230V/115V 50/60Hz
• Sample inlet and outlet: 40mm outer diameter PVC pipe
• Sludge inlet and outlet: 40mm outer diameter PVC pipe
• Wastewater flow rate: approximately 10-50L/min
• Sludge flow rate: approximately 10-50L/min

communication

• BODToxicity output: 4-20mA
• Digital communication: relay contacts (faults, toxicity monitoring alarms)
• Ethernet and USB

Laboratory analyzer Rodtox NG

Rodtox NGIt can also be used as a laboratory instrument in the laboratory. Because the instrument can be divided into automatic mode and manual mode. When applied in laboratory analysis, the manual mode of the instrument can be used for measurement. Combined with an automatic sampler, it can achieve automatic analysis in laboratory environments.