BOD analyzer Microbial electrode method Biochemical oxygen demand intelligent BOD rapid detection instrument

Description :

　　BOD rapid analyzer

　　1BOD analyzer Microbial electrode method Biochemical oxygen demand intelligent BOD rapid detection instrumentOverview:

　　The traditional method for measuring biochemical oxygen demand (BOD5) of LB-50 BOD rapid analyzer is the standard dilution method, which requires a 5-day analysis cycle and is cumbersome to operate, thus causing inconvenience to sewage treatment and environmental detection. The LB-50 BOD rapid analyzer adopts the microbial electrode method, which can quickly determine the BOD value in water samples, and is easy to operate and accurate in measurement. The working principle of the LB-50 BOD rapid analyzer is based on the oxygen consumption metabolism of microorganisms towards organic matter. It can complete the measurement of a sample within 8 minutes, greatly reducing the time required for the measurement. This method complies with the requirements of the "Rapid Determination Method of Biochemical Oxygen Demand (BOD) Microbial Sensor for Water Quality" (HJ/T86-2002) and was listed as a Class A method in the "Water and Wastewater Detection and Analysis Methods" (Fourth Edition) published in 2002.

　　Bod detector

　　IILB-50typeBODMeasurement principle of rapid measuring instrument:

　　When a sample containing saturated dissolved oxygen enters the flow cell and comes into contact with a microbial sensor, the biodegradable organic matter in the sample is consumed by the bacteria in the microbial membrane, resulting in a decrease in the mass of oxygen diffused onto the surface of the oxygen electrode. When the diffusion rate (mass) of biodegradable organic matter in the sample reaches a constant value towards the bacterial membrane, the mass of oxygen diffusing onto the surface of the oxygen electrode also reaches a constant value, thus generating a constant current. Due to the quantitative relationship between the difference in constant current and the decrease in oxygen, within its linear range, the dissolved oxygen consumed is proportional to the concentration of organic matter. The dissolved oxygen electrode measures the decrease in dissolved oxygen and calculates the BOD value.

　　Microbial electrode method

　　IIILB-50typeBODTechnical parameters of rapid measuring instrument:

　　Measurement range: 1mg/L to 4000mg/L;

　　Repeatability: 10%;

　　Sample testing time: 8 minutes;

　　Injection method: constant current continuous injection;

　　Buffer solution consumption: 4.5ml/min;

　　Required sample volume: approximately 40ml per measurement;

　　Temperature range for use: 5 ℃ to 35 ℃;

　　Environmental humidity: ≤ 70%;

　　External dimensions: 560mm × 360mm × 200mm;

　　Weight: 20kg.

　　Biochemical Oxygen Demand Tester

　　4LB-50typeBODCharacteristics of rapid measuring instrument:

　　Principle - using microbial electrode method;

　　Accurate results - with strong comparability with the five-day method;

　　Easy to operate - microcomputer control, intelligent measurement;

　　Short measurement time - completing a sample measurement in 8 minutes;

　　Easy maintenance - simply replace the biofilm and infusion tube regularly;

　　Low cost - low consumable prices;

　　High reliability - simple structure, no vulnerable components, long lifespan.

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• BOD analyzer