Reactor type instrument for quickly determining biochemical oxygen demand
A biochemical oxygen demand and rapid determination technology is applied in the structural design of a reactor-type rapid biochemical oxygen demand determination instrument and in the field of rapid determination and analysis instruments for biochemical oxygen demand. Inconsistencies in microbial activity status, etc., to achieve the effects of easy development and on-site use, overall volume and weight reduction, and expanded linear measurement range
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[0017] Carry out the mensuration of standard BOD sample with the instrument provided by the present invention.
[0018] Prepare standard GGA solutions with BOD concentrations of 5mg / l, 20mg / l, 50mg / l, 100mg / l, and 200mg / l for 15min detection. The test conditions are: water bath at 30±1°C, diluted with deionized water, and the aeration rate is 400-600ml / min. The GGA standard solution with a BOD value of 5 mg / l took the shortest time to reach equilibrium, which took 5 minutes, and the GGA standard solution with a BOD value of 200 mg / l took the longest time to reach equilibrium, which was 13 minutes.
[0019] The test results show that the detection range of the instrument is 0-200mg / l, and the linear correlation coefficient achieved by the measurement is 0.996, which meets the requirements of the actual wastewater on-line measurement.
[0020] The linear correlation coefficient of the standard curve is 0.9908, and the standard equation is ΔDO=0.0082×BOD.
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