Biochemical-performance evaluation of industrial waste water
An industrial wastewater and evaluation method technology, applied in the direction of testing water, measuring devices, instruments, etc., can solve the problems of high content of refractory substances in wastewater, ignoring the inhibition effect, and long measurement cycle, so as to achieve simple and fast measurement methods and avoid time-consuming The effect of laborious and simple measurement method
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[0032] Specific embodiment 1: This embodiment evaluates the biodegradability of industrial wastewater according to the following method:
[0033] (1) Determination method of oxygen consumption rate
[0034] The dissolved oxygen meter is used to measure the oxygen consumption of endogenous respiration and biochemical respiration, draw the biochemical respiration line and the endogenous respiration line, and use this to qualitatively evaluate the difference in the biodegradability of different wastewater. At the same time, the ratio of biochemical oxygen consumption to endogenous respiratory oxygen consumption—relative oxygen consumption is used to quantitatively evaluate the biodegradability of wastewater.
[0035] 1. Measuring equipment
[0036] ①Precision dissolved oxygen meter;
[0037] ② Dissolved oxygen bottle;
[0038] ③ Constant temperature water tank;
[0039] ④Oxygen pump;
[0040] ⑤ pH meter.
[0041] See the measuring device figure 1 , Using 850 precision dissolved oxyg...
Example Embodiment
[0069] Specific implementation manner 2: Papermaking wastewater, pharmaceutical wastewater, and nitro chemical wastewater are selected for biodegradability determination. The determination method is as follows:
[0070] 1. Determine the endogenous respiratory oxygen consumption rate and the biochemical oxygen consumption rate of different wastewater
[0071] According to the measurement method introduced in the first embodiment, determine the endogenous respiration oxygen consumption rate and the biochemical oxygen consumption rate of different wastewater, and draw the wastewater biochemical respiration line, see image 3 .
[0072] 2. Calculate the relative oxygen consumption ROC in 30 minutes 30
[0073] according to image 3 The result of Calculate the ROC of different wastewater 30 They are: papermaking wastewater 1.12, pharmaceutical wastewater 0.88, and nitro chemical wastewater 0.78. It is preliminarily determined that these types of wastewater have poor biodegradability....
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