What is the typical concentration of VOCs in the foul gases from wastewater treatment plants?
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Dear experts, I would like to ask: what is the typical concentration of VOCs in the foul gases emitted by wastewater treatment plants?
There are slight differences depending on the operating conditions; it is generally around 400 ppm
Does the refinery need to be larger? What’s the approximate size?
You need to go to the site for a specific inspection
I haven’t really studied this before either; generally, which pool does it come from? Are there any regulations or requirements regarding the disposal of VOCs?
You analyze it yourself; it’s definitely the place with the highest processing efficiency that generates the most waste gas
Different substances have different concentrations at which their odor can be detected; some exhibit a noticeable odor at just a few ppm, while others show little to no odor even at several hundred ppm
This depends on the type of wastewater, the level of sealing, and the frequency of ventilation. Under normal conditions with proper sealing and ventilation 3 times per hour, the total VOC concentration will not exceed 200 mg/m3
The actual measurement in Plant 1 was around 300 mg/m3
At what VOC concentration level is it necessary to install a cover for treatment? Do all septic tanks need to be covered?
It varies slightly depending on the type of wastewater; generally, it is 50-300