Have those of us working in sewage treatment ever calculated the nitrogen balance, COD balance, and phosphorus balance in sewage treatment processes?
Thread Content
Everyone, I would like to ask: those of you who work in sewage treatment, have you ever calculated the nitrogen balance, COD balance, and phosphorus balance in sewage treatment processes? Is this a question asked by the boss?
However, for the simplest processes, such as CAST, there is no need for calculations when discharging at level 2 or level 1B directly
It generally needs to be calculated, and many design manuals can be used as a reference for such calculations! Only by calculating it can you determine whether what you’re doing is reasonable (especially for beginners); even if it’s not, you’ll know where the mistake lies in the future. I don’t like things based on experience without any data!
I haven’t calculated it specifically~ There should be a standard line when it was designed back then~ Looking forward to advice from experts
When preparing calculation sheets, balance calculations are generally carried out for COD, BOD, N, and P – that is, it is determined what the values are for the inlet water, what they are for the outlet water, and how much needs to be removed; all of these aspects are taken into account in the calculations. But what these turn into, and at which specific stage that happens, is generally not determined, nor can it be determined; only those who conduct research do so, such as in calculating the carbon balance of COD, determining how COD is converted into carbon dioxide, methane, etc.
This definitely needs to be taken into account, especially by environmental protection companies, as they need to assess the economic benefits associated with it. Although everyone says that investment in environmental protection is necessary, there is no market for such efforts without any economic benefits. The simplest way to calculate this is by subtracting the concentration of pollutants after treatment from the initial concentration, and then multiplying that result by the amount of treatment applied; the resulting value represents the amount of treatment done. Of course, this is a theoretical calculation, and in practice the results are not so precise due to various human factors and the instability of impurities.