What is the best process for treating formaldehyde wastewater?
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The company generates 2 tons of formaldehyde wastewater per day, and it is difficult to treat. What treatment process would be the most suitable?
COD 235 BOD 98 Ammonia nitrogen 19.5 Suspended solids 59
For the previous set of smaller integrated treatment equipment, direct aerobic treatment is sufficient.
We use biological treatment for our formaldehyde wastewater! ! ! ! ! ! !
Ozone oxidation combined with biochemical treatment process
The previous set of small biochemical treatment units will do; if there are no other heavy metals or harmful substances present, it’s a good nutrient solution, and it would make a good gift for other wastewater treatment plants as well
Why is it a nutrient solution? Where is it best to use it?
There’s no problem treating wastewater at this concentration with ozone, right? Is biological treatment aerobic or anaerobic?
If the formaldehyde concentration is high, can’t the bacteria survive in such conditions?
COD 235, BOD 98, ammonia nitrogen 19.5, suspended solids 59.. Direct biochemical method
For example, in the A/O process, denitrification takes place in stage A, and a carbon source is required for denitrification. If the carbon source present in the water is insufficient, it needs to be supplemented; in some cases, methanol is used as a supplement for this purpose. Actually, the smaller integrated biochemical treatment system should work fine for this purpose; it’s convenient as well, and the water volume isn’t large.