Control of dissolved oxygen in hydrolytic acidification
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In hydrolytic acidification, is it optional to keep it within its controlled range, and is it necessary to adjust it?
There is no need to control dissolved oxygen; what is necessary is to control the acidity level, which depends on the characteristics of the water quality – for example, 30% or higher – and the acidity level can be achieved through the retention time. But necessary stirring is required to ensure uniform acidification.
I think it should be under control, as this is not just a stage for adjusting acidity and alkalinity; it can also serve to create an environment with low oxygen or anaerobic conditions. Given the characteristics of water distribution, it functions like a UASB reactor, and it would be better to keep the level below 0.5 mg/L
I think it needs to be controlled; complete anaerobic conditions are impossible. But if stirring is used, then the dissolved oxygen level must be controlled, usually at 0.5 or below 0.8