Can the defatted alkaline solution be discharged on-site after being neutralized with acid to achieve a pH of 8?
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For degreasing oxygen pipelines on-site, hydrogen and sodium hydroxide are used for alkaline cleaning; after the cleaning, the waste liquid is neutralized with acid. Can this type of waste liquid be sent to the factory’s wastewater treatment system for processing? The wastewater treatment system at the new factory is still under commissioning.
Can it be discharged at 8? After all, it’s still weakly alkaline
Faced with such a question, one feels both amused and frustrated. There are no parameters for wastewater after neutralization, no wastewater treatment processes, and no design parameters for such processes either. . . . Without any conditions, how can we help you solve the problem? Do I have to write a paper too? ! Should I discuss Hypothesis 1 in detail for you?
It can be queued, just queue it normally. If the wastewater is under pressure and it can be stored, that’s also a good option.
Thank you for your answer. It turns out that the owner has agreed to discharge the neutralized degreasing solution into the sewage treatment system. As a result, half of the degreasing process had been completed, but work was halted again today, causing the degreasing process to be suspended. We have to use tank trucks to take it away, claiming it’s waste liquid from our construction work; the owner isn’t responsible for it. It’s driving me crazy.
It exhibits weak alkalinity, so it can be excreted :victory:
The COD of degreased water is likely to be relatively high; as a precaution, it’s better to carry out pretreatment first and then decide whether to feed the water in depending on the situation. Otherwise, the impact will be relatively large
It can enter the wastewater treatment unit.