High levels of oil and COD in the sewage collection tank! How to solve it? ?
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My workshop has a wastewater collection tank; over time, a thick layer of silt has accumulated at the bottom of the tank. There is also an oil layer floating on the surface of the wastewater, consisting mainly of benzene and ethylbenzene and other benzene derivatives. The current method of treatment involves manually removing the oil from the surface, but this still does not meet the discharge standards, which require a COD level of less than 500 ppm and an oil content of less than 50 ppm. I’m seeking advice from everyone – does anyone have any effective solutions? It is said that there is a flocculant that can aggregate the oil on the water surface, allowing it to be collected! Who has used it! Help! Thank you!
How lazy are you all? Why don’t you arrange for workers to remove the mud while the vehicle is parked?
The sewage collection tank is an underground tank; we also want to clean it, but every time we prepare reports and plans, nothing gets done, and it has been postponed until now. Now environmental inspections are more strict! Ah! It’s hard to put into words!
Hello, our company specializes in producing equipment for treating oily wastewater! A plan can be designed according to your requirements! Hope to cooperate! ---Yangtze River Energy Technology Company
The workshop didn’t originally have any sewage treatment facilities; was there only a sewage collection tank? It is recommended that you test the quality of the wastewater from the workshop to see if it meets the discharge requirements; if not, additional wastewater treatment facilities will be necessary. If it’s just for degreasing, you might want to consider an oil skimmer. If it’s a temporary situation, you can consider using a sewage pump to remove the sludge from the bottom of the pool.
Dig out a small amount of sludge manually for testing; if it can be treated as municipal sludge, then that’s fine. Have the municipal authorities come and remove the sludge. As for the floating oil, a liquid separation system will suffice. But overall, it’s best to find another environmental protection company to carry out the necessary modifications. Your wastewater isn’t difficult to handle based on current information. However, if you’re caught once, the fines imposed will be higher than the cost of making the modifications, so it’s still more economical to carry out the repairs
Flocculation can be used for benzene derivatives, but it’s not impossible; use it with caution