Can the wastewater from benzene hydrogenation, **, and caprolactam be discharged up to standard?
Thread Content
It can be said that there is a current boom in the construction of caprolactam plants; all are undergoing environmental impact assessments and energy assessment procedures, and these have all been approved. My question is: can the wastewater treatment meet the required standards? I think it’s a bit difficult? ! ! Everyone can discuss this; helping the industry solve problems also raises awareness about environmental protection.
Isn’t caprolactam already being produced by factories? Its production wastewater mainly consists of peroxides and some hard-to-degrade organic substances; it should still meet the standards. The key is to reduce the treatment costs.
Oh, but these days it’s really difficult to produce organic products that meet the required standards after thorough inspection. So under current circumstances, where strict emission standards must be fulfilled, it’s unclear how this can actually be achieved; I’m seeking advice on this
The water quality I have come across: wastewater contains primarily peroxides, aromatic compounds, etc.; the COD level is generally between 3000 and 8000. Therefore, the common approach nowadays is to adjust the pH and then add ferrous ions to initiate a Fenton reaction, which allows the use of the existing peroxides. But the process is complex (requiring repeated adjustment of pH), and it is possible to ensure the control conditions and treatment effectiveness (due to issues with the order of addition, in my opinion). However, catalytic decomposition can also be used to remove peroxides, followed by biochemical treatment processes, which are cost-effective and simpler.
It is difficult, but there’s always a way; we can discuss it together
It’s not that it can’t be handled; rather, it’s a matter of whether the handling cost is in line with the company’s interests and whether it is affordable for the company.
It seems that the wastewater treatment for caprolactam at Baling Petrochemical meets the standards; I think the original poster could take this as a reference
From a technical perspective, it is certainly possible to achieve compliant emissions; the issues lie rather in the control of operating conditions during actual use and the associated operational costs.
It’s always very difficult to visit companies that produce organic chemical products these days; one can only turn to this place for help. If anyone is aware of such companies or is interested in them, please help by providing relevant information
Although I agree with your viewpoint and these are indeed common traits in the industry, as for whether we can truly achieve what we aim for, I think Sinopec doesn’t lack money; they should follow the requirements anyway
Is there a technical solution available?