Technical discussion: Wastewater treatment process for EPS
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The last edit to this post was made by hesonchang214 on 2012-6-25 at 21:31. Foam polystyrene (EPS) production plants generate large amounts of wastewater; after simple treatments such as coagulation and clarification within the plant, the COD level of the effluent (sent to the plant’s wastewater treatment facility) is around 800–1000. It is now planned to use biological aerobic treatment followed by sand filtration in order to meet the third-level standards specified in GB8978-1996. For industrial wastewater, this can only be considered a low-concentration water quality. But for such effluent, what is a more reasonable (or better) way to handle it? Are there any peers in China who operate EPS production facilities online? Let’s exchange ideas!
Do you want to reuse it or just ensure compliant discharge?
The third-level standard is still easy to achieve. It is somewhat difficult to meet the first-level emission standards. Using the process mentioned by LZ, achieving level 3 should not be a problem; it’s just necessary to refer to relevant materials more closely or take a more conservative approach when it comes to the details of the design parameters.
Reply to 2# li2355433: It’s just meeting the standards for regulated emissions!
The poster can consider using the AB method, as adsorption tanks are quite effective in treating polymeric organic substances.
The third-level standard is still easy to achieve. It is somewhat difficult to meet the first-level emission standards. Using the process mentioned by LZ, achieving level 3 should not be a problem; it’s just necessary to refer to relevant materials more closely or take a more conservative approach when it comes to the details of the design parameters. But for such wastewater, what is a more reasonable (or better) way to handle it? Did the xx League pay out money today?
If different systems are used for EPS, the levels of salts and suspended solids in the wastewater vary, as does the COD value. The question posed by the original poster is not specific enough, and the response provided is not precise enough, which can lead to misguidance.