Treatment of methanol wastewater
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Companies are under increasing environmental pressure; how should the wastewater generated during the methanol distillation process be treated? The available methods include those based on biochemistry, electrolysis, and even deep hydrolysis; however, most of these techniques are not yet mature. The Xuzhou water treatment plant is still conducting experiments at present, and the results have not been obtained yet. Let’s discuss which method would be more suitable for treating this type of wastewater.
Take a look at this case: http://www.studa.net/huanjing/060313/14594816.html
What is the COD value for methanol wastewater?
Methanol wastewater has very good biodegradability, so it is not a difficult issue to treat; the key is that high-concentration samples need to undergo gas treatment, or
What you mean is methanol residue, which has a high concentration and a COD value of several thousand. If your plant also produces synthetic ammonia, it can be used as a carbon source for the A/O nitrogen removal process. The amount is not too large; it can be stored and used later as a carbon source supplement for denitrification processes at local fertilizer factories. For individual treatment, anaerobic + aerobic treatment may need to be considered, along with the addition of appropriate amounts of nitrogen and phosphorus.
What is the best process route for wastewater treatment?
Thank you all for your suggestions; I’ve learned a lot from them
I would also like to ask what effective methods exist for the advanced treatment of methanol wastewater?
In fact, water containing methanol can be beneficial for the wastewater to be reprocessed in the next stage; if it is discharged directly, it should pass through a treatment device
The pH of methanol wastewater is between 7 and 9, with a COD level of around 1200 mg/L. It is necessary to reduce this value to below 80. The BOD/COD ratio should be at least 0.35, while the SS level of 150 mg/L needs to be reduced to below 70. Ammonia nitrogen levels of 450 mg/L must be lowered to below 15, and TP levels of 20 mg/L need to be reduced to 0.5 mg/L. We are looking for effective treatment methods; thank you all
Personally, I think it’s better to use the biochemical sludge method for treatment, especially the anaerobic approach, as methanol is an organic substance that is easily degradable and has good biodegradability. Moreover, the pre-existing oxygen-deficient condition enhances the degradation of COD. In many systems, a certain amount of methanol is added at the initial stage of the biochemical sludge process in order to cultivate and condition the microbial community.