Has anyone had practical experience using dyeing and printing wastewater in anaerobic reactors?
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This post was last edited by yc125 on 2010-5-31 22:12. Has anyone used anaerobic reactors for printing and dyeing wastewater treatment? What were the results? I have existing printing and dyeing wastewater, and I would like to separate it by quality. The wastewater from desizing, cooking, and bleaching processes should be pre-treated before being fed into an anaerobic reactor. The sizing agent used for desizing is modified starch. The water quality parameters are as follows: COD 11025, SS 9070, TDS 17000, SO42- 223, and color intensity 1600. Please share your suggestions.
Reply 1# petsky: Printing and dyeing organic wastewater is worth exploring. If there are no anaerobic inhibitors or the concentration of such inhibitors is within an adjustable range, it is recommended to use an IC reactor operated in a granular sludge state. It is best if it can meet high-temperature or medium-temperature conditions.
Reply to 2# wwzing: There are no inhibitory substances; the fabric being woven is made from starch-based sizing, so it has good biodegradability. The levels of ammonia nitrogen and sulfate are also low, with the main issue being a slightly high pH value.
Reply to 3# petsky: What is the specific pH value? I think this type of wastewater should be treatable using IC reactors. Just conduct experiments on the pretreatment process.
Reply to 4# wwzing: It seems that precipitation is still necessary; with a pH of around 12, it’s best to neutralize and precipitate the substance first before proceeding
The EGSB process has been selected, and all simulation data show good results. Hehe, thank you all
Reply to 6# petsky: EGSB operates in a forced-circulation mode, in which it is difficult to maintain the sludge pellet state; furthermore, energy consumption and equipment maintenance lead to increased operating costs. Why not choose IC, which is more efficient, has lower operating costs, and produces less sediment in the effluent? The poster should choose an anaerobic process based on IC, while further optimizing the process parameters.