The sedimentation effect of printing and dyeing wastewater is poor
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I handle textile printing and dyeing wastewater here, using biochemical plus physicochemical treatment methods. In the physicochemical treatment, decolorizing agents, polyaluminum, and polypropylene are used. However, the sludge produced has poor sedimentation properties – it’s very light – which means that the entire sedimentation tank gets filled with sludge again within just two hours. Experts, could you tell me why this happens?
Try adding some PAM:)