High water content, high content of organic pollutants, high chroma, alkalinity and pH change, water quality changes. The biodegradability of wastewater is poor, and the ratio of B/C is about 0.2. The PVA slurry and the new auxiliary wastewater were used, and the content of organic matter was high. High content of cellulose, acid, wax, oil, surfactant and nitrogen compounds.
 

   Different pretreatment processes were used for the printing and dyeing wastewater produced by different processes, and the main components of the desizing waste gas were removed, such as the size of the impurities (the size of the decomposition, the fiber, etc.), and the PH was adjusted to improve the biodegradability. The scouring wastewater mainly removes wax, grease and heat transfer. Bleaching effluent can be used as dilution water to mix. Mercerizationwastewater adjustable PH or alkali recovery. Dyeing wastewater can be regulated by PH and increased biodegradability. Printing wastewater needs to increase biodegradability and reduce toxicity. Alkali waste water first adjust PH, benzene two formic acid will be precipitated, and then mixed into other boiling water for physical and biochemical treatment. In the design, we should consider the wave momentum. Our company will be based on the actual situation of the owners of the corresponding process design.