Recycling dyeing process of polyester fabric printing and dyeing wastewater
A polyester fabric, printing and dyeing wastewater technology, applied in the direction of textile industry wastewater treatment, dyeing method, special compound water treatment, etc., can solve the problems of high cost of biochemical method, unsatisfactory CODcr removal rate, etc., achieve steam saving, increase dyeing production capacity and Efficiency, cost reduction effects
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[0031] 1. Preparation of wastewater treatment agent WFS088:
[0032] 1. Formula and dosage
[0033] Wastewater treatment agent WFS088 includes raw materials in the following weight percentages:
[0034]
[0035] 2. Preparation process:
[0036]Dilute sodium stearate with water first to prepare an aqueous solution with a mass concentration of 15%, then transfer the aqueous solution to a reaction kettle, add surfactants according to weight percentages, heat to 70°C, and then sequentially add cleaning agents according to weight percentages agent and borax, fully stirred and mixed, cooled to 40°C, and then added defoamer, diffusing agent MF, buffer and anti-coagulant in sequence according to the percentage by weight, after the foam was naturally eliminated, finally added water and fully stirred and mixed, that is, Wastewater treatment agent WFS088 was obtained;
[0037] 2. Preparation of Surfactant WFS099
[0038] 1. Formula and dosage
[0039] Surfactant WFS099 comprises ...
Embodiment 1
[0045] A kind of polyester fabric printing and dyeing wastewater circulation dyeing process, comprises the following process steps:
[0046] (1) First check the dyeing machine to ensure that the dyeing machine is operating normally, and prepare the required dyes and dyeing auxiliaries according to the process requirements;
[0047] (2) Then calculate the required amount of water according to the requirements of the process bath ratio = 1:9 and the weight of the dyed fabric (kg), and directly add the collected printing and dyeing wastewater into the dyeing machine at 60 °C without cooling down, and then put it into the dyeing machine. Run the polyester fabric to be dyed in the cylinder of the dyeing machine for 3 to 4 minutes, so that the polyester fabric is evenly soaked;
[0048] (3) Then add waste water treatment agent WFS088, surfactant WFS099 and dyeing auxiliaries to the printing and dyeing wastewater in the dyeing machine, measure the required dyes according to the type ...
Embodiment 2
[0055] A kind of polyester fabric printing and dyeing wastewater circulation dyeing process, comprises the following process steps:
[0056] (1) First check the dyeing machine to ensure that the dyeing machine is operating normally, and prepare the required dyes and dyeing auxiliaries according to the process requirements;
[0057] (2) Then calculate the required amount of water according to the requirements of the process bath ratio = 1:8 and the weight of the dyed fabric (kg), and directly add the collected printing and dyeing wastewater into the dyeing machine at 70 ° C without cooling down, and then enter the waiting room Dye the polyester fabric, make it run in the cylinder of the dyeing machine for 3 to 4 minutes, so that the polyester fabric is evenly soaked;
[0058] (3) Then add waste water treatment agent WFS088, surfactant WFS099 and dyeing auxiliaries to the printing and dyeing wastewater in the dyeing machine, measure the required dyes according to the type of fab...
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