Decolorization flocculating agent for printing and dyeing waste water
A decolorizing flocculant, a technology for printing and dyeing wastewater, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of high wastewater treatment cost, large system maintenance workload, high price, etc., to reduce the preparation cost, improve the decolorization effect, Excellent synergistic effect
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Embodiment 1
[0012] Add 80kg of dicyandiamide, 20kg of urea, and 210kg of formaldehyde into the enamel reaction kettle with a reflux condensing device and a heating jacket, start stirring, and heat water into the jacket of the reaction kettle. The water temperature is set at 45°C, and 20 kg of Ammonium chloride, after a few minutes, the temperature in the reactor rises rapidly, and then slowly drops, when the temperature drops below 60°C, add 18kg of ammonium chloride, continue to react for 1 hour, and then jacket the reactor The water temperature was set at 85°C, reacted for 2 hours, then the temperature was lowered to 50°C, and 652kg of newly prepared liquid polyaluminum chloride (Al 2 o 3 %=12), reacted for 0.5 hours, and aged at room temperature for 24 hours to obtain a viscous light yellow transparent liquid.
Embodiment 2~5
[0014] The formula of table 2 embodiment 2~5
[0015]
[0016] The preparation method of Examples 2-5 is the same as that of Example 1.
Embodiment 4
[0023] Table 3 Example 4 Application of decolorizing flocculant
[0024] experiment
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