Heavy metal sewage multifunctional processing agent and synthesis method thereof
A multi-functional, heavy metal technology, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of increasing equipment and input costs, difficulty in rapid settlement, etc., to achieve molecular weight Large, multiple sites, high efficiency effect
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Embodiment 1
[0039] step 1):
[0040] In the there-necked flask with magnetic stirring, add 0.05 mol of cyanuric chloride ethanol solution, cool to 0-5 ° C, then add 0.15 mol pentaethylene hexamine, the reaction temperature is slowly warming up to 80-100 ° C in stages, Slowly increase the temperature in stages: 0-5°C for 30min-5h, 30-50°C for 30min-5h, 80-100°C for 30min-5h. During the reaction process, use 5-10% alkali solution to adjust the pH at 8-11, and the reaction time is 4-6 hours; the above-mentioned reaction system is cooled to 0-10°C, and then 1.05mol of epichlorohydrin is added within this temperature range, During the reaction process, use 5-10% alkali solution to adjust the pH to 8-11. After the epichlorohydrin is added dropwise, stir at room temperature for 2-4 hours;
[0041] Step (2):
[0042] Dissolve the reaction product synthesized in step (1) in water, slowly add dropwise the mixture of 0.9 mol pentaethylene hexamine and 0.15 mol triethylamine, the oil bath temperatu...
Embodiment 2
[0047] step 1):
[0048] Add 1.2mol ethanol-water solution of epichlorohydrin to a three-necked flask with magnetic stirring, then slowly add 0.15 mol pentaethylenehexamine dropwise, the reaction temperature rises slowly to 80-110°C, and slowly rises to 0-5°C C reaction 30min-5h, 30-50°C, reaction 30min-5h, 80-100°C, reaction 30min-5h. During the reaction process, use 5-10% alkali solution to adjust the pH at 8-11, and the reaction time is 4-6 hours;
[0049] Step (2):
[0050] Dissolve the reaction product synthesized in step (1) in water, slowly add dropwise the aqueous solution mixture of 0.95 mol hexaethyleneheptamine, 0.05 mol triethylamine, and 0.1 mol mercaptoethylamine, and the temperature of the oil bath during the dropwise addition is 80-110° C. During the reaction process, use 5-10% alkali solution to adjust the pH to 8-11. After the dropwise addition, maintain the reaction temperature at this temperature for 4 hours, cool down and purify to obtain a hyperbranched...
Embodiment 3
[0055] step 1):
[0056] Add 1.2mol ethanol-water solution of epichlorohydrin to a three-necked flask with magnetic stirring, then slowly add 0.15 mol pentaethylenehexamine dropwise, the reaction temperature rises slowly to 80-110°C, and slowly rises to 0-5°C C reaction 30min-5h, 30-50°C, reaction 30min-5h, 80-110°C, reaction 30min-5h. During the reaction process, use 5-10% alkali solution to adjust the pH at 8-11, and the reaction time is 4-6 hours;
[0057] Step (2):
[0058] Dissolve the reaction product synthesized in step (1) in water, slowly add dropwise the aqueous solution mixture of 0.95 mol pentaethylenehexamine and 0.1 mol triethylamine, the temperature of the oil bath is 80-110°C during the dropping process, and use Adjust the pH to 8-11 with 5-10% alkaline solution, after the dropwise addition, maintain the reaction at this temperature for 4 hours, cool down and purify to obtain a hyperbranched cationic polymer.
[0059] Step (3):
[0060] Dissolve the reactio...
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