Sludge dewatering agent and its preparation method
A sludge dewatering agent and dewatering agent technology, which can be used in dewatering/drying/concentrating sludge treatment, etc., can solve problems such as secondary pollution of the environment, and achieve the effects of simple equipment, stable reaction process and good agglomeration.
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[0023] Example 1
[0024] In the reactor, add 499 kg of fresh water, start stirring, and add 1.1 kg of non-ionic polyacrylamide. After it is completely dissolved, add 0.1 kg of sodium hydroxide (chemically pure) to adjust the pH of the solution to 11-12. Then add 0.5g disodium ethylenediaminetetraacetic acid (chemically pure), add 0.8g ammonium persulfate (chemically pure), control the reaction temperature at 30℃, add 1000mL formaldehyde (chemically pure) and 1500mL diethylamine (chemically pure) After mixing, add to the reaction kettle, the reaction time is 4h. Finally, add 1500mL hydrochloric acid (chemically pure) to stop the reaction, and this product can be obtained. Dehydrating agent-1.
Example Embodiment
[0025] Example 2
[0026] In the reactor, add 498 kg of fresh water, start stirring, and add 1.35 kg of non-ionic polyacrylamide. After it is completely dissolved, add 0.17 kg of sodium hydroxide (chemically pure) to adjust the pH of the solution to 9-10. Then add 0.5g disodium ethylenediaminetetraacetic acid (chemically pure), add 1.4g N,N-dihydroxyethyl azobisisobutamidine hydrochloride (chemically pure), control the reaction temperature at 50 ℃, and add 2200 mL of formaldehyde (Chemically pure), 1800mL of dimethylamine (chemically pure), and 1200mL of diethylamine (chemically pure) are mixed and added to the reaction kettle for a reaction time of 3h. Finally, add 2500mL hydrochloric acid (chemically pure) to stop the reaction, and this product can be obtained. Dehydrating agent-2.
Example Embodiment
[0027] Example 3
[0028] In the reactor, add 987 kg of fresh water, start stirring, and add 2.85 kg of anionic polyacrylamide. After it is completely dissolved, add 0.25 kg of sodium hydroxide (chemically pure) to adjust the pH of the solution to 11-12. Then add 0.4g disodium edetate (chemically pure), add 0.5g ammonium persulfate (chemically pure), add 0.6g N,N-dihydroxyethyl azobisisobutamidine hydrochloride (chemically pure) , Control the reaction temperature at 45°C, mix 2500 mL of formaldehyde (chemically pure) and 4200 mL of diethylamine (chemically pure), and add them to the reactor. The reaction time is 3h. Finally, add 4000mL hydrochloric acid (chemically pure) to stop the reaction, and this product can be obtained. Dehydrating agent-3.
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