Flocculation agent of poly ferric-dimethyl diallyl ammonium chloride homopolymer inorganic organic composited and preparation process thereof
A technology of polydimethyldiallyl ammonium chloride and dimethyldiallyl ammonium chloride, which is applied in the field of environment and chemistry to achieve good flocculation effect, good product stability and wide dosage range
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[0029] Example 1:
[0030] FeCl 3 ·6H 2 O solid is prepared into a solution, and Na is added while stirring 2 CO 3 The powder reaches a predetermined alkalinity of 16%, and a PFC with an effective concentration (calculated as Fe) of 6.8% is prepared. According to the weight ratio of 14:1, PFC and PDMDAAC were taken respectively to prepare PFC-PDMDAAC inorganic-organic composite flocculant. The product is represented by No.1 and is listed in Table 1. The specific preparation method is as follows:
[0031] (1) Take 49.0g FeCl 3 ·6H 2 O solid in a beaker, add 100ml distilled water, add Na while stirring 2 CO 3 The powder reaches the predetermined alkalinity degree of 16%, stir and react at room temperature to obtain a brown liquid, and at the same time add 5.0 g of Na 2 HPO 4 As a stabilizer. In this step, a PFC with a Fe content of 6.8% by weight is prepared.
[0032] (2) Take 56g of DMDAAC in a 150ml three-necked round bottom flask, add distilled water to dilute to a concentration o...
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[0035] Example 2:
[0036] Take a certain amount of FeCl 3 ·6H 2 O solid is prepared into a solution, and Na is added while stirring 2 CO 3 The powder reaches a predetermined alkalinity degree of 33%, and the effective concentration (calculated as Fe) of the prepared PFC is 7.45%. According to the weight ratio of 35:1, PFC and PDMDAAC were taken to prepare the PFC-PDMDAAC inorganic-organic composite flocculant. The prepared product is represented by No. 2 and is listed in Table 1.
[0037] The preparation method is the same as in Example 1, but the difference is: take FeCl 3 ·6H 2 O solid 56g to prepare PFC, add Na 2 CO 3 Powder to a predetermined alkalinity of 33%, then add 5.9 grams of Na 2 HPO 4 As a stabilizer, the effective concentration of PFC (calculated as Fe) is 7.45% by weight. Take 98.0g of PFC and 2.8g of PDMDAAC and mix them at 30°C to prepare PFC-PDMDAAC inorganic-organic composite flocculant.
[0038] The above-mentioned PFC-PDMDAAC inorganic organic composite flocc...
Example Embodiment
[0039] Example 3:
[0040] Take a certain amount of FeCl 3 ·6H 2 O solid is prepared into a solution, and Na is added while stirring 2 CO 3 The powder reaches the predetermined alkalinity degree of 40%, and the effective concentration (calculated as Fe) of the prepared PFC is 7.45%. According to the weight ratio of 13:1, PFC and PDMDAAC were taken respectively to prepare PFC-PDMDAAC inorganic-organic composite flocculant. The prepared product is represented by No. 3 and is listed in Table 1.
[0041] The preparation method is the same as in Example 1, but the difference is: take 55g of dimethyldiallylammonium chloride (DMDAAC) in a 150ml three-neck round bottom flask, add distilled water to dilute to a concentration of 55% by weight, pass N 2 After half an hour, 4% by weight initiator ammonium persulfate was added, placed in a 42°C constant temperature water bath, and the polymerization was stopped after 6 hours of stirring. Take 91g of PFC and 7g of PDMDAAC and mix them at 35°C t...
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