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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, and achieves the effects of low water treatment cost, high molecular weight and wide application range

Inactive Publication Date: 2007-11-14
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after searching: with FeCl 3 ·6H 2 O. The research and application of PFC-PDMDAAC inorganic-organic composite flocculant prepared with PDMDAAC homopolymer as the main raw material has not been reported in the literature at present.
In the foreign literature database, there is no relevant literature report

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] FeCl 3 ·6H 2 O solid was made into a solution, and Na was added under stirring 2 CO 3 Powdered to a predetermined alkalization degree of 16%, the 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 respectively taken to prepare PFC-PDMDAAC inorganic-organic composite flocculant. The product is represented by No.1 and listed in Table 1. The specific preparation method is as follows:

[0030](1) Take 49.0g FeCl 3 ·6H 2 O solid in a beaker, add 100ml of distilled water, add Na under stirring 2 CO 3 powder to a predetermined degree of alkalinity of 16%, stirring and reacting at room temperature to obtain a brown liquid, while adding 5.0 grams of Na 2 HPO 4 as a stabilizer. This step produced a PFC with a Fe content of 6.8% by weight.

[0031] (2) get 56g of DMDAAC and place it in a 150ml three-neck round-bottomed flask, add distilled water and dilute to a concentration of 56% (pe...

Embodiment 2

[0035] Take a certain amount of FeCl 3 ·6H 2 O solid was made into a solution, and Na was added under stirring 2 CO 3 Powder to a predetermined alkalization degree of 33%, the effective concentration (calculated as Fe) of PFC prepared is 7.45%. According to the weight ratio of 35:1, PFC and PDMDAAC were respectively taken to prepare PFC-PDMDAAC inorganic-organic composite flocculant. The prepared product is represented by No.2 and listed in Table 1.

[0036] Preparation method is as embodiment 1, but difference is: take FeCl 3 ·6H 2 O solid 56g prepares PFC, adds Na 2 CO 4 Powder to the 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.

[0037] The above-mentioned PFC-PDMDAAC inorganic-organic composite flocculant has an appearance of brown l...

Embodiment 3

[0039] Take a certain amount of FeCl 3 ·6H 2 O solid was made into a solution, and Na was added under stirring 2 CO 3 Powder to a predetermined alkalinity of 40%, the effective concentration of PFC (calculated as Fe) is 7.45%. According to the weight ratio of 13:1, PFC and PDMDAAC were respectively taken to prepare PFC-PDMDAAC inorganic-organic composite flocculant. The prepared product is represented by No.3 and listed in Table 1.

[0040] The preparation method is as in Example 1, but the difference is: the dimethyl diallyl ammonium chloride (DMDAAC) of getting 55g is placed in a 150ml three-neck round-bottomed flask, and distilled water is diluted to a concentration of 55% by weight. N 2 After half an hour, 4% by weight of the initiator ammonium persulfate was added, placed in a constant temperature water bath at 42°C, and the polymerization was stopped after stirring for 6 hours. Take 91g of PFC and 7g of PDMDAAC and mix them at 35°C to prepare PFC-PDMDAAC inorganic-o...

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Abstract

A composite flocculant in the form of brown liquid is a homo-polymer poly-iron-dimethyl dially ammonium chloride consisting of iron (5.5-8.0 Wt%) and poly-dimethyldially ammonium chloride (3-16 Wt%). Its preparing process featuring the addition of PDMDAAC to PFC solution is also disclosed. Its advantages are high flocculating effect and stability and low cost.

Description

(1) Technical field [0001] The invention relates to a composite flocculant and its preparation process, in particular to a polymeric iron-dimethyl diallyl ammonium chloride homopolymer inorganic-organic composite flocculant (PFC-PDMDAAC) and its preparation process, belonging to the environment and chemical technology fields. (2) Background technology [0002] In today's environmental protection technology field, water treatment chemicals are the most widely used and most used special products in the current water industry, water pollution control and water-saving reuse purification engineering technology fields. Water treatment chemicals are high-tech and high value-added products, which largely determine the innovative development of water treatment technology and equipment, simplification of facilities and process flow, operating costs and water purification quality. Therefore, new and high-efficiency water treatment chemicals have always been the pillar industry for key...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/56
Inventor 高宝玉王燕岳钦艳
Owner SHANDONG UNIV
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