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

Inactive Publication Date: 2006-01-25
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 homo

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[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...

Example Embodiment

[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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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 with chemistry [0002] technology field. (2) Background technology [0003] 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 indus...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56
Inventor 高宝玉王燕岳钦艳
Owner SHANDONG UNIV
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