PDMDAAC homopolymer inorganic and organic composite flocculant and preparation process thereof

A technology of dimethyl diallyl ammonium chloride and composite flocculant, which is applied in the chemical field to achieve good flocculation effect, good product stability and wide dosage range

Inactive Publication Date: 2005-03-16
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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Method used

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Examples

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Effect test

Embodiment 1

[0018] Take a certain amount of AlCl 3 ·6H 2 O solid was made into a solution, and Na was added under stirring 2 CO 3 Powder to predetermined alkalization degree 38%, prepares the effective concentration of PAC (with Al 2 o 3 Calculated) is 10.75%. According to the weight ratio of 19:1, PAC and PDMDAAC were respectively taken to prepare PAC-PDMDAAC inorganic-organic composite flocculant. The product is represented by No.1 and listed in Table 1. The preparation method is as follows:

[0019] (1) Take 70.0g AlCl 3 ·6H 2 O solid in a beaker, add 100ml of distilled water, add Na under stirring 2 CO 3 Powder to predetermined alkalization degree 38%, react at normal temperature, add 20ml distilled water in the reaction process and stir to obtain a colorless and transparent liquid, then evaporate at 50 ℃ until there is crystallization, use the PAC product analysis and determination method to measure the specific concentration of PAC and Alkalinity. This step produces Al ...

Embodiment 2

[0024] Take a certain amount of AlCl3 ·6H 2 O solid was made into a solution, and Na was added under stirring 2 CO 3 Powder to predetermined alkalization degree 35%, prepares the effective concentration of PAC (with Al 2 o 3 Calculated) is 10.17%. According to the weight ratio of 9:1, PAC and PDMDAAC were respectively taken to prepare PAC-PDMDAAC inorganic-organic composite flocculant. The prepared product is represented by No.2 and listed in Table 1.

[0025] The preparation method is as in Example 1, but the difference is: take AlCl 3 ·6H 2 O solid 68g prepares PAC, PAC effective concentration (with Al 2 o 3 Meter) is 10.17% by weight. The dimethyl diallyl ammonium chloride (DMDAAC) that gets 56g is placed in the 150ml three-neck round-bottomed flask, is diluted to concentration with distilled water and is 56% weight percent, logical 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...

Embodiment 3

[0028] Take a certain amount of AlCl 3 ·6H 2 O solid was made into a solution, and Na was added under stirring 2 CO 3 Powder to predetermined degree of alkalization 45%, prepares the effective concentration of PAC (with Al 2 o 3 Calculated) is 10.19%. Take a certain amount of PAC and PDMDAAC products respectively, and the mass ratio is 17:1 to prepare PAC-PDMDAAC inorganic-organic composite flocculant. The prepared product is represented by No.3 and listed in Table 1. The preparation method is as in Example 1, but the difference is that AlCl 3 ·6H 2 O solid 69g, prepare the effective concentration of PAC (with Al 2 o 3 Calculate) is 10.19%, when preparing PAC-PDMDAAC, get the PAC of 94g and the PDMDAAC of 6g.

[0029] PAC-PDMDAAC inorganic-organic composite flocculant, the appearance is light yellow liquid, containing Al 2 o 3 9.62% by weight, containing 5.56% by weight of PDMDAAC (40.6% solid content), density (20°C) 1.15, alkalinity 45%, pH 3.1.

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Abstract

The invention discloses a PDMDAAC homopolymer inorganic and organic composite flocculant and preparation process thereof, wherein AlCl#-[3] * 6H#-[2]O, PDMDAAC are used as raw materials, and is introduced into the PAC solution. The flocculating agent has strong adsorption and bridging capacity for colloidal matter.

Description

(1) Technical field [0001] The invention relates to a polyaluminum-dimethyldiallylammonium chloride homopolymer inorganic-organic composite flocculant (PAC-PDMDAAC) and a preparation process thereof, belonging to the field of chemical technology. (2) Background technology [0002] With the rapid development of industry and agriculture, the population has increased rapidly, and the water resources that human beings rely on for survival have become increasingly scarce. The problem of water resources crisis has increasingly become an important factor restricting my country's economic development. At present, my country's water resources are subject to varying degrees of pollution, and there is a growing trend. In order to save water resources, improve water utilization, reduce environmental pollution caused by wastewater, and maintain sustainable economic and social development in our country, it is necessary to strengthen the treatment of industrial wastewater and domestic se...

Claims

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Application Information

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