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Slow-release oxygen cationic crosslinking agent and preparation method thereof

A cationic cross-linking agent, slow-release oxygen technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc. Low and other problems, to achieve the effects of small damage, low oxygen release rate, and high oxygen utilization rate

Active Publication Date: 2022-08-02
TAIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of the existing slow-release composite oxygen-releasing agents, such as fast oxygen release speed, low oxygen utilization rate, and secondary pollution of additives, the present invention provides a slow-release oxygen cationic crosslinking agent and a preparation method thereof, using calcium peroxide or magnesium peroxide As an oxygen release source, alginate is used as a coating agent, and bentonite is used as an additive. Compared with the existing slow-release oxygen agents, it has the characteristics of lower oxygen release rate, higher oxygen utilization rate, and less environmental pollution from additives.

Method used

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  • Slow-release oxygen cationic crosslinking agent and preparation method thereof
  • Slow-release oxygen cationic crosslinking agent and preparation method thereof
  • Slow-release oxygen cationic crosslinking agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The slow-release oxygen cationic cross-linking agent of the present embodiment, its raw materials include in parts by mass:

[0034] calcium peroxide 50;

[0035] Sodium alginate 1000;

[0036] Bentonite 1042;

[0037] Metal chloride salt 5;

[0038] Metal Chloride as CaCl 2 .

[0039] The specific preparation method includes the following steps:

[0040] Step 1, prepare sodium alginate solution: Weigh 1g of sodium alginate and dissolve it in 50mL of distilled water, slowly heat until dissolved, and let it cool to room temperature for use;

[0041] Step 2, feeding: first, add 50 mg, 200 mesh of calcium peroxide to the sodium alginate solution prepared in step 1 to obtain a solution to be mixed, and then add bentonite in an amount of 2% according to the mass percentage of the solution to be mixed, and the strong After stirring evenly, a mixed solution is prepared;

[0042] Step 3, make the initial product: adopt the peristaltic pump to drip the mixed solution obta...

Embodiment 2

[0045] Slow-release oxygen cationic cross-linking agent, its raw materials include:

[0046] calcium peroxide 50;

[0047] Sodium alginate 1000;

[0048] Bentonite 1042;

[0049] Metal chloride salt 5;

[0050] Metal chloride salt as CuCl 2 .

[0051] Compared with the preparation method in Example 1, the preparation method of this example is made of CaCl in step 3. 2 The solution was replaced with CuCl 2 solution, other parameters remain unchanged.

Embodiment 3

[0053] Slow-release oxygen cationic cross-linking agent, its raw materials include:

[0054] calcium peroxide 50

[0055] Sodium alginate 1000

[0056] Bentonite 1042

[0057] Metal chloride salts 1-5

[0058] Wherein, the metal chloride salt is ZnCl 2 and CuCl 2 .

[0059] Compared with the preparation method in Example 1, the preparation method of this example is made of CaCl in step 3. 2 The solution was replaced with ZnCl 2 and CuCl 2 Mixed solutions, other parameters unchanged.

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Abstract

The invention relates to a slow-release oxygen cationic crosslinking agent and a preparation method thereof, belonging to the field of slow-release type compound oxygen-releasing agent and preparation thereof, and aiming at the existing slow-release type compound oxygen-releasing agent with fast oxygen release speed, low oxygen utilization rate, and two additives. For the problem of secondary pollution, the technical scheme is as follows: slow-release oxygen cationic cross-linking agent, and its raw materials include by mass fractions: calcium peroxide / magnesium peroxide 40-50, alginate 500-1500, bentonite 5.45-22, metal peroxide Chloride salt 1‑5, metal chloride salt is Ca 2+ , Cu 2+ , Zn 2+ , Fe 3+ , Al 3+ The preparation method of the slow-release oxygen cationic cross-linking agent includes: preparing a sodium alginate solution, adding calcium peroxide / magnesium peroxide and bentonite, and dropping them into a metal chloride salt solution to prepare a slow-release oxygen cation cross-linking agent. Linking agent; slow-release oxygen cationic cross-linking agent has lower oxygen release rate, higher oxygen utilization rate, and less damage to the environment.

Description

technical field [0001] The invention belongs to the field of slow-release type composite oxygen-releasing agent and preparation thereof, and particularly relates to a slow-release oxygen cationic crosslinking agent and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of my country's urban economy, the scale of cities has been expanding, and the construction of urban sewage interception pipeline networks and sewage treatment facilities has been lagging behind. The concentration of pollutants such as oxygen (BOD), nitrogen (N) and phosphorus (P) exceeds the standard, the river is seriously polluted, and the water body appears seasonal or year-round black odor. Urban black and odorous water bodies have brought a very poor sensory experience to the masses, and have become a relatively prominent water environment problem, which seriously affects the good development of cities in my country. Therefore, it is urgent to find a b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/68
CPCC02F1/683
Inventor 刘文莉张崇邦丁国良刘虹郑莹莹
Owner TAIZHOU UNIV
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