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Preparation method of nitrided compound acidic wastewater treatment agent and prepared treatment agent

A technology of acid wastewater and treatment agent, which is applied in water/sewage treatment, chemical instruments and methods, neutralization water/sewage treatment, etc., can solve the problems of high cost and transfer of treatment agent pollution, and achieve low preparation cost and obvious effect Effect

Pending Publication Date: 2021-11-19
宿州学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by this invention is how the treatment agent in the prior art is easy to make pollution transfer, and the cost is expensive, and can only be used once, and a kind of preparation method of acid waste water treatment agent and the prepared acid waste water treatment agent are provided

Method used

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  • Preparation method of nitrided compound acidic wastewater treatment agent and prepared treatment agent
  • Preparation method of nitrided compound acidic wastewater treatment agent and prepared treatment agent
  • Preparation method of nitrided compound acidic wastewater treatment agent and prepared treatment agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation method of nitriding compound acidic wastewater treatment agent comprises the following steps:

[0037] (1) Weigh 3.00g of borax and 6g of melamine respectively, and the ratio of the substances is 1:2. Place in a 100ml beaker, add 50ml of water, and place in a magnetic stirrer at 75°C until completely dissolved. The above solution was transferred to the reactor while hot, and kept at 100° C. for 5 h. After the reaction was completed and cooled to room temperature, the precipitated crystals were suction filtered, washed, and dried to obtain intermediate product A.

[0038] (2) The prepared intermediate product A was calcined at 600°C for 2 h under anaerobic conditions, removed from the crucible and ground to obtain powdered sample B.

[0039] (3) Preparation of precursor sol C: Dissolve 2 grams of powdery sample B in 50ml of pure water, then add 2 grams of chitosan, and stir continuously under the condition of heating at 100°C until a sol-like liquid is ...

Embodiment 2

[0043] The preparation method of nitriding compound acidic wastewater treatment agent comprises the following steps:

[0044] (1) Weigh 3.00g of boric acid and 6g of ammonium bicarbonate respectively, and the ratio of the substances is 1:2. Place in a 100ml beaker, add 60ml of water, and place in a magnetic stirrer at 90°C until completely dissolved. The above solution was transferred to the reactor while hot, and kept at 90° C. for 5 h. After the reaction was finished, after cooling to room temperature, the precipitated crystals were suction filtered, washed, and dried to obtain intermediate product A.

[0045] (2) The prepared intermediate product A was calcined at 800°C for 3 h under anaerobic conditions, removed from the crucible and ground to obtain powdered sample B.

[0046] (3) Preparation of precursor sol C: Dissolve 2 grams of powdery sample B in 50ml of pure water, then add 2 grams of polyvinyl alcohol, and stir continuously under the condition of heating at 95°C ...

Embodiment 3

[0050] The preparation method of nitriding compound acidic wastewater treatment agent comprises the following steps:

[0051] (1) Weigh 3.00g of boric acid and 6g of urea respectively, and the ratio of the substances is 1:2. Place in a 100ml beaker, add 70ml of water, and place in a magnetic stirrer at 100°C until completely dissolved. The above solution was transferred to the reactor while hot, and kept at 100° C. for 5 h. After the reaction was completed and cooled to room temperature, the precipitated crystals were suction filtered, washed, and dried to obtain intermediate product A.

[0052] (2) The prepared intermediate product A was calcined at 700 ° C for 2 h under anaerobic conditions, removed from the crucible and ground to obtain powdered sample B.

[0053] (3) Preparation of precursor sol C: Dissolve 2 grams of powdered sample B in 50ml of pure water, then add 2 grams of peach gum, and stir continuously under the condition of heating at 105°C until a sol-like liqu...

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Abstract

The invention discloses a preparation method of a nitrided compound acidic wastewater treating agent, and relates to the technical field of acidic wastewater treatment. The preparation method comprises the following steps: 1, stirring and dissolving borax, a nitrogen source and water, carrying out a hydrothermal reaction at a temperature of 90-100 DEG C, and carrying out suction filtration, washing and dryingon the precipitated crystals to obtain an intermediate product; (2) calcining the intermediate product for 2-3 hours at 600-800 DEG C under an anaerobic condition, and grinding; (3) dissolving in pure water, adding chitosan, polyvinyl alcohol or peach gum, heating and stirring to form precursor sol; (4) cleaning a carbon material in acid liquor until the carbon material is neutral, putting the carbon material into the precursor sol, performing ultrasonic treatment, coating a carrier with the carbon material, and performing vacuum drying to obtain a film-shaped sample; and (5) calcining for 1-2 hours at 550-850 DEG C under an anaerobic condition. The method has the beneficial effects that polybasic acid wastewater can be treated, the pH value of the wastewater can be improved to be neutral, the wastewater can be recycled, and an auxiliary agent or energy support is not needed in the use process.

Description

technical field [0001] The invention relates to the technical field of acid wastewater treatment, in particular to a preparation method of a nitriding compound acid wastewater treatment agent and the prepared treatment agent. Background technique [0002] The rapid economic development will undoubtedly encounter environmental problems, especially water pollution. There are many types of polluted waste water, usually divided into organic waste water, inorganic waste water, heavy metal waste water, radioactive waste water, heated waste water and so on. Sometimes it can also be named according to the main pollutants in the wastewater, such as wastewater containing phenol, wastewater containing acrylonitrile, acid wastewater, wastewater containing chromium, etc. Acidic wastewater is the mother of all kinds of wastewater and the carrier of waste liquid. There are various methods to treat acidic wastewater. It can be neutralized, and the secondary water that can be oxidized and r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/66C02F1/00
CPCC02F1/66C02F1/00
Inventor 谢永张德谨朱岩岩
Owner 宿州学院
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