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Solid reagent bag for removing organic matters in wastewater, and application thereof

A technology of solid reagents and organic matter, applied in water pollutants, water/sewage treatment, special compound water treatment, etc., can solve problems such as easy decomposition, slow recovery rate of ferrous iron, and corrosiveness

Active Publication Date: 2021-09-10
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the practical application of advanced oxidation technology, the present invention provides a solid reagent package composed of crystal boron, ferric chloride hexahydrate and potassium hydrogen peroxymonosulfate mixed in proportion. Crystal boron solves the problem of slow recovery rate of ferrous iron, replaces ferrous iron with more stable ferric iron, and replaces hydrogen peroxide with monomonosulfate, avoiding the problem of easy decomposition and corrosion during transportation It can completely mineralize organic pollutants and form harmless products. It is effective and easy to use in the water purification work used to treat wastewater containing emerging micro-pollutants. It plays a role in timely control and effectively degrades pollutants in sewage emergency treatment. the role of

Method used

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  • Solid reagent bag for removing organic matters in wastewater, and application thereof
  • Solid reagent bag for removing organic matters in wastewater, and application thereof
  • Solid reagent bag for removing organic matters in wastewater, and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Fe Ⅲ Comparison experiment of the removal effect of four simulated pollutants by / PMS system:

[0029] 1) Take 250ml of FMME (flunixin meglumine) containing 5.92mg / L, 3.6mg / L of ASA (aspirin), 2.4mg / L of NB (nitrobenzene) and 2.4mg / L of BA (benzene Formic acid) solution in the brown reaction bottle, using 9.8g / L of H 2 SO 4 and 0.4g / L NaOH solution to adjust the pH value to 4.0, and the glass bottle was placed in a constant temperature shaker in a water bath to maintain a constant temperature of 25°C.

[0030] 2) Weigh the catalyst iron trichloride hexahydrate and 0.038g potassium hydrogen peroxymonosulfate with a preset mass of 0.034g, mix them evenly, and put them into a sealed bag to make a solid reagent for storage.

[0031]3) Add the solid reagent prepared in step 2) to the four brown reaction bottles in step 1), start the water bath constant temperature oscillator, and shake at a speed of 180rpm / min to fully react with the pollutants.

[0032] 4) Start timing ...

Embodiment 2

[0036] Fe Ⅲ Comparison experiment of the removal effect of four simulated pollutants after introducing crystalline boron into the / PMS system:

[0037] Embodiment 2 is the same as the experiment process of Embodiment 1, except that in step 2), the crystalline boron of 0.025g and 0.034g of ferric chloride hexahydrate and 0.038g of peroxymonohydrogensulfate are also taken in step 2). Potassium blends made into new solid reagent packs.

[0038] The experimental results measured as figure 1 Shown, C-B / Fe Ⅲ The 20min removal rate of FMME / PMS system was 93.8%, 72.3% of ASA, 77.1% of BA, and 38.4% of NB. Compared with the result of Example 1, it can be known that C-B / Fe Ⅲ The removal rate of the four pollutants by the / PMS system was significantly higher than that of Fe Ⅲ / PMS system, so in Fe Ⅲ The introduction of crystalline boron into the / PMS system can efficiently promote the circulation of Fe, and improve the removal effect of pollutants by accelerating the generation rat...

Embodiment 3

[0040] Embodiment 3 is the same as the experimental process of embodiment 1, and the difference is that the dosage of boron is used as an independent variable to explore the C-B / Fe Ⅲ / PMS system to remove the effect of target pollutants, wherein the dosage of boron in step 2) is 0, 12.5, 25.0, 37.5, 50.0mg respectively.

[0041] In the five cases with different dosages of crystalline boron, C-B / Fe Ⅲ The relationship between the efficiency of the / PMS system to remove target pollutants and time is as follows: figure 2 It can be seen from the figure that the removal rate of the four pollutants FMME, ASA, NB, and BA increases first and then decreases with the increase of boron dosage, and the dosage is 150mg / Its 20min removal rate is the highest when L is 96.8%, 74.1%, 42.8%, 80.5% respectively, and the 20min removal rate of four pollutants is 93.8%, 72.3%, 38.4%, 77.1% when the amount of boron is 100mg / L %, considering the economy of boron and the toxicity of excess boron, s...

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Abstract

The invention discloses a solid reagent bag for removing organic matters in wastewater, and application thereof. The solid reagent bag for removing the organic matters in the wastewater has high efficiency and convenience. The solid reagent bag comprises crystal boron, ferric trichloride hexahydrate and peroxymonosulfate, and has a good pollutant removal effect. The solid reagent bag provided by the invention overcomes the defects of low conversion rate, slow active oxygen component generation rate, small pH application range and the like of reduction of Fe III into Fe II in a ferric iron activated peroxymonosulfate system, and has the characteristic of high organic pollutant removal efficiency in a wide pH range (4.0-10.0); and the three medicaments are sealed and stored in a solid form, so the solid reagent bag is convenient to transport and use, and is suitable for on-site emergency rapid treatment of water pollution.

Description

technical field [0001] The invention relates to a solid reagent pack technology for removing organic matter in waste water, belonging to the technical field of water pollution control. Background technique [0002] The world is facing the problem of water shortage, and the large amount of waste water produced has brought about a deteriorating water environment pollution crisis. Therefore, the restoration of water environment pollution is the top priority of the current task. The pollution of freshwater resources is closely related to tens of thousands of synthetic or natural compounds. With the widespread use of industrial chemicals, personal care products, pharmaceuticals, and pesticides, traditional pollutants and emerging micropollutants produced by human activities are becoming more and more serious. The more it enters the water body, the concentration of emerging pollutants is low, but it has considerable toxicity and persistence. If the organic pollutants in surface wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F101/30
CPCC02F1/725C02F1/722C02F2101/30C02F2305/023C02F2305/026
Inventor 谈超群沈莹李鹏赵恒王宣程雪剑徐添慧
Owner SOUTHEAST UNIV
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