A kind of solid reagent package and application thereof for removing organic matter in waste water

A technology for solid reagents and organic substances, applied in the field of solid reagent packs, can solve the problems of easy decomposition, slow recovery rate of ferrous iron, and corrosiveness, and achieves the effects of strong selectivity, safety, easy handling, and burden reduction.

Active Publication Date: 2022-04-08
SOUTHEAST UNIV
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  • 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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  • A kind of solid reagent package and application thereof for removing organic matter in waste water
  • A kind of solid reagent package and application thereof for removing organic matter in waste water
  • A kind of solid reagent package and application thereof for removing organic matter in waste water

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 identical with embodiment 1 experimental process, and difference is that in step 2) also took the crystalline boron that preset quality is 0.025g and ferric chloride hexahydrate of 0.034g and 0.038g hydrogen peroxymonosulfate 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 gener...

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 rates of the four pollutants, FMME, ASA, NB, and BA, increase first and then decrease with the increase in 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, ...

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Abstract

The invention discloses a solid reagent pack for removing organic matter in waste water and an application thereof. The use of the solid reagent pack for removing organic matter in waste water has both high efficiency and convenience. The components of the solid reagent package include crystal boron, ferric trichloride hexahydrate, and permonomonosulfate, and have a good effect on removing pollutants. The solid reagent package provided by the invention has improved Fe in ferric iron activated monomonosulfate system. Ⅲ reduced to Fe Ⅱ It has the disadvantages of low conversion rate, slow generation rate of active oxygen components, and small pH application range. It has the characteristics of high removal efficiency of organic pollutants in a wide pH range (pH 4.0~10.0), and the three agents are sealed in solid form. It is convenient for storage, transportation and use, and is suitable for on-site emergency and 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 Patents(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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