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A process for advanced treatment of artificial sweetener sewage based on UV advanced oxidation

An artificial sweetener and advanced oxidation technology, which is applied in the fields of oxidized water/sewage treatment, natural water treatment, water treatment parameter control, etc. Negative growth of sucralose and other problems to achieve the effect of solving biodegradation

Active Publication Date: 2021-09-28
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for now, only a small number of literatures have reported the removal effects of traditional physical and chemical processes such as coagulation, adsorption, and ultraviolet on ASs.
In addition, the current process research is mostly aimed at a single ASs, there is no systematic investigation of the removal performance of various typical ASs in sewage treatment processes, and there is a lack of performance comparison between different processes; and, acesulfame potassium and sodium saccharin in ASs Both cyclamate and cyclamate have a sulfonamide structure, which is not easy to biodegrade. After the traditional activated sludge process, acesulfame potassium and sucralose even show a negative growth phenomenon
The current traditional process of sewage treatment plants has limited removal effect on ASs, especially acesulfame potassium and sucralose, so there is an urgent need for an effective process for advanced treatment of ASs sewage

Method used

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  • A process for advanced treatment of artificial sweetener sewage based on UV advanced oxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: a kind of process based on UV advanced oxidation treatment artificial sweetener wastewater, comprises the following steps:

[0021] Step 1: Preparation of biochar materials

[0022] Take biological materials and use pyrolysis method to prepare biochar materials; biochar materials are specifically made of peanut shells fired at 650 ° C;

[0023] Step 2: Preparation of composite oxide material

[0024] After mixing potassium persulfate and zeolite powder according to the mass ratio of 1.3:10, using a magnetic stirring device to stir, and then baking at 50 ° C for 10 hours to prepare the first mixture; then the biochar material obtained in step 1 Mix with the first mixture according to the mass ratio of 0.7:1, place it in deionized water for 15 minutes of ultrasonic vibration, and then continue to stir at 70°C until the water is evaporated to dryness to obtain a composite oxide material;

[0025] Step 3: Advanced Treatment of Artificial Sweetener Sewage

...

Embodiment 2

[0027] Example 2: Different from Example 1, the specific process of step 3 is: after the wastewater is treated in an anaerobic pool, anoxic pool, aerobic pool, and secondary sedimentation pool; then the waste water is discharged into the inner wall. After entering the reaction tank of a 22W constant power low-pressure mercury lamp, adjust the pH of the wastewater to 3, add 75mg / L NDMP resin to the wastewater, and then add 15mg / L composite oxide material to degrade for 30min.

Embodiment 3

[0028] Embodiment 3: a kind of technology based on the advanced treatment of artificial sweetener wastewater of UV advanced oxidation, comprises the following steps:

[0029] Step 1: Preparation of biochar materials

[0030] Take biological materials and use pyrolysis method to prepare biochar materials; biochar materials are specifically made of peanut shells fired at 500 °C;

[0031] Step 2: Preparation of composite oxide material

[0032] After mixing sodium persulfate and zeolite powder according to the mass ratio of 1.4:10, using a magnetic stirring device to stir, and then baking at 75 ° C for 13 hours to prepare the first mixture; then the biochar material obtained in step 1 and The first mixture was mixed according to the mass ratio of 0.8:1, placed in deionized water and ultrasonically oscillated for 18 minutes, and then continuously stirred at 75°C until the water was evaporated to dryness to obtain a composite oxide material;

[0033] Step 3: Advanced Treatment of...

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Abstract

The invention discloses a process for advanced treatment of artificial sweetener sewage based on UV advanced oxidation, comprising the following steps: 1) preparation of biochar material; 2) preparation of composite oxidized material; 3) advanced treatment of artificial sweetener sewage ; The present invention uses specific strong oxidants to effectively degrade artificial sweetener sewage based on UV advanced oxidation process; at the same time, utilizes specific NDMP resins that adsorb anions to efficiently adsorb negatively charged micro-pollutants through ion exchange, and artificially sweetened Adsorption of flavoring agents; effectively solves the problem of difficult biodegradation of artificial sweetener sewage in the prior art, makes sewage discharge meet the requirements, and reduces the environmental risk of artificial sweeteners.

Description

technical field [0001] The invention relates to the technical field of advanced sewage treatment, in particular to a process for advanced treatment of artificial sweetener sewage based on UV advanced oxidation. Background technique [0002] Artificial sweeteners (ASs) are synthetic or semi-synthetic organic compounds that replace sucrose. They are widely used in food, beverages, drugs, and personal care products. They are divided into nutritional types according to whether they can provide calories for the human body. And the non-nutritive type, the non-nutritive ASs is hardly metabolized in the human body, that is, it only produces very little heat in the body, and it caters to the dietary needs of contemporary consumers and is used in large quantities. The sweetness of ASs is caused by its specific AH-B structure, where A and B are electronegative atoms, and AH is a weakly acidic group. It can be seen from the chemical structure of sweeteners that ASs are generally highly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/32C02F1/28C02F103/36
CPCC02F1/28C02F1/32C02F1/72C02F2103/36C02F2209/08C02F2209/14C02F2209/16
Inventor 耿金菊沈国宸许柯任洪强张徐祥
Owner NANJING UNIV
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