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A degradation prediction method for removing artificial sweetener in secondary effluent by ultraviolet/sodium persulfate

A technology of artificial sweetener and secondary effluent, applied in special data processing applications, instruments, electronic digital data processing, etc., to achieve the effect of reducing the cost of small experiments

Active Publication Date: 2018-12-14
NANJING UNIV
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Problems solved by technology

[0003] In some current advanced treatment processes, activated carbon adsorption, coagulation precipitation, and chlorination disinfection have only limited removal effects on artificial sweeteners, while UV disinfection only has a removal effect on acesulfame potassium
The advanced ozone oxidation process can only partially remove artificial sweeteners under the dosage and contact time of the actual sewage treatment plant

Method used

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  • A degradation prediction method for removing artificial sweetener in secondary effluent by ultraviolet/sodium persulfate
  • A degradation prediction method for removing artificial sweetener in secondary effluent by ultraviolet/sodium persulfate
  • A degradation prediction method for removing artificial sweetener in secondary effluent by ultraviolet/sodium persulfate

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Embodiment Construction

[0026] The present invention is further described below in conjunction with specific embodiment, but protection scope of the present invention is not limited thereto:

[0027] A degradation prediction method for ultraviolet / sodium persulfate removal of artificial sweeteners in secondary effluent: comprising the following steps:

[0028] S1: Take the effluent from the secondary settling tanks of three domestic sewage treatment plants (WWTP), according to the HCO in the three actual water bodies 3 - , Cl - , NO 3 -, humic acid concentration, based on the principle of response surface Box-Benhnken design (BBD), using Design Expert 10.0 software to design an experimental program with four factors and three levels. Table 1 shows the relevant parameter values ​​of the three actual water bodies, Table 2 shows the factor levels and codes of the response surface experiment, and Table 3 shows the specific scheme of the response surface experiment design and the removal rate of ACE a...

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Abstract

The invention discloses a degradation prediction method for removing artificial sweetener in secondary effluent by ultraviolet / sodium persulfate, comprising the following steps: (1) according to the concentration of HCO3-, Cl-, NO3-, and humic acid in real water, designing a response surface; 2. adding artificial sweetener into that simulate water, and utilizing the ultraviolet / sodium persulfate advanced oxidation process to carry out oxidation degradation; (3) according to the removal rate of artificial sweetener, using Design Expert to fit the model equation. The method of the invention cansimulate the removal effect of the artificial sweetener in the secondary effluent in the ultraviolet / sodium persulfate advanced oxidation process by establishing a model, thereby judging the feasibility of the process removal effect and effectively reducing the pilot test cost.

Description

technical field [0001] The invention relates to the technical field of sewage purification treatment, in particular to a method for predicting the degradation of artificial sweeteners removed from secondary effluent by ultraviolet light / sodium persulfate. Background technique [0002] Artificial sweeteners are a type of food additives that are widely used in the food, beverage, pharmaceutical and personal care industries. The 7 common artificial sweeteners are acesulfame potassium (ACE), sucralose (SUC), saccharin (SAC), cyclamate (CYC), aspartame (ASP), neotame (NEO) and new orange Epidihydrochalcone (NHDC), among which ACE and SUC have a higher detection rate in the environment. Current research shows that most artificial sweeteners will not be degraded by the human body, and will be excreted into the environmental water body along with urine and feces. Sewage treatment plants are the main gathering place of artificial sweeteners. Artificial sweeteners have become a new ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 耿金菊傅滢滢任洪强
Owner NANJING UNIV
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