Method for quickly identifying refuse landfill percolate in sewage water discharged into sewage treatment plant

A technology for sewage treatment plants and landfills, which is used in material excitation analysis, fluorescence/phosphorescence, etc., to achieve the effects of simple pretreatment and measurement, high sensitivity, convenient sampling and portability

Active Publication Date: 2011-04-06
TONGJI UNIV
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  • Application Information

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Problems solved by technology

On the other hand, there is currently no easy way to quickly identify the presence of leachate in wastewater treatment plant influent

Method used

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  • Method for quickly identifying refuse landfill percolate in sewage water discharged into sewage treatment plant
  • Method for quickly identifying refuse landfill percolate in sewage water discharged into sewage treatment plant
  • Method for quickly identifying refuse landfill percolate in sewage water discharged into sewage treatment plant

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Embodiment Construction

[0031] Attached below Figure 1-8 Embodiments of the present invention will be described in detail.

[0032] The sample sampling points are sewage treatment plants of urban domestic sewage (3 plants), sewage treatment plants of domestic waste sources (landfill leachate) (1 plant), sewage treatment plants of industrial sewage sources (3 plants) and Sewage treatment plants (1 plant) of special industrial sources (paper mills), a total of 8 different types of sewage treatment plants; samples are the remaining sludge from the biological treatment units of each plant.

[0033] Sample pretreatment. The remaining sludge from each sewage treatment plant was centrifuged for 10 minutes under the condition of a separation factor of 2000 to obtain a supernatant, and the supernatant was filtered with a 0.45 μm filter membrane to remove the suspended matter to obtain the sample to be tested;

[0034] Sample determination. The sample to be tested is put into the cuvette of the three-dimensi...

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Abstract

The invention relates to a method for quickly identifying refuse landfill percolate in the sewage water discharged into a sewage treatment plant, in particular to a method for quickly judging whether percolate is illegally discharged into the sewage treatment plant. The method comprises the following steps: taking residual active sludge in the sewage treatment plant, then carrying out centrifugation on the residual active sludge so as to obtain a supernatant liquid; carrying out filtration on the supernatant liquid by a filter membrane (0.45 mu m) so as to remove suspended matters in the supernatant liquid to obtain a sample; taking a point every 2nm and then carrying out three-dimensional fluorescence spectrum survey on the sample so as to obtain a numerical three-dimensional fluorogram under the conditions that the excitation wavelength is 200 to 500nm, the emission wavelength is 250 to 600nm, the slit width is 5nm, and the scanning speed is 1200nm/min, wherein in case the fluorescence peak of the sample only refers to fulvic acid-lile substances (Ex/Em: 240/440nm) and humic acid-like substances (Ex/Em: 330/420 nm), but without protein-like substances, the numerical three-dimensional fluorogram shows that the refuse landfill percolate exists in the sewage water discharged into the sewage treatment plant, otherwise, the numerical three-dimensional fluorogram shows that no refuse landfill percolate exists in the sewage water discharged into the sewage treatment plant. The method of the invention has the advantages of simpleness, speediness, less required samples, high sensitivity, low cost, and capability of being widely applicable for quickly judging whether percolate is discharged into a sewage treatment plant.

Description

technical field [0001] The invention relates to a method for quickly identifying the leachate of landfill sites in the influent of sewage treatment plants, specifically by characterizing the fluorescence characteristics of soluble organic matter in the supernatant of sewage treatment plants to quickly identify whether there is seepage of landfill sites The method of discharging the filtrate into the sewage treatment plant. It belongs to the technical field of sewage treatment. Background technique [0002] Landfill leachate is a difficult wastewater to treat. The root cause is the high concentration of ammonia nitrogen, high concentration of salt and difficult biodegradable humic acid [Xu Yudong, Nie Yongfeng, Yue Dongbei. Evaporation treatment process of landfill leachate. Environmental pollution control technology and equipment, 2005, 6(1):68-72; Tarnacki K, Lyko S, Wintgens T, Melin T, Natau F. Impact of extra-cellular polymeric substances on the filterability of activa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 何品晶余光辉邵立明章骅吕凡
Owner TONGJI UNIV
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