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Replaceable measuring method for bio-available organic matter content in household garbage leachate

A technology of domestic waste and leachate, applied in the preparation of test samples, fluorescence/phosphorescence, material excitation analysis, etc., can solve the problems of poor bioavailability, and achieve the effect of fast detection speed and high sensitivity

Inactive Publication Date: 2013-12-04
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

Humic acid-like fluorescence peaks include fulvic acid-like fluorescence peaks and humic acid-like fluorescence peaks, which are derived from fulvic acid and humic acid substances in leachate, with poor bioavailability

Method used

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  • Replaceable measuring method for bio-available organic matter content in household garbage leachate
  • Replaceable measuring method for bio-available organic matter content in household garbage leachate

Examples

Experimental program
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Embodiment

[0030] Collect 8 leachate samples from different treatment sections such as the adjustment tank, UASB tank, aerobic tank and membrane filtration tank in the leachate treatment workshop of a domestic waste composting plant in Beijing, transport them back to the laboratory at low temperature within 12 hours, and centrifuge at 10,000rpm and 4°C After 15 minutes, pass through a filter membrane with a pore size of 0.45 μm, and collect the filtrate;

[0031] Add an equal volume of 0.1mol.L to the filtrate -1 Na 2 S solution to remove heavy metal ions, mix evenly and stand still for 2 hours, then centrifuge, pass the supernatant through a filter membrane with a pore size of 0.45 μm, and collect the filtrate;

[0032] Measure the concentration of organic matter DOC in the leachate filtrate, and then dilute 20 to 100 times according to the size of the sample DOC, so that the diluted sample is 0-1 .

[0033] The diluted filtrate is scanned by three-dimensional fluorescence spectrum, t...

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Abstract

A replaceable measuring method for the bio-available organic matter content in household garbage leachate comprises the steps that (A) samples of household garbage leachate are collected, (B) Na2S solutions with the same volume are added into the leachate for settling heavy metal, (C) organic matter in the leachate is diluted, so that the content of the organic matter is larger than 0 and smaller than 10mg / L-1, (D) three-dimensional fluorescence spectrum scanning is carried out, and three-dimensional fluorescence spectrum matrix data are obtained, (E) a fluorescence matrix database is set up, parallel factor analysis is carried out on the Matlab through a DOMFluor software package, and a fluorescence component number and the concentration point Fmax of the leachate in a corresponding component, and (F) the Fmax value of the tryptamine-like component within the range of 320-365nm of emission wavelength of the fluorescence peak in the fluorescence component of the leachat is multiplied by the dilution ratio n of the leachate to obtain the tryptophan-like concentration point F of the sample in leachate stoste. If the F value is large, the bio-available organic matter content is high, and if the F value is small, the bio-available organic matter content is low.

Description

technical field [0001] The invention belongs to the technical field of municipal wastewater treatment and disposal, and in particular relates to an alternative determination method for the content of biologically available organic matter in leachate of domestic garbage. Background technique [0002] During the stacking, composting and landfilling of domestic waste, a large amount of landfill leachate is produced. The treatment of landfill leachate includes biological, physical and chemical methods. Biological methods include aerobic and anaerobic treatment, which are suitable for leachate containing a large amount of bioavailable organic matter; physical methods such as ultrafiltration, nanofiltration and reverse osmosis are suitable for leachate containing a large amount of Leachate of macromolecular organic matter; chemical methods include photocatalysis, Fenton method, etc., which are often used to treat leachate containing a large amount of refractory organic matter. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64G01N1/28
Inventor 何小松潘红卫席北斗崔东宇檀文炳李丹
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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