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Method for rapidly representing sludge dewatering performance

A sludge dewatering and sludge technology, which is applied in material excitation analysis, fluorescence/phosphorescence, etc., can solve the problems of complex sludge composition, low correlation between fluorescence intensity and monitoring indicators, and achieve high sensitivity and simple sampling process. , cost saving effect

Active Publication Date: 2012-07-04
TONGJI UNIV
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Problems solved by technology

However, the composition of sludge is complex, and different types of fluorophores are superimposed on each other, which leads to a decrease in the correlation between fluorescence intensity and monitoring indicators

Method used

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  • Method for rapidly representing sludge dewatering performance
  • Method for rapidly representing sludge dewatering performance
  • Method for rapidly representing sludge dewatering performance

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Embodiment Construction

[0045] Below in conjunction with the accompanying drawings the embodiment of the present invention is described in detail as follows, the remaining sludge samples are taken from the secondary sedimentation tanks of 10 different types of sewage treatment plants in Shanghai, and these 10 different types of sewage treatment plants are Quyang Water Quality Purification Plant, Tianshan Sewage Treatment Plant, Shidongkou Sewage Treatment Plant, Songjiang Old Plant, Songjiang East Water Purification Plant, Songjiang West Water Purification Plant, Norsk Paper Mill, Songjiang Waste Landfill Sewage Treatment Plant, Jiangqiao and Yuqiao Domestic Waste Incineration Plants sewage treatment station. Each plant took 5 samples at different time periods, a total of 50 samples. After the sample is retrieved, refer to the attached figure 1 processing flow, perform the following operations.

[0046] 1) Sample pretreatment. First, take 100ml from each of the 50 remaining sludge samples, filter...

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Abstract

The invention relates to a method for rapidly representing sludge dewatering performance. The method comprises the following steps of: collecting 100ml of raw sludge or concentrated sludge; filtering with a filter membrane of 0.45mu m to obtain 10ml of sludge supernatant; measuring soluble organic carbon (DOC) of the supernatant; diluting the supernatant with distilled water until the DOC is less than 10mg / L; collecting a three-dimensional fluorescence spectrum (EEM) of the diluted supernatant; substituting the collected EEM spectrum into a database to analyze a parallel factor (PARAFAC) by using a DOMF1uor tool kit of Mat1ab 7.0 data processing software to determine a score of a component with excitation and transmission wavelength of (220,280) / 350nm; and multiplying the score by a diluting multiple of a sample and substituting the product into a sludge dewatering performance judgment relational formula to represent the sludge dewatering performance. By the method, the sludge dewatering performance can be rapidly detected without chemical reagent, and the detection can be completed only through filtering, diluting and three-dimensional fluorescence spectrum; and the method can be applied to monitoring the dewatering performance of various types of sludge of sanitary sewage treatment factories, industrial sewage biological treatment factories and the like.

Description

technical field [0001] The invention relates to a characterization method for quickly characterizing the dewatering performance of sludge in sewage treatment plants, specifically by characterizing the three-dimensional fluorescence characteristics of soluble organic matter in the supernatant of excess sludge in sewage treatment plants, and according to the fluorescence characteristics and sludge dehydration performance indicators The relationship between [specific resistance (SRF)] can quickly identify the dewatering performance of sludge. It belongs to the technical field of sewage treatment. Background technique [0002] Sewage plant sludge is the main secondary pollutant produced by sewage treatment. In a typical biological treatment process, sewage plant sludge is mainly composed of residual activated sludge. In recent years, my country's water pollution control business has developed rapidly, and the corresponding amount of sewage treatment and sludge production will ...

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Application Information

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Patent Type & Authority Patents(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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