Sewage treatment plant optimization method based on fractal dimension

A sewage treatment plant, fractal dimension technology, applied to the adjustment method of biological treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., to achieve low cost, save energy and time, and simplify multiple management indicators Effect

Active Publication Date: 2018-11-16
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY +1
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Problems solved by technology

[0003] For the current problems in detection and management, we use the sludge two-dimensional fractal dimension D to simultaneously describe the biological activity and physical structure of sludge

Method used

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  • Sewage treatment plant optimization method based on fractal dimension
  • Sewage treatment plant optimization method based on fractal dimension
  • Sewage treatment plant optimization method based on fractal dimension

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Experimental program
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Embodiment

[0081] Example analysis:

[0082] The experimental samples were taken from 7 SBR reactors in the laboratory, and the activated sludge was taken from the aerobic end of the reactor. G1 and G2 are floc sludge, D1 and D2 are granulated floc sludge, and Y1, Y2, and Y3 are granular sludge. The fractal dimension, sludge respiration rate, sludge index and adsorption capacity of seven different sludges were calculated experimentally. The specific data are shown in Table 1. Finally, the Origin software was used to perform linear or nonlinear fitting on the fractal dimension D and other indicators respectively to obtain a calculation model, and the results are shown in the attached figure 1 , with figure 2 And attached image 3 shown. With the increase of fractal dimension D, the specific oxygen consumption rate SOURe, SOURt and adsorption capacity Qmax decreased linearly, and the sludge index and compressibility index showed a non-linear downward trend.

[0083] When the fractal ...

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Abstract

The invention discloses a sewage treatment plant optimization method based on fractal dimension; the method comprises the following steps: 1, diluting sludge, and placing one drop on a slide glass; 2,using a microscope to take an image for the sludge; 3, using image processing software to process the taken sludge image, obtaining a projection area A and a periphery P geometry parameter of a single sludge floc, and obtaining a 2D fractal dimension D according to a fractal theory; 4, calculating and analyzing to derive biological activity and physical arrangement, that include the settlement performance and adsorptivity, of the sludge via the fractal dimension D, thus evaluating the activated sludge operation state. The method manages the sewage treatment plant operation according to the sludge fractal dimension D, simultaneously finishes operation management of a reaction pool and a secondary settlement pool through one index, thus providing a quantification management method for sewage treatment plant high efficiency safety standard operation and energy saving and consumption reduction.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and relates to a method of simultaneously describing the biological activity and physical structure of sludge by using the sludge fractal dimension D, and simultaneously completing the operation management of the reaction tank and the secondary sedimentation tank through one index in the process of sewage treatment. Background technique [0002] At present, the water purification process involves the detection of many water quality and sludge parameters, which is a huge workload for managers and requires more time and energy. At the same time, during the operation of the sewage treatment plant, since the management of the reaction tank and the sedimentation tank are separated, there are different detection and control indicators between them. It is difficult to say. Traditionally, biological activity is increased in the reaction tank to ensure the removal effect of sewage, but the sludge settling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/26G06T7/00G06T7/62G06F17/18C02F3/00C02F3/12G01N21/84
CPCC02F3/006C02F3/12G01N21/84G06F17/18G06Q10/04G06Q10/06393G06Q50/26G06T7/0004G06T7/62G06T2207/10061Y02W10/10
Inventor 李志华张双双俞汉青盛国平杨成建郭耀
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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