Method for evaluating sludge dewatering performance

A technology for sludge dewatering and dewatering performance, which is applied in biological sludge treatment, dewatering/drying/concentrating sludge treatment, flow characteristics, etc., and can solve problems such as low accuracy, low repeatability, and complex operation

Pending Publication Date: 2022-05-10
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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Problems solved by technology

A variety of sludge moisture content detection methods have been applied. However, the general method for evaluating sludge dewatering performance after anaerobic digestion has problems such as low accuracy, complicated operation, and low repeatability. At the same time, the sludge rheological index can reflect the digester Much attention has been paid to the mixing effect and rheological distribution of the internal sludge

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  • Method for evaluating sludge dewatering performance
  • Method for evaluating sludge dewatering performance
  • Method for evaluating sludge dewatering performance

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Embodiment Construction

[0028] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0029] The terms "a", "an", "the", "said" are used to indicate the presence of one or more elements / components / etc; the terms "comprising" and "have" are used to indicate an open-ended inclusion means and means that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0030] Such as figure 1 as shown, figure 1 A flow chart of an evaluation method for sludge dewatering perfo...

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Abstract

The invention provides a method for evaluating the dewatering performance of sludge. The method comprises the following steps: obtaining sludge with different rheological properties; performing anaerobic digestion test on the sludge with different rheological properties; measuring rheological indexes and dehydration performance of the sludge with different rheological properties after anaerobic digestion, and simulating the rheological indexes; and determining the relationship between the yield stress and the sludge dewatering performance through correlation test. According to the evaluation method for the sludge dewatering performance, the yield stress in the rheological indexes obtained through experimental measurement can be used for representing the sludge dewatering performance, and a new reference index is provided for evaluating the sludge dewatering rate.

Description

technical field [0001] The invention relates to the field of sludge dewatering performance detection, in particular to an evaluation method for sludge dewatering performance. Background technique [0002] With the improvement of material conditions, the excess sludge produced by urban sewage treatment plants is increasing year by year. Correct treatment and disposal of a large amount of excess sludge to realize the rational utilization of sludge is the current research hotspot. At present, the anaerobic digestion method, which can reduce the volume and quality of sludge, obtain methane and facilitate the flow of sludge, has aroused extensive interest of researchers. [0003] Since environmental regulations stipulate that sludge needs to be treated to reach a certain moisture content before it can be shipped out, the sludge dewatering capacity has affected the operation of the sewage plant. A variety of sludge moisture content detection methods have been applied. However, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N11/14C02F11/04C02F11/13
CPCG01N33/24G01N11/14C02F11/04C02F11/13
Inventor 曹秀芹王鑫王浩冉
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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