Device for measuring specific resistance parameter of sludge, use method and application thereof

A sludge specific resistance and parameter technology, applied in the direction of weighing by removing certain components, can solve the problems of large counting errors and complicated operations, and achieve the effect of reducing counting errors and stabilizing the operating environment

Inactive Publication Date: 2020-05-19
CENT & SOUTHERN CHINA MUNICIPAL ENG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method commonly used to measure the specific resistance of sludge is mainly the suction filter Buchner funnel method, which is complicated to operate and has a large counting error

Method used

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  • Device for measuring specific resistance parameter of sludge, use method and application thereof
  • Device for measuring specific resistance parameter of sludge, use method and application thereof
  • Device for measuring specific resistance parameter of sludge, use method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Such as Figure 1-3 As shown, the device for measuring the specific resistance parameter of sludge in this embodiment includes: sealing body 1, sample inlet 2, sample inlet sealing cover 2.1, air inlet 3, base 4, fastener 5 (clamp 5.1 and Bolt 5.2), air intake pipe 6, collection pipe 7, collection bottle 8, analytical balance 9, data line 10, computer system 11, nitrogen bottle 12 and nitrogen switch 13; said base is provided with filtrate collection tank 4.1, filtrate outlet 4.2 And sealing ring 4.3.

[0058] One end of the inlet pipe 6 is connected to the nitrogen cylinder 12 , and the other end is connected to the top of the sealed body 1 . The sealing body 1 and the base 4 are connected by a clamp 5.1. The filter unit includes an inlet sealing cover 2.1, an inlet 2, a sealing body 1 and a base 4 arranged from top to bottom. One end of the collection tube 7 is connected to the filtrate outlet 4.2, and the other end is placed in the collection bottle 8 and placed a...

Embodiment 2

[0065] Such as Figure 4 As shown, the device for measuring sludge specific resistance parameters based on Example 1 is different in that the device also includes a pressure control unit, specifically including a pressure gauge 14 and a pressure control valve 15 arranged on the intake pipe 7 . The pressure gauge 14 is used to record the pressure value in the sealing body 1 . The pressure control valve 15 is used to control the pressure inside the sealing body 1 .

[0066] The device of this embodiment is used to measure the specific resistance of sludge, and the specific steps are as follows:

[0067] (1) Turn on the computer system 11 and the analytical balance 9, wet the medium-speed filter paper and place it on the base 4, place the sealing ring 4.3 in the groove of the base, and tighten the seal body 1 and the base 4 with the tightening band 5.1 .

[0068] (2) Regulate the pressure control valve 15 so that the pressure gauge 14 shows a fixed value p=60KPa.

[0069] (3)...

Embodiment 3

[0074] Based on the device for measuring the specific resistance parameter of sludge in Example 1, the difference is that the fastener is an elastic rubber ring, which is sheathed on the outer surface of the joint between the sealing body 1 and the base 4 .

[0075] The device of this embodiment is used to measure the specific resistance of sludge, and the specific steps are the same as in embodiment 2.

[0076] Using the traditional method to measure the sludge specific resistance value, artificial reading, according to the sludge specific resistance value measured each time, the average value is obtained statistically. Compared with the average value, the single relative error can reach about 37%. However, compared with the average values ​​of the sludge specific resistance values ​​measured by Examples 2 and 3 of the present invention, the single relative error is only about 2% at most. Therefore, using the parameter b obtained in the embodiment of the present invention, th...

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Abstract

The invention relates to the technical field of sludge treatment, and discloses a device for measuring a specific resistance parameter of sludge, a use method and an application thereof. The device comprises a filtering unit, a gas supply unit, a filtrate collecting unit, a mass weighing unit and a counting unit. In the invention, the gas supply unit provides filtering pressure for the filtering unit; a sludge sample is filtered in a sealed positive pressure space of the filtering unit; and a filtrate is obtained by the filtrate collecting unit and conveyed to the mass weighing unit to be weighed, the counting unit in data connection with the mass weighing unit automatically obtains filtrate mass and time interval data and records a curve of a filtrate volume and time to obtain a parameterb, manual reading is avoided, and counting errors of a traditional method are effectively reduced. In addition, the filtering unit is provided with a space for keeping complete sealing.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a device for measuring the specific resistance parameter of sludge, a use method and an application thereof. Background technique [0002] Sludge specific resistance is an important index to evaluate sludge dewatering performance, and it is widely used. Sludge specific resistance refers to the resistance of sludge filter cake per unit dry weight per unit filtration area under a certain pressure. At present, the method commonly used to measure the specific resistance of sludge is mainly the suction filter Buchner funnel method, which is complicated to operate and has a large counting error. Usually the Buchner funnel is determined by measuring the speed of the sludge filtrate filtration medium, that is, R=2pA 2 b / (μC). R is the specific resistance of the sludge, p is the filtration pressure, A is the filtration area, b is the slope of the straight line of the ratio T / V...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 邱宏俊王明阳
Owner CENT & SOUTHERN CHINA MUNICIPAL ENG DESIGN & RES INST
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