Mud high-pressure filtering and compressed dewatering testing cavity and device

Abstract

The invention belongs to the technical field of environmental geotechnics and discloses a mud high-pressure filtering and compressed dewatering testing cavity. The mud high-pressure filtering and compressed dewatering testing cavity comprises a force application pushrod, a top cover, a cylinder barrel, a piston, a lower porous plate, a base and a first water pressure transmitter, wherein the forceapplication pushrod is embedded inside a through hole formed in the top cover and can move axially; the top cover is detachably arranged on the top opening of the cylinder barrel in a sealed mode; the piston abuts against the inner wall of the cylinder barrel and is fixedly connected with the first end of the force application pushrod and driven by the force application push rod to move axially along the inner wall of the cylinder barrel; the base is arranged on the bottom opening in a sealed mode on the cylinder barrel; the lower porous plate is arranged in the lower portion of the inner cavity of the cylinder barrel and abuts against the base; the sensing end of the first water pressure transmitter is fixed inside the inner cavity of the cylinder barrel; the base is provided with a lower drainage channel and communicated with the liquid outlet of the lower porous plate. The mud high-pressure filtering and compressed dewatering testing cavity can in real time convert data of transmission pressure application change, liquid drainage and liquid pressure, thereby increasing diversity of testing data.

Description

technical field [0001] The invention relates to the technical field of environmental geotechnical engineering, in particular to a mud high-pressure filtration compression dehydration test cavity and a test device. Background technique [0002] In the treatment and disposal of municipal sludge, reducing the water content of sludge is an effective means to achieve volume reduction, so it is often necessary to separate solid-liquid from sludge. According to the dehydration form, the existing solid-liquid separation equipment can be roughly divided into belt filter press, plate and frame extrusion and centrifugal separation. difference. In order to select the appropriate dehydration equipment, operation process, dehydration test is usually required. [0003] Preliminary dewatering performance testing of mud at a laboratory scale is a common choice. Mainly include: capillary water absorption time test, specific resistance test, zeta potential test and other methods, these meth...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a mud piston filter compression dehydration test chamber, which solves the technical problems in the prior art that the preliminary dehydration performance test index of the mud is single at the laboratory scale, the conclusion is narrow in applicability, and poor in reliability.

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