Anti-force type large-size sludge solidifying and compressing tester

Abstract

The invention relates to an anti-force type large-size sludge solidifying and compressing tester, belonging to the technical field of environmental geotechnical engineering and composed of a top plate, a compressing container, a pressure piston, a geotextile, a connecting pipe, a percolate collector, a plastic drain bar, a tray, a displacement meter, a peristaltic pump, a jack, an upright post and a pedestal. The pressure piston is disposed above the compressing container which is disposed above the tray and in which the geotextile is paved; the geotextile at the top is disposed below a compressing disk; the plastic drain bar is inserted into the compressing container; the side wall of the tray is provided with drain holes; the jack is disposed between the tray and the pedestal; the displacement meter is composed of a magnetic support and a test instrument; the peristaltic pump is arranged on the upright post; a drinking-water pipe is disposed above the compressing disk; a drain pipe is disposed above the tray; one end of the connecting pipe is connected with drain holes on the side wall of the tray, and the other end is connected with the percolate collector. The cross action tester for solidifying and compressing characteristics of large-size sludge has many drain routes and large size; parts of elements are done with preservative treatment; the invention solves problems of using existing instrument to test solidifying and compressing characteristics of sludge, and can reasonably evaluate solidifying and compressing characteristics of sludge.

Description

technical field [0001] The invention belongs to the technical field of environmental geotechnical engineering, and in particular relates to a counterforce type large-scale sludge solidification compression tester. Background technique [0002] Sludge mainly comes from industrial wastewater treatment, waterworks and domestic sewage plants, etc. It has high water content and high organic matter content, and may contain chemical toxic and harmful substances, biological bacteria, and pathogenic bacteria. There are large differences in composition according to different causes , if the sludge is discharged directly without treatment, it will cause serious harm to the environment. At present, the treatment methods of sludge are mainly landfill and incineration. For landfill treatment, solidification and dehydration of sludge can increase the landfill height; for incineration treatment, solidification and dehydration of sludge can provide more heat value. Whether landfill or inci...

AI Technical Summary

Problems solved by technology

Due to the high water content of sludge and a large amount of organic matter, the current traditional geotechnical compression instrument only has upper and lower permeable surfaces that can permeate water, has few drainage paths, and the sample size is small, so the effect of sludge solidification compression test is poor.

The corrosiveness of sludge also requires the instrument to have a certain degree of corrosion resistance, which cannot be satisfied by traditional geotechnical compression instruments.

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