A kind of sludge sampler and sludge in-situ sampling method

Abstract

The invention provides a sludge sampler and an in-situ sludge sampling method. The sampler has multi-stage sampling cylinders screwed to each other. A top plate is arranged on the top sampling cylinder. The shovels are hinged at the bottom for sampling. The inside of each arc shovel is connected with a cable, and the cable passes through the corresponding cable hole to connect to the cable fixing device on the top plate. After each cable is tightened, several arc shovels are closed. Plug the bottom end of the sampling cylinder. At the same time, according to the different sampling characteristics of indoor and on-site, the above-mentioned sampler is used to implement the sludge in-situ sampling method. The invention has the advantages of convenient sampling, simple operation, etc. The sampling process has little disturbance to the sludge, and the sludge sampling at different depths can be completed in situ.

Description

technical field [0001] The invention relates to the field of geotechnical test sampling, in particular to a sludge sampler and an in-situ sludge sampling method. Background technique [0002] The sewage treatment industry has long been influenced by the traditional "heavy water and light mud" thinking, resulting in the safe, effective and hygienic treatment and disposal of sludge has not been well resolved. A large amount of sludge is dumped directly in the low-lying depressions in the landfill, and it is very easy to form a sludge pool with certain hidden dangers. Sludge is likely to cause safety and environmental problems because of its high water content (water content is generally not less than 400%), pollutants, poor physical and mechanical properties, methane gas generation, and gushing. However, the disposal of the sludge bank needs to consider a variety of factors. The first problem is to carry out in-situ sludge sampling at different depths. However, the existing ...

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Problems solved by technology

[0002]The sewage treatment industry has long been influenced by the traditional idea of ​​"heavy water and light mud", which has led to the problem of safe, effective and hygienic treatment and disposal of sludge has not been well resolved

However, the disposal of the sludge bank needs to consider a variety of factors, the first problem is to carry out in-situ sludge sampling at different depths

However, the existing sludge sampler has a large disturbance to the sludge, and requires multiple sampling at different depths, and there are technical problems such as poor sampling effect and inconvenient sampling.

[0003] After retrieval, Chinese patent document CN101592565A discloses a kind of push-in slide sampler and sampling method for obtaining thin ooze sample, in order to make the obtained The mud sample can maintain its physical and chemical characteristics in the sampler. The sampler is composed of four parts: three-sided square cylinder, sliding film, transverse septum slot baffle and transverse septum. It needs to be adjusted many times during the sampling process. Sliding the film and diaphragm, it is extremely inconvenient to sample the sludge with a large buried depth

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