The invention discloses a device for accurately and rapidly determining the permeability coefficient of soil, and belongs to technical field of rock and soil analysis equipment. The device comprises a device rack and further comprises a water supply device, a rapid saturation device, a soil sample column, a support and a permeation flow testing device. The soil sample column is fixedly arranged on the support, the water supply device and the rapid saturation device are fixedly arranged above the soil sample column and connected with a cover plate at the upper end of the soil sample column, and the permeation flow testing device is arranged on one side of the support and connected with the lower end of the soil sample column through a testing water guide pipe. The device well solves the problems that soil saturation is not sufficient, and permeation flow reading errors are caused, the testing accuracy of the device is improved, flexible control over the hydraulic gradient is achieved, and the device is convenient to operate, high in precision, low in input cost and wide in application range.

Device for accurately and rapidly determining permeability coefficient of soil

The invention discloses a domestic sewage treatment method. The domestic sewage treatment method comprises the following steps: a) introducing a water body into a flocculating tank, adding a flocculating agent into the flocculating tank, introducing chlorine after filtering and adding alkali liquid; b) adding quick lime into the water body in the step a), stirring and filtering; c) adding activated carbon into the water body to obtain a water body B; and d) introducing the water body B into a setting pond and performing settling. The water body is adjusted to be neutral, untimely reaction between hydroxyl ions in the water body and the chorine is avoided, the chlorine can be dissolved into the water body, the generated hypochlorite reacts with ammonium ions in the water, and the ammonium ions in the water body are removed; and the quick lime is added into the water, so that microorganism and germs in the water can be killed.

Domestic sewage treatment method

The invention provides a penetration test device and method under a simulated ground stress condition. The device comprises a pressure measuring water tank, an adjusting mechanism, a soil consolidation mechanism, a soil sample container and a stress loading mechanism, wherein the soil consolidation mechanism compacts a soil sample in the soil sample container; the pressure measuring water tank comprises a water tank body, pressure measuring holes, a glass pressure measuring tube, a water seepage hole and an overflow hole; the soil sample container is contained in the water tank body; the pressure measuring holes, the water seepage hole and the overflow hole are arranged in the soil sample container; multiple pressure measuring holes are uniformly distributed along a vertical direction; thewater seepage hole and the overflow hole are arranged at the bottom end and the top end of the soil sample container; the adjusting mechanism adjusts the water head height between the overflow hole and the water seepage hole; and the soil sample container is flexible and is directly contacted with the acting part of the stress loading mechanism for receiving the stress.

Penetration test device and method under simulated ground stress condition

The utility model discloses a constant head permeability coefficient measuring device which comprises an experiment bucket and supporting legs welded to the bottom of the experiment bucket. A pressing disc is arranged in the experiment bucket and connected with a stress ring through a jack, the stress ring is fixed to the top of a counter-force frame, an annular support is arranged at the bottom of the experiment bucket and provided with a metal mesh plate, and a water bath temperature control layer is welded to the outer wall of the experiment bucket. The constant head permeability coefficient measuring device has the advantages that the pressing disc arranged in the experiment bucket is matched with the jack and the stress ring, and thus compaction operation can be conducted on a tested sample; the water bath temperature control layer is welded to the outer wall of the experiment bucket, the temperature of the tested sample and the temperature in the real environment can be identical, and the accuracy of the measurement data is improved; the optimal recharge amount in a refuse landfill can be accurately determined according to the measurement data, the problem that the garbage percolate recharge amount is difficult to determine is effectively solved, the degrading speed of garbage is increased, and the garbage percolate is effectively treated.

Constant head permeability coefficient measuring device

The utility model discloses a domestic sewage treatment device. The device comprises an oxidation reaction tank, a flocculation reaction tank and a sewage filtering tank. The oxidation reaction tank and the flocculation reaction tank are fixed to the upper portion of the sewage filtering tank through a fixed frame. The domestic sewage treatment device has the advantages that the domestic sewage treatment device is composed of the flocculation reaction tank, the oxidation reaction tank and the sewage filtering tank, and is simple in structure, and detailed in work division, each tank body has the different sewage treatment functions, the treatment step of the domestic sewage treatment device is simplified, the most tank bodies are made of existing materials, the manufacturing cost of the domestic sewage treatment device is reduced, the domestic sewage treatment device is suitable for sewage treatment of the small range of a city and also suitable for being used by the country and the remote area, the popularization difficulty of the sewage treatment device is reduced, sewage draining of the country area can conveniently meet the national draining standard, and the ecological environment is promoted to the stably and better developed.

Domestic sewage treatment device

Popular Tasks used by Researchers

How can I help with your research?

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

We encountered an error while loading the panel. Please try refreshing the page.

Something went wrong

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

Anyone with the link can view this chat. You can switch it back to private anytime.

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Gao Kewei

Author Tools

Chat about Author

Papers

Constant head permeability coefficient measuring device

Domestic sewage treatment device