An efficient solid-liquid separation device and its application

Abstract

The invention discloses a high-efficiency solid-liquid separation device and an application thereof. A main body of the solid-liquid separation device is a cylindrical cavity, the inner side wall of the cylindrical cavity is provided with a threaded channel extending downwards, the top of the cylindrical cavity is provided with a stirring water impeller, and a flow disturbance paddle or water impelling pump of the stirring water impeller extends into the cylindrical cavity; the side wall of the upper part of the cylindrical cavity is provided with a sewage inlet, the side wall of the lower part or the bottom of the cylindrical cavity is provided with a sludge discharge port; the cylindrical cavity is internally provided with separation plates; a relatively closed conical cavity is enclosed by the separation plates enclose, and the bottom of the conical cavity communicates with the cylindrical cavity; the top of the conical cavity is provided with a clear water overflow port. The conical cavity is enclosed by the separation plates, and a fast mixing region, a slow mixing region and a sludge concentration and precipitation region are formed, so as to realize function integration of a coagulation tank and a sedimentation tank; the device has the advantages of small land occupation, less required equipment, low cost, low maintenance costs, simple operation, and low failure generation rate. By using double action of centrifugal force and gravity, and under the guidance of the threaded channel, the speed and the effect of solid-liquid separation are improved.

Description

technical field [0001] This application relates to the field of sewage treatment, in particular to an efficient solid-liquid separation device and its application. Background technique [0002] In the process of sewage treatment, it usually includes two major steps of physical and chemical reaction and solid-liquid separation, which is the so-called coagulation and sedimentation process. In the coagulation and sedimentation process, the coagulation or coagulation process is the physical and chemical reaction, which mainly refers to the process of adding coagulant to the sewage, completing the hydrolysis and polycondensation reaction under certain hydraulic conditions, and destabilizing and coagulating the colloidal dispersion system of the sewage. , the process is divided into two stages of mixing and particle coagulation. The mixing stage refers to the rapid and uniform diffusion of the input medicament including coagulant in the sewage to create good hydrolysis reaction c...

AI Technical Summary

Problems solved by technology

Regardless of whether the coagulation tank and the sedimentation tank are constructed individually or combined, they all belong to multi-section tanks; moreover, because the coagulation tank needs to be added in batches, it has the functional requirements of fast mixing and slow mixing, so it has multiple sections The setting requirements of the pool body; and the sedimentation tank has a complex structure due to functional requirements

In addition, due to the requirements of surface load and elevation, the design of the sedimentation tank requires a large area, high height and relatively large volume.

The coagulation tank needs to be equipped with multiple mixing pumps to meet the needs of fast mixing and slow mixing. At the same time, the sedimentation tank part also needs to be equipped with auxiliary equipment such as mud scrapers; the more equipment used, the more complicated the structure and the more complicated the operation , the greater the probability of failure; equipment manufacturing costs, maintenance costs, operating energy costs, etc. are relatively high

In addition, because the sedimentation tank uses gravity sedimentation to separate solids and liquids, affected by the sedimentation velocity, the sewage treatment time is long and the impact load resistance is poor.

[0028] In general, in the existing technology, the coagulation sedimentation tank has a large volume, occupies a lot of land, and has a long construction period; most of the required equipment is non-standard production, the technical difficulty required for production is large, and the investment cost is too high; equipment The layout of the site has high requirements for the site; the operation management requirements and operating costs are high; when faced with pollution changes, the ability to respond is poor

Therefore, many enterprises are facing the same problems when supporting such environmental protection facilities, that is, expensive equipment purchase, difficult equipment installation, difficult equipment operation and maintenance, and expensive equipment operation.

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