Solid-liquid separation device and application thereof

Abstract

The invention discloses a solid-liquid separation device and application thereof.The solid-liquid separation device comprises a main body which is a cylindrical cavity.A stirring flow pushing apparatus is mounted on the top of the cylindrical cavity, and a turbulent flow paddle or a flow pushing pump of the stirring flow pushing apparatus extend into the cylindrical cavity; a sewage inlet is formed in a side wall of the upper portion of the cylindrical cavity, and mud discharge outlets are formed in the side walls of the lower portion of the cylindrical cavity or the bottom of the cylindrical cavity; a partition plate is arranged inside the cylindrical cavity, a relatively closed conical cavity is enclosed by the partition plate in the cylindrical cavity, and the bottom of the conical cavity is communicated with the cylindrical cavity; a clear water overflow port is arranged on the top of the conical cavity.The solid-liquid separation device and the application have the advantages that the partition plate is arranged in the cylindrical cavity, the conical cavity is enclosed by the partition plate, accordingly, quick mixing regions, slow mixing regions and sludge concentrating and settling regions can be formed, functions of coagulating basins and settling basins can be integrated with one another, the solid-liquid separation device is small in occupied area, low in cost, repair and maintenance cost and failure occurrence rate and easy to operate, and only few facilities are required; the solid-liquid separation speeds can be effectively increased under double effects of centrifugal force and gravitational force, and solid-liquid separation effects can be effectively improved under the double effects of the centrifugal force and the gravitational force; excellent foundation can be laid for popularizing sewage purification environmental protection equipment.

Description

technical field [0001] The application relates to the field of sewage treatment, in particular to a 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 conditions. I...

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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