A high-efficiency sedimentation tank

Abstract

The invention relates to a high-efficiency sedimentation tank, which uses a Venturi internal member to assist the coagulation and growth of particulate impurities in the water flow, and then guides the grown particulate matter into the outer sludge channel by means of a swirl ring at the end of the Venturi tube and arranges them side by side Into the sludge collection pipe; during the process, the treatment and flow of raw water and the settlement and discharge of particulate matter occur in two relatively independent spaces, the Venturi tube and the sludge channel, without interference with each other; and the flow state inside the internal components It is not limited by laminar flow, and is mainly in a state of strong turbulence, so the flow rate of water treatment is large; and the flow state of strong turbulence is not conducive to the formation and attachment of biofilm, and the operating state of the equipment can be kept stable for a long time; through the swirl ring and the throat pipe The coordinated configuration of the inscribed direction of the hole can make most of the particles entering the sludge channel, especially the large particles, actively avoid the through hole, or slide through the surface of the through hole by means of the swirl inertia, avoiding It enters the throat again through the through hole with the water flow; while the fine particles that have not yet grown in particle size are allowed to enter the throat again to participate in the new coagulation and growth process; this can also make the passage at the throat The hole is not easy to be blocked, prolonging the operation and maintenance period of the equipment.

Description

technical field [0001] The invention relates to sewage treatment equipment, in particular to a high-efficiency sedimentation tank. Background technique [0002] Settlement treatment is an important part of the sewage treatment process. Compared with filtration treatment, it has obvious advantages in the removal of particulate matter in water, such as large processing capacity, low cost, no clogging problem, and continuous operation; therefore, it is widely used in the field of sewage treatment. In the prior art, in order to improve the sedimentation efficiency of the sedimentation tank, the shallow sedimentation theory is usually used to install internal components such as inclined plates or inclined pipes in the sedimentation tank to shorten the sedimentation distance of the particles. However, such internal components are extremely susceptible to the disturbance of the fluid in the tube or between the plates while shortening the particle settling distance, resulting in a d...

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Problems solved by technology

[0003] In order to overcome the problems in the prior art, the present invention provides a high-efficiency sedimentation tank. The high-efficiency sedimentation tank of the present invention allows the sedimentation and separation of particulate matter to be performed in a state of high-velocity turbulence, and has a larger processing capacity per unit volume than traditional sedimentation methods , which is conducive to the miniaturization of the sedimentation tank; at the same time, the high-efficiency sedimentation tank of the present invention can be automatically cleaned during operation without clogging, which is beneficial to the long-term continuous operation of the sedimentation tank

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