Efficient sedimentation tank

Abstract

The invention relates to an efficient sedimentation tank. Particle impurities in water flow are assisted to coagulate and grow by using a venturi internal component, and then the grown particles are introduced into a sludge channel on the outer side at the tail end of a venturi pipe by virtue of a cyclone ring and are discharged into a sludge collecting pipe. In the process, treatment and flowingof raw water and sedimentation and discharge of particulate matters respectively occur in two relatively independent spaces, namely, the venturi pipe and the sludge channel, and mutual interference does not exist. The flowing state in the internal component is not limited by laminar flow, and the internal component is mainly in a strong turbulence state, so that the water treatment flow is large.The strong turbulence flow state is unfavorable for the generation and attachment of a biological membrane, and the equipment operation state can be kept stable for a long time. Through the cooperative configuration of the cyclone ring and a through hole in a throat pipe in the internally tangent direction, most of particulate matter, especially large particulate matter, entering the sludge channel can actively avoid the through hole or slide through the surface of the through hole by means of rotational flow inertia, the particulate matter is prevented from entering the throat pipe again along with water flow through the through hole, and fine particles of which the particle sizes do not grow up are allowed to enter the throat pipe again to participate in a new coagulation growth process.Therefore, the through hole at the throat pipe is not easy to block, and the operation and maintenance period of the equipment is prolonged.

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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