Flocculation reactor

Abstract

The invention discloses a flocculation reactor, comprising a water inlet, a water outlet and a reactor body arranged between the water inlet and the water outlet, wherein the reactor body comprises a spiral sluice with width continuously changed; and the spiral sluice is used for ensuring the velocity of the flow in the flocculation reactor to continuously change in a gradient manner and gradually decrease. The flocculation reactor designed in the invention conforms to the requirement of coagulation kinetics for gradient change of velocity, can not only meet the requirement of rapid growth of the grains but also reduce breakage of the large scale grains, and reduces the energy consumption and the reaction time while improving the flocculation effect.

Description

technical field [0001] The invention relates to a water treatment device, in particular to a flocculation reactor of a spiral flow tank with continuously changing velocity gradient. Background technique [0002] The flocculation process is a process in which floc particles grow gradually. The velocity gradient plays two opposite roles in the flocculation reactor. A larger velocity gradient corresponds to a greater collision frequency and thus promotes the growth of particles. At the same time, an increase in the velocity gradient also increases the probability of breaking large-scale particles. [0003] Existing flocculation reactors, such as reciprocating flocculation reactors, rotary flocculation reactors, and folded plate flocculation reactors, all use different structures of flocculation reactors to change the flow rate and direction of water flow to achieve flocculation effects. However, due to the large fluctuations in the velocity gradient of this type of flocculatio...

AI Technical Summary

Problems solved by technology

However, due to the large fluctuations in the velocity gradient of this type of flocculation reactor, the change trend is wavy or broken-line, which causes the velocity gradient of the existing flocculation reactor to be very large at the turning or the water passing section. Velocity gradient is very small in straight pipe section or at the place with larger cross-section

Especially in the late stage of the flocculation reaction, when the size of the particles is large, the breakage of large particles will undoubtedly increase at the corner with a large velocity gradient or at the small cross-section of the water, which will eventually lead to a decline in the flocculation effect.

This brings high energy consumption and long reaction time of existing flocculation reactors

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