Clarification tank with submersible reflux pump composite micro-vortex reaction process

Abstract

The invention discloses a clarification tank. On a basis of a micro-vortex flocculation technology, a device which can form sludge circulation is adopted, such that advantages of traditional water processing processes can be preserved, and defects thereof can be made up. Therefore, an optimal treatment effect can be achieved. According to the clarification tank with the submersible reflux pump composite micro-vortex reaction process, the tank comprises a tank body structure. A central cylinder is arranged at the center of the tank body. A water inlet pipe is arranged at the middle-lower part of the tank body. The bottom of the tank is provided with a gentle slope and a sludge discharge pipe. The central cylinder comprises a reaction first zone and a reaction second zone. The reaction first zone has a tapered cylindrical shape. The reaction second zone is welded on the periphery of the reaction first zone. The bottom of the reaction second zone is annular and is manufactured with steel. The inner ring is welded with the reaction first zone, and a concrete peripheral cylinder is sealed on the outer ring. Micro-vortex flocculators are filled in the reaction first zone and the reaction second zone. A flow guide device is arranged on the bottom of the side of the reaction second zone. An umbrella-shaped plate is arranged below the flow guide device. A submersible reflux pump is arranged on the bottom of the reaction first zone. A multi-point water distribution system is also arranged at an end of the water inlet pipe.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a clarifier adopting a submersible reflux pump and conforming to a micro-vortex reaction process. Background technique [0002] The coagulation treatment process of water and wastewater includes three stages: mixing of water and chemicals, reaction and separation of flocs and water. The clarifier is a special equipment that completes the above three processes and integrates them. The medium used to trap and separate impurity particles in the clarifier is suspended sludge. In the clarifier, the sediment is lifted and placed in a uniformly distributed suspension, forming a high concentration of stable active sludge layer in the tank. The raw water flows from bottom to top in the clarifier, and the sludge layer can be in a dynamic equilibrium state in the rising water flow due to gravity. When the raw water passes through the activated sludge layer, using ...

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Problems solved by technology

But it brings a new problem: there is no sludge circulation formed by mechanical agitation, the collision probability of suspended particles in raw water is small, the consumption of chemicals is not effectively utilized, and it is difficult to form flocs compared with mechanical agitation clarifiers, especially at low temperature and low turbidity Raw water with low temperature, chemical consumption has nearly doubled, especially for raw water with low temperature and low turbidity.

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