CN201470160U - Mechanical stirring clarifier - Google Patents

Abstract

A kind of mechanical stirring clarifier. After the raw water is mixed with the pipeline static mixer and the chemical agent, it directly enters the center cylinder of the clarification tank. A lifting and stirring impeller is installed in the center cylinder. On the one hand, the returning active sludge is fully mixed with the influent water, the flocculation activity of the active sludge is utilized to the greatest extent, the dosage of chemicals is reduced, and the quality of the effluent is improved. The outlet water of the central cylinder enters the reaction area through the diversion cover to complete the flocculation reaction, and then enters the sedimentation area to separate the solid from the liquid. The sludge discharge pipe is regularly discharged. The second reaction zone and the separation zone are relatively separated by using a shroud. The civil structure type of the mechanical stirring clarifier is greatly simplified, and the design and construction of the civil structure are convenient.

Description

Mechanical stirring clarifier

technical field

The utility model relates to a mechanical stirring clarifier for municipal water supply treatment.

Background technique

At present, the structure of the mechanically stirred clarifier commonly used in China is mainly composed of the first reaction chamber, the second reaction chamber and the separation chamber. The upper part of the whole pool body is cylindrical, the lower part is truncated conical, and a triangular annular reinforced concrete water distribution tank is arranged in the middle, and a deflector needs to be arranged in the second reaction chamber. The stirring device is composed of a lifting impeller and a stirring paddle, and the lifting impeller is installed at the partition between the first and second reaction chambers. The civil structure is complex, the construction is difficult, and the equipment installation is difficult, which seriously restricts the application of mechanical stirring clarifiers.

Contents of the invention

The purpose of this utility model is to provide a mechanically stirred clarifier with simple structure and convenient equipment installation, which can fully utilize the characteristics of the mechanically stirred clarifier, which can adapt to large changes in turbidity of influent water quality and less dosage of chemicals.

The mechanical agitation clarifier of the utility model includes a water inlet pipe, a water outlet pipe, a mud discharge pipe, a sump, and a mud scraper. Entering the center cylinder of the clarification tank, a lifting and stirring impeller is installed in the center cylinder, on the one hand, the active sludge at the bottom of the tank is returned to the central cylinder, and on the other hand, the returned active sludge is fully mixed with the incoming water, and the activity is maximized. The flocculation activity of sludge reduces the dosage of chemicals and improves the quality of effluent. The outlet water of the central cylinder enters the second reaction zone through the diversion cover to complete the flocculation reaction, and then enters the sedimentation zone to separate the solid and liquid. The clarified liquid in the upper layer is discharged through the sump, and the excess old sludge at the bottom of the tank is collected by the sludge scraper at the bottom of the tank. Then it is regularly discharged through the sludge discharge pipe.

The mechanically agitated clarifier of the utility model no longer uses a reinforced concrete triangular annular water distribution tank, and uses a steel guide cover to relatively separate the second reaction zone from the separation zone. The civil structure type of the mechanical stirring clarifier is greatly simplified, and the design and construction of the civil structure are convenient.

The mechanical agitation clarification tank of the utility model can adapt to the raw water whose influent turbidity changes greatly, and can be widely used in the clarification treatment of domestic and foreign water supply treatment plants. It has the advantages of simple civil structure, easy equipment installation, less dosage of chemicals, low turbidity of effluent, convenient operation and management, and saving land area.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of mechanical agitation clarifier of the present utility model;

Fig. 2 is a structural schematic diagram of a top view of the mechanical agitation clarification tank of the present invention.

Detailed ways

The mechanical agitation clarifier of the utility model includes a water inlet pipe 1, an outlet pipe 5, a mud discharge pipe 6, a sump 7, and a mud scraper 8. After the raw water and the medicine are mixed, it directly enters the center cylinder 2 of the clarification tank, and the center cylinder is equipped with A lifting and stirring impeller 3, through the stirring and lifting of the impeller, on the one hand, the active sludge at the bottom of the pool is returned to the central cylinder 2, and on the other hand, the returned active sludge is fully mixed with the incoming water, and the active sludge is used to the maximum extent. The flocculation activity of slag is improved, the dosage of chemicals is reduced, and the quality of effluent water is improved. The outlet water of the central cylinder 2 enters the second reaction zone through the diversion cover 4 to complete the flocculation reaction, and then enters the sedimentation zone to separate the solid and liquid. The clarified liquid in the upper layer is discharged through the sump 7, and the excess old sludge at the bottom of the tank is scraped through the bottom of the tank. The machine 8 collects, and then regularly gets rid of through the mud discharge pipe 6. By canceling the triangular ring-shaped water distribution tank and using a steel shroud to separate the second reaction zone from the separation zone, the civil structure of the mechanically stirred clarifier is greatly simplified, which facilitates the design and construction of the civil structure, and simplifies the mixing, Lifting equipment installation.

Claims (2)

1. accelerator, comprise water inlet pipe (1), outlet pipe (5), discharge pipeline (6), water leg (7), mud scraper (8), it is characterized in that: central tube (2) is set in depositing reservoir central authorities, after former water and medicament mix, directly enter depositing reservoir central tube (2), establish a lifting in the central tube, agitator arm (3), the water outlet of central tube first reaction zone enters second reaction zone by kuppe (4) and finishes flocculation reaction, enter the settling zone then and make Separation of Solid and Liquid, the clarified solution on upper strata is by water leg (7) water outlet, at the bottom of the pond unnecessary outmoded body refuse through the pond at the bottom of mud scraper (8) collect, regularly get rid of by discharge pipeline (6) road again.

2. accelerator according to claim 1 is characterized in that: adopt steel kuppe (4) to separate second reaction zone is relative with the Disengagement zone.

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