CN107285567A - A kind of multi-stage sewage biological treatment device - Google Patents

Abstract

The invention discloses a kind of multi-stage sewage biological treatment device, including sedimentation basin, anaerobic pond, aeration tank and filtering ponds, sedimentation basin left side wall, which is connected with water inlet pipe, water inlet pipe, is provided with water pump, and sedimentation basin inner top is provided with flocculant pipe；Sedimentation basin is connected by water pipe with anaerobic pond；Some passages are provided with the top of aeration tank, aeration tank bottom is provided with reducing motor, and reducing motor top motor shaft, which is connected with rotating shaft, rotating shaft, is provided with stirring vane and helical blade, stirring vane and helical blade are located in aeration tank；Aeration tank is connected by water pipe with filtering ponds；It is provided with the top of filtering ponds in cover plate, filtering ponds and is disposed with screen pack, softening resin bed and activated carbon layer from top to bottom, filtering ponds right side wall bottom is connected with outlet pipe.The present invention is handled sewage by the way that Physical, chemical method and bioanalysis are combined, so as to ensure that the water quality after processing reaches higher standard.

Description

A multi-stage sewage biological treatment device

technical field

The invention relates to the field of biological science and technology, in particular to a multi-stage sewage biological treatment device.

Background technique

The process of purifying sewage to meet the water quality requirements of a certain water body for drainage or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering, etc., and it is also increasingly entering the daily life of ordinary people. According to the classification of sewage sources, sewage treatment is generally divided into production sewage treatment and domestic sewage treatment. Production sewage includes industrial sewage, agricultural sewage and medical sewage, while domestic sewage is the sewage produced in daily life, which refers to the complex mixture of various forms of inorganic and organic substances. There are many ways to treat sewage, which can be generally classified into physical, chemical and biological methods.

Ordinary sewage treatment The sewage treatment efficiency is not high, and the water quality after treatment may not meet the requirements. For some situations with high water quality requirements, a single physical or chemical method is not applicable. By combining biological methods with physical and chemical methods , can effectively improve the sewage treatment effect.

Contents of the invention

The purpose of the present invention is to provide a multi-stage sewage biological treatment device to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A multi-stage sewage biological treatment device, including a sedimentation tank, anaerobic tank, aeration tank and filter tank, the left side wall of the sedimentation tank is connected with a water inlet pipe, the water inlet pipe is provided with a water pump, and the top of the sedimentation tank is provided with Flocculant tube; the top of the right side wall of the sedimentation tank is connected to the top of the left side wall of the anaerobic tank through a water pipe; the top of the aeration tank is provided with a number of ventilation holes, the bottom of the aeration tank is provided with a geared motor, and the top of the geared motor The motor shaft is connected with a rotating shaft, on which stirring blades and spiral blades are installed, and the stirring blades and spiral blades are located in the aeration tank; the top of the right side wall of the aeration tank is connected to the top of the left side wall of the filter tank through a water pipe; the filter tank A cover plate is arranged on the top, and a filter mesh plate, a softening resin layer and an activated carbon layer are arranged in the filter tank from top to bottom in sequence, and an outlet pipe is connected to the bottom of the right side wall of the filter tank.

As a further solution of the present invention: the top of the right side wall of the anaerobic tank is connected to the top of the left side wall of the aeration tank through a U-shaped pipe.

As a further solution of the present invention: the flocculant tube protrudes from the sedimentation tank, a funnel is provided at the top of the flocculant tube, and a number of through holes are provided at the bottom of the flocculant tube located in the sedimentation tank.

As a further solution of the present invention: the rotating shaft is a hollow shaft, and several one-way air outlets are uniformly arranged on the rotating shaft.

As a further solution of the present invention: the inner top of the rotating shaft is connected with an air inlet pipe, and the air inlet pipe is connected with a fan, and the fan is arranged on the top of the aeration tank.

Compared with prior art, the beneficial effect of the present invention is:

The present invention treats the sewage by combining the physical method, the chemical method and the biological method, so as to ensure that the water quality after treatment reaches a higher standard; the sludge in the aeration tank is stirred by setting stirring blades and spiral blades, and the spiral blades drive The sludge at the bottom of the aeration tank moves upwards to ensure that the aerobic bacteria in the sludge can fully contact with the sewage; by setting the hollow shaft, the external air enters the sludge through the hollow shaft, so that the oxygen is sufficient.

Description of drawings

Fig. 1 is a structural schematic diagram of a multi-stage sewage biological treatment device.

Fig. 2 is a schematic diagram of a partial structure at a rotating shaft in a multi-stage sewage biological treatment device.

In the figure: 1-sedimentation tank, 2-water inlet pipe, 3-water pump, 4-flocculant pipe, 5-anaerobic tank, 6-aeration tank, 7-fan, 8-intake pipe, 9-rotating shaft, 10- Stirring blade, 11-spiral blade, 12-cover plate, 13-filter tank, 14-filter plate, 15-softening resin layer, 16-activated carbon layer, 17-outlet pipe, 18-reduced motor, 19-U type Tube.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1～2, in the embodiment of the present invention, a kind of multi-stage sewage biological treatment device comprises sedimentation tank 1, anaerobic tank 5, aeration tank 6 and filter tank 13, and the left side wall of described sedimentation tank 1 is connected There is a water inlet pipe 2, a water pump 3 is arranged on the water inlet pipe 2, and a flocculant pipe 4 is arranged on the top of the sedimentation tank 1; the top of the right side wall of the sedimentation tank 1 is connected to the top of the left side wall of the anaerobic tank 5 through a water pipe; The top of the aeration tank 6 is provided with some ventilation holes, the bottom of the aeration tank 6 is provided with a geared motor 18, the motor shaft at the top of the geared motor 18 is connected to a rotating shaft 9, and a stirring blade 10 and a spiral blade 11 are installed on the rotating shaft 9. Stirring blades 10 and spiral blades 11 are located in the aeration tank; the top of the right side wall of the aeration tank 6 is connected to the top of the left side wall of the filter tank 13 through a water pipe; the top of the filter tank 13 is provided with a cover plate 12, which is convenient to open to The parts in the filter pool 13 are replaced; the filter screen 14, the softening resin layer 15 and the activated carbon layer 16 are sequentially arranged in the filter pool 13 from top to bottom, and the bottom of the right side wall of the filter pool 13 is connected with an outlet pipe 17;

The top of the right side wall of the anaerobic tank 5 is connected to the top of the left side wall of the aeration tank 6 through a U-shaped pipe 19, preventing the air in the aeration tank 6 from entering the anaerobic tank 5 and preventing oxygen from anaerobic in the anaerobic tank 5. Aerobic bacteria cause influence; the flocculant tube 4 protrudes from the sedimentation tank 1, and a funnel is arranged on the top of the flocculant tube 4 to facilitate the addition of flocculant, and the bottom part of the flocculant tube 4 located in the sedimentation tank 1 is provided with several through holes , so that the flocculant falls and the sewage is evenly mixed; the rotating shaft 9 is a hollow shaft, and a number of one-way air outlets are evenly arranged on the rotating shaft 9; The fan 7 is arranged on the top of the aeration tank 6, through which air can be injected into the aeration tank 6 to provide oxygen for the aerobic bacteria in the sludge in the aeration tank 6.

The working principle of the present invention is: the sewage is pumped into the sedimentation tank 1 through the water pump 3, the flocculant is added into the sedimentation tank 1 through the flocculant pipe 4, the flocculant in the sedimentation tank 1 reacts with the sewage, and the flocs are precipitated. At the same time, the sewage itself enters the anaerobic pool 5 after simple sedimentation in the sedimentation tank 1, and the sewage reacts with the anaerobic bacteria in the anaerobic pool 5 to remove organic matter in the waste water, improve the biodegradability of the sewage, and facilitate subsequent Aerobic treatment: After the sewage in the anaerobic tank 5 is treated, it enters the aeration tank 6 through the U-shaped pipe 19, and starts the deceleration motor 18 and the fan 7 at the same time. The air port is discharged, and the reduction motor 18 drives the rotating shaft 9 to rotate, so that the stirring blade 10 and the spiral blade 11 rotate, and the sludge and sewage are stirred and mixed for aerobic treatment; the sewage after aerobic treatment enters the filter tank 13 and passes through the filter screen in turn Plate 14, softening resin layer 15 and activated carbon layer 16 carry out filtering treatment, filter screen plate 14 filters impurities in water, softening resin layer 15 softens water, activated carbon layer 16 absorbs peculiar smell in water, and after filtering The final water is discharged from the outlet pipe 17.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (5)

1. a kind of multi-stage sewage biological treatment device, including sedimentation basin (1), anaerobic pond (5), aeration tank (6) and filtering ponds (13), Characterized in that, sedimentation basin (1) left side wall is connected with water inlet pipe (2), water inlet pipe (2) and is provided with water pump (3), it is described heavy Shallow lake pond (1) inner top is provided with flocculant pipe (4)；Pass through water pipe and anaerobic pond (5) left side at the top of sedimentation basin (1) right side wall Connected at the top of wall；Some passages are provided with the top of the aeration tank (6), aeration tank (6) bottom is provided with reducing motor (18), reducing motor (18) top motor shaft is connected with rotating shaft (9), rotating shaft (9) and is provided with stirring vane (10) and helical-blade Piece (11), stirring vane (10) and helical blade (11) are located in aeration tank；Pass through water pipe at the top of aeration tank (6) right side wall With being connected at the top of filtering ponds (13) left side wall；It is provided with the top of the filtering ponds (13) in cover plate (12), the filtering ponds (13) Screen pack (14), softening resin bed (15) and activated carbon layer (16) are disposed with from top to bottom, and the filtering ponds (13) are right Sidewall bottom is connected with outlet pipe (17).

2. multi-stage sewage biological treatment device according to claim 1, it is characterised in that anaerobic pond (5) right side wall Top is by U-tube (19) with being connected at the top of aeration tank (6) left side wall.

3. multi-stage sewage biological treatment device according to claim 1, it is characterised in that the flocculant pipe (4) is stretched out Sedimentation basin (1), flocculant pipe (4) top is provided with funnel, and the flocculant pipe (4) is located at the section bottom in sedimentation basin (1) It is provided with some through holes.

4. multi-stage sewage biological treatment device according to claim 1, it is characterised in that the rotating shaft (9) is hollow shaft, Some unidirectional gas outlets are evenly arranged with rotating shaft (9).

5. multi-stage sewage biological treatment device according to claim 4, it is characterised in that the interior top of rotating shaft (9) connects Air inlet pipe (8) is connected to, air inlet pipe (8) is connected with blower fan (7), the blower fan (7) is arranged at the top of aeration tank (6).