CN221876768U - Sewage treatment pool - Google Patents

Abstract

The utility model provides a sewage treatment pool, belonging to the technical field of sewage treatment; by setting a sedimentation zone, an intermediate zone, an aeration zone and a secondary sedimentation zone, and setting a sludge pipeline connected to the intermediate zone in the secondary sedimentation zone, the operation of an activated sludge method in sewage treatment is realized, and microorganisms in the activated sludge adsorb organic matter in the sewage; the sewage treatment pool of the utility model has a high removal rate of organic matter, and the aeration tank has a low impact load resistance capacity, and is suitable for treating large urban sewage treatment plants with stable influent water quality and high requirements.

Description

A sewage treatment pool

Technical Field

The utility model belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment pool.

Background Art

Wastewater treatment refers to the process of purifying wastewater to meet the water quality requirements for drainage or reuse; wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering;

Under the existing technology, the commonly used methods for sewage treatment include physical treatment and chemical treatment; physical methods include using filter materials with different pore sizes, using adsorption or barrier methods to remove impurities in the water. The most important adsorption method is adsorption with activated carbon, and the barrier method is to pass water through the filter material so that larger impurities cannot pass through, thereby obtaining cleaner water. In addition, physical methods also include sedimentation, which is to let impurities with smaller specific gravity float on the water surface and be fished out, or impurities with larger specific gravity settle below, thereby obtaining; chemical methods use various chemicals to convert impurities in the water into substances that are less harmful to the human body, or to concentrate impurities; when treating sewage, it is often necessary to spray treatment agents into the sewage pool. The existing method of using medicine generally uses a pipe placed on an opening on the pool to spray the medicine. This spray form has a slow efficiency. The treatment agent needs to be mixed slowly from the surface of the sewage to the depth, and the treatment agent cannot be quickly mixed with the sewage for disinfection, thereby reducing work efficiency; however, neither chemical methods nor physical methods can effectively remove organic matter in sewage. It often happens that due to the presence of some organic matter, the sewage pool is prone to corruption and odor, especially in summer when the temperature is high, which has an adverse effect on the treatment of sand settling and the surrounding environment; therefore, a new type of sewage treatment pool is urgently needed to regulate water quality and discharge sewage that has not been effectively treated to purify the urban environment.

Utility Model Content

The utility model aims at the problem that organic matter cannot be effectively removed in sewage treatment under the prior art, and provides a sewage treatment pool, which realizes the separation of organic matter in water by arranging sludge pipes before the secondary sedimentation zone and the aeration zone.

In order to achieve the above purpose, the technical solution adopted in this application is:

A sewage treatment tank comprises a tank body, wherein a water inlet is arranged on the left side of the tank body, a water outlet is arranged on the right side of the tank body, and the tank body comprises a primary sedimentation zone, an intermediate zone, an aeration zone and a secondary sedimentation zone; the sedimentation zone and the intermediate zone are separated by a first partition, the intermediate zone and the aeration zone are separated by a second partition, and the aeration zone and the secondary sedimentation zone are separated by a third partition; the first partition, the second partition and the third partition are all provided with water flow channels;

The primary sedimentation zone is provided with a sedimentation mechanism; the bottom of the aeration zone is fixedly installed with an aeration mechanism; the bottom of the secondary sedimentation zone is connected with a sludge pipeline; the outlet of the sludge pipeline is connected with the bottom of the intermediate zone.

Preferably, the sedimentation mechanism comprises a motor, a rotating shaft and a paddle; the motor is fixedly connected to the left side wall of the pool body via an L-shaped bracket, the rotating shaft is fixedly connected to the output end of the motor, and the paddle is fixedly mounted on the rotating shaft.

Preferably, the aeration mechanism comprises a gas delivery pipeline, an aerator and an oxygen supply aeration fan; the aerator is fixedly installed at the bottom of the aeration area, one end of the gas delivery pipeline is connected to the oxygen supply aeration fan, and the other end extends into the bottom of the aeration area and communicates with the aerator.

Preferably, an impurity outlet is also provided at the bottom of the primary precipitation zone.

Preferably, a sludge outlet is also provided on the right side of the sludge pipe.

Compared with the prior art, the advantages and positive effects of the utility model are:

The utility model discloses a sewage treatment pool, which realizes the operation of activated sludge method in sewage treatment by arranging a sedimentation zone, an intermediate zone, an aeration zone and a secondary sedimentation zone, and arranging a sludge pipe connected to the intermediate zone in the secondary sedimentation zone, so that the microorganisms in the activated sludge adsorb the organic matter in the sewage. The sewage treatment pool of the utility model has a high removal rate of organic matter, and the aeration tank has a low impact load resistance capacity, and is suitable for treating sewage treatment plants in large cities with stable influent water quality and high requirements.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

Fig. 1 is a schematic diagram of the structure of the utility model;

In the above figures, 1, tank body; 2, primary sedimentation zone; 3, intermediate zone; 4, aeration zone; 5, secondary sedimentation zone; 6, first baffle; 7, second baffle; 8, third baffle; 9, sludge pipeline; 10, motor; 11, rotating shaft; 12, paddle; 13, gas delivery pipeline; 14, aerator; 15, aeration fan; 16, impurity outlet; 17, sludge outlet.

DETAILED DESCRIPTION

In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

Embodiment 1, as shown in FIG1 , a sewage treatment pool of this embodiment, the pool body 1 is provided with a water inlet on the left side, and the pool body 1 is provided with a water outlet on the right side; the pool body 1 in this embodiment includes, from left to right, a primary sedimentation zone 2, an intermediate zone 3, an aeration zone 4, and a secondary sedimentation zone 5; the sedimentation zone 2 and the intermediate zone 3 are separated by a first partition 6, the intermediate zone 3 and the aeration zone 4 are separated by a second partition 7, and the aeration zone 4 and the secondary sedimentation zone 5 are separated by a third partition 8; the first partition 6, the second partition 7, and the third partition 8 are all provided with water flow channels;

The primary sedimentation zone 2 is provided with a sedimentation mechanism; the bottom of the aeration zone 4 is fixedly installed with an aeration mechanism; the bottom of the secondary sedimentation zone 5 is connected to a sludge pipe 9; the outlet of the sludge pipe 9 is connected to the bottom of the intermediate zone; the setting of the sludge pipe 9 allows the activated sludge to return to the sewage treatment tank before the aeration step; this is because: the degradation of organic matter by activated sludge is mainly carried out in the aeration stage, which can be divided into two stages, the adsorption stage and the stabilization stage; in the adsorption stage, it is mainly the organic matter in the sewage that is transferred to the activated sludge, which is due to the huge specific surface area of the activated sludge and the sticky substances containing polysaccharides on the surface; in the stabilization stage, it is mainly the organic matter transferred to the activated sludge that is used by microorganisms. When the organic matter in the sewage is in a suspended state and a colloidal state, the adsorption stage is very short, generally about 15 min-45 min, and the stabilization stage is longer; the use of the activated sludge method can simplify sewage pretreatment, and the removal rate of organic matter is high. It is suitable for treating large urban sewage treatment plants with stable influent water quality and high requirements;

The sedimentation mechanism comprises a motor 10, a rotating shaft 11 and a paddle 12; the motor 10 is fixedly connected to the left side wall of the tank body 1 through an L-shaped bracket, the rotating shaft 11 is fixedly connected to the motor output end, and the paddle 12 is fixedly mounted on the rotating shaft; the sedimentation mechanism is set to achieve preliminary separation of sewage and impurity particles;

The aeration mechanism includes a gas delivery pipeline 13, an aerator 14 and an oxygen supply aeration fan 15; the aerator 14 is fixedly installed at the bottom of the aeration zone, one end of the gas delivery pipeline 13 is connected to the oxygen supply aeration fan 15, and the other end extends into the bottom of the aeration zone and communicates with the aerator 14; through the aerator 14 laid at the bottom of the aeration tank, air enters the sewage in the form of fine bubbles, the purpose is to increase the dissolved oxygen content in the sewage, and also make the mixed liquid in a state of violent stirring and suspension; the dissolved oxygen, activated sludge and sewage are mixed and fully contacted with each other, so that the activated sludge reaction can proceed normally;

The aeration zone 4 is the heart of the activated sludge process. Its function is to stir the mixed liquid so that the mud and water are fully in contact and to supply oxygen to the microorganisms; to make the mud and water entering the aeration tank at the same time fully mixed and kept until they flow out of the tank, and not mixed with the mixed liquid already in the tank to avoid short circuit phenomenon, so that the wastewater entering the tank at the same time has the same aeration time; the aerator 14 refluxes the tank liquid and provides power to make the activated sludge enter the intermediate zone from the secondary sedimentation zone 5 through the sludge pipeline 9;

The bottom of the primary precipitation zone 2 is also provided with an impurity outlet 16; when in use, if impurities are found to be accumulated at the bottom of the primary precipitation zone, the switch valve on the impurity outlet 16 is opened to discharge the impurities;

The right side of the sludge pipe 9 is also provided with a sludge outlet 17; the sludge outlet is one of the ways to remove organic matter while maintaining the stable operation of the system.

The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims (5)

1. The sewage treatment tank comprises a tank body (1), wherein a water inlet is formed in the left side of the tank body (1), and a water outlet is formed in the right side of the tank body (1), and the sewage treatment tank is characterized in that the tank body (1) comprises a primary sedimentation zone (2), a middle zone (3), an aeration zone (4) and a secondary sedimentation zone (5); the sedimentation zone (2) and the middle zone (3) are separated by a first partition board (6), the middle zone (3) and the aeration zone (4) are separated by a second partition board (7), and the aeration zone (4) and the secondary sedimentation zone (5) are separated by a third partition board (8); the first partition board (6), the second partition board (7) and the third partition board (8) are provided with water flow channels;

the primary sedimentation zone (2) is provided with a sedimentation mechanism; an aeration mechanism is fixedly arranged at the bottom of the aeration zone (4); the bottom of the secondary sedimentation zone (5) is communicated with a sludge pipeline (9); and the outlet of the sludge pipeline (9) is communicated with the bottom of the middle zone.

2. A wastewater treatment tank according to claim 1, characterized in that the sedimentation mechanism comprises a motor (10), a rotation shaft (11) and paddles (12); the motor (10) is fixedly connected with the left side wall of the tank body (1) through an L-shaped support, the rotating shaft (11) is fixedly connected with the output end of the motor, and the paddles (12) are fixedly installed on the rotating shaft.

3. A sewage treatment tank according to claim 1, wherein the aeration mechanism comprises a gas delivery pipe (13), an aerator (14) and an oxygen supply aeration fan (15); the aerator (14) is fixedly arranged at the bottom of the aeration zone, one end of the gas conveying pipeline (13) is connected with the oxygen supply aeration fan (15), and the other end of the gas conveying pipeline stretches into the bottom of the aeration zone to be communicated with the aerator (14).

4. A wastewater treatment tank according to claim 1, characterized in that the bottom of the primary sedimentation zone (2) is further provided with an impurity outlet (16).

5. A sewage treatment tank according to claim 1, characterized in that the right side of the sludge pipe (9) is also provided with a sludge outlet (17).