CN217025498U

CN217025498U - Rural sewage treatment device of improvement type AO integration

Info

Publication number: CN217025498U
Application number: CN202220083849.XU
Authority: CN
Inventors: 张桃群; 程大龙; 刘晓钢
Original assignee: Guangdong Huixiang Environmental Technology Co ltd
Current assignee: Guangdong Huixiang Environmental Technology Co ltd
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-07-22
Anticipated expiration: 2032-01-13

Abstract

The utility model relates to the field of wastewater treatment, in particular to improved A/O integrated rural sewage treatment equipment, which has the technical scheme that: comprises a box body, an artificial grid and a micro-nano bubble generator. And water inlet and outlet pipes are respectively arranged at two ends of the box body. The box is divided into a plurality of cavities, namely a primary sedimentation tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank, wherein the plurality of partition plates are arranged in the box at intervals, the primary sedimentation tank, the anoxic tank, the aerobic tank and the secondary sedimentation tank are sequentially arranged, and water through holes are respectively formed in the partition plates. A grating groove is arranged in the primary sedimentation tank, and the artificial grating is arranged in the primary sedimentation tank through the grating groove. The number of the micro-nano bubble generators is two, and the micro-nano bubble generators are respectively arranged in the anoxic tank and the aerobic tank. According to the utility model, the plurality of cavities are arranged to sequentially remove waste in the sewage and are matched with the micro-nano bubble generator, so that the pollutant removal load of the system is improved, and the use amount of other chemicals and the investment of equipment can be reduced.

Description

Rural sewage treatment device of improvement type AO integration

Technical Field

The utility model relates to the field of wastewater treatment, in particular to improved A/O integrated rural sewage treatment equipment.

Background

With the rapid development of the economy of China, the living standard of rural residents in China is greatly improved. Rural water supply business is continuously developed, rural domestic drainage is continuously increased due to popularization of sanitary facilities such as showers, washing machines, toilets and the like, at present, most rural areas in China do not have perfect sewage collecting and treating facilities, a large amount of untreated sewage is directly discharged and becomes an important pollution source of regional water environment, sewage receiving bodies and soil are greatly polluted, and underground water safety and body health of rural residents can be seriously threatened. Compared with urban sewage, rural domestic sewage in China has the characteristics of wide dispersion, multiple sources, complex sewage components, large water quality and water quantity change and the like, and the characteristics require that rural domestic sewage treatment cannot directly move the urban sewage treatment technology, so that a treatment method suitable for rural characteristics must be established. Compared with a large-scale traditional sewage treatment system, the integrated rural sewage treatment equipment which has the advantages of low investment, less energy consumption, high treatment efficiency, small occupied area, convenient management and the like is more in line with the national conditions and development situation of China.

At present, the rural decentralized sewage treatment technologies mainly comprise: artificial wetlands, biological membranes, biological contact oxidation and the like, and the above technologies have advantages and disadvantages respectively. But the general disadvantages are: leakage, blockage, high construction cost, high operating cost, unstable effluent quality and the like. These problems have resulted, mainly in the absence of a reasonable choice of materials and processes. In addition, the traditional A/O sewage treatment process is difficult to culture sludge with unique functions, and has the problems of low degradation rate of refractory substances, low nitrogen and phosphorus removal efficiency and the like.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide improved A/O integrated rural sewage treatment equipment which has the advantages of high-efficiency denitrification, improvement of material degradation rate and reduction of chemical dosage.

The technical purpose of the utility model is realized by the following technical scheme: an improved A/O integrated rural sewage treatment device comprises a box body, an artificial grid and a micro-nano bubble generator;

water inlet and outlet pipes are respectively arranged at two ends of the box body;

a plurality of partition plates are arranged in the box body at intervals, the box body is divided into a plurality of cavities, namely a primary sedimentation tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank, the tops of the cavities are respectively provided with a manhole, and the partition plates are respectively provided with a water through hole;

a grating groove is arranged in the primary sedimentation tank, and the artificial grating is arranged in the primary sedimentation tank through the grating groove;

the micro-nano bubble generators are arranged in the anoxic tank and the aerobic tank respectively, the micro-nano bubble generators are provided with air pipes respectively, and one ends of the air pipes extend out of the manholes on the corresponding sides of the micro-nano bubble generators respectively.

In one embodiment, the water through hole between the anoxic tank and the aerobic tank is arranged on the lower side of the partition plate.

In one embodiment, the artificial grating is arranged obliquely.

In one embodiment, a return pipe is arranged on the side wall of the box body and is used for communicating the anoxic tank with the aerobic tank.

In one embodiment, a support is arranged in the secondary sedimentation tank, an inclined plate is arranged on the support, the upper end of the inclined plate inclines towards the direction of the aerobic tank, and the inclined plate is fixedly connected with the box body through round steel.

In one embodiment, the inclined plates are arranged on the bracket at intervals.

Above-mentioned rural sewage treatment device of improvement type AO integration has following beneficial effect:

firstly, the arrangement of the plurality of cavities sequentially removes the wastes in the sewage and is matched with the micro-nano bubble generator, so that the pollutant removal load of the system is improved, particularly the advantage of the removal rate of pollutants such as total nitrogen, total phosphorus and the like is obvious, the phosphorus effect is excellent, and the consumption of other chemicals and the investment of equipment can be reduced; micro-nano bubble reinforcing microorganism activity improves the microorganism metabolism for the pollutant degradation is fast, thereby forces the microorganism to get into endogenous metabolism, so can play the effect of subducing of certain degree to mud, reduces system's mud discharge, alleviates system's operating pressure.

Secondly, the utility model can be placed on the ground or underground, has high integration degree, small occupied area, low investment cost and low maintenance cost, and is suitable for rural area economy. The method can solve the problem of up-to-standard treatment and discharge of the current rural sewage, fully considers the requirements of sewage treatment and reuse in the future, saves water resources, protects water environment, and promotes the social and economic development of rural areas to be coordinated with resources and environment.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the structure of the present invention;

fig. 3 is a flow chart of the operation of the present invention.

In the figure: 1. a box body; 2. artificial grilles; 3. a micro-nano bubble generator; 4. a water pipe; 5. a primary sedimentation tank; 6. an anoxic tank; 7. an aerobic tank; 8. a secondary sedimentation tank; 9. a manhole; 10. water passing holes; 11. an air tube; 12. a return pipe; 13. a support; 14. a sloping plate.

Detailed Description

The utility model is described in detail below with reference to the figures and examples.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

An improved A/O integrated rural sewage treatment device is shown in figures 1 and 2 and comprises a box body 1, an artificial grid 2 and a micro-nano bubble generator 3. The two ends of the box body 1 are respectively provided with a water inlet and outlet pipe 4. The interval is equipped with a plurality of baffles in the box 1, separates box 1 for a plurality of cavitys, is just sinking pond 5, oxygen deficiency pond 6, good oxygen pond 7 and two heavy ponds 8 in proper order, and the hole 10 of crossing between oxygen deficiency pond 6 and the good oxygen pond 7 sets up in the downside of baffle, and manhole 9 has been seted up respectively at the top of a plurality of cavitys, is equipped with the water hole 10 of crossing on the baffle respectively. A return pipe 12 is arranged on the side wall of the box body 1 and is used for communicating the anoxic tank 6 and the aerobic tank 7. A grating groove is arranged in the primary sedimentation tank 5, and the artificial grating 2 is arranged in the primary sedimentation tank 5 through the grating groove. The two micro-nano bubble generators 3 are respectively arranged in the anoxic tank 6 and the aerobic tank 7, the two micro-nano bubble generators are respectively provided with an air pipe 11, and one end of each air pipe 11 extends out of a manhole 9 on the corresponding side of each air pipe.

After entering the box body 1 from the water pipe 4, sewage firstly enters the grating grooves, and floating objects and suspended matters in the sewage, such as fibers, hairs, fruit peels, vegetables, plastic products and the like, are intercepted by the artificial grating 2, so that pipelines and subsequent treatment equipment are prevented from being blocked, and the normal operation of the subsequent equipment is ensured;

the sewage filtered by the artificial grating 2 is primarily precipitated in a primary precipitation tank 5, so that the particle size of the sewage is more than 2mm, and the density is more than 2.65t/m³The sand grains and suspended matters in the water are left in the primary sedimentation tank 5;

the sewage well water passing holes 10 after the preliminary sedimentation enter the anoxic tank 6, and the heterotrophic denitrifying bacteria reduce and convert nitrate nitrogen and nitrite nitrogen in the returned sewage into nitrogen gas in the anoxic environment of the sewage in the anoxic tank 6; meanwhile, the phosphorus accumulating bacteria can be promoted to decompose polyphosphate in vivo into phosphate and release the phosphate into water under the anoxic environmental condition, the released energy is used for absorbing organic acid in sewage and forming poly beta-hydroxybutyrate (PHB) to be stored in cells, a condition is created for excessive phosphorus uptake under the aerobic condition in a reaction zone, the micro-nano bubble generator 3 improves the microbial activity, provides a suitable growth environment for denitrifying phosphorus accumulating bacteria, and improves the phosphorus removal efficiency.

Sewage treated in the anoxic tank 6 enters the aerobic tank 7 through the water holes 10, nitrifying bacteria in the aerobic tank 7 carry out nitrification reaction under aerobic conditions, nitrite bacteria convert ammonia nitrogen in the sewage into nitrite nitrogen, and the nitrifying bacteria convert the nitrite nitrogen into nitrate nitrogen; part of nitrate nitrogen flows back to the anoxic tank 6 through a return pipe 12 on the side; the micro-nano bubble generator 3 is arranged at the front end of the aerobic tank 7, so that dissolved oxygen in water can be improved, and oxygen transfer efficiency is improved; in an aerobic environment, the phosphorus accumulating bacteria mainly rely on poly beta-hydroxybutyrate (PHB) stored in a decomposer to obtain energy for self growth and propagation, simultaneously, the super-absorbed soluble phosphorus in water is stored in the body in the form of polyphosphate, and sludge with high phosphorus content is separated from water through precipitation so as to achieve the effect of phosphorus removal;

the sewage treated in the aerobic tank 7 enters a secondary sedimentation tank 8 for secondary sedimentation to separate sludge from water, the mixed liquid is clarified, and the supernatant flows out from the water pipe 4.

Preferably, the artificial grid 2 is arranged inclined with an inclination of 60 °. Reduce the impact force when sewage gets into, improve the filter effect.

Preferably, a bracket 13 is arranged in the secondary sedimentation tank 8, a plurality of inclined plates 14 are arranged on the bracket 13 at intervals, and the inclination angles of the inclined plates 14 are 45-60 degrees. The upper end of the inclined plate 14 inclines towards the direction of the aerobic tank 7 and is fixedly connected with the box body 1 through round steel. When sewage enters the secondary sedimentation tank 8, on the basis of gravity separation, residual sludge with large specific gravity is sunk to the bottom of the tank through the inclined plate, and the separation efficiency of sludge and clear liquid is improved.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the utility model, and these changes and modifications are all within the scope of the utility model. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an rural sewage treatment device of improvement type AO integration which characterized in that: comprises a box body, an artificial grid and a micro-nano bubble generator;

micro-nano bubble generator has two, set up respectively in the oxygen deficiency pond with in the aerobic tank, two be equipped with the trachea on the micro-nano bubble generator respectively, tracheal one end stretches out its corresponding side respectively the manhole.

2. The rural sewage treatment device of improvement type A/O integration of claim 1, characterized in that: the water passing hole between the anoxic tank and the aerobic tank is arranged on the lower side of the partition plate.

3. The improved A/O integrated rural sewage treatment equipment of claim 1, wherein: the artificial grating is obliquely arranged.

4. The improved A/O integrated rural sewage treatment equipment of claim 1, wherein: and a return pipe is arranged on the side wall of the box body and is used for communicating the anoxic tank and the aerobic tank.

5. The rural sewage treatment device of improvement type A/O integration of claim 1, characterized in that: a support is arranged in the secondary sedimentation tank, an inclined plate is arranged on the support, the upper end of the inclined plate inclines towards the direction of the aerobic tank, and the inclined plate is fixedly connected with the box body through round steel.

6. The rural sewage treatment plant of improvement type A/O integration of claim 5, characterized in that: the inclined plates are arranged on the bracket at intervals.