CN210065324U

CN210065324U - Water dispersing equipment

Info

Publication number: CN210065324U
Application number: CN201821984497.5U
Authority: CN
Inventors: 黄华军; 杨慧
Original assignee: Hunan Tianyi Environmental Protection Technology Co Ltd
Current assignee: Hunan Tianyi Environmental Protection Technology Co Ltd
Priority date: 2018-11-29
Filing date: 2018-11-29
Publication date: 2020-02-14
Anticipated expiration: 2028-11-29

Abstract

The utility model discloses a water dispersing equipment, including the plate body, suspend in midair the person in charge that sets up from plate body top downwardly extending, be responsible for the open-top, be equipped with the branch pipe on being responsible for the lateral wall, the branch pipe communicates with being responsible for, and it has a plurality of apertures to open on every branch pipe lateral wall. The utility model discloses a further improvement of going on traditional water distribution board basis, the purpose is in order to be applied to behind the sewage treatment device, can be better break up liquid, form tiny liquid drop to can increase the specific surface area with the air contact, increase dissolved oxygen volume, play crucial effect at nature oxygenation in-process.

Description

Water dispersing equipment

Technical Field

The utility model belongs to the sewage treatment technology, concretely relates to water dispersing equipment is particularly useful for rural family domestic sewage treatment.

Background

In recent years, with the development of economy, the discharge amount of domestic sewage in rural areas is increased, but the construction of corresponding sewage treatment facilities cannot keep pace with the development speed of economy. According to the reckoning, the total amount of domestic sewage generated in rural areas is about 90 hundred million tons, and the problems of serious pollution of rivers, lakes and underground water in rural areas, water eutrophication and the like are more and more serious due to continuous increase of the domestic sewage.

The existing distributed sewage treatment system is mainly buried integrated treatment equipment, and the following problems generally exist:

(1) unreasonable technical route and deviation from actual rural conditions

Although all domestic sewage is used, the rural area is different from the city, the population scale of the rural area is small, the living is dispersed, the sewage water quantity is small, the daily change coefficient is large, and the difference of the water quality and the water quantity along with the region is large, so that the design and selection experience of the urban sewage treatment project cannot be carried in the rural domestic sewage treatment project. If rural sewage is treated as a small-scale urban sewage treatment project, the project cannot be operated or can be stably operated for a long time after being built. According to the local conditions, simple, economic and effective treatment technologies are selected through technical and economic analysis and comparison according to the functions, population, landform, geological characteristics, climate, emission requirements, economic level and the like of the village.

(2) The design and treatment scale is overlarge, and the actually collected sewage quantity is very small

The residential population of rural areas is often greatly changed, which is reflected in the phenomenon that young people go out to be in service, so that the sewage production is inconsistent with the residential population, and the seasonal change of the sewage flow is particularly obvious. Most villagers use well water, a kitchen and a toilet do not have complete water pools and sewer pipelines, and the washed water is sprayed on courtyards or roadside, so that collection is difficult, and the design scale of a sewage treatment station is influenced. However, in the actual design, the design unit or designer does not consider the actual situation, which results in the design scale of certain rural domestic sewage treatment projects far exceeding the local actual sewage production, the ultra-low load operation or even intermittent operation of sewage treatment plants (stations), and no good environmental benefit and economic benefit are obtained.

(3) Unqualified construction quality

Most rural domestic sewage treatment projects are small in scale, and participation willingness of large construction enterprises with high qualification is not high, so that actual construction team levels of the rural domestic sewage projects are uneven, the project quality is unqualified, and structures and equipment are seriously leaked, overflowed and dripped, and project operation is directly influenced.

(4) High power consumption, large workload of operation and maintenance, and difficult guarantee of long-term effective operation

Most of the integrated equipment adopts more electromechanical equipment, including sewage pump, sludge pump, aerator, submersible mixer, etc., and these equipment have high power consumption and high operation and maintenance requirements. Professional operation and maintenance personnel are lacked in rural areas. Meanwhile, the operation and maintenance cost is not in place, so that some facilities cannot normally operate basically after being built, and are only started during inspection. Therefore, the maintenance of the treatment facilities is very important, and the operation supervision policy of the rural sewage treatment facilities should be made as soon as possible so that the sewage treatment facilities can operate normally.

From the above analysis, it can be known that the current urban sewage treatment technology can reach the effluent standard, but the sewage treatment cost is high, and the technology is not suitable for rural areas. Therefore, the current sewage treatment technology with low development investment and low operation cost becomes the key of the current rural sewage treatment development.

In parts of sewage treatment equipment, water distribution plates are often used, are mainly used for uniform water distribution, have poor water dispersion effect and are not suitable for certain specific working conditions requiring the increase of dissolved oxygen.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present invention is directed to a water dispenser capable of dispersing liquid into small droplets to increase the dissolved oxygen.

The utility model provides a technical scheme of problem is: the water dispersing equipment comprises a plate body, a main pipe and a plurality of small holes, wherein the main pipe is extended downwards from the top of the plate body and suspended, the top of the main pipe is open, branch pipes are arranged on the side walls of the main pipe and communicated with the main pipe, and the side walls of each branch pipe are provided with the small holes.

The function of the water dispersing device is to disperse the liquid into small liquid drops.

Furthermore, a plurality of water distribution holes are arranged on the plate body. The plate body with the water distribution holes is like a water distribution plate in the prior art, and can uniformly distribute liquid.

Preferably, the branch pipes are uniformly distributed on the side wall of the main pipe.

Further, the branch pipes are arranged in a spiral winding mode around the side wall of the main pipe along the axis of the main pipe.

The uniform distribution mode is to make scattered small liquid drops spread more uniformly.

Preferably, the main pipe is closed at the bottom.

Preferably, the end of the branch pipe remote from the main pipe is closed.

The utility model discloses a further improvement of going on traditional water distribution board basis, the purpose is in order to be applied to behind the sewage treatment device that the embodiment mentioned, can be better break up liquid, form tiny liquid drop to can increase with the specific surface area of air contact, increase dissolved oxygen volume. It can be said that the utility model discloses a water dispersing equipment is the spare part to this kind of sewage treatment device research and development especially, has played crucial effect in the natural oxygenation in-process.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a water dispersing device.

Fig. 2 is a structural plan view of the water dispersing device.

FIG. 3 is a schematic view of the vertical surface of the sewage treatment apparatus of the present invention.

FIG. 4 is a top view of the water distribution plate structure.

FIG. 5 is a flow chart of a sewage treatment process.

In the figure: 1-regulating tank, 2-primary anaerobic tank, 3-secondary anaerobic tank, 4-aerobic tank, 5-sedimentation tank, 6-conveying device, 7-covering plate, 8-ventilating pipe, 9-water dispersing device, 10-sludge return pipe, 21-first overflow channel, 31-second overflow port, 32-first water inlet channel, 41-second overflow channel, 51-second water inlet channel, 52-water outlet pipe, 61-output pipeline, 91-water distribution plate, 92-water dispersing device, 921-plate body, 922-water distribution hole, 923-main pipe, 924-branch pipe and 925-small hole.

Detailed Description

For convenience of description, the description of the relative position of the components (e.g., up, down, left, right, etc.) is described with reference to the layout direction of the drawings, and does not limit the structure of the patent.

As shown in fig. 1-2, a water dispersing device includes a plate 921, and a main tube 923 extending downward from the top of the plate 921 and suspended. The main tube 923 is open at the top. The branch pipe 924 is provided on the side wall of the main pipe 923. The branch pipes 924 communicate with the main pipe 923. A plurality of apertures 925 are formed in the side wall of each branch 924. A plurality of water distribution holes 922 are formed in the plate body 921. The branch pipes 924 are uniformly distributed on the side wall of the main pipe 923. The branch tubes 924 are arranged along the axis of the main tube 923 in a spiral winding pattern around the side wall of the main tube 923.

The main pipe 923 is closed at the bottom. The end of the branch pipe 924 far away from the main pipe 923 is closed.

In the following, the application of the water dispersing device of the present invention to a specific sewage treatment device is exemplified for detailed explanation:

as shown in figures 1-4, a sewage treatment device comprises a regulating tank 1, a primary anaerobic tank 2, a secondary anaerobic tank 3, an aerobic tank 4 and a sedimentation tank 5. The adjusting tank 1 is arranged on one side of the primary anaerobic tank 2.

The device also comprises a conveying device 6 which can convey the sewage in the adjusting tank 1 to the bottom of the primary anaerobic tank 2.

The second-stage anaerobic tank 3 is arranged right above the first-stage anaerobic tank 2. The top of the primary anaerobic tank 2 extends upwards to form a first overflow channel 21. The bottom of the second-stage anaerobic tank 3 is provided with a first water inlet channel 32. The upper end of the first water inlet channel 32 extends up to the same height as the top of the first overflow channel 21. And the first overflow port at the top of the first overflow channel 21 is communicated with the upper end of the first water inlet channel 32. The connecting position of the first overflow port and the first water inlet channel 32 is as high as the second overflow port 31 of the second-stage anaerobic pool 3. The sewage in the first-stage anaerobic tank 2 can only flow into the bottom of the second-stage anaerobic tank 3 in a single direction.

The scheme shows the position relation and the connection state of the primary anaerobic tank 2 and the secondary anaerobic tank 3. The sewage of the adjusting tank 1 is continuously input into the first-stage anaerobic tank 2, the water level in the first-stage anaerobic tank 2 rises to enter the first overflow channel 21, the first water inlet channel 32 flows to reach the bottom of the second-stage anaerobic tank 3 after exceeding the first overflow port, and the water level of the second-stage anaerobic tank 3 falls to the aerobic tank 4 after reaching the second overflow port 21.

The secondary anaerobic tank 3 is positioned above the primary anaerobic tank 2, and is not arranged side by side like the traditional structure, so that the structure is compact, and more importantly, the height difference between the secondary anaerobic tank and the aerobic tank 4 can be manufactured while the structure is compact.

The conveying device 6 is a lift pump arranged in the regulating reservoir 1. The output pipe 61 of the lift pump winds into the first overflow channel 21 and extends and is inserted into the bottom of the primary anaerobic tank 2. The pipeline output port of the lift pump is arranged at the bottom of the primary anaerobic tank 2. Meanwhile, a liquid level control valve can be arranged in the regulating tank 1, and when the water level in the regulating tank 1 rises to a set height, the lift pump is automatically started.

Considering that the runoff on the ground and sundries can enter the adjusting tank 1, the top of the adjusting tank 1 is provided with a cover plate 7.

The aerobic tank 4 is arranged right above the sedimentation tank 5. A second overflow channel 41 extends upwards from the bottom of the aerobic tank 4. The top of the sedimentation tank 5 extends upwards to form a second water inlet channel 51. The upper end of the second overflow path 41 extends upward to be equal to the top of the second water inlet path 51. And the top of the second overflow path 41 is communicated with the upper end of the second water inlet path 51. The height of the communicating part is equal to the liquid level of the aerobic tank 4. The top of the sedimentation tank 5 is provided with a water outlet pipe 52. The height of the water outlet pipe 52 is equal to the height of the liquid level of the aerobic tank 4. The sewage in the aerobic tank 4 can only flow into the sedimentation tank 5 in one direction.

The scheme shows the position relation and the connection state of the aerobic tank 4 and the sedimentation tank 5. The sewage falling from the secondary anaerobic tank 3 enters the aerobic tank 4, the water level of the aerobic tank 4 rises continuously, and the sewage flows into the second water inlet channel 51 to enter the sedimentation tank 5 after the water level rises to the top of the second overflow channel 41.

In the prior art, the outlet pipe 52 of the sedimentation tank 5 has no setting requirement, and the preferred scheme makes the requirement on the height of the outlet pipe and is determined by the structural arrangement of the outlet pipe. If the height of the water outlet pipe 52 of the sedimentation tank 5 is too low, the water pressed into the sedimentation tank in the aerobic tank 4 is more and faster according to the principle of a communicating vessel, if the amount of the sewage falling into the secondary anaerobic tank 3 is less than the amount of the sewage entering the sedimentation tank 5 from the aerobic tank 4, the liquid level of the aerobic tank 4 is liable to be lowered too much, the whole sewage treatment link is likely to be interrupted at the position of the aerobic tank 4, and therefore, the height of the water outlet is further designed.

The sedimentation tank 5 is positioned at the other side of the first-stage anaerobic tank 2, and the sedimentation tank 5 is an inclined tube sedimentation tank. The bottom of the sedimentation tank of this embodiment is provided with a sludge discharge pipe, as in the conventional sedimentation tank.

And a second overflow port 31 is arranged at the top of the second-stage anaerobic tank 3. The second overflow port 31 is positioned above the aerobic tank 4, and a height difference exists between the second overflow port 31 and the aerobic tank 4. Preferably, the height difference between the second overflow port 31 and the aerobic tank 4 is more than 1.2 m. The larger the height difference is, the more dissolved oxygen is brought in the falling process of the sewage.

And the top of the second-stage anaerobic tank 3 and the right upper part of the aerobic tank 4 are respectively provided with a cover plate 7. An oxygen increasing device is arranged between the cover plate 7 and the liquid level of the aerobic tank 4. The oxygenation device is a ventilation pipe 8 inserted in the cover plate 7. The upper end of the ventilation pipe 8 is communicated with the outside, and the lower end is positioned right above the aerobic tank 4.

The cover 7 is also designed to take into account the possibility of rain and debris entering the pool, and also for better aesthetics. The design based on this thinking has a new technical problem: after the upper part of the aerobic tank 4 is closed, the aerobic tank cannot be communicated with the outside, and the sewage falls to dissolve oxygen. Therefore, the design of the oxygen increasing device is considered.

Oxygenation device is numerous on the market, can directly adopt the oxygen-increasing machine, the air-blower, the aeration machine etc., but consider the operation maintenance cost, and the scope of using is small-scale rural family, the structure that has adopted is simpler, the ventilation pipe facility that the cost is lower, when sewage falls, stir and can cause the air to flow in aerobic tank 4 top, partial air is dissolved and gets into in aerobic tank 4, aerobic tank 4 top forms the negative pressure, outside air passes through the continuous enclosure space that gets into aerobic tank 4 top of ventilation pipe 8, thereby realize the process of natural oxygenation.

A water dispersing device 9 which can uniformly distribute and disperse the sewage falling from the second overflow port 31 is arranged between the second overflow port 31 and the top of the aerobic tank 4 and is positioned right above the aerobic tank 4. The water dispersing device 9 is used for uniformly distributing the falling sewage and then dispersing the sewage into small liquid drops, so that the liquid can be well dispersed to form small liquid drops, the specific surface area of contact with air is increased, and the dissolved oxygen is increased.

The water dispersing device 9 comprises a water distribution plate 91 and two sets of water dispersing equipment 92. The water dispersing equipment 92 is positioned right below the water distribution plate 91 and is arranged at intervals in layers.

The water distribution plate 91 is a common device in the prior art. The water dispersing equipment 92 is the newly designed equipment of the utility model, and the action principle is that the liquid flows into the main pipe 923 and then disperses into the branch pipe 924, and after passing through the small hole 925 of the branch pipe 923, the liquid becomes small liquid drops. Of course, some water may also fall from the water distribution holes 922.

The number of the ventilation pipes 8 is three. The ventilation ducts 8 are not exactly the same length. The depths of the downward-probing positions of the lower ends of different ventilation pipes 8 are different. The lower end of the ventilation pipe 8 is arranged between the cover plate 7 and the water distribution plate 91, between the water distribution plate 91 and the first set of water dispersing equipment 92, and between the first set of water dispersing equipment 92 and the second set of water dispersing equipment 92.

The above further improved scheme shows that the position relationship between the ventilation pipe 8 and the water dispersing device 9 is a more refined adjustment of the dissolved oxygen process, so that the lower end of the ventilation pipe 8 reaches each space needing oxygen, and sufficient oxygen is guaranteed to be provided in each layer, thereby guaranteeing the dissolved oxygen.

A sludge return pipe 10 is arranged at the bottom of the aerobic tank 4. One end of the sludge return pipe 10 is communicated with the aerobic tank 4, and the other end is communicated with the adjusting tank 1. The sludge return pipe 10 is provided with a throttle valve. The bottom height of the aerobic tank 4 is higher than the top height of the adjusting tank 1, so that pressure difference natural reflux can be formed.

After the running time is long, part of sludge is inevitably deposited at the bottom of the aerobic tank 4, a sludge return pipe 10 is designed, a throttle valve is opened periodically or is adjusted to keep a reasonable opening degree, and the deposited sludge is discharged into the adjusting tank 1 for recycling decontamination. Design mud back flow pipe 10 another effect is when the choke valve maintains a reasonable aperture, can guarantee reasonable backward flow, forms an inner loop treatment process, and the benefit has increased the number of times that sewage passes through oxygenation device to dissolved oxygen volume has been improved, the efficiency of getting rid of pollutants such as nitrogen phosphorus has also been increased. In a word, a controllable state of internal circulation is formed in the equipment, the capability of adapting to water quality fluctuation of the sewage treatment equipment is provided, and a good treatment effect is ensured.

The sewage treatment equipment of the embodiment is applied to rural family domestic sewage treatment, and the application conditions are as follows:

the project overview is that the domestic sewage treatment project of rural families in a certain place is 2.0m³Application demonstration project of/d micro domestic sewage treatment equipment (60 households).

Water quality of inlet water: chemical oxygen demand COD: 260mg/L, BOD₅120mg/L, suspended matter SS 70mg/L, total nitrogen 35mg/L and total phosphorus 3 mg/L.

And (3) effluent quality: chemical oxygen demand COD < 70mg/L, biochemical oxygen demand BOD₅Less than 15mg/L, suspended matter SS less than 20mg/L, total nitrogen less than 12mg/L and total phosphorus less than 0.4 mg/L.

The anaerobic tank is the same as the traditional anaerobic tank and the aerobic tank, the filler and anaerobic microorganisms are arranged in the primary anaerobic tank 2 and the secondary anaerobic tank 3, the filler and the aerobic microorganisms are added into the aerobic tank 4, and substances such as BOD, COD, nitrogen, phosphorus and the like are removed through comprehensive treatment.

The process flow is shown in figure 5, the rural household domestic sewage firstly flows into the regulating tank 1, when the water level rises to a set height, the lift pump is automatically started, the sewage is conveyed to the primary anaerobic tank 2, and the sewage enters the secondary anaerobic tank 3 after being treated for 10 hours.

The area above the aerobic tank 4 is a natural oxygenation area, and sewage falls from a high place to cause air flow, so that the ventilation pipe 8 generates an air suction phenomenon, the sewage is dispersed into small liquid drops under the action of the water dispersing equipment 92 after being distributed by the water distribution plate 91, the small liquid drops are contacted with air conveyed by the ventilation pipe 8, and oxygen is absorbed and dissolved into the liquid drops to complete the natural oxygenation process.

The sewage after oxygenation enters an aerobic tank 4, a large amount of biological films are attached to the surface of the filler in the tank, the pollutants in the sewage are absorbed and decomposed by the microorganisms in the biological films to complete the purification of the sewage, and then the sewage enters a sedimentation tank 5 to be precipitated and then is discharged.

On one hand, the sludge in the sedimentation tank 5 periodically flows to the regulating tank 1 through a sludge return pipe 10 by utilizing liquid level difference, and then the mixed sludge is conveyed to the anaerobic tank through a lift pump for the next denitrification and dephosphorization cycle. On the other hand, the sludge amount of the sedimentation tank 5 is relatively small, and the sludge can be discharged and mixed with farmyard manure for fertilization.

The sewage treatment process is similar to the traditional process, and is different from the traditional technology in that the height difference between the secondary anaerobic tank 3 and the aerobic tank 4 is artificially manufactured without adopting an aerator, natural oxygenation is realized by utilizing the natural falling process of the sewage, air flow is caused in the falling process of the sewage from a high place, the sewage is contacted with the air, oxygen is dissolved in liquid, and the natural oxygenation is completed, so that the oxygenation process of the aerator is replaced. The scheme has no equipment with high power consumption, has low operation and maintenance requirements, and is suitable for small-sized sewage treatment, in particular for domestic sewage treatment in rural families. And because the rural domestic sewage treatment capacity is small, agents (bleaching powder, precipitator and the like) are not required to be added like large-scale sewage treatment, and secondary pollution is not generated.

Although the adjusting tank, the primary anaerobic tank, the secondary anaerobic tank, the aerobic tank and the sedimentation tank are all traditional tanks, the position structure is optimized, so that the treatment process is different from the traditional treatment process. The utility model discloses overall arrangement correlation between each pond, the influence of mutually coordinating, the ring is buckled closely to make except that the effect of elevator pump intervenes, almost lean on the natural process to have moved whole sewage treatment process completely, need not to introduce other equipment almost. The design is wonderful in that the adjustment of the layout, the principle of the communicating vessels and the application of potential energy are combined.

The concrete effects are as follows:

1. the natural water drop and natural oxygen increasing technology is adopted, an aerator is omitted, the electromechanical equipment of the whole system is only provided with a small lifting pump, and the power consumption of sewage treatment is greatly reduced.

2. The system has less sludge amount, total nitrogen and total phosphorus are removed by adopting a sludge backflow mode, and the discharged sludge can be mixed with the agricultural fertilizer for fertilization, so that the resource utilization of the nitrogen and the phosphorus can be realized.

3. The treatment equipment can be placed on the ground, the water level difference is fully utilized to distribute water, oxygen amount higher than 2.5mg/L can be obtained in a water drop oxygenation area, and the requirement of aerobic treatment is met.

4. The sewage treatment does not need to add chemicals, and does not produce secondary pollution.

5. The household is used as a unit for sewage treatment, the sewage is collected nearby, the collecting pipeline is short, the treatment efficiency is high, and the actual requirements of rural sewage treatment are met.

Claims

1. A water dispersal device, characterized by: the plate comprises a plate body (921) and a main pipe (923) extending downwards from the top of the plate body (921) and suspended, wherein the top of the main pipe (923) is open, a branch pipe (924) is arranged on the side wall of the main pipe (923), the branch pipe (924) is communicated with the main pipe (923), and a plurality of small holes (925) are formed in the side wall of each branch pipe (924); the branch pipe (924) is arranged along the axis of the main pipe (923) and around the side wall of the main pipe (923) in a spiral winding mode.

2. The water dispersal device as defined in claim 1, wherein: a plurality of water distribution holes (922) are arranged on the plate body (921).

3. The water dispersal device as defined in claim 1, wherein: the branch pipes (924) are uniformly distributed on the side wall of the main pipe (923).

4. The water dispersal device as defined in claim 1, wherein: the bottom of the main pipe (923) is closed.

5. The water dispersal device as defined in claim 1, wherein: the end, far away from the main pipe (923), of the branch pipe (924) is closed.