CN214457495U

CN214457495U - Self-maintenance sewage treatment integrated equipment

Info

Publication number: CN214457495U
Application number: CN202120112885.XU
Authority: CN
Inventors: 李志华; 高兴东; 季洋; 赵爱华; 陈善平
Original assignee: Shanghai Environmental Sanitation Engineering Design Institute Co ltd; Xian University of Architecture and Technology
Current assignee: Shanghai Environmental Sanitation Engineering Design Institute Co ltd; Xian University of Architecture and Technology
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-10-22
Anticipated expiration: 2031-01-15

Abstract

The utility model discloses a self-maintenance sewage treatment integrated device, which comprises a filter bed inside a reactor main body, and a water inlet pipe and a siphon water outlet pipe which extend into the lower part of the filter bed, wherein the water inlet pipe is communicated with an air stripping return pipe, the end part of the pipe orifice of the air stripping return pipe is communicated with an inverted cone tank body, the inverted cone tank body vertically divides the reactor main body below the filter bed into a settling zone and an aerobic zone, the aerobic zone is internally provided with an anoxic zone which is separated by an anoxic denitrification tank, the upper part of the anoxic denitrification tank is communicated with the water inlet pipe, and the bottom of the anoxic zone is provided with an anoxic zone water outlet; the bottom of the reactor main body is provided with a sludge discharge pipe. The utility model has compact structure, three areas are nested layer by layer, the volume utilization rate is improved, the heat dissipation is reduced, and the low-temperature treatment effect is enhanced; the filter bed is back-flushed by siphon drainage, so that the dry-wet alternate operation of the filter bed is realized, the pumpless backflow of nitrifying liquid and sludge is realized, and the operation and maintenance cost is reduced; the siphon drainage operation mode improves the shock resistance of the system, has self-maintenance capability and can realize unattended operation.

Description

Self-maintenance sewage treatment integrated equipment

Technical Field

The utility model belongs to the technical field of water treatment facilities technique and specifically relates to a self-maintenance sewage treatment integration equipment of low energy consumption is related to.

Background

In recent years, with the emphasis of the country on the water environment problem in rural areas, a large number of sewage treatment facilities are built in rural areas in China. The integrated equipment is widely used due to the advantages of high integration, small occupied area, convenient transportation, short construction period and the like. Patent 202010278347.8 discloses a small-size villages and small-size towns sewage treatment integration equipment, and it is including preliminary heavy edulcoration unit of preliminary treatment, biochemical nitrogen and phosphorus removal unit, membrane module degree of depth processing unit, clean water basin disinfection unit etc. has solved villages and small-size towns sewage treatment inefficiency, and low temperature environment operation unstability scheduling problem. Although the small-sized village and town sewage treatment integrated equipment has a good treatment effect, the whole system has high operation cost due to the fact that the small-sized village and town sewage treatment integrated equipment comprises a plurality of power consumption equipment such as a pulse water distribution pump, a reflux pump, a back flush pump, an aeration system, a membrane component system, a disinfection device and the like. In addition, patent 201910771888.1 also discloses a distributed sewage treatment integration equipment, and it includes the three region of oxygen deficiency case, good oxygen case, the setting tank that arranges in order, and oxygen deficiency pond and good oxygen pond hold biofilm carrier concurrently, and it adopts the mode of aeration air stripping backward flow to simplify the setting tank, have better COD, total nitrogen removal effect, the running cost is lower. Although the distributed sewage treatment integrated equipment is simple and can treat sewage, the distributed sewage treatment integrated equipment has the following defects: firstly, the anoxic tank, the aerobic tank and the sedimentation tank are independently arranged, so that the space utilization rate of the whole equipment is not high; secondly, additional aeration is needed for backflow, and the power of an aeration fan is increased; thirdly, the separation effect of the sedimentation tank is poor, and the phenomenon of high SS (suspended solid) of effluent possibly exists.

In the current integration technology, mostly just simply apply mechanically municipal sewage treatment process, mainly consider based on high integration and reduction occupation of land and construction cost, ubiquitous structure is complicated, and the consumer is many (especially electrical components equipment), and is with high costs, and the energy consumption is big, and operation and maintenance require high grade problem. Unlike the city, the countryside living in China is scattered, the capital, talents and technology are in short supply, and the laggard economic and technical level is not enough to support the normal operation of the existing equipment. Therefore, the phenomenon that the rural integrated equipment is idle soon after being built in China is very common.

In conclusion, on the premise of ensuring that the effluent reaches the standard, the integrated equipment is simplified, the number of electric equipment is reduced as much as possible, the maintenance requirement is reduced, the operation cost is reduced, and the method becomes a key point and a difficult point for solving the rural sewage treatment.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems of the integrated equipment in China, the utility model aims to provide the self-maintenance sewage treatment integrated equipment, which carries out back flushing on the filter bed through siphon drainage to realize the dry-wet alternative operation and the self-maintenance capability of the filter bed; three areas are nested layer by layer, so that the volume utilization rate is improved, the heat dissipation is reduced, and the low-temperature treatment effect is enhanced; realizes the return of nitrifying liquid and the return of sludge, and improves the shock resistance of the system.

The purpose of the utility model is realized by the following technical scheme.

A self-maintenance sewage treatment integrated device comprises a reactor main body, wherein a filter bed is arranged in the reactor main body, a water inlet pipe and a siphon drain pipe which extend into the lower part of the filter bed are arranged along the side wall of the reactor main body, the water inlet pipe is communicated with a gas stripping return pipe, the end part of the pipe orifice of the gas stripping return pipe is communicated with an inverted cone-shaped tank body, the reactor main body below the filter bed is vertically divided into a settling zone and an aerobic zone by the inverted cone-shaped tank body, the aerobic zone is internally provided with an anoxic zone which is divided by an anoxic denitrification tank, the upper part of the anoxic denitrification tank is communicated with the water inlet pipe, and the bottom of the anoxic denitrification tank is provided with an anoxic zone water outlet; the bottom of the reactor main body is provided with a sludge discharge pipe.

Preferably, the anoxic denitrification tank is arranged at the bottom of the reactor main body, and a water outlet at the bottom of the anoxic zone is communicated with the aerobic zone; the bottom of the sedimentation zone is communicated with the aerobic zone for the concentrated sludge in the sedimentation zone to automatically flow back to the aerobic zone.

Preferably, the aerobic zone is internally provided with a suspended filler and a jet aeration pump, and a water outlet of the jet aeration pump is arranged along the tangential direction of the inner cylinder wall of the aerobic zone.

Preferably, the wall of the conical tank body between the aerobic zone and the sedimentation zone is provided with a small hole which is a water outlet of the aerobic zone.

As a further preference, an air release pipe is connected above the top of the air stripping return pipe.

Preferably, the siphon drain pipe comprises a vertical pipe, a horizontal pipe and a U-shaped water storage pipe which are sequentially connected, wherein the vertical pipe penetrates through the filter bed through a siphon sleeve to be communicated with the sedimentation area, a gas electromagnetic valve is arranged at the upper end of the U-shaped water storage pipe, a liquid level valve is arranged in the siphon sleeve and connected with the electromagnetic valve through a lead as further preference, and a water outlet pipe is arranged above the horizontal pipe of the siphon drain pipe.

Preferably, the height of the transverse pipe of the gas stripping return pipe communicated with the water inlet pipe is not lower than that of the water outlet pipe.

The beneficial effects of the utility model reside in that:

the utility model discloses in, good oxygen pond gas is collected in the cone top for the air stripping of nitrifying liquid flows back, and in addition, the concentrated mud of settling zone can fall back to the good oxygen district by oneself, consequently need not plus the backwash pump, and the reactor operation in-process only needs a jet aeration pump, greatly reduced system operation and maintenance cost.

The utility model discloses in, anoxic zone, good oxygen district, settling zone are nested layer upon layer, and outer settling zone is equivalent to the heat preservation, and in-process among the sewage treatment, biochemical regional heat of production is difficult to run off, has guaranteed the low temperature treatment effect.

The utility model discloses in, through siphon drainage setting, can realize the wet-dry alternate operation of filter bed, the filter bed microorganism is in good oxygen-anaerobism alternate environment, does benefit to waste water denitrogenation. And the siphon drainage operation mode is used for backwashing the filter tank, so that the blockage of the filter bed is reduced. The shock resistance of the system is improved, the self-maintenance capability is realized, and unattended operation can be realized.

The utility model discloses in, the filter bed is located the reactor inside the top, through siphon drainage system, can realize the self-maintenance of filter bed, after the filter bed blocks up, only need carry on simple manual work turn over dredge can, maintain and change simply, technical requirement hangs down.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of the present invention;

fig. 3 is a sectional view of the present invention taken along line B-B.

Wherein: 1-a reactor body, 2-an anoxic zone, 3-an aerobic zone, 4-a settling zone, 5-a filter bed, 6-a siphon drain pipe, 7-a water inlet pipe, 8-a gas stripping return pipe, 9-an anoxic zone water inlet, 10-an anoxic zone water outlet, 11-a suspended filler, 12-a jet aeration pump, 13-an air release pipe, 14-an aerobic zone water outlet, 15-a siphon sleeve, 16-a liquid level valve, 17-a gas electromagnetic valve, 18-a water outlet pipe, 19-a sludge discharge pipe, 20-an anoxic denitrification tank and 21-a reactor body support frame.

Detailed Description

The present invention will be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are used for explaining the present invention, but not for limiting the present invention.

Referring to fig. 1, the utility model provides a low energy consumption self-maintenance sewage treatment integrated equipment, which comprises a cylindrical reactor main body 1, wherein a filter bed 5 is arranged inside the reactor main body 1, a water inlet pipe 7 and a siphon water outlet pipe 6 which extend into the lower part of the filter bed 5 are arranged along the side wall of the reactor main body 1, the water inlet pipe 7 is communicated with an air stripping return pipe 8, the end part of the pipe orifice of the air stripping return pipe 8 is communicated with an inverted cone-shaped tank body, the reactor main body 1 below the filter bed 5 is divided into a settling zone 4 and an aerobic zone 3 by the inverted cone-shaped tank body, and the conical tank body is provided with an aerobic zone water outlet 14; an anoxic denitrification tank 20 is arranged in the aerobic zone 3, the upper part of the anoxic denitrification tank 20 is communicated with the water inlet pipe 7, and the bottom of the anoxic denitrification tank 20 is provided with an anoxic zone water outlet 10.

The top of the gas stripping return pipe 8 is communicated with an air release pipe 13 extending out of the reactor main body 1; the siphon drain pipe 6 is sleeved with a siphon sleeve 15 outside the pipe extending into the filter bed 5, the siphon drain pipe 6 comprises a vertical pipe, a horizontal pipe and a U-shaped water storage pipe which are sequentially connected, wherein the vertical pipe penetrates through the filter bed 5 through the siphon sleeve 15 to be communicated with the sedimentation zone 4, the upper end of the U-shaped water storage pipe is provided with an emptying pipe, and the emptying pipe is provided with a gas electromagnetic valve 17. A liquid level valve 16 is installed in the siphon bell 15. The upper part of the reactor body 1 is provided with a water outlet pipe 18, the water outlet pipe 18 is arranged above the horizontal pipe of the siphon water outlet pipe 6, and the water inlet pipe 7, the siphon water outlet pipe 6 and the water outlet pipe 18 respectively extend out along different directions of the reactor body 1, as shown in figure 2. And the height of the transverse pipe of the air stripping return pipe 8 communicated with the water inlet pipe is not lower than that of the water outlet pipe 18.

As shown in FIG. 3 in conjunction with FIG. 1, a sludge discharge pipe 19 is provided at the bottom of the reactor main body 1. The anoxic denitrification tank 20 is fixed on the conical tank body at the bottom of the reactor main body through an anoxic zone support frame, and the reactor main body 1 is placed on the ground through a reactor main body support frame 21. The aerobic zone 3 is internally provided with a suspended filler 11 and a jet aeration pump 12, the water outlet of the jet aeration pump 12 is horizontally arranged along the inner cylinder wall of the aerobic zone, and the water outlet of the jet aeration pump 12 is arranged along the tangential direction of the inner cylinder wall of the aerobic zone.

The reactor main body 1 is respectively as follows from bottom to top (from inside to outside): an anoxic zone 2, an aerobic zone 3 and a settling zone 4.

The specific working process is as follows: sewage after simple deslagging pretreatment is converged by an inlet pipe 7 and nitrified liquid from an aerobic zone through an self-gas stripping return pipe 8, enters an anoxic zone 2 through an anoxic zone water inlet 9, and is subjected to anoxic denitrification to remove part of total nitrogen; the sedimentation zone 4 carries out mud-water separation on the effluent of the aerobic zone 3, the supernatant fluid flows through the filter bed 5 and is finally discharged, and the concentrated sludge falls back to the aerobic zone 3; the aerobic zone 3 removes pollutants such as COD, ammonia nitrogen and the like; the filter bed 5 further intercepts suspended substances in the effluent of the settling zone 4, and meanwhile, a filter material of the filter bed is attached with a biological membrane to further degrade pollutants; the siphon water discharge pipe 6 carries out siphon water discharge, can carry out back flush to the filter bed, guarantees the dry-wet alternate operation of the filter bed simultaneously, provides filter material biological membrane aerobic, anaerobism alternate environment, does benefit to the intensive denitrogenation.

Then, the wastewater flows into the aerobic zone 3 from a water outlet 10 of the anoxic zone, a suspended filler 11 and a jet aeration pump 12 are arranged in the aerobic zone 3, and the suspended filler 11 can be attached with a large number of microorganisms, so that the pollutant removal efficiency is improved; the jet aeration pump 12 can charge the air outside the system into the aerobic zone 3; meanwhile, the water outlet of the jet aeration pump 12 is in the tangential direction of the cylinder wall, so that the mixed liquid in the aerobic zone 3 has a stirring effect, the filler can be fully contacted with the sewage, the removal of pollutants is facilitated, and the water flow state in the aerobic zone 3 can be considered as a complete mixed type. In addition, due to the arrangement of the inverted cone structure above the aerobic zone 3, gas can be collected at the top end of the inverted cone and continuously rises through the gas stripping return pipe 8, part of nitrified liquid is brought out in the rising process, after the gas-water mixture reaches the top end, the gas is discharged from the air release pipe 13, and the nitrified liquid flows downwards automatically and is merged with the inflow raw water to enter the anoxic zone 2; the reflux quantity can be adjusted within a certain range through the pipe diameter of the gas stripping reflux pipe 8 and the height of the transverse pipe.

In addition, the residual muddy water mixed liquor in the aerobic zone 3 enters the sedimentation zone 4 through the aerobic zone water outlet 14, the cross section area of the sedimentation zone 4 is continuously increased from bottom to top due to the inverted cone-shaped tank body structure, so that the rising speed of the mixed liquor is reduced, the bottom of the inverted cone-shaped tank body is not sealed, the sludge is sunk and returns to the aerobic zone 3 again, and the supernatant rises and seeps out through the filter bed 5. The filter bed 5 is filled with a porous filter material, and supernatant in the settling zone 4 is further filtered to intercept suspended substances; meanwhile, the specific surface area of the porous filter material in the filter bed 5 is large, so a large number of microorganisms are attached to the porous filter material, and the filter bed has a further pollutant removing effect.

After a period of operation, the filter bed 5 may become clogged, resulting in a flux drop; at this time, the water level in the siphon sleeve 15 penetrating through the filter bed 5 rises, and when the water level rises to a set water level, the liquid level valve 16 touches the electromagnetic valve 17 connected with the liquid level valve through a wire to open temporarily and then close again, and the siphon drain pipe 6 performs siphon drainage until the bottom end of the vertical pipe of the siphon drain pipe 6 is exposed out of the water surface. In the drainage process, the water flow direction of the filter bed 5 is downward and is opposite to the normal operation flow direction, so that the back washing is completed, and the self maintenance of the reactor is realized.

The specific process of siphon drainage comprises the following steps: after once drainage, because the U-shaped water storage pipe at the bottom of the siphon drainage pipe 6 is filled with liquid, the air pressure in the siphon pipe is gradually increased along with the rising of the water level to form air resistance, even if the water level in the reactor exceeds the highest point of the siphon pipe and reaches the water level of the water outlet pipe 18, the water still can not be discharged from the siphon drainage pipe 6, only when the electromagnetic valve 17 is opened, the gas in the siphon pipe is discharged, the water in a settling zone can enter the siphon vertical pipe and cross the horizontal pipe to be discharged from a siphon drainage system by gravity, at the moment, the electromagnetic valve 17 is closed very quickly because the water level of the siphon sleeve pipe 15 descends, siphon drainage is formed, and the water level is leaked out until the bottom of the siphon vertical pipe, and the siphon drainage is finished.

In this equipment, solenoid valve 17 is the gas solenoid valve, and consequently the pipe diameter is very little, and power is very low, and in addition,

solenoid valve

17 and 16 non-continuous work of liquid level valve, consequently the power consumption is less, and these two normal operating requirements can be satisfied to small-size storage battery.

Although siphon drainage has a back-flushing effect, if the running time is too long, the filter bed 5 may be seriously jammed, and because the filter bed 5 is positioned at the upper end of the reactor, even if the filter bed is buried, the replacement and maintenance difficulty is not increased, and the filter bed is simply turned over or replaced manually by using tools such as a hoe, and the maintenance difficulty and the cost are lower.

In addition, in some remote rural areas, solar power generation can be used as power input for the jet aeration pump 12, so that the normal operation of the jet aeration pump 12 can be maintained even if power failure occurs at night. Moreover, the nitrification effect of the system is poor, and the drainage mode can be changed into siphon drainage through the adjustment of the height of the liquid level valve 16, so that the aerobic-anaerobic alternate operation of the filter bed is realized, and the nitrification effect of the filter bed is enhanced.

The embodiment of the utility model provides an among the integration sewage treatment device, under the condition that COD, ammonia nitrogen, total nitrogen concentration of intaking are not higher than 5000mg/L, 500mg/L, 700mg/L respectively, through control water conservancy dwell time, air-water ratio and reflux, go out water COD, ammonia nitrogen, total nitrogen concentration and be not higher than 300mg/L, 50mg/L, 200mg/L respectively. The system obtains better total nitrogen removal effect by using unpowered gas reflux under the condition of no nitrifying liquid reflux pump; under the condition of no sludge reflux pump, the biomass of the aerobic pool is maintained by utilizing the sludge self-reflux, and the clear effluent is ensured.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The self-maintenance sewage treatment integrated equipment is characterized by comprising a reactor main body (1), wherein a filter bed (5) is arranged in the reactor main body (1), a water inlet pipe (7) and a siphon water drain pipe (6) which extend into the lower part of the filter bed (5) are arranged along the side wall of the reactor main body (1), the water inlet pipe (7) is communicated with a gas stripping return pipe (8), the end part of the pipe orifice of the gas stripping return pipe (8) is communicated with an inverted cone tank body, the inverted cone tank body vertically divides the reactor main body (1) below the filter bed (5) into a settling zone (4) and an aerobic zone (3), the aerobic zone (3) is internally provided with an anoxic zone (2) separated by an anoxic denitrification tank (20), the upper part of the anoxic denitrification tank (20) is communicated with the water inlet pipe (7), and the bottom part of the anoxic zone is provided with an anoxic zone water outlet (10); the bottom of the reactor main body (1) is provided with a sludge discharge pipe (19).

2. The self-maintenance sewage treatment integrated equipment according to claim 1, wherein the anoxic denitrification tank (20) is arranged at the bottom of the reactor main body (1), and the anoxic zone water outlet (10) is communicated with the aerobic zone (3); the bottom of the sedimentation zone (4) is communicated with the aerobic zone (3).

3. The self-maintenance sewage treatment integrated equipment according to claim 1, wherein a suspended filler (11) and a jet aeration pump (12) are arranged in the aerobic zone (3), and a water outlet of the jet aeration pump (12) is arranged along the tangential direction of the inner cylinder wall of the aerobic zone.

4. The integrated self-maintenance sewage treatment device according to claim 1, wherein the wall of the conical tank between the aerobic zone and the settling zone is provided with an aerobic zone water outlet (14).

5. A self-maintenance integrated sewage treatment plant according to claim 1, characterised in that an air release duct (13) is connected above the top of said stripping return duct (8).

6. The self-maintenance sewage treatment integrated equipment according to claim 1, wherein the siphon drain pipe (6) comprises a vertical pipe, a horizontal pipe and a U-shaped water storage pipe which are connected in sequence, wherein the vertical pipe passes through the filter bed (5) through a siphon sleeve (15) and is communicated with the settling zone (4), a gas solenoid valve (17) is arranged at the upper end of the U-shaped water storage pipe, a liquid level valve (16) is arranged in the siphon sleeve (15), and the liquid level valve (16) is connected with the solenoid valve (17) through a lead.

7. The self-maintenance sewage treatment integrated equipment according to claim 6, wherein a water outlet pipe (18) is arranged above the horizontal pipe of the siphon water outlet pipe (6).

8. A self-maintenance sewage treatment integrated device according to claim 7, characterized in that the height of the cross pipe of the air stripping return pipe (8) communicated with the water inlet pipe is not lower than the height of the water outlet pipe (18).