CN215480020U - Self-circulation double-AO biochemical integrated sewage treatment device and water treatment system - Google Patents

Abstract

The utility model relates to the technical field of water treatment equipment, and provides a self-circulation double-AO biochemical integrated sewage treatment device and a water treatment system, wherein the self-circulation double-AO biochemical integrated sewage treatment device comprises: the water collection system comprises a primary preposed anoxic zone and a first water collection pipe, wherein the first water collection pipe is used for collecting water in the primary preposed anoxic zone; the secondary pre-anoxic zone is arranged at the downstream of the primary pre-anoxic zone, and the other end of the first water collecting pipe enters the secondary pre-anoxic zone; the water body accelerating devices are respectively arranged in the primary preposed anoxic zone and the secondary preposed anoxic zone; the biochemical reaction area is positioned at the downstream of the secondary pre-anoxic area, and the sedimentation area is positioned at the downstream of the biochemical reaction area. This biochemical integrated sewage treatment ware of two AO of self-loopa relies on the kinetic energy of water self to stir, need not to set up the agitator in the leading anoxic zone of one-level and the leading anoxic zone of second grade, has reduced the electric power load of the biochemical integrated sewage treatment ware of two AO of whole self-loopa, is favorable to reducing running cost.

Description

Self-circulation double-AO biochemical integrated sewage treatment device and water treatment system

Technical Field

The utility model relates to the technical field of water treatment equipment, in particular to a self-circulation double-AO biochemical integrated sewage treatment device and a water treatment system.

Background

The sewage treatment integrated equipment is a comprehensive body with strong sewage treatment capacity formed by effectively integrating unit bodies with different treatment functions. The integrated equipment is based on biochemical reaction, integrates pretreatment in the early stage, biological treatment in the middle stage, floc sedimentation and disinfection in the later stage, and is assisted by internal reflux, external reflux and the like.

For the integrated equipment in the related art, during the pretreatment in the early stage, in order to support the normal progress of the biochemical reaction, a plurality of stirrers are usually arranged in the primary pre-anoxic zone and the secondary pre-anoxic zone to make the denitrifying bacteria and the raw water fully mix and react, so as to improve the purification effect of the sewage. However, the internal anoxic section of the integrated equipment is stirred and mixed by the stirrer, so that the power load of the integrated equipment is greatly increased, and the operation cost of the integrated equipment is increased. Moreover, as the usage time increases, wear and tear of the agitator may occur, and maintenance or replacement of the agitator may increase the overall maintenance burden of the integrated equipment.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defects of large power load and high maintenance cost of a sewage treatment device in the related art, and provide a self-circulation double-AO biochemical integrated sewage treatment device and a water treatment system.

The utility model provides a self-circulation double-AO biochemical integrated sewage treatment device, which comprises: the first-stage pre-anoxic zone is provided with a reactor water inlet; one end of the first water collecting pipe is arranged in the primary pre-anoxic zone and is used for collecting water in the primary pre-anoxic zone; the secondary pre-anoxic zone is arranged at the downstream of the primary pre-anoxic zone, and the other end of the first water collecting pipe enters the secondary pre-anoxic zone; the water accelerating device is respectively arranged in the primary preposed anoxic zone and the secondary preposed anoxic zone, and comprises: a nozzle adapted to be connected to the reactor water inlet or the other end of the first header, at least a portion of the inner diameter of the nozzle decreasing in the direction of flow of the body of water; the throat pipe comprises a throat pipe water inlet and a throat pipe water outlet, the throat pipe water inlet is covered above the spray pipe, and an acceleration water channel is formed between the spray pipe and the throat pipe; the biochemical reaction area is arranged at the downstream of the secondary pre-anoxic area; the sedimentation zone is arranged at the downstream of the biochemical reaction zone and is provided with a reactor water outlet; at least one of the primary preoxygenation area, the secondary preoxygenation area, the biochemical reaction area and the precipitation area is provided with an exhaust valve.

Further, one end of the first water collecting pipe is arranged above the throat pipe.

Furthermore, a plurality of water inlet holes are formed in the part of the first water collecting pipe, which enters the primary pre-anoxic zone.

Further, at least a part of the spray pipe is arranged in a conical shape along the flowing direction of the water body.

Further, at least one part of the area of the throat pipe corresponding to the spray pipe is in a conical shape.

Further, along the width direction of the primary preposed anoxic zone, the primary preposed anoxic zone is divided into a plurality of first chambers, and the bottoms of the first chambers are communicated; a throat in the primary pre-anoxic zone is positioned in the first cavity in the middle; the first chambers positioned on two sides are communicated with the secondary preposed anoxic zone through the first water collecting pipe.

Further, along the width direction of the secondary preposed anoxic zone, the secondary preposed anoxic zone is divided into a plurality of second chambers, and the bottoms of the second chambers are communicated; a throat in the secondary pre-anoxic zone is positioned in the second cavity in the middle; the part of the first water collecting pipe positioned in the secondary pre-anoxic zone is communicated with the spray pipe in the secondary pre-anoxic zone; and the second chambers positioned on two sides are communicated with the biochemical reaction area through second water collecting pipes.

Furthermore, the biochemical reaction area comprises a primary reaction area and a secondary reaction area along the flowing direction of the water body; the primary reaction zone comprises a primary aerobic chamber and a primary synchronous anoxic chamber which are communicated; the secondary reaction zone comprises a secondary aerobic chamber and a secondary synchronous anoxic chamber which are communicated; the second water collecting pipe extends into the primary synchronous anoxic chamber, the primary aerobic chamber is communicated with the secondary synchronous anoxic chamber through a third water collecting pipe, and the secondary aerobic chamber is communicated with the downstream sedimentation zone.

Furthermore, the primary aerobic chamber comprises two symmetrical primary synchronous anoxic chambers, and the third water collecting pipe comprises a water inlet part connected with the primary aerobic chamber and a water outlet part connected with the secondary synchronous anoxic chambers.

Further, a first guide plate is arranged on the top wall of each primary aerobic chamber; a second guide plate is arranged on the side wall of each primary aerobic chamber close to the secondary reaction zone; and a water body passing area is formed between the bottom of the first guide plate and the plate surface of the second guide plate.

Furthermore, the secondary aerobic chamber is arranged around the outer side of the secondary synchronous anoxic chamber.

Furthermore, aeration discs are arranged at the bottoms of the primary aerobic chamber and the secondary aerobic chamber; and the primary aerobic chamber and the secondary aerobic chamber are both provided with suspended fillers suitable for the growth of microorganisms.

Furthermore, the sedimentation area is divided into a nitrifying liquid reflux chamber, a floc sedimentation compression chamber, a floc sedimentation chamber and a filtering chamber along the flowing direction of the water body; the nitrifying liquid reflux chamber is communicated with the primary pre-anoxic zone; the filtering chamber is positioned above the floc settling and compressing chamber and the floc settling chamber, and the filtering chamber is communicated with the water outlet of the reactor.

Further, the nitrifying liquid return chamber is communicated with the biochemical reaction area through an inverted V-shaped channel.

Furthermore, the self-circulation double-AO biochemical integrated sewage treatment device also comprises a nitrifying liquid reflux device, one end of the nitrifying liquid reflux device acts in the nitrifying liquid reflux chamber, and the other end of the nitrifying liquid reflux device is connected with the spray pipe in the primary preposed anoxic zone.

Further, the settling zone also comprises at least one high-density floc collecting hopper which is positioned between the nitrifying liquid reflux chamber and the floc settling compression chamber; one end of the floc circulating device acts in the high-density floc collecting hopper, and the other end of the floc circulating device is connected with the spray pipe in the secondary pre-anoxic zone.

Furthermore, the settling zone also comprises a third guide plate, one end of the third guide plate is connected with the top wall of the settling zone, and the other end of the third guide plate extends to the bottom of the floc settling and compressing chamber.

Furthermore, the self-circulation double-AO biochemical integrated sewage treatment device also comprises a separation pipe group; the separation pipe group is arranged above the floc settling and compressing chamber and the floc settling chamber, and comprises a plurality of guide pipes.

Furthermore, the self-circulation double-AO biochemical integrated sewage treatment device also comprises a clear water collecting device which is arranged above the separation pipe group and is connected with the water outlet of the reactor.

Furthermore, the tops of the primary pre-anoxic zone and the secondary pre-anoxic zone are arranged in a closed shape.

Further, at least one of the floc settling and compressing chamber, the floc settling chamber and the high-density floc collecting hopper is provided with a sludge discharge device.

The utility model also provides a water treatment system, which comprises the self-circulation double-AO biochemical integrated sewage treatment device; the water inlet system is connected with the water inlet of the reactor; and the water purification system is connected with the water outlet of the reactor.

Further, the water treatment system further comprises: the sludge treatment system is connected with the sludge discharge device.

The technical scheme of the utility model has the following advantages:

the self-circulation double-AO biochemical integrated sewage processor provided by the utility model is characterized in that a water body accelerating device is respectively arranged in the primary preposed anoxic zone and the secondary preposed anoxic zone, the water body accelerating device is provided with a spray pipe and a throat pipe, and a water inlet of the throat pipe is covered above the spray pipe to form an accelerating water channel. After entering the spray pipe from the water inlet of the reactor, at least one part of the inner diameter of the spray pipe is reduced, so that the water body can be accelerated after flowing out of the spray pipe, and then is sprayed out from the top opening of the throat pipe through the acceleration water channel and is dispersed all around. Under the action of gravity, the water body falls down, and under the action of negative pressure, the water body enters the accelerating water channel through the interval between the throat pipe and the spray pipe, and the water body in the primary preposed anoxic zone is stirred in a hydraulic circulation mode. One end of the first water collecting pipe is communicated with the primary preposed anoxic zone, the other end of the first water collecting pipe is communicated with the spray pipe in the secondary preposed anoxic zone, the spray pipe arranged in the secondary preposed anoxic zone and the throat pipe are used for stirring the water body in the secondary preposed anoxic zone in a hydraulic circulation mode, and the stirred water body can flow into a downstream biochemical reaction zone and a precipitation zone for subsequent purification. In the whole process, the kinetic energy of the water body is used for stirring, the stirrer is not required to be arranged in the primary preposed anoxic zone and the secondary preposed anoxic zone, the power load of the whole self-circulation double-AO biochemical integrated sewage treatment device is reduced, the running cost is favorably reduced, and meanwhile, the stirrer is not required to be maintained or replaced, so that the whole maintenance burden of the self-circulation double-AO biochemical integrated sewage treatment device is reduced.

The self-circulation double-AO biochemical integrated sewage processor provided by the utility model is provided with the nitrifying liquid reflux device, the nitrifying liquid in the nitrifying liquid reflux chamber is conveyed to the primary pre-anoxic zone, and the nitrifying liquid is mixed with raw water to reduce the pollutant concentration of the raw water, so that the subsequent biochemical treatment is facilitated. And the nitrifying liquid can utilize an organic carbon source of the raw water to carry out denitrification reaction, so that the total nitrogen in the raw water is reduced.

The self-circulation double-AO biochemical integrated sewage processor provided by the utility model has the advantages that the biochemical reaction area comprises the primary reaction area and the secondary reaction area, and in the primary reaction area and the secondary reaction area, a water body alternately flows in the synchronous anoxic section and the aerobic section, so that the water outlet effect is favorably improved; and the air stripping principle is used for driving the water body to flow and disturb, so that the power consumption is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of a self-circulating dual AO biochemical integrated wastewater processor provided in one embodiment of the present invention;

FIG. 2 is a top view of a self-circulating dual AO biochemical integrated wastewater processor provided in one embodiment of the present invention;

fig. 3 is a sectional view taken along a-a in fig. 1.

Description of reference numerals:

1-first-stage front anoxic zone; 2-a secondary pre-anoxic zone; 3-a first-stage reaction zone;

4-a secondary reaction zone; 5-nitrifying liquid reflux chamber; 6-floc settling compression chamber;

7-floc settling chamber; 8-filtering chamber; 9-separating the tube group;

10-clear water collecting device; 11-high density floc collecting hopper; 12-nitrifying liquid reflux unit;

13-floc circulation means; 14-inverted V-shaped channel; 15-aeration disc;

16-suspended fillers; 17-a first baffle; 18-a second baffle;

19-a third baffle; 20-a sludge discharge device; 21-a first chamber;

22-a second chamber; 23-first-stage aerobic chamber; 24-primary synchronous anoxic chamber;

25-a secondary aerobic chamber; 26-a secondary synchronous anoxic chamber; 27-a first header pipe;

28-a second header pipe; 29-third header pipe.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Fig. 1 is a front view of a self-circulation double-AO biochemical integrated sewage treatment apparatus according to an embodiment of the present invention, and as shown in fig. 1, the present embodiment provides a self-circulation double-AO biochemical integrated sewage treatment apparatus, in which a cross section is taken along an axis direction of the self-circulation double-AO biochemical integrated sewage treatment apparatus, that is, a left-to-right direction in fig. 1, a body of the self-circulation double-AO biochemical integrated sewage treatment apparatus is a tank body having a rectangular cross-sectional shape, a reactor water inlet is disposed at one side of the tank body, a reactor water outlet is disposed at the other side of the tank body, a water body to be purified enters the tank body through the reactor water inlet, and a purified water body flows out from the reactor water outlet. Wherein, inside the jar body, along the direction of flow of water, be one-level leading anoxic zone 1, leading anoxic zone 2 of second grade, biochemical reaction district and settling zone in proper order.

The water inlet is suitable for introducing water and a medicament to be purified, the medicament can be introduced through an independent medicament pipe, and the medicament can also be directly introduced through the water inlet after being mixed with the water. For example, the added agent can be polymeric aluminum oxide, polyacrylamide, polymeric ferric sulfate, and the like.

For the primary pre-anoxic zone 1, a spray pipe is arranged at the bottom of the primary pre-anoxic zone 1, the flow direction of the fluid entering the reactor from the water inlet in the horizontal direction is changed into the vertical direction by the spray pipe, as shown in fig. 1, the spray pipe sprays water vertically upwards, and the water inlet of the reactor is arranged close to the bottom of the tank body and is communicated with the bottom of the spray pipe.

In this embodiment, in order to accelerate the water, the water acceleration device is provided, and the structure of the water acceleration device itself is not limited as long as acceleration can be achieved.

As a preferred embodiment, as shown in fig. 1, a throat is sleeved at a water outlet at the top of the nozzle, the throat is vertically arranged and spaced from the top of the tank body, and the diameter of the throat is greater than that of the nozzle.

Wherein, the pipe diameter of spray tube reduces along the direction of being close to the choke gradually, can play the effect of accelerating to the water body that sprays like this, is favorable to improving the mixed effect. The water body is sprayed out from the spray pipe, enters the throat pipe and is sprayed out from the top of the throat pipe. Wherein, the pipe diameter of the throat gradually increases along the direction close to the top of the tank body, so that the water body diffuses towards the periphery and is discharged. Furthermore, in order to improve the utilization rate of the medicament, the water flowing out of the top of the throat pipe flows back to the inside of the spray pipe again through a gap between the throat pipe and the spray pipe. Because the water flow in the spray pipe has certain water pressure, the circulating operation of the water body can be realized, and the purifying effect is further effectively improved.

In this embodiment, the top of the primary pre-anoxic zone 1 may be open. Preferably, the top of the primary preposed anoxic zone 1 can be sealed, a sealing steel plate is arranged at the top of the primary preposed anoxic zone 1 at the moment, and the water body is sprayed out through a throat pipe and then collides with the top of the tank body, so that the effect of mixing and stirring is improved. Under the action of gravity, the water body falls back downwards, and under the action of negative pressure formed by spraying water from the spray pipe, the water body is sucked into the throat pipe from the gap between the throat pipe and the spray pipe, and the circular stirring is carried out again. For the whole primary front anoxic zone 1, the stirring and mixing of the water body completely depends on the kinetic energy of the water body, and an additional stirrer is not required to be arranged for stirring.

FIG. 2 is a top view of a self-circulating dual AO biochemical integrated wastewater processor provided in one embodiment of the present invention; as shown in fig. 2, wherein, the inside interval of leading anoxic zone 1 of one-level is provided with two baffles, the equal vertical setting of every baffle, two tip can respectively with two inner wall welded connection about leading anoxic zone 1 of one-level about the baffle, the top of baffle can with the roof welded connection of leading anoxic zone 1 of one-level, the bottom of every baffle all flows certain interval with the diapire of leading anoxic zone 1 of one-level to make the bottom of three first cavity 21 communicate each other. Wherein the throat is located in the middle first chamber 21 and the first water collecting pipes 27 are located in the first chambers 21 on both sides. Wherein, the mounting holes for mounting the first water collecting pipe 27 are all arranged near the top of the primary pre-anoxic zone 1. It should be noted that the left-right direction of the primary pre-anoxic zone 1 is consistent with the length direction of the tank body.

For the secondary pre-anoxic zone 2, a spray pipe is also arranged at the bottom of the secondary pre-anoxic zone 2, and the spray pipe sprays water vertically upwards. Meanwhile, a first water collecting pipe 27 is arranged between the primary pre-anoxic zone 1 and the secondary pre-anoxic zone 2, the arrangement position of the first water collecting pipe 27 is not limited, and the first water collecting pipe can be arranged at the lower part of the primary pre-anoxic zone 1 or at the middle part of the primary pre-anoxic zone 1 as long as the water injection operation into the secondary pre-anoxic zone 2 can be realized.

The part of the first water collecting pipe 27 positioned in the secondary pre-anoxic zone 2 is directly communicated with the bottom of the spray pipe positioned in the secondary pre-anoxic zone 2. The top water outlet of the spray pipe is also sleeved with a choke, the choke is vertically arranged and is spaced from the top of the tank body, and the pipe diameter of the choke is larger than that of the spray pipe.

The pipe diameter of the spray pipe is gradually reduced along the direction close to the throat, so that the sprayed water body can be accelerated, and the mixing effect can be improved. The water body is sprayed out from the spray pipe, enters the throat pipe and is sprayed out from the top of the throat pipe. Wherein, the pipe diameter of the throat gradually increases along the direction close to the top of the tank body, so that the water body diffuses towards the periphery and is discharged.

Wherein, the inside interval of the leading anoxic zone 2 of second grade is provided with two baffles, the equal vertical setting of every baffle, two tip can respectively with two inner wall welded connection of the left and right sides of the leading anoxic zone 2 of second grade about the baffle, as shown in figure 1, the baffle extends along the direction from a left side to the right side in the picture, the top of baffle can with the roof welded connection of the leading anoxic zone 2 of second grade, the bottom of every baffle all leaves certain interval with the diapire of the leading anoxic zone 2 of second grade, so that the bottom of three second cavity 22 communicates each other. Wherein the throat is located in the middle second chamber 22 and the inlet of the second water collecting pipe 28 is located in the second chambers 22 on both sides. Wherein, the mounting holes for mounting the second water collecting pipes 28 are all arranged near the top of the secondary pre-anoxic zone 2. It should be noted that the left-right direction of the secondary pre-anoxic zone 2 is consistent with the length direction of the tank body.

For example, the top of the secondary pre-anoxic zone 2 can be sealed, and the water body is sprayed out through the throat pipe and then collides with the top of the tank body, so that the mixing and stirring effects are improved. Under the action of gravity, the water body falls back downwards, and is sucked into the throat pipe from the gap between the throat pipe and the spray pipe under the action of negative pressure, and the circular stirring is carried out again. For the whole secondary front anoxic zone 2, the stirring and mixing of the water body completely depends on the self kinetic energy of the water body, and an additional stirrer is not required to be arranged for stirring. The jet pipe in the secondary pre-anoxic zone 2 forms micro negative pressure, so that the stirring of the internal circulation is not violent, the integrity of the floc is ensured, and the crushing of the floc is effectively reduced.

For example, in the case of a large amount of water, in order to increase the throughput of a single unit, a single primary pre-anoxic zone 1 may be provided, followed by irradiation of a plurality of secondary pre-anoxic zones 2.

The self-circulation double-AO biochemical integrated sewage treatment device provided by the embodiment is characterized in that a water body accelerating device is respectively arranged in the primary preposed anoxic zone 1 and the secondary preposed anoxic zone 2, the water body accelerating device is provided with a spray pipe and a throat pipe, and a water inlet of the throat pipe is covered above the spray pipe to form an accelerating water channel. After entering the spray pipe from the water inlet of the reactor, at least one part of the inner diameter of the spray pipe is reduced, so that the water body can be accelerated after flowing out of the spray pipe, and then is sprayed out from the top opening of the throat pipe through the acceleration water channel and is dispersed all around. Under the action of gravity, the water body falls down, and under the action of negative pressure, the water body enters the accelerating water channel through the interval between the throat pipe and the spray pipe, and the water body in the primary pre-anoxic zone 1 is stirred in a hydraulic circulation mode. One end of the first water collecting pipe 27 is communicated with the primary preposed anoxic zone 1, the other end is communicated with the spray pipe in the secondary preposed anoxic zone 2, the spray pipe and the throat pipe which are arranged in the secondary preposed anoxic zone 2 stir the water body in the secondary preposed anoxic zone 2 in a hydraulic circulation mode, and the stirred water body can flow into a downstream biochemical reaction zone and a sedimentation zone for subsequent purification. In the whole process, the kinetic energy of the water body is used for stirring, the stirrer is not required to be arranged in the primary preposed anoxic zone 1 and the secondary preposed anoxic zone 2, the power load of the whole self-circulation double-AO biochemical integrated sewage treatment device is reduced, the running cost is favorably reduced, and meanwhile, the stirrer is not required to be maintained or replaced, so that the overall maintenance burden of the self-circulation double-AO biochemical integrated sewage treatment device is reduced.

The water flowing out from the secondary pre-anoxic zone 2 will continue to enter the biochemical reaction zone, and for the biochemical reaction zone, independent structures can be respectively arranged between the secondary pre-anoxic zone 2 and the biochemical reaction zone, and a partition plate can also be shared at the adjacent positions of the biochemical reaction zone and the secondary pre-anoxic zone 2.

For the biochemical reaction area, a primary reaction area 3 and a secondary reaction area 4 are arranged in sequence along the conveying direction of the water body. Wherein, the primary reaction zone 3 is communicated with the secondary pre-anoxic zone 2 through a second water collecting pipe 28, and the secondary reaction zone 4 is communicated with the primary reaction zone 3 through a third water collecting pipe 29.

Wherein, can separate into a synchronous anoxic chamber of one-level 24 and two one-level aerobic chambers 23 through the baffle in the one-level reaction zone 3, two one-level aerobic chambers 23 symmetric distribution are in the both sides of the synchronous anoxic chamber of one-level 24, and the bottom of one-level aerobic chamber 23 is linked together with the bottom of the synchronous anoxic chamber of one-level 24, and the delivery port that second collector pipe 28 is located one-level reaction zone 3 is linked together with the synchronous anoxic chamber of one-level 24.

Fig. 3 is a sectional view along the direction a-a in fig. 1, as shown in fig. 3, an inverted V-shaped plate is installed on the bottom wall of the primary reaction zone 3, the inverted V-shaped plate is arranged along the length direction of the primary reaction zone 3, and the inverted V-shaped plate is located in the primary synchronous anoxic chamber 24, a certain interval is left between the inverted V-shaped plate and a partition plate in the primary reaction zone 3, as shown by arrows in fig. 3, a water body in the primary synchronous anoxic chamber 24 flows from top to bottom, separately flows to the primary aerobic chambers 23 on both sides from the bottom, and then flows back to the inside of the primary synchronous anoxic chamber 24 from the top of the primary synchronous anoxic chamber 24. Wherein, the position of the baffle plate in the first-stage reaction zone 3, which is close to the top wall, is provided with a through hole, so that the water in the first-stage aerobic chambers 23 at the two sides can permeate into the first-stage synchronous anoxic chamber 24.

Wherein, an aeration disc 15 is arranged at the bottom of the primary aerobic chamber 23 and is used for providing oxygen required by the reaction. Wherein, the primary aerobic chamber 23 is filled with a suspension filler 16 as a growth carrier of aerobic microorganisms.

Wherein, can separate into a synchronous anoxic chamber of second grade 26 and a second grade aerobic chamber 25 through the baffle in the second grade reaction zone 4, the synchronous anoxic chamber of second grade 25 surrounds and distributes at the trilateral of the synchronous anoxic chamber of second grade 26, and the bottom of the synchronous anoxic chamber of second grade 25 is linked together with the bottom of the synchronous anoxic chamber of second grade 26.

Wherein, as shown in fig. 3, the bottom wall of the second-stage reaction zone 4 is provided with an inverted V-shaped plate, the inverted V-shaped plate is arranged along the length direction of the second-stage reaction zone 4, the inverted V-shaped plate is positioned in the second-stage synchronous anoxic chamber 26, a certain interval is reserved between the inverted V-shaped plate and the partition plate in the second-stage reaction zone 4, the water body in the second-stage synchronous anoxic chamber 26 flows from top to bottom, and flows to the peripheral second-stage aerobic chamber 25 from the bottom opening. Wherein, the position of the partition board in the secondary reaction zone 4 close to the top wall is provided with a through hole, so that the water in the peripheral secondary aerobic chamber 25 can permeate into the secondary synchronous anoxic chamber 26.

Wherein, an aeration disc 15 is arranged at the bottom of the secondary aerobic chamber 25 and is used for providing oxygen required by the reaction. Wherein, the secondary aerobic chamber 25 is filled with a suspension packing 16 as a growth carrier of aerobic microorganisms.

As shown in fig. 1 and 2, the secondary reaction zone 4 is communicated with the primary reaction zone 3 through a third water collecting pipe 29, specifically, the water inlet of the third water collecting pipe 29 is arranged in the primary aerobic chamber 23, and the water outlet of the third water collecting pipe 29 is communicated with the secondary synchronous anoxic chamber 26. The water flowing out through the third water collecting pipe 29 flows out from the top position of the secondary synchronous anoxic chamber 26, and then flows into the secondary aerobic chamber 25 through the separation area between the lower part of the secondary synchronous anoxic chamber 26 and the secondary aerobic chamber 25, thereby realizing circulation.

Wherein, can set up first guide plate 17 at the roof of every one-level good oxygen room 23, first guide plate 17 can with the baffle parallel arrangement between one-level reaction zone 3 and the second grade reaction zone 4. A second baffle plate 18 may be provided at a side wall of each primary aerobic chamber 23 near the secondary reaction zone 4, and the second baffle plate 18 may be a V-shaped plate, an open side of which is provided toward the secondary reaction zone 4. A water body passing area is formed between the bottom of the first guide plate 17 and the plate surface of the second guide plate 18, and after passing through the water body passing area, the water body in the primary aerobic chamber 23 enters the secondary synchronous anoxic chamber 26 under the guidance of the third water collecting pipe 29.

For the settling zone, the nitrification liquid reflux chamber 5, the floc settling compression chamber 6, the floc settling chamber 7 and the filter chamber 8 are divided along the flowing direction of the water body.

Wherein, the nitrifying liquid reflux chamber 5 can be communicated with the upstream secondary aerobic chamber 25 through the inverted V-shaped channel 14. The floc in the secondary reaction zone 4 is retained to the maximum extent by the arrangement, and the strength of internal circulation stirring and the floc concentration are met; moreover, the section of the water passing section of the inverted V-shaped channel 14 entering the nitrifying liquid reflux chamber 5 is small, so that a large flow speed is generated, the pressure difference generated by the speed difference drives the upper mud-water mixture to descend, and a large vortex is formed, so that the flocs are in a suspended ascending state similar to a Brownian motion track.

The water body in the nitrifying liquid reflux chamber 5 rises at an accelerated speed, and in addition, smaller flocs are gathered continuously to form larger flocs, a fluidized bed with the concentration of the flocs increasing continuously is formed in the area, and passing small colloid particles are intercepted, gathered and filtered, so that most of suspended colloid in the water body can be removed.

The nitrifying liquid reflux chamber 5 can be communicated with the spray pipe in the primary pre-anoxic zone 1 through the nitrifying liquid reflux device 12, for example, the nitrifying liquid reflux device 12 can be an L-shaped pipeline, the vertical section of the L-shaped pipeline is located in the nitrifying liquid reflux chamber 5, and the water inlet of the vertical section of the L-shaped pipeline can be arranged close to the top of the nitrifying liquid reflux chamber 5.

Wherein, be provided with high density floc collection bucket 11 in the settling zone, this high density floc collection bucket 11 can be for toper funnel shaped structure, as shown in fig. 1, is provided with the swash plate and the vertical board that upwards slopes gradually on the right side of nitrifying liquid return chamber 5 to form toper funnel shaped structure. A certain space is left between the top of the high-density floc collecting hopper 11 and the top of the tank body for water to pass through. After the flocs are gathered to a certain degree, the high-density flocs fall into the downstream high-density floc collecting hopper 11, and the low-density flocs cross the high-density floc collecting hopper 11 and continue to be conveyed downstream along with the water body.

When the water body carries flocs to flow through, the high-density flocs preferentially settle into the high-density floc collecting hopper 11, namely, the high-quality high-density flocs are recycled.

Wherein, can set up the bottom that floc circulating device 13 and high density floc collecting hopper 11 link to each other, this floc circulating device 13 can be the pipeline of the spray tube in the leading anoxic zone 2 of direct intercommunication second grade and high density floc collecting hopper 11, relies on the negative pressure to inhale leading anoxic zone 2 of second grade with high density floc. Or when the device is started and debugged or low-turbidity water is treated, the high-density flocs are pumped out by the pump body and then conveyed to the secondary pre-anoxic zone 2, and the amount of the flocs in the secondary pre-anoxic zone 2 is increased.

Wherein, the inner wall in high density floc collecting hopper 11 can weld the body of rod of intercrossing for supplementary separation high density floc can also play certain anti turbulent effect simultaneously.

Wherein, an independent structure can be respectively arranged between the biochemical reaction area and the precipitation area, and a partition plate can also be shared at the adjacent part of the precipitation area and the biochemical reaction area.

A hydraulic channel is arranged at the downstream of the high-density floc collecting hopper 11 in the settling zone and is formed by a third guide plate 19 which is vertically arranged and the side wall of the high-density floc collecting hopper 11, one end of the third guide plate 19 is connected with the top wall of the settling zone, and the other end extends to the bottom of the floc settling and compressing chamber 6.

For example, the floc settling compression chamber 6 may have a funnel-like structure, and the third baffle 19 is located to the left of the vertical centerline of the floc settling compression chamber 6. The water flowing downwards strikes the bottom wall of the left side of the floc settling compression chamber 6 under the guidance of the hydraulic channel and then enters the downstream filter chamber 8, so that the mixing effect and the space utilization rate are improved.

Above the floc settling and compressing chamber 6, a separation tube group 9 is provided, and the separation tube group 9 includes a plurality of draft tubes. For example, the draft tube may be vertically disposed or may be obliquely disposed. The water body flows upwards after entering the floc settling and compressing chamber 6 through the hydraulic channel, the larger flocs directly sink into the floc settling and compressing chamber 6, the other part of flocs and the water body settle into the floc settling and compressing chamber 6 after passing through the separation tube group 9, and the clean water flows out from the water outlet at the top of the separation tube group 9.

The clear water collecting device 10 above the separation pipe group 9 can be of a groove structure, a plurality of tooth-shaped openings can be arranged at the opening edge of the groove wall, a water body is separated by the separation pipe group 9 and overflows into the clear water collecting device 10 through the tooth-shaped openings, and the water outlet of the clear water collecting device 10 is communicated with the water outlet of the reactor. Wherein, the water outlet of the reactor is arranged close to the top of the tank body. Wherein, the distance between the separation pipe group 9 and the clean water collecting device 10 can be adjusted to prevent a small part of flocs from entering the clean water collecting device 10.

Wherein, the setting of floc settling chamber 7 is in one side that floc settling compression chamber 6 back to high density floc collecting hopper 11, and this floc settling chamber 7 can be hopper-shaped structure, and the opening is towards separation tube group 9, and it is external that tiny floc falls into can directly discharge the jar through mud discharging device 20 after this floc settling chamber 7.

Wherein, the top of the primary preoxygenation area 1 and the secondary preoxygenation area 2 are arranged in a closed shape. For example, a closed steel plate can be arranged at the top of the primary pre-anoxic zone 1, and the water body is sprayed out through the throat pipe and then collides with the top of the tank body, so that the mixing and stirring effects are improved. For example, a closed steel plate can be arranged at the top of the secondary pre-anoxic zone 2, and the water body is sprayed out through the throat pipe and then collides with the top of the tank body, so that the mixing and stirring effects are improved.

Wherein at least one of the floc settling and compressing chamber 6, the floc settling chamber 7 and the high-density floc collecting hopper 11 is provided with a sludge discharge device 20 for discharging sludge.

Wherein, at least one of the primary preoxygenation area 1, the secondary preoxygenation area 2, the biochemical reaction area and the sedimentation area is provided with an exhaust valve to ensure that the internal hydraulic conditions meet the process requirements.

Wherein, the top of the tank body can be provided with a manhole so as to facilitate a maintainer to enter the tank body.

The embodiment also provides a water treatment system, which comprises the self-circulation double-AO biochemical integrated sewage treatment device; the water inlet system is connected with the water inlet of the reactor; and the water purification system is connected with the water outlet of the reactor.

In one embodiment, the water treatment system further comprises: the sludge treatment system is connected with the sludge discharge device 20.

In conclusion, the self-circulation double-AO biochemical integrated sewage treatment device provided by the utility model does not need external power, can realize self-backflow by utilizing the self power, and saves energy consumption.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims (23)

1. The utility model provides a biochemical integration sewage treatment ware of two AO of self-loopa which characterized in that includes:

the primary pre-anoxic zone (1) is provided with a reactor water inlet;

one end of the first water collecting pipe (27) is arranged in the primary pre-anoxic zone (1) and is used for collecting water in the primary pre-anoxic zone (1);

the secondary pre-anoxic zone (2) is arranged at the downstream of the primary pre-anoxic zone (1), and the other end of the first water collecting pipe (27) enters the secondary pre-anoxic zone (2);

the water accelerating device is respectively arranged in the primary preposed anoxic zone (1) and the secondary preposed anoxic zone (2), and comprises:

a nozzle adapted to be connected to the other end of the reactor water inlet or the first water collection pipe (27), at least a portion of the inner diameter of the nozzle decreasing in the direction of flow of the body of water;

the throat pipe comprises a throat pipe water inlet and a throat pipe water outlet, the throat pipe water inlet is covered above the spray pipe, and an acceleration water channel is formed between the spray pipe and the throat pipe;

the biochemical reaction area is arranged at the downstream of the secondary pre-anoxic area (2);

the sedimentation zone is arranged at the downstream of the biochemical reaction zone and is provided with a reactor water outlet;

at least one of the primary pre-anoxic zone (1), the secondary pre-anoxic zone (2), the biochemical reaction zone and the precipitation zone is provided with an exhaust valve.

2. The self-circulating dual AO biochemical integrated sewage processor of claim 1, wherein,

one end of the first water collecting pipe (27) is arranged above the throat pipe.

3. The self-circulating dual AO biochemical integrated sewage processor of claim 2, characterized in that,

the part of the first water collecting pipe (27) entering the primary pre-anoxic zone (1) is provided with a plurality of water inlet holes.

4. The self-circulating dual AO biochemical integrated sewage processor of claim 1, wherein,

at least one part of the spray pipe is arranged in a conical shape along the flowing direction of the water body.

5. The self-circulating dual AO biochemical integrated sewage processor of claim 4, characterized in that,

at least one part of the area of the throat pipe corresponding to the spray pipe is arranged in a conical shape.

6. The self-circulating dual AO biochemical integrated sewage processor of claim 1, wherein,

along the width direction of the primary preposed anoxic zone (1), the primary preposed anoxic zone (1) is divided into a plurality of first chambers (21), and the bottoms of the first chambers (21) are communicated;

a throat in the primary pre-anoxic zone (1) is positioned in the first chamber (21) in the middle;

the first chambers (21) positioned on two sides are communicated with the secondary pre-anoxic zone (2) through the first water collecting pipe (27).

7. The self-circulating dual AO biochemical integrated sewage processor of claim 1, wherein,

the secondary pre-anoxic zone (2) is divided into a plurality of second chambers (22) along the width direction of the secondary pre-anoxic zone (2), and the bottoms of the second chambers (22) are communicated;

the throat in the secondary pre-anoxic zone (2) is positioned in the middle second chamber (22);

the part of the first water collecting pipe (27) positioned in the secondary pre-anoxic zone (2) is communicated with a spray pipe in the secondary pre-anoxic zone (2);

the second chambers (22) positioned at two sides are communicated with the biochemical reaction area through second water collecting pipes (28).

8. The self-circulating dual AO biochemical integrated sewage processor of claim 7, wherein,

the biochemical reaction area comprises a primary reaction area (3) and a secondary reaction area (4) along the flowing direction of the water body;

the primary reaction zone (3) comprises a primary aerobic chamber (23) and a primary synchronous anoxic chamber (24) which are communicated;

the secondary reaction zone (4) comprises a secondary aerobic chamber (25) and a secondary synchronous anoxic chamber (26) which are communicated;

the second water collecting pipe (28) extends into the primary synchronous anoxic chamber (24), the primary aerobic chamber (23) is communicated with the secondary synchronous anoxic chamber (26) through a third water collecting pipe (29), and the secondary aerobic chamber (25) is communicated with the downstream sedimentation zone.

9. The self-circulating dual AO biochemical integrated sewage processor of claim 8, wherein,

the first-level aerobic chamber (23) comprises two symmetrical sides of the first-level synchronous anoxic chamber (24), and the third water collecting pipe (29) comprises a water inlet part connected with the first-level aerobic chamber (23) and a water outlet part connected with the second-level synchronous anoxic chamber (26).

10. The self-circulating dual AO biochemical integrated sewage processor of claim 9, wherein,

a first guide plate (17) is arranged on the top wall of each primary aerobic chamber (23);

a second guide plate (18) is arranged on the side wall of each primary aerobic chamber (23) close to the secondary reaction zone (4);

and a water body passing area is formed between the bottom of the first guide plate (17) and the plate surface of the second guide plate (18).

11. The self-circulating dual AO biochemical integrated sewage processor of claim 8, wherein,

the secondary aerobic chamber (25) is arranged around the outer side of the secondary synchronous anoxic chamber (26).

12. The self-circulating dual AO biochemical integrated sewage processor of claim 8, wherein,

aeration discs (15) are arranged at the bottoms of the primary aerobic chamber (23) and the secondary aerobic chamber (25);

the primary aerobic chamber (23) and the secondary aerobic chamber (25) are both internally provided with suspended fillers (16) suitable for the growth of microorganisms.

13. The self-circulating dual AO biochemical integrated sewage processor of claim 1, wherein,

the sedimentation zone is divided into a nitrifying liquid reflux chamber (5), a floc sedimentation compression chamber (6), a floc sedimentation chamber (7) and a filtering chamber (8) along the flowing direction of a water body;

the nitrifying liquid reflux chamber (5) is communicated with the primary preposed anoxic zone (1);

the filtering chamber (8) is positioned above the floc settling and compressing chamber (6) and the floc settling chamber (7), and the filtering chamber (8) is communicated with the water outlet of the reactor.

14. The self-circulating dual AO biochemical integrated wastewater processor of claim 13, wherein,

the nitrifying liquid reflux chamber (5) is communicated with the biochemical reaction area through an inverted V-shaped channel (14).

15. The self-circulating dual AO biochemical integrated wastewater processor of claim 13, wherein,

the device also comprises a nitrifying liquid reflux device (12), one end of the nitrifying liquid reflux device acts in the nitrifying liquid reflux chamber (5), and the other end of the nitrifying liquid reflux device is connected with the spray pipe in the primary pre-anoxic zone (1).

16. The self-circulating dual AO biochemical integrated wastewater processor of claim 13, wherein,

the settling zone also comprises at least one high-density floc collecting hopper (11) which is positioned between the nitrified liquid reflux chamber (5) and the floc settling and compressing chamber (6);

and one end of the floc circulating device (13) acts in the high-density floc collecting hopper (11), and the other end of the floc circulating device is connected with the spray pipe in the secondary pre-anoxic zone (2).

17. The self-circulating dual AO biochemical integrated wastewater processor of claim 13, wherein,

the settling zone also comprises a third guide plate (19), one end of the third guide plate is connected with the top wall of the settling zone, and the other end of the third guide plate extends to the bottom of the floc settling and compressing chamber (6).

18. The self-circulating dual AO biochemical integrated wastewater processor of claim 13, wherein,

also comprises a separation tube group (9);

the separation pipe group (9) is arranged above the floc settling and compressing chamber (6) and the floc settling chamber (7), and the separation pipe group (9) comprises a plurality of guide pipes.

19. The self-circulating dual AO biochemical integrated wastewater processor of claim 18,

the device also comprises a clear water collecting device (10) which is arranged above the separation pipe group (9) and is connected with the water outlet of the reactor.

20. The self-circulating dual AO biochemical integrated sewage processor of claim 1, wherein,

the top of the primary pre-anoxic zone (1) and the top of the secondary pre-anoxic zone (2) are arranged in a closed shape.

21. The self-circulating dual AO biochemical integrated wastewater processor of claim 16,

at least one of the floc settling and compressing chamber (6), the floc settling chamber (7) and the high-density floc collecting hopper (11) is provided with a sludge discharge device (20).

22. A water treatment system, comprising

The self-circulating dual AO biochemical integrated wastewater processor of any one of claims 1-21;

the water inlet system is connected with the water inlet of the reactor;

and the water purification system is connected with the water outlet of the reactor.

23. The water treatment system of claim 22,

further comprising: the sludge treatment system is connected with the sludge discharge device (20).

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