CN218642577U

CN218642577U - Biochemical pond of high-efficient sewage treatment

Info

Publication number: CN218642577U
Application number: CN202320200642.0U
Authority: CN
Inventors: 傅顺发; 张梅榕; 林春晖
Original assignee: Fujian Fengzhu Environmental Protection Co ltd
Current assignee: Fujian Fengzhu Environmental Protection Co ltd
Priority date: 2023-02-14
Filing date: 2023-02-14
Publication date: 2023-03-17
Anticipated expiration: 2033-02-14

Abstract

The utility model relates to a sewage treatment device field, concretely relates to biochemical pond of high-efficient sewage treatment, including the anoxic section, aerobic section and backwash tank, the anoxic section, aerobic section and backwash tank parallel arrangement, the anoxic section is including the preceding anoxic zone and the back anoxic zone that communicate in proper order, and the backwash tank goes out the water end and feeds through with the end of intaking in preceding anoxic zone, is equipped with the high speed agitator in the back anoxic zone, and the aerobic section is including feeding through in proper order, parallel arrangement's first good oxygen corridor and the good oxygen corridor of second, and the front end that first good oxygen corridor is close to the mouth of a river is equipped with the anaerobism extension district. Preceding anoxic zone and back anoxic zone pass through the partition wall and separate to overflow mouth intercommunication through the top can keep apart sharp-pointed debris and grit of big proportion and deposit in the anoxic zone in the front, avoids sharp-pointed debris and grit to get into that good oxygen section blocks up or destroys the aeration pipe, and back anaerobic zone and anaerobism extension district also can carry out denitrification reaction, have improved the length of sewage in anaerobic zone, promote the handling capacity of denitrification, and then improve denitrification efficiency.

Description

High-efficient sewage treatment biochemical pond

Technical Field

The utility model relates to a sewage treatment device field, specificly relate to a biochemical pond of high-efficient sewage treatment.

Background

The AO process is also called anoxic aerobic process, A (Anaerobic) is an anoxic section for denitrification; o (Oxic) is an aerobic section and is used for removing organic matters in water and removing phosphorus under the combined action of oxygen deficiency and oxygen deficiency. The process flow is simple, no carbon source needs to be added in the sewage treatment process, the raw sewage is used as the carbon source, the construction and operation costs are reduced, the denitrification is performed before and after, and the organic substrate of the raw sewage is used as the carbon source, so that the effect is good, the denitrification is sufficient, the denitrification residues can be further removed by arranging the aeration tank behind, the water quality of the treated water is improved, the integral structure is simple, the occupied area is small, and the alkalinity generated by the denitrification can compensate the alkalinity consumed in the nitrification process. However, the existing AO biochemical pond has a low denitrification rate, and if the denitrification efficiency is to be improved and the denitrification rate is to be reduced, the reflux ratio needs to be increased, so that the treatment capacity of the anoxic zone is insufficient, and in addition, large-specific-gravity sharp impurities or sand and stones in the anoxic zone easily enter the aerobic zone to block and break the aeration pipe.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a biochemical pond of high-efficient sewage treatment to solve the problem that provides in the background art.

In order to solve the technical problem, the utility model discloses a technical scheme as follows: the utility model provides a biochemical pond of high-efficient sewage treatment which characterized in that: including anoxic section, good oxygen section and backwash tank, anoxic section, good oxygen section and backwash tank parallel arrangement, the anoxic section is including preceding anoxic zone and the back anoxic zone that communicates in proper order, the end of intaking in preceding anoxic zone is equipped with the water inlet, the end of intaking in backwash tank is equipped with a backwash pipe, the backwash tank goes out the water end and feeds through with the end of intaking in preceding anoxic zone, be equipped with the high speed agitator in the back anoxic zone, good oxygen section is including first good oxygen corridor and the good oxygen corridor of second that communicates in proper order, parallel arrangement, be equipped with the mouth of a river on the partition wall between the end of intaking in back anoxic zone and first good oxygen corridor, first good oxygen corridor is close to the front end of crossing the mouth of a river and is equipped with the anaerobism extension zone, the play water end of the good oxygen corridor of second is equipped with the delivery port.

And an overflow port is arranged at the top of the partition wall between the front anoxic zone and the rear anoxic zone.

And three overflow ports of the partition wall between the front anoxic zone and the rear anoxic zone are arranged.

The reflux groove is arranged at the top of the partition wall, which is far away from one side of the aerobic section, of the anoxic section, and the water outlet hole of the water outlet end of the reflux groove is located at the bottom of the reflux groove.

And a return well is arranged between the water outlet end of the return tank and the water inlet end of the front anoxic zone.

And the top of the backflow well is provided with a water through hole communicated with the water outlet end of the backflow groove, and the bottom of the backflow well is provided with a water through hole communicated with the water inlet end of the front anoxic zone.

The water passing opening between the back anoxic zone and the water inlet end of the first aerobic gallery is positioned at the bottom of the partition wall.

And a plug flow stirrer is arranged in the front anoxic zone.

Two high-speed stirrers are arranged in the back anoxic zone.

Be equipped with air supply pipe and aeration pipe in the good oxygen section, aeration pipe and air supply pipe junction are equipped with the valve, the water hole of crossing of first good oxygen corridor and the good oxygen corridor of second is located the bottom of partition wall.

As can be seen from the above description, the high-efficiency sewage treatment biochemical pool provided by the utility model has the following beneficial effects: the front anoxic zone and the rear anoxic zone are separated by a partition wall and are communicated by an overflow port at the top, so that sharp impurities and sand stones with large specific gravity can be isolated and precipitated in the front anoxic zone, and the sharp impurities and sand stones are prevented from entering the aerobic section to block or damage an aeration pipe; the rear anaerobic zone can carry out denitrification reaction, and the anaerobic extension zone can also be adjusted according to actual requirements so as to improve the length of sewage in the anaerobic zone, improve the treatment capacity of denitrification and further improve the denitrification efficiency; the anaerobic extension zone does not need a plug flow stirrer to plug flow, and the water flow in the front anoxic zone and the rear anoxic zone can naturally flow under the push of the water flow, so that the energy consumption is saved; the circulation mixed liquid in the backwash tank enters the backwash well through the water holes and enters the front anoxic zone through the backwash well, so that the circulation mixed liquid enters the front anoxic zone from the bottom and is fully mixed with the sewage in the front anoxic zone, and the denitrification efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of the high-efficiency sewage treatment biochemical tank of the utility model.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in the figure, the high-efficiency sewage treatment biochemical pool comprises an anoxic section 1, an aerobic section 2 and a reflux groove 3, wherein the anoxic section 1, the aerobic section 2 and the reflux groove 3 are arranged in parallel.

The anoxic section 1 comprises a front anoxic zone 11 and a rear anoxic zone 12 which are sequentially communicated, a water inlet 111 is arranged at the water inlet end of the front anoxic zone 11, the water inlet end of the reflux tank 3 is communicated with the backflow pipe 8, the water outlet end of the reflux tank 3 is communicated with the water inlet end of the front anoxic zone 11, a high-speed stirrer 121 is arranged in the rear anoxic zone 12, the aerobic section 2 comprises a first aerobic gallery 21 and a second aerobic gallery 22 which are sequentially communicated and arranged in parallel, a water passing port is arranged on a partition wall between the water inlet end of the rear anoxic zone 12 and the water inlet end of the first aerobic gallery 21 and is positioned at the bottom of the partition wall, an anaerobic extension zone 211 is arranged at the front end of the first aerobic gallery 21 close to the water passing port, a water outlet 221 is arranged at the water outlet end of the second aerobic gallery 22, the outlet water of the water outlet 221 sequentially enters a secondary sedimentation tank and a mud distribution well, and mixed liquid in the mud distribution well is conveyed back to the backflow pipe 8 through a backflow pump to provide circulating mixed liquid for the reflux tank 3.

The anoxic section 1 is used for denitrification, the aeration zone of the aerobic section 2 is used for removing organic matters in water, and the anoxic section 1 and the aerobic section 2 together remove phosphorus; the high-speed stirrer 121 in the back anoxic zone 12 prevents sludge from settling, so that the sludge is suspended in the tank body, dissolved oxygen is prevented from being increased, and denitrification reaction is better performed; the aeration pipe 7 of the first aerobic corridor 21 can be partially closed as required, the part for closing the aeration pipe is the anaerobic extension area 211, other areas for opening the aeration valve of the aerobic section 2 are aeration areas, the length of the anaerobic extension area 211 can account for 1/4 to 1/2 of the length of the first aerobic corridor 21, when the nitrogen content in the sewage is high, the length of the anaerobic extension area 211 can be increased, the length of the anaerobic extension area 211 can be adjusted as required by closing a partial valve, and the length of the actual anaerobic area can be prolonged by the back anoxic area 12 and the anaerobic extension area 211 of the first aerobic corridor 21.

The top of the partition wall between the front anoxic zone 11 and the rear anoxic zone 12 is provided with an overflow port 112. The front anoxic zone 11 and the rear anoxic zone 12 are separated by a partition wall and are communicated through water passing holes at the top, sewage in the front anoxic zone 11 overflows to the rear anoxic zone 12 through an overflow port 112 at the top, the partition wall between the front anoxic zone 11 and the rear anoxic zone 12 can separate and precipitate sharp impurities and sand stones with large specific gravity in the front anoxic zone 11 to prevent the sharp impurities and the sand stones from entering the aerobic section 2 to block or damage an aerator pipe, the rear anaerobic zone 12 and the anaerobic extension zone 211 can also perform denitrification reaction, the length of the sewage in the anaerobic zone is increased, the treatment capacity of denitrification is increased, the denitrification efficiency is increased, the sewage entering the rear anoxic zone 12 directly flows to the anaerobic extension zone 211 through the water passing holes at the bottom, no partition wall is arranged between the anaerobic extension zone 211 and the aeration zone of the aerobic section 2, the flow speed of the sewage can be increased, the denitrification speed is increased, no push flow stirrer 5 is needed in the anaerobic extension zone 211, the water flow in the front anoxic zone 11 and the rear anoxic zone 12 is pushed, and the water flow under the energy consumption of the anaerobic section 2 is saved, and the natural flow is saved; because the post-anaerobic zone 12 and the anaerobic extension zone 211 improve the denitrification treatment capacity, the proportion of the internal circulation liquid can be improved, and the nitrate content in the sewage discharge can be further reduced, it should be noted that the proportion of the length and the width of the anoxic section 1 and the aerobic section 2 in the figure is only used as an indication, and the actual length of the anoxic tank needs to be adjusted according to actual needs.

Three overflow ports 112 are arranged on the partition wall between the front anoxic zone 11 and the rear anoxic zone 12.

The reflux groove 3 is arranged at the top of the partition wall at one side of the anoxic section 1 far away from the aerobic section 2, and the water outlet hole at the water outlet end of the reflux groove 3 is positioned at the bottom of the reflux groove 3. The reflux tank 3 is positioned at the top of the sewage treatment tank, the bottom of the back anoxic zone 12 is communicated with the aerobic section 2, and the denitrifying bacteria in the front anoxic zone 11, the back anaerobic zone 12 and the anaerobic extension zone 211 utilize organic matters in the sewage as carbon sources to reduce a large amount of NO3-N and NO2-N in the mixed solution into N2 to be released to the air, so that the BOD5 concentration is reduced, and the NO3-N concentration is greatly reduced.

A return well 4 is arranged between the water outlet end of the return tank 3 and the water inlet end of the front anoxic zone 11. The top of the return well 4 is provided with a water through hole communicated with the water outlet end of the return tank 3, and the bottom is provided with a water through hole communicated with the water inlet end of the front anoxic zone 11. Circulation mixed liquor in the return flume 3 enters the return shaft 4 through the water holes, and enters the front anoxic zone 11 through the return shaft 4, so that the circulation mixed liquor enters the front anoxic zone 11 from the bottom, and is fully mixed with sewage in the front anoxic zone 11, and the denitrification efficiency is improved.

The water passing opening between the back anoxic zone 12 and the water inlet end of the first aerobic gallery 21 is positioned at the bottom of the partition wall. The back anoxic zone 12 is communicated with the first aerobic gallery 21 through the water passing port.

A plug flow stirrer 5 is arranged in the front anoxic zone 11. Mud in preceding anoxic zone 11 avoids deposiing under the stirring of plug flow agitator 5, wherein the water hole of crossing of preceding anoxic zone 11 is located the partition wall top, the anoxic zone separates with back anoxic zone before the partition wall will be, the oxygen deficiency state in the anoxic zone 11 before guaranteeing, ensure denitrification's efficiency, sewage and silt in preceding anoxic zone 11 upwards flow under the stirring of plug flow agitator 5, and through water hole overflow to back anoxic zone 12, big proportion impurity then deposits to the bottom, can not get into good oxygen section 2.

Two high-speed stirrers 121 are arranged in the back anoxic zone 12, and the direction of the main shaft of the high-speed stirrers 121 is adjustable. The high-speed stirrers 121 adjust the direction of the main shaft according to real-time needs, and at ordinary times, one of the two high-speed stirrers 121 is used for standby, and the two high-speed stirrers can be opened simultaneously when necessary, so that the stirring effect is improved.

An air supply pipe 6 and an aeration pipe 7 are arranged in the aerobic section 2, a valve is arranged at the joint of the aeration pipe 7 and the air supply pipe 6, and water passing holes of the first aerobic gallery 21 and the second aerobic gallery 22 are positioned at the bottom of the partition wall. The air supply pipe 6 is communicated with the blower, so that the part of the aerobic section 2 is not aerated through part of valves, the part of the aerobic section 2 is used as an anaerobic zone, and then the proportion of the aerobic zone and the anaerobic zone is adjusted according to actual needs, so that the sewage treatment tank achieves the optimal treatment working condition.

In the description of the present invention, it is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

In the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "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 simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention, and the contents not described in detail in the present specification belong to the prior art that is well known to those skilled in the art.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected" and "disposed" are to be interpreted broadly, and may be, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed; the utility model discloses in provide only supply the reference with the model of electrical apparatus. For those skilled in the art, different types of electrical appliances with the same function can be replaced according to actual use conditions, and for those skilled in the art, the specific meaning of the above terms in the present invention can be understood in specific situations.

The aforesaid does only the utility model discloses a plurality of embodiment, nevertheless the utility model discloses a design concept is not limited to this, and all utilize this to think about right the utility model discloses carry out immaterial change, all shall belong to the infringement the action of the scope of protection of the utility model.

Claims

1. The utility model provides a biochemical pond of high-efficient sewage treatment which characterized in that: including anoxic section, good oxygen section and backwash tank, anoxic section, good oxygen section and backwash tank parallel arrangement, the anoxic section is including the preceding anoxic zone and the back anoxic zone that communicate in proper order, the end of intaking in preceding anoxic zone is equipped with the water inlet, the end of intaking in backwash tank is equipped with a backwash pipe, the backwash tank goes out the water outlet end and the end intercommunication of intaking in preceding anoxic zone, be equipped with the high speed agitator in the back anoxic zone, good oxygen section is including the first good oxygen corridor and the good oxygen corridor of second that communicate in proper order, parallel arrangement, be equipped with the mouth of a river on the partition wall between the end of intaking in back anoxic zone and first good oxygen corridor, the front end that first good oxygen corridor is close to the mouth of a river is equipped with the anaerobism extension zone, the play water end of the good oxygen corridor of second is equipped with the delivery port, the top of partition wall between preceding anoxic zone and the back anoxic zone is equipped with the overflow mouth.

2. The biochemical pond of high-efficiency sewage treatment according to claim 1, characterized in that: and three overflow ports of the partition wall between the front anoxic zone and the rear anoxic zone are arranged.

3. The biochemical pond of high-efficiency sewage treatment according to claim 1, characterized in that: the reflux groove is arranged at the top of the partition wall, which is far away from one side of the aerobic section, of the anoxic section, and the water outlet hole of the water outlet end of the reflux groove is located at the bottom of the reflux groove.

4. The biochemical pond of high-efficiency sewage treatment according to claim 1, characterized in that: and a return well is arranged between the water outlet end of the return tank and the water inlet end of the front anoxic zone.

5. The biochemical pond of high-efficient sewage treatment of claim 4, characterized by that: and the top of the backflow well is provided with a water through hole communicated with the water outlet end of the backflow groove, and the bottom of the backflow well is provided with a water through hole communicated with the water inlet end of the front anoxic zone.

6. The biochemical pond of high-efficiency sewage treatment according to claim 1, characterized in that: the water passing opening between the back anoxic zone and the water inlet end of the first aerobic gallery is positioned at the bottom of the partition wall.

7. The biochemical pond of high-efficiency sewage treatment according to claim 1, characterized in that: and a plug flow stirrer is arranged in the front anoxic zone.

8. The biochemical pond of high-efficiency sewage treatment according to claim 1, characterized in that: two high-speed stirrers are arranged in the back anoxic zone.

9. The biochemical pond of high-efficiency sewage treatment according to claim 1, characterized in that: be equipped with air supply pipe and aeration pipe in the good oxygen section, aeration pipe and air supply pipe junction are equipped with the valve, the water hole of crossing of first good oxygen corridor and the good oxygen corridor of second is located the bottom of partition wall.