CN111635009A - Improved biochemical pool based on Baileke pool body - Google Patents
Improved biochemical pool based on Baileke pool body Download PDFInfo
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- CN111635009A CN111635009A CN202010648629.2A CN202010648629A CN111635009A CN 111635009 A CN111635009 A CN 111635009A CN 202010648629 A CN202010648629 A CN 202010648629A CN 111635009 A CN111635009 A CN 111635009A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000005192 partition Methods 0.000 claims abstract description 63
- 238000005273 aeration Methods 0.000 claims abstract description 50
- 238000005276 aerator Methods 0.000 claims abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 18
- 238000004062 sedimentation Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000010802 sludge Substances 0.000 claims description 46
- 238000007872 degassing Methods 0.000 claims description 23
- 238000010992 reflux Methods 0.000 claims description 17
- 239000011150 reinforced concrete Substances 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 101150065603 PLEK gene Proteins 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims 1
- 239000010865 sewage Substances 0.000 abstract description 12
- 210000005056 cell body Anatomy 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 230000001131 transforming effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 235000003403 Limnocharis flava Nutrition 0.000 description 1
- 244000278243 Limnocharis flava Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000037072 sun protection Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- Environmental & Geological Engineering (AREA)
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- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses an improved biochemical pool based on a Pleke pool body, which comprises: the inside of the pool body is provided with an anaerobic pool, an aerobic pool, a sedimentation pool and a Braek pool body of a stable area which are sequentially communicated from front to back, wherein the aerobic pool is a biological pool for removing a bottom geomembrane; further comprising: the concrete inner shell, indulge partition wall, second water inlet, dive mixer, first horizontal partition wall, second horizontal partition wall, third horizontal partition wall, mixed liquid return well, wall pump, interior return line, many vertical stirrers, many aerators, mud return canal, regulation formula aeration equipment, agitator and suction dredge. Through transforming traditional baileke cell body into A2O cell body, change the sewage flow state in the original baileke cell body from complete mixing formula into plug flow, the stable quality of play water reaches national standard one-level A standard, has solved traditional baileke technology and has gone out the problem that water TN can not stably reach standard.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to an improved biochemical tank based on a Baileke tank body.
Background
The Biolak process, also known as the suspended chain aeration process, is a wastewater treatment process introduced from Germany. The aeration tank is mainly characterized in that the aeration tank adopts a soil tank anti-seepage structure, an HDPE anti-seepage film is laid at the bottom of the tank, and the aeration device adopts a floating moving chain type aeration system without fixation. The Biochemical pool of the Baileke process comprises an anaerobic pool and an aerobic pool, and a plurality of anoxic and aerobic alternate states can be formed by the suspension chain in a swinging state in the aerobic pool to realize the denitrification function. The effluent of the Baileke process can stably reach the first-class B standard of pollutant discharge Standard of urban Sewage treatment plant (GB 18918-2002).
With the increasing strictness of environmental requirements, the upgrading of the discharge standard of sewage treatment plants from national standard grade B to grade A has become the mainstream trend of the environmental protection industry, and the local standard of the discharge standard of individual provincial cities is more strict and is close to the four types of water on the ground surface. The discharge standard of TN effluent reaches the first-class A or even higher standard, and the treatment requirements cannot be met by adopting the traditional Baileke treatment process. Such as: the tank body structure of the existing common pallek process is shown in figure 1, and a plurality of A/O sections are arranged in the same structure, so that sewage is subjected to multiple anoxic and aerobic processes, the sludge activity is enhanced, and the denitrification effect is achieved. The conventional Biolak process system is formed by jointly building three parts, namely a biological tank comprising an anaerobic zone and an aeration zone, a sedimentation tank, a stabilization tank comprising a secondary aeration zone and the like, wherein the aeration tank and the stabilization tank can adopt an earth tank anti-seepage structure.
The existing tank body structure's pleck process has at least the following disadvantages: 1) the denitrification effect is difficult to guarantee: the anoxic zone and the anaerobic zone of the Brazil process are not strictly separated and are close to each other, the anoxic zone and the aerobic zone are formed only by alternate aeration and non-aeration of an aeration chain, and because of the flowing of water, the close distance between the anoxic zone and the aerobic zone and the swinging of the aeration chain, oxygen in the aerobic zone is easily brought into the anoxic zone and an environment with low dissolved oxygen concentration or oxygen deficiency is difficult to form, so the Brazil process has a certain denitrification effect, but has great difficulty in achieving stable denitrification, and especially for projects requiring first-level A and higher standards of effluent quality, the TN up-to-standard discharge is difficult to ensure.
Disclosure of Invention
Based on the problems in the prior art, the invention aims to provide an improved biochemical pool based on a Baileke pool body, which can solve the problem that TN of the effluent can not stably reach the standard in the Baileke process of the existing pool body structure.
The purpose of the invention is realized by the following technical scheme:
the embodiment of the invention provides an improved biochemical pool based on a Pleke pool body, which comprises: the inside of the pool body is provided with an anaerobic pool, an aerobic pool, a sedimentation pool and a Braek pool body of a stable area which are sequentially communicated from front to back, wherein the aerobic pool is a biological pool for removing a bottom geomembrane;
further comprising: the system comprises a concrete inner shell, a longitudinal partition wall, a second water inlet, a submersible mixer, a first transverse partition wall, a second transverse partition wall, a third transverse partition wall, a mixed liquid backflow well, a wall-penetrating pump, an inner backflow pipeline, a plurality of vertical mixers, a plurality of aerators, a sludge backflow channel, an adjustable aeration device, a mixer and a sludge suction machine; wherein,
the concrete inner shell is fixedly paved on the side slopes at the bottom and around the bottom in the biological pond of the Baileke pond body;
the longitudinal partition wall is longitudinally arranged in an anaerobic tank of the Plecke tank body and longitudinally divides the anaerobic tank into an anaerobic zone and a first anoxic zone, and the anaerobic zone is communicated with the first anoxic zone through a first water through hole arranged on the longitudinal partition wall;
the tank body at the front end of the first anoxic zone is provided with the second water inlet;
the submersible stirrer is arranged in the first anoxic zone;
the first transverse partition wall, the second transverse partition wall and the third transverse partition wall are sequentially arranged in an aerobic tank of the Baileke tank body at intervals from front to back, and the aerobic tank is divided into a second anoxic zone, a first aeration zone, a second aeration zone and a degassing zone which are sequentially communicated from front to back;
the mixed liquid return well is arranged at the tail end of the degassing zone and is connected to the first anoxic zone through the wall-penetrating pump and the internal return pipeline, and the internal return pipeline is arranged on the inner side of the peripheral slope at the bottom of the Baileke tank body;
the plurality of vertical stirrers are distributed and arranged in the second anoxic zone according to the flow direction of water flow;
the plurality of aerators are distributed at the bottom in the first aeration zone and the second aeration zone;
the adjustable aeration device is arranged at the front end of the degassing area;
the stirrer is arranged in the middle part in the degassing area;
the sludge suction machine is arranged in the sedimentation tank;
the sludge return channel is an open channel arranged on the side wall of the Plek tank body, one end of the sludge return channel is connected with the sludge suction machine arranged in the sedimentation tank, the other end of the sludge return channel is provided with a first sludge return port and a second sludge return port respectively, the second sludge return port is connected with the anaerobic zone, and the first sludge return port is connected with the second anoxic zone.
According to the technical scheme provided by the invention, the improved biochemical pool based on the Baileke pool body provided by the embodiment of the invention has the beneficial effects that:
the anaerobic tank of the Baileke tank body is divided into an anaerobic zone and a first anoxic zone which are communicated in sequence by arranging a longitudinal partition wall with a first water through hole in the anaerobic tank; the aerobic tank is divided into a second anoxic zone, a first aeration zone, a second aeration zone and a degassing zone by the first, second and third transverse partition walls, so that the traditional Baileke tank body is transformed into an A2O tank body, the flow state of sewage in the original Baileke tank body is changed from a completely mixed type to a plug flow, short flow of sewage is avoided to the greatest extent, and the reaction is more sufficient; the improved biological tank is used for treating municipal sewage, the quality of the outlet water stably reaches the national standard first-level A standard, the deep treatment is added on the basis, the standard discharge of surface level fourth-class water and quasi third-class water can be realized, and the problem that the outlet water TN of the traditional Baileke process can not stably reach the standard is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic plan view of an improved biochemical pool based on a Pleke pool body according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an apparatus configuration of an improved biochemical tank based on a Pleke tank body according to an embodiment of the present invention;
the parts corresponding to each mark in the figure are: 1-baileke cell body; 2-a reinforced concrete bottom plate; 3-a longitudinal partition wall; 4-an anaerobic zone; 5-a first anoxic zone; 6-a first water through hole; 7-a second water inlet; 8-total water inlet channel; 9-total water inlet; 10-a water inlet well; 11-original water inlet; 12-a first diaphragm wall; 13-a second diaphragm wall; 14-a third diaphragm wall; 15-a second anoxic zone; 16-a first aeration zone; 17-a second aeration zone; 18-a degassing zone; 19-a second water through hole; 20-a first water passage; 21-a second water passage; 22-mixed liquor return well; 23-a through-the-wall pump; 24-an internal return line; 25-vertical stirrer; 26-a plate aerator; 27-an adjustable aeration device; 28-a stirrer; 29-sludge return channel; 30-external reflux pump; 31-a sedimentation tank; 32-a stable region; 33-a submersible mixer; 34-water outlet channel; 35-a water outlet well; 36-a water outlet; 37-a suction dredge; 38-a first sludge recirculation port; 39-second sludge recirculation port.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the specific contents of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
As shown in fig. 1 and 2, an embodiment of the present invention provides an improved biochemical pool based on a berek pool body, including: the inside of the pool body is provided with an anaerobic pool, an aerobic pool, a sedimentation pool and a Braek pool body of a stable area which are sequentially communicated from front to back, wherein the aerobic pool is a biological pool for removing a bottom geomembrane;
further comprising: the system comprises a concrete inner shell, a longitudinal partition wall, a second water inlet, a submersible mixer, a first transverse partition wall, a second transverse partition wall, a third transverse partition wall, a mixed liquid backflow well, a wall-penetrating pump, an inner backflow pipeline, a plurality of vertical mixers, a plurality of aerators, a sludge backflow channel, an adjustable aeration device, a mixer and a sludge suction machine; wherein,
the concrete inner shell is fixedly paved on the side slopes at the bottom and around the bottom in the biological pond of the Baileke pond body;
the longitudinal partition wall is longitudinally arranged in an anaerobic tank of the Plecke tank body and longitudinally divides the anaerobic tank into an anaerobic zone and a first anoxic zone, and the anaerobic zone is communicated with the first anoxic zone through a first water through hole arranged on the longitudinal partition wall;
the tank body at the front end of the first anoxic zone is provided with the second water inlet;
the submersible stirrer is arranged in the first anoxic zone;
the first transverse partition wall, the second transverse partition wall and the third transverse partition wall are sequentially arranged in an aerobic tank of the Baileke tank body at intervals from front to back, and the aerobic tank is divided into a second anoxic zone, a first aeration zone, a second aeration zone and a degassing zone which are sequentially communicated from front to back;
the mixed liquid return well is arranged at the tail end of the degassing zone and is connected to the first anoxic zone through the wall-penetrating pump and the internal return pipeline, and the internal return pipeline is arranged on the inner side of the peripheral slope at the bottom of the Baileke tank body;
the plurality of vertical stirrers are distributed and arranged in the second anoxic zone according to the flow direction of water flow;
the plurality of aerators are distributed at the bottom in the first aeration zone and the second aeration zone;
the adjustable aeration device is arranged at the front end of the degassing area;
the stirrer is arranged in the middle part in the degassing area;
the sludge suction machine is arranged in the sedimentation tank;
the sludge return channel is an open channel arranged on the side wall of the Plek tank body, one end of the sludge return channel is connected with the sludge suction machine arranged in the sedimentation tank, the other end of the sludge return channel is provided with a first sludge return port and a second sludge return port respectively, the second sludge return port is connected with the anaerobic zone, and the first sludge return port is connected with the second anoxic zone.
In the improved biochemical pool, the reinforced concrete bottom plate is composed of a C15 cushion layer with the thickness of 100mm and a C30 reinforced concrete bottom plate with the thickness of 250mm, wherein the C30 reinforced concrete bottom plate is internally provided with 14@200 double-layer bidirectional reinforcing bars.
Furthermore, the concrete inner shell is composed of a geomembrane paved on a side slope at the periphery of the bottom of the aerobic tank and a C20 plain concrete protective layer sprayed on the surface of the geomembrane. Preferably, the steel wire mesh is made of 8 steel wire mesh sheets with the spacing of 200X 200 mm.
In foretell improvement biochemical pond, first diaphragm wall, second diaphragm wall and third diaphragm wall interval in proper order after to set up in the past in the good oxygen pond of balek cell body, will in the good oxygen pond in the past to the back separate for the second anoxic zone, first aeration zone, second aeration zone and the degasification district that communicate in proper order be:
the first transverse partition wall is transversely arranged in an aerobic tank of the Pleke tank body, and the two transverse ends of the first transverse partition wall are fixedly connected with tank walls on two sides of the aerobic tank;
the second transverse partition wall is transversely arranged in an aerobic pool of the Baileke pool body, one end of the second transverse partition wall is fixedly connected with one side pool wall of the aerobic pool, and the other end of the second transverse partition wall and the other side pool wall of the aerobic pool form a first water flow channel at intervals;
the third transverse partition wall is transversely arranged in an aerobic tank of the Baileke tank body, one end of the third transverse partition wall is fixedly connected with the other side wall of the aerobic tank, and the other end of the third transverse partition wall and one side wall of the aerobic tank form a second water flow channel at intervals;
the second water passing holes, the first water flow channels and the second water flow channels of the first transverse partition wall are arranged in a staggered mode, and folded water flow channels are formed among the second anoxic zone, the first aeration zone, the second aeration zone and the degassing zone.
The improved biochemical pool also comprises: the total water inlet channel is provided with a total water inlet and is arranged at the front end of the Baileke tank body and is respectively connected with the water inlet of the anaerobic zone and the second water inlet of the first anoxic zone through a water distribution valve.
In the above improved biochemical pool, the plurality of vertical stirrers are distributed and arranged in the second anoxic zone according to the flow direction of water flow:
the two vertical mixers are arranged at the water inlet of the second anoxic zone, and the stirring paddles of the two vertical mixers rotate anticlockwise;
the other two vertical mixers are arranged at the water outlet of the second anoxic zone, and the stirring paddles of the other two vertical mixers rotate clockwise. The mode of setting the rotating direction and the rotating speed of the impeller of the stirrer according to the water inlet and outlet directions of the second anoxic zone ensures the full mixing of the sewage and the sludge in the second anoxic zone and the good flow state of the sewage.
In the improved biochemical pool, the mixed liquid discharge port of the inner reflux pipeline is arranged in the middle of the side slope and is arranged at the opposite angle with the submersible mixer arranged in the first anoxic zone. This kind of arrangement for former first water inlet is intake, anaerobic zone is intake, the backward flow mixed liquid is fully mixed in this region, reduces the "dead zone" that the side slope structure formed, improves the denitrogenation efficiency in first anoxic zone, and the mixed liquid discharge port passes the geotechnological cloth part of lateral wall can be made the turn-up waterproof.
In the improved biochemical pool, the suction dredge is a truss vehicle type suction dredge; the suction dredge is provided with three axial-flow pumps with the power of 5.5 kilowatts as external reflux pumps.
The sludge return channel is used for returning sludge, the return ratio is less than or equal to 100%, the return sludge starting end of the sludge return channel is a sludge suction pump of the sedimentation tank, the sludge is pumped to the sludge return channel and is sent to the anaerobic tank and the second anoxic zone.
The improved biochemical pool also comprises: the light steel structure blower room is arranged at the position of a biochemical pool channel of the Baileke pool body, a window of the light steel structure blower room is provided with a dust screen, and a sun-shading curtain and a water cooling fan are arranged inside the light steel structure blower room.
In the improved biochemical tank, the aerator adopts a plate aerator or a tube aerator. Plate aerators are preferred. The aerator is arranged on the reinforced concrete bottom plate, so that the oxygen transfer efficiency is improved, and the oxygen charging and aeration effects of the slope part of the aerobic zone are improved.
In the improved biochemical pool, the rear end of the stable area is provided with a water outlet channel, the tail end of the water outlet channel is provided with a water outlet well, and the water outlet well is connected with a water outlet.
In foretell improvement biochemical pond, through setting up first water inlet, cooperation valve control can realize the multiple spot intaking in first anoxic zone and anaerobic zone, and first water inlet 1 (gets into first anoxic zone 1) sets up 25% ~ 30% with former water inlet (getting into anaerobic zone) inflow ratio: 75 to 70 percent, fully utilizes the carbon source of the inlet water and reduces the adding amount of the carbon source.
In the above-mentioned improvement biochemical pond, in order to guarantee the stability of internal reflux pipeline, in 1: 1.3 set up slope lateral wall excavation second grade platform, set up concrete pipe support on it in order to guarantee the stability of internal reflux pipeline at the lateral wall. The internal reflux pipe is used for refluxing nitrifying liquid (internal reflux), the reflux ratio is 200-400%, and the reflux starting end is lifted by a reflux pump (namely a wall-through pump) at the tail end of the aerobic pool and sent to the first anoxic zone.
In the improved biochemical pool, the front end of the degassing area is provided with a regulating aeration device (the regulating aeration device can be selectively opened or closed independently of an aerator of the aerobic area), the middle section of the degassing area is provided with a stirrer, and preferably, the stirrer adopts a plug flow stirrer; the degassing area can be used for starting or stopping aeration according to the COD (chemical oxygen demand) of the inlet water, reducing the dissolved oxygen at the tail end and reducing the adverse effect of overhigh dissolved oxygen of the reflux mixed liquor on denitrification reaction.
The embodiments of the present invention are described in further detail below.
The improved biochemical pool is based on the traditional Baileke pool body, is beneficial to the dam body structure of the traditional Baileke pool body, and is additionally provided with a reinforced concrete bottom plate and a concrete inner shell inside the aerobic pool. The specific method comprises the following steps: and (3) completely removing the original geomembrane at the bottom of the aerobic tank, excavating to the designed depth, paving a 100-thick C20 cushion layer and 250-thick C35 reinforced concrete bottom plate at the bottom, and forming a 14@200 double-layer bidirectional reinforcing bar to form the reinforced concrete bottom plate. Considering that the lateral wall atress is different from perpendicular wall, make full use of the advantage of side slope atress, refer to the river course side slope design, set up the side slope into 1: 1.3, no steel bar is arranged on the side slope, an anti-seepage effect is realized by laying a geomembrane, and a protective layer is formed outside by spraying C20 plain concrete to serve as a concrete inner shell.
Setting a first anoxic zone: longitudinally arranging a longitudinal partition wall with a first water through hole in an anaerobic tank of the original Pleek tank body, and dividing the original anaerobic tank into an anaerobic zone and a first anoxic zone which are communicated;
setting a second anoxic zone: the reinforced concrete bottom plate is arranged at the bottom in the aerobic tank, so that transverse partition walls are more convenient to arrange, and the structural safety of the transverse partition walls can be ensured, the first transverse partition walls, the second transverse partition walls and the third transverse partition walls are sequentially arranged on the reinforced concrete bottom plate in the aerobic tank from front to back at intervals to form a second anoxic zone, a first aeration zone, a second aeration zone and a degassing zone, the positions of the transverse partition walls can be flexibly arranged as required, and the sizes of all reaction zones can be reasonably distributed according to the designed retention time; set up vertical mixer in the second anoxic zone that increases newly, through control mixer direction of rotation (see in fig. 2, the end mixer anticlockwise rotation of intaking in the second anoxic zone, play water end mixer clockwise rotation) and regulation rotational speed (low-speed, rotational speed control range be 10 ~ 20r/min), can realize that sewage can the intensive mixing in the second anoxic zone that has the slope structure, effectively avoid the short-circuit, improve denitrification's efficiency, guarantee that TN gets rid of the effect. The power of each vertical stirrer is only 4kw, and compared with the conventional A2O process which adopts a high-speed small impeller submersible propeller, the stirring energy consumption of the first anoxic zone is greatly reduced; setting an internal reflux assembly: the mixed liquid backflow well is arranged at the tail end of the degassing area, the wall-penetrating pump is arranged, the inner side of the side slope is provided with the inner backflow pipeline, the inner backflow pipeline is encapsulated by concrete to ensure the safety and the stability of the pipeline structure, backflow liquid is led to the first anoxic area at the front end through the inner backflow component, the inner backflow component can realize inner backflow under the condition that the lift of the inner backflow pump is only 0.8 meter, and the energy consumption of the inner backflow is saved to the maximum extent; and, increase the internal reflux, has improved the total nitrogen and got rid of the efficiency.
All adopt 5.5kW axial-flow pump with three outer backwash pumps of the mud pump of sedimentation tank, the cooperation sets up the outer backward flow sludge pipe on the cell body lateral wall, compares traditional sedimentation tank mud pump and adopts 3 outer backwash pumps of 15kW, reduces outer backward flow energy consumption by a wide margin.
The air blower room with the light steel structure is arranged at the position of the corridor of the aerobic pool, the air pipeline is arranged simply, the window is additionally provided with the dustproof net, and the sunshade curtain and the water cooling fan are arranged inside the window, so that the structure is simple and firm, a plurality of details such as dust prevention, freeze prevention, cooling, sun protection and the like are fully considered, and the one-time investment is greatly reduced. The air blower room not only ensures the operating environment of the air blower, but also solves the problem that the air blower room with the traditional frame structure cannot be arranged on a biochemical pool channel, and also avoids the problem that the air blower room is arranged below a dam body and is flooded in rainy seasons.
According to the improved biochemical tank, the reinforced concrete bottom plate of the concrete inner shell is arranged at the bottom of the aerobic tank, so that the paleonk tank body with the geotextile structure which is not suitable for being modified can be provided with the concrete partition wall more conveniently, the aerator at the bottom is installed more conveniently, the problem of poor structural safety of the dam body such as seepage prevention, earthquake prevention and the like is solved, and long-term stable operation is ensured; can improve on the baileke cell body basis of traditional baileke technology and obtain, reform transform traditional baileke cell body into A2O cell body, adopt this improvement biological pond to handle municipal sewage, go out water quality of water can stably reach national standard one-level A standard, increase advanced treatment on this basis and can realize that the four types of water of earth's surface level, three types of water discharge up to standard of accuracy, solved the problem that traditional baileke technology goes out water TN and can not stably reach standard, solved that traditional baileke technology secondary sedimentation tank sedimentation effect is not good, the problem that SS exceeds standard. The utility model provides a biochemical pond of improvement, specially adapted reforms transform on traditional hundred lenk cell body basis, is applicable to and reforms transform a large amount of existing hundred lenk cell bodies that can't the operation up to standard need a lot of to reform transform, has very wide popularization and reference meaning
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An improved biochemical pool based on a Pleke pool body, comprising: the inside of the pool body is provided with an anaerobic pool, an aerobic pool, a sedimentation pool and a Baileke pool body of a stable area which are sequentially communicated from front to back, and the pool body is characterized in that the aerobic pool is a biological pool with a bottom geomembrane removed;
further comprising: the system comprises a concrete inner shell, a longitudinal partition wall, a second water inlet, a submersible mixer, a first transverse partition wall, a second transverse partition wall, a third transverse partition wall, a mixed liquid backflow well, a wall-penetrating pump, an inner backflow pipeline, a plurality of vertical mixers, a plurality of aerators, a sludge backflow channel, an adjustable aeration device, a mixer and a sludge suction machine; wherein,
the concrete inner shell is fixedly paved on the side slopes at the bottom and around the bottom in the biological pond of the Baileke pond body;
the longitudinal partition wall is longitudinally arranged in an anaerobic tank of the Plecke tank body and longitudinally divides the anaerobic tank into an anaerobic zone and a first anoxic zone, and the anaerobic zone is communicated with the first anoxic zone through a first water through hole arranged on the longitudinal partition wall;
the tank body at the front end of the first anoxic zone is provided with the second water inlet;
the submersible stirrer is arranged in the first anoxic zone;
the first transverse partition wall, the second transverse partition wall and the third transverse partition wall are sequentially arranged in an aerobic tank of the Baileke tank body at intervals from front to back, and the aerobic tank is divided into a second anoxic zone, a first aeration zone, a second aeration zone and a degassing zone which are sequentially communicated from front to back;
the mixed liquid return well is arranged at the tail end of the degassing zone and is connected to the first anoxic zone through the wall-penetrating pump and the internal return pipeline, and the internal return pipeline is arranged on the inner side of the peripheral slope at the bottom of the Baileke tank body;
the plurality of vertical stirrers are distributed and arranged in the second anoxic zone according to the flow direction of water flow;
the plurality of aerators are distributed at the bottom in the first aeration zone and the second aeration zone;
the adjustable aeration device is arranged at the front end of the degassing area;
the stirrer is arranged in the middle part in the degassing area;
the sludge suction machine is arranged in the sedimentation tank;
the sludge return channel is an open channel arranged on the side wall of the Plek tank body, one end of the sludge return channel is connected with the sludge suction machine arranged in the sedimentation tank, the other end of the sludge return channel is provided with a first sludge return port and a second sludge return port respectively, the second sludge return port is connected with the anaerobic zone, and the first sludge return port is connected with the second anoxic zone.
2. The improved biochemical pond based on the Baileke pond body according to claim 1, wherein the inner concrete shell is composed of a reinforced concrete bottom plate and a side slope protection shell;
the reinforced concrete bottom plate is fixedly paved at the bottom of the biological pond of the Pleke pond body;
the side slope protective shell is fixedly paved on a side slope around the bottom in the biological pond of the Baileke pond body.
3. The improved biochemical pool based on the Baileke pool body as claimed in claim 2, wherein the reinforced concrete bottom plate is composed of a 100mm thick C15 cushion layer and a 250mm thick C30 reinforced concrete bottom plate which are arranged from bottom to top, wherein the C30 reinforced concrete bottom plate is provided with 14@200 double-layer bidirectional reinforcing bars;
the slope protection shell is composed of a geomembrane fixedly laid on a slope, a steel wire mesh laid on the upper layer of the geomembrane and a C20 plain concrete protection layer formed by spraying on the steel wire mesh.
4. An improved biochemical pond based on a Baileke pond body according to any one of the claims 1 to 3, wherein the first transverse partition wall, the second transverse partition wall and the third transverse partition wall are arranged in the aerobic pond of the Baileke pond body at intervals from front to back, and the second anoxic zone, the first aeration zone, the second aeration zone and the degassing zone which are communicated in sequence are divided in the aerobic pond from front to back:
the first transverse partition wall is transversely arranged in an aerobic tank of the Pleke tank body, and the two transverse ends of the first transverse partition wall are fixedly connected with tank walls on two sides of the aerobic tank;
the second transverse partition wall is transversely arranged in an aerobic pool of the Baileke pool body, one end of the second transverse partition wall is fixedly connected with one side pool wall of the aerobic pool, and the other end of the second transverse partition wall and the other side pool wall of the aerobic pool form a first water flow channel at intervals;
the third transverse partition wall is transversely arranged in an aerobic tank of the Baileke tank body, one end of the third transverse partition wall is fixedly connected with the other side wall of the aerobic tank, and the other end of the third transverse partition wall and one side wall of the aerobic tank form a second water flow channel at intervals;
the second water passing holes, the first water flow channels and the second water flow channels of the first transverse partition wall are arranged in a staggered mode, and folded water flow channels are formed among the second anoxic zone, the first aeration zone, the second aeration zone and the degassing zone.
5. An improved biochemical pond based on a Pleke pond according to any of claims 1 to 3, further comprising: the total water inlet channel is provided with a total water inlet and is arranged at the front end of the Baileke tank body and is respectively connected with the water inlet of the anaerobic zone and the second water inlet of the first anoxic zone through a water distribution valve.
6. The improved biochemical pond based on the Baileke pond body as claimed in claim 1 or 2, wherein the distribution of the plurality of vertical stirrers in the flow direction of the water flow in the second anoxic zone is as follows:
the two vertical mixers are arranged at the water inlet of the second anoxic zone, and the stirring paddles of the two vertical mixers rotate anticlockwise;
the other two vertical mixers are arranged at the water outlet of the second anoxic zone, and the stirring paddles of the other two vertical mixers rotate clockwise.
7. An improved biochemical pool based on a Pleke pool body according to any one of claims 1 to 3, characterized in that,
the internal reflux pipeline is embedded in the side wall of the Pleke tank body;
the mixed liquid discharge port of the inner reflux pipeline is arranged in the middle of the side slope and is arranged at the opposite angle of the submersible mixer arranged in the first anoxic zone.
8. An improved biochemical pond based on a Baileke pond body according to any one of the claims 1 to 3, characterized in that the suction dredge is a truss-car suction dredge;
the suction dredge is provided with three axial-flow pumps with the power of 5.5 kilowatts as external reflux pumps.
9. An improved biochemical pond based on a Pleke pond according to any of claims 1 to 3, further comprising:
the light steel structure blower room is arranged at the position of an aerobic pool corridor of the Baileke pool body, a window of the light steel structure blower room is provided with a dust screen, and a sun-shading curtain and a water cooling fan are arranged inside the light steel structure blower room.
10. The improved biochemical pond based on the Pleke pond body according to any one of claims 1 to 3, wherein the aerator is a plate aerator or a tube aerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010648629.2A CN111635009A (en) | 2020-07-07 | 2020-07-07 | Improved biochemical pool based on Baileke pool body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010648629.2A CN111635009A (en) | 2020-07-07 | 2020-07-07 | Improved biochemical pool based on Baileke pool body |
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| CN111635009A true CN111635009A (en) | 2020-09-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114644400A (en) * | 2022-04-25 | 2022-06-21 | 北控水务(中国)投资有限公司 | Integrated sewage treatment device |
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| CN208577507U (en) * | 2018-05-23 | 2019-03-05 | 中持水务股份有限公司 | A kind of Biolak comprehensive pool |
| CN209583899U (en) * | 2018-12-21 | 2019-11-05 | 中原环保股份有限公司 | It is a kind of to be thoroughly mixed formula sewage biological treatment system with degassing function |
| CN212640075U (en) * | 2020-07-07 | 2021-03-02 | 北控水务(中国)投资有限公司 | Improved biochemical pool based on Baileke pool body |
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2020
- 2020-07-07 CN CN202010648629.2A patent/CN111635009A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208577507U (en) * | 2018-05-23 | 2019-03-05 | 中持水务股份有限公司 | A kind of Biolak comprehensive pool |
| CN209583899U (en) * | 2018-12-21 | 2019-11-05 | 中原环保股份有限公司 | It is a kind of to be thoroughly mixed formula sewage biological treatment system with degassing function |
| CN212640075U (en) * | 2020-07-07 | 2021-03-02 | 北控水务(中国)投资有限公司 | Improved biochemical pool based on Baileke pool body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114644400A (en) * | 2022-04-25 | 2022-06-21 | 北控水务(中国)投资有限公司 | Integrated sewage treatment device |
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